Data Zone
| Country/Territory | Site name | IBA Criteria | Final Code |
|---|---|---|---|
| USA | Accabonac Harbor | A4i | |
| USA | ACE Basin National Wildlife Refuge--Edisto Unit | A1 | |
| USA | Active Delta (Mississippi River Birdsfoot Delta) | A4i | |
| USA | Adirondack High Peaks Forest Tract | A1 | |
| USA | Agattu Island Colonies | A4i, A4ii | |
| USA | Akun Strait Colonies | A4i, A4ii | |
| USA | Allegan State Game Area & Kalamazoo River (Galesburg to Saugatuck) | A1 | |
| USA | Allegany Forest Tract | A1 | |
| USA | Allegheny Highlands | A1 | |
| USA | Alligator River Lowlands | A1, A4i | |
| USA | Altamaha River Delta | A1, A4i | |
| USA | Altamaha Waterfowl Management Area | A1 | |
| USA | Amagat & Umga Island Colonies | A4i, A4ii | |
| USA | Amak Island Colony | A4i | |
| USA | Amalik Bay Colonies | A4i | |
| USA | Amchitka Island Colony | A4i | |
| USA | Amchitka Pass 180W51N | A4ii | |
| USA | American Falls Reservoir | A4i | |
| USA | Amphibolites | A1 | |
| USA | Anderson Mesa, Coconino National Forest | A1 | |
| USA | Andreafsky Wilderness | A1, A2, A4i | |
| USA | Ano Nuevo Area | A1 | |
| USA | Antelope Valley (Lancaster) | A1 | |
| USA | Anza-Borrego Riparian | A1 | |
| USA | Apalachicola River and Forests | A1 | |
| USA | Assateague Island | A1, A4i | |
| USA | Atchafalaya Delta | A4i | |
| USA | Attu Island Colony | A4i | |
| USA | Avon Park Air Force Range-Bombing Range Ridge | A1 | |
| USA | Babcock-Webb Ecosystem | A1 | |
| USA | Baby Islands & Akutan Pass Colonies | A4i, A4ii | |
| USA | Balcones Canyonlands National Wildlife Refuge | A1, A2 | |
| USA | Balcones Canyonlands Preserve | A1, A2 | |
| USA | Bald Head - Smith Island | A1, A4i | |
| USA | Baldwin Lake | A1 | |
| USA | Barataria Terrebonne | A1, A4i | |
| USA | Bark Camp Barrens Wildlife Management Area | A1 | |
| USA | Barn Island Wildlife Management Area | A1 | |
| USA | Barren Islands Colonies | A4i, A4ii | |
| USA | Barren Islands Marine | A4ii | |
| USA | Barrier Island/Lagoon System | A1, A4i, A4ii | |
| USA | Barrow Canyon & Smith Bay | A4i, A4ii | |
| USA | Barry State Game Area, Yankee Springs Recreation Area & Perry Trust | A1 | |
| USA | Bass River Marsh | A1 | |
| USA | Battery Island | A4i | |
| USA | Bear Island Wildlife Management Area | A1, A4i | |
| USA | Bear Lake National Wildlife Refuge | A4i | |
| USA | Bear River Bay UT02 | A4i, A4iii | |
| USA | Beaufort Sea Nearshore | A4i | |
| USA | Beaufort Sea Shelf Edge 152W71N | A4i | |
| USA | Beaverhead Sage-steppe | A1 | |
| USA | Bechevin Bay | A1, A4i | |
| USA | Bering Sea Shelf 163W56N | A4i | |
| USA | Bering Sea Shelf 165W56N | A4i | |
| USA | Bering Sea Shelf 166W56N | A4i | |
| USA | Bering Sea Shelf 166W57N | A4i | |
| USA | Bering Sea Shelf 168W62N | A4ii | |
| USA | Bering Sea Shelf 169W60N | A4ii | |
| USA | Bering Sea Shelf 170W58N | A4i | |
| USA | Bering Sea Shelf Edge 166W55N | A4i, A4ii | |
| USA | Bering Sea Shelf Edge 168W56N | A4i | |
| USA | Bering Sea Shelf Edge 169W55N | A4i | |
| USA | Bering Sea Shelf Edge 173W58N | A4ii | |
| USA | Bering Sea Shelf Edge 174W59N | A4i, A4ii | |
| USA | Bering Sea Shelf Edge 178W61N | A4i, A4ii | |
| USA | Bering Strait | A4ii | |
| USA | Bienville National Forest | A1 | |
| USA | Big Cypress Swamp Watershed | A1 | |
| USA | Big Foot Island | A4i | |
| USA | Big Marco Pass Shoal | A1, A4i | |
| USA | Big Oaks National Wildlife Refuge | A1 | |
| USA | Big Sur | A1 | |
| USA | Bilk Creek - Montana Mountains | A1 | |
| USA | Bill Williams River National Wildlife Refuge | A1, A4i | |
| USA | Bird Island Colony | A4i | |
| USA | Bird Key Stono | A4i | |
| USA | Bird Rocks NWR | A4i | |
| USA | Bitter Lake National Wildlife Refuge | A4i | |
| USA | Blackfoot Reservoir | A4i | |
| USA | Blackjack Peninsula of Aransas National Wildlife Refuge | A1, A4i | |
| USA | Blacksand Spit Colony | A4i | |
| USA | Blackwater River State Forest | A1 | |
| USA | Blanco Reef | A4i | |
| USA | Bluestem Prairie-Buffalo River State Park IBA | A1 | |
| USA | Bolsa Chica | A4i | |
| USA | Bosque del Apache National Wildlife Refuge | A4i | |
| USA | Braddock Bay | A4iv | |
| USA | Brevard Scrub Ecosystem | A1 | |
| USA | Bridger Sage-steppe | A1 | |
| USA | Brosnan Forest | A1 | |
| USA | Brown Property | A1, A2 | |
| USA | Buldir & Near Islands Marine | A4i, A4ii | |
| USA | Buldir Island Colony | A4i, A4ii | |
| USA | Bull Creek | A1 | |
| USA | Byron Area | A1 | |
| USA | Cache River SNA | A1 | |
| USA | Cache-Lower White Rivers | A4i | |
| USA | Camp Blanding-Jennings | A1 | |
| USA | Camp Pendleton | A1, A4i | |
| USA | Canyonlands Area | A1 | |
| USA | Cape Blanco Nearshore Ocean | A1 | |
| USA | Cape Canaveral-Merritt Island | A1, A4i | |
| USA | Cape Hatteras National Seashore | A4i | |
| USA | Cape Island and Higbee Beach Wildlife Management Area | A1, A4i | |
| USA | Cape Lookout National Seashore | A1, A4i | |
| USA | Cape Meares Marbled Murrelet | A1 | |
| USA | Cape Peirce & Cape Newenham Colonies | A4i, A4ii | |
| USA | Cape Romain National Wildlife Refuge | A4i | |
| USA | Cape Senyavin | A4i | |
| USA | Cape Tanak Marine | A4i | |
| USA | Captree Island Vicinity | A1 | |
| USA | Carolina Sandhills National Wildlife Refuge | A1 | |
| USA | Carrizo Plain | A1 | |
| USA | Carrot Island - Bird Shoal | A4i | |
| USA | Carson Range | A1 | |
| USA | Carter Bay | A1, A4i | |
| USA | Castle Rock | A4i | |
| USA | Castle Rock Colonies | A4i, A4ii | |
| USA | Castle Rock State Park and Lowden-Miller SF | A1 | |
| USA | Catahoula-Dewey Wills-Three Rivers | A4i | |
| USA | Catskills Peaks Area | A1 | |
| USA | Center Islands | A4i | |
| USA | Central CA MAMU | A1 | |
| USA | Central Pasco | A1 | |
| USA | Central Seward Peninsula | A1, A2, A4i | |
| USA | Central Yukon - Kuskokwim | A1, A4i, A4iii | |
| USA | Chagulak Island Colony | A4ii | |
| USA | Chagulak Island Marine | A4ii | |
| USA | Chagvan Bay | A1, A4i | |
| USA | Chamisso Island Colonies | A4ii | |
| USA | Chandeleur Islands (Breton National Wildlife Refuge) | A4i | |
| USA | Channel Islands - Northern | A1, A4i, A4ii | |
| USA | Charles M. Russell National Wildlife Refuge | A1 | |
| USA | Chenier Plain | A1, A4i | |
| USA | Cherni Island Complex Colonies | A4i, A4ii | |
| USA | Cheyenne Bottoms Preserve and Wildlife Area | A1 | |
| USA | Chignik Bay | A1, A4i | |
| USA | Chiniak Bay | A1, A4i | |
| USA | Chino Farms | A1 | |
| USA | Chinook Fish and Wildlife Area and Chinook Mine | A1 | |
| USA | Chiricahua Mountains, Coronado National Forest | A1 | |
| USA | Chirikof Island Marine | A4ii | |
| USA | Chowan River Bottomlands | A4i | |
| USA | Chukchi Sea Nearshore | A4i | |
| USA | Cimarron National Grassland | A1 | |
| USA | Cinder River Marine | A4i | |
| USA | Cinder River-Hook Lagoon | A1, A4i | |
| USA | Clam Gulch | A4i | |
| USA | Coastal Prairie | A1, A4i | |
| USA | Colville River Delta Marine | A4i | |
| USA | Comanche National Grassland | A1 | |
| USA | Conecuh National Forest | A1 | |
| USA | Copper River Delta | A4i | |
| USA | Corkscrew Swamp Watershed | A4i | |
| USA | Cowles Bog - Indiana Dunes National Lakeshore | A1 | |
| USA | Crab Bank | A4i | |
| USA | Craters of the Moon National Monument and Preserve | A1 | |
| USA | Crex Meadows State Wildlife Area | A4i | |
| USA | Croatan Forest | A1 | |
| USA | Crooked Island Colony | A4i | |
| USA | Crowley Lake Area | A1 | |
| USA | Cumberland Island National Seashore | A1, A4i | |
| USA | Cumberland Mountains | A1 | |
| USA | Current / Jack's Fork Watershed-45 | A1 | |
| USA | Currituck Marshes - Pine Island | A4i | |
| USA | Cutler Reservoir and Marsh UT08 | A4i | |
| USA | Cypress Creek National Wildlife Refuge | A1 | |
| USA | Deception Pass | A4i | |
| USA | Del Norte Coast | A1 | |
| USA | Delaware Bayshore Region | A4i | |
| USA | Delaware Coastal Zone | A4i | |
| USA | Delmarva Bayside Marshes | A1 | |
| USA | Deseret Land and Livestock Ranch UT10 | A1, A4ii | |
| USA | Detroit River | A4i | |
| USA | Deveaux Bank | A1, A4i | |
| USA | Diomede Islands Colonies | A4i, A4ii | |
| USA | Dixon Entrance 132W54N | A4ii | |
| USA | Donnelly Wildlife Management Area | A1 | |
| USA | Dressing Point | A4i | |
| USA | Dry Tortugas National Park | A1 | |
| USA | East Copper River Delta Colonies | A4i | |
| USA | East Kisatchie | A1 | |
| USA | East Mojave Peaks | A1 | |
| USA | East Norton Sound | A4i | |
| USA | East Sand Island | A4i, A4ii | |
| USA | Eastern Kodiak Island Marine | A4i, A4ii | |
| USA | Eastern Neck National Wildlife Refuge | A4i | |
| USA | Edwards Air Force Base | A1 | |
| USA | Edwin B. Forsythe National Wildlife Refuge - Holgate Unit | A1 | |
| USA | Egegik Bay | A1, A4i | |
| USA | Egg Island Colonies | A4i | |
| USA | Eglin Air Force Base | A1 | |
| USA | Eleven Point Watershed-43 | A1 | |
| USA | Entrance Point Colony | A4i | |
| USA | False Klamath | A4iii | |
| USA | Farallon Islands | A1, A4i, A4ii | |
| USA | Farallon Islands Pelagic | A4i | |
| USA | Farmington Bay UT04 | A4i | |
| USA | Felton Prairie IBA | A1 | |
| USA | Fenimore Pass & Atka Island Marine | A4i, A4ii | |
| USA | Ferry Slip Island | A4i | |
| USA | Fire Island (East of Lighthouse) | A1 | |
| USA | Fisheating Creek Watershed | A1 | |
| USA | Flat Island Colony | A4ii | |
| USA | Flint Hills Region | A1, A4i | |
| USA | Forrester Island Colonies | A4i, A4ii | |
| USA | Fort Benning Military Installation | A1 | |
| USA | Fort Chaffee | A1 | |
| USA | Fort Custer Training Center and Recreation Area | A1 | |
| USA | Fort Hood | A1, A2 | |
| USA | Fort Jackson Military Reservation | A1 | |
| USA | Fort Stewart Military Installation | A1 | |
| USA | Fox River Flats | A4i | |
| USA | Francis Marion National Forest | A1 | |
| USA | Gallilee Marshes | A1 | |
| USA | Gareloi Island Colony | A4ii | |
| USA | Gareloi Island Marine | A4ii | |
| USA | Gilbert Bay/South Arm UT05 | A4i | |
| USA | Glaciated Prairie Sage-steppe | A1 | |
| USA | Glacier Bay & Icy Strait | A4i, A4ii | |
| USA | Glacier Bay Outer Coast Marine | A4ii | |
| USA | Glacier National Park | A1 | |
| USA | Goat Island NWR | A4ii | |
| USA | Goethe State Forest | A1 | |
| USA | Goodnews Bay | A1, A4i | |
| USA | Goodnews Bay Colony | A4i | |
| USA | Goose Lake Prairie State Park | A1 | |
| USA | Goose Pond/Beehunter Marsh Fish and Wildlife Area | A1 | |
| USA | Grand Canyon National Park- Raptor Migration Points | A1 | |
| USA | Grand River Grasslands-05 | A1 | |
| USA | Grasslands Ecological Area | A1 | |
| USA | Grays Lake National Wildlife Refuge | A4i | |
| USA | Great Bay | A1 | |
| USA | Great Dismal Swamp (VA) | A1 | |
| USA | Great Gull Island | A4i, A4iii | |
| USA | Great Rivers Confluence-35 | A4i | |
| USA | Great Salt Marsh | A1 | |
| USA | Great White Heron National Wildlife Refuge | A1 | |
| USA | Green Island | A4i | |
| USA | Gulf Islands GEOPark | A1, A4i | |
| USA | Gulf of Alaska Shelf 151W58N | A4i | |
| USA | Gulf of Alaska Shelf 155W57N | A4ii | |
| USA | Gulf of Alaska Shelf Edge 143W60N | A4i | |
| USA | Gulf of Alaska Shelf Edge 148W59N | A4ii | |
| USA | Gulf of Alaska Shelf Edge 163W54N | A4i | |
| USA | Gull Island | A4i | |
| USA | Gunnison Basin | A1 | |
| USA | Gunnison Bay/North Arm UT01 | A4i, A4iii | |
| USA | Guyandotte Mountain Vicinity | A1 | |
| USA | Haleakala | A1, A2, A4i, A4ii | HI12 |
| USA | Half Moon Bay, CA MAMU | A1 | |
| USA | Hamakua Forests | A1, A2, A4i | HI16 |
| USA | Hammonasset Beach State Park | A1 | |
| USA | Hampton/Seabrook Estuary | A1 | |
| USA | Hanalei National Wildlife Refuge | A1, A2, A4i | HI04 |
| USA | Hart Mountain National Antelope Refuge | A1 | |
| USA | Hebgen Lake | A4i | |
| USA | Heceta Bank | A4i | |
| USA | Heceta Valley, Cape Blanco | A4ii | |
| USA | Hegemeister Island Colonies | A4i | |
| USA | High Elevation Spruce-Fir | A1 | |
| USA | High Rock Resource Area | A1, A4ii | |
| USA | Hillenbrand Fish and Wildlife Area | A1 | |
| USA | Hillsborough Bay | A4i | |
| USA | Hiwassee Wildlife Refuge | A1, A4i | |
| USA | Hobcaw Barony | A1 | |
| USA | Holla Bend National Wildlife Refuge | A1 | |
| USA | Holly Shelter-Angola Bay | A1 | |
| USA | Homer Spit | A4i | |
| USA | Homochitto National Forest | A1 | |
| USA | Hoosier National Forest - Pleasant Run Unit | A1 | |
| USA | Huguenot Park-Nassau Sound | A1, A4i | |
| USA | Humboldt Bay | A1, A4i | |
| USA | Humboldt Lagoons | A1 | |
| USA | Hundred Acre Cove | A1 | |
| USA | Huntington and Northport Bays | A1 | |
| USA | Ichetucknee Springs State Park | A1 | |
| USA | Icy Bay | A1 | |
| USA | Icy Cape Marine | A4i, A4ii | |
| USA | Idaho National Laboratory (INL) | A1 | |
| USA | Iditarod River Lowlands | A4i | |
| USA | Ilnik Marine | A4i | |
| USA | Imperial National Wildlife Refuge | A1 | |
| USA | Imperial Reservoir | A1 | |
| USA | Imperial Valley | A1, A4i | |
| USA | Iroquois County State Conservation Area | A1 | |
| USA | Isles Dernieres - Timbalier Islands | A1, A4i | |
| USA | Isles of Shoals | A4i | |
| USA | Ivanof Bay | A1, A4i | |
| USA | Izembek Refuge Marine | A4i | |
| USA | Izembek-Moffet-Kinzarof Lagoons | A1, A4i | |
| USA | Jamaica Bay | A1 | |
| USA | James Campbell National Wildlife Refuge | A1, A2, A4i | HI06 |
| USA | Jasper-Pulaski Fish and Wildlife Area and surrounding areas | A1, A4i | |
| USA | Jepson Grasslands | A1 | |
| USA | Jigsaw Islands | A4i | |
| USA | Kachemak Bay | A4i, A4ii | |
| USA | Kagamil Island Marine | A4i, A4ii | |
| USA | Kahiltna Flats-Petersville Road | A4i | |
| USA | Kamishak Bay | A4i | |
| USA | Kankakee River Fish and Wildlife Area | A1 | |
| USA | Kankakee Sands Project and surrounding natural areas | A1 | |
| USA | Kasegaluk Lagoon | A4i | |
| USA | Kasilof River Flats | A4i | |
| USA | Katy Prairie Conservancy | A1 | |
| USA | Kau Forest | A1, A2 | HI15 |
| USA | Kauai Forests and Uplands | A1, A2, A4i, A4ii | HI03 |
| USA | Kealia Pond National Wildlife Refuge | A1, A2, A4i | HI11 |
| USA | Kenai Fjords | A4i | |
| USA | Key West National Wildlife Refuge | A1 | |
| USA | Kigul Islets Colonies | A4i, A4ii | |
| USA | Kilauea Point National Wildlife Refuge | A1, A2, A4i, A4ii, A4iii | HI05 |
| USA | King City Grasslands (formerly Salinas River - Middle) | A1 | |
| USA | King Island Colony | A4ii | |
| USA | Kirtland's Warbler Management Units & Guide's Rest | A1, A2 | |
| USA | Kiska Island Colonies | A4i, A4ii | |
| USA | Kiska Island Marine | A4i, A4ii | |
| USA | Kissimmee Prairie Preserve and State Park | A1 | |
| USA | Klamath, CA MAMU | A1 | |
| USA | Kona Forests | A1, A2, A4i | HI13 |
| USA | Koniuji-Atka Island Colony | A4ii | |
| USA | Koniuji-Shumagin Islands Colonies | A4ii | |
| USA | Kotzebue Sound 163W66N | A4i | |
| USA | Kuluk Bay | A1, A4i | |
| USA | Kuskokwim Bay, marine | A4i | |
| USA | Kuskokwim River Delta | A1, A4i | |
| USA | Kvichak Bay | A1, A4i | |
| USA | La Grange - Waterford Grasslands | A1 | |
| USA | La Perouse Bank | A1 | |
| USA | Lac Qui Parle - Big Stone IBA | A4i | |
| USA | Ladd S. Gordon Waterfowl Complex | A4i | |
| USA | Laguna Vista Spoils | A4i | |
| USA | Lake Conestee Nature Park | A1 | |
| USA | Lake Martin | A4i | |
| USA | Lake Mattamuskeet - Swan Quarter | A4i | |
| USA | Lake Pontchartrain | A4i | |
| USA | Lake Wales Ridge | A1 | |
| USA | Lana`ihale | A1, A4ii | HI10 |
| USA | Lavaca Bay Spoils | A4i | |
| USA | Lea-Hutaff Island | A1, A4i | |
| USA | Leahy Junction - Moses Coulee | A1 | |
| USA | Ledyard Bay | A4i | |
| USA | Lehua Islet | A1, A4ii, A4iii | HI02 |
| USA | Lewis Ocean Bay Heritage Preserve | A1 | |
| USA | Lewis Wetzel WMA | A1 | |
| USA | Lisburne Peninsula Marine | A4i | |
| USA | Little Beaver Creek | A1 | |
| USA | Little Sandy Landscape | A1 | |
| USA | Lone Willow Slough | A1 | |
| USA | Lower C & O Canal | A1 | |
| USA | Lower Colorado River Valley | A1 | |
| USA | Lower Cook Inlet 153W59N | A4i | |
| USA | Lower Rappahannock River | A1 | |
| USA | Lower Salt and Gila Riparian Ecosystem | A4i | |
| USA | Lower San Pedro River | A1 | |
| USA | Lower Tampa Bay | A4i | |
| USA | Loxahatchee River and Slough | A1 | |
| USA | Lynnville-Squaw Creek Mine Complex | A1 | |
| USA | Mack Reef | A4ii | |
| USA | Marais des Cygnes Wildlife Area & National Wildlife Refuge | A1 | |
| USA | Marble Canyon and Vermilion Cliffs | A1 | |
| USA | Marbled Murrelet IBA | A1, A4i | |
| USA | Market Lake Wildlife Management Area | A4i | |
| USA | Marmot Bay | A4i | |
| USA | Marmot Bay Colonies | A4ii | |
| USA | Marsh Meadows | A1 | |
| USA | Maschaug Pond and Beach | A1 | |
| USA | Mattaponi and Pamunkey Rivers | A1 | |
| USA | Mauna Kea Mamane - Naio Forest | A1, A2 | HI14 |
| USA | Mauna Loa-Kilauea Forests | A1, A2, A4i | HI17 |
| USA | Mecox Sagaponack Coastal Dunes | A1 | |
| USA | Medicine Lake National Wildlife Refuge | A1 | |
| USA | Medway Plantation | A1 | |
| USA | Mendenhall Wetlands | A4i | |
| USA | Mendocino Coast Pelagic, CA | A1 | |
| USA | Middle Creek Wildlife Management Area | A4i | |
| USA | Middleton Island Colony | A4i | |
| USA | Midewin National Tallgrass Prairie | A1 | |
| USA | Minidoka National Wildlife Refuge | A4i | |
| USA | Mission Bay - San Diego River Estuary | A4i | |
| USA | Mississippi Palisades State Park | A1 | |
| USA | Mississippi Sandhill Crane National Wildlife Refuge | A1 | |
| USA | Missouri National Recreational River | A1, A4i | |
| USA | Mittry Lake State Wildlife Area | A1 | |
| USA | Molokai Forests | A1, A2 | HI09 |
| USA | Mono Highlands | A1 | |
| USA | Monomoy and South Beach NWR | A1 | |
| USA | Monroe Lake | A1 | |
| USA | Montezuma Wetlands Complex | A1, A4i, A4iii | |
| USA | Moriches Bay | A1 | |
| USA | Morzhovoi Bay | A4i, A4ii | |
| USA | Mount Zion (Piney Tract) | A1 | |
| USA | Mud Lake Wildlife Management Area | A4i | |
| USA | Mussellshell Sage-steppe | A1 | |
| USA | Myakka River Watershed | A1 | |
| USA | Nanvak Bay | A1, A4i | |
| USA | Napeague Harbor and Beach | A1 | |
| USA | Nature Conservancy Dolan Falls Preserve | A1 | |
| USA | Nature Conservancy Independence Creek Preserve | A1 | |
| USA | Nature Conservancy Love Creek Preserve | A1, A2 | |
| USA | Near Island Colony | A4ii | |
| USA | Nelson Lagoon Colonies | A4i | |
| USA | Nelson Lagoon-Mud Bay | A1, A4i | |
| USA | New River Corridor | A1 | |
| USA | Niagara River Corridor | A4i | |
| USA | Ninemile Draw | A1 | |
| USA | Ninigret Pond and Conservation Areas | A1 | |
| USA | Nissequague River Watershed and Smithtown Bay | A1 | |
| USA | NM Lesser-Prairie Chicken Complex | A1 | |
| USA | Noatak River Delta Colony | A4i | |
| USA | North Deer Island | A4i | |
| USA | North Olympic Marbled Murrelet | A1 | |
| USA | North Platte River Valley | A1, A4i | |
| USA | North San Diego Lagoons | A1, A4i | |
| USA | North Valley Grasslands | A1 | |
| USA | Northern Adirondack Peaks | A1 | |
| USA | Northern Everglades | A4i | |
| USA | Northern Green Mountains IBA | A1 | |
| USA | Northern Montague Island | A4i | |
| USA | Northwest Cape Colony | A4ii | |
| USA | Northwestern Hawaiian Islands | A1, A2, A4i, A4ii, A4iii | HI01 |
| USA | Noxubee National Wildlife Refuge | A1 | |
| USA | Nushagak Bay | A1, A4i | |
| USA | Nushagak Bay, marine | A1, A4i | |
| USA | Oahu Uplands | A1, A2 | HI08 |
| USA | Ocala National Forest - Lake George | A1 | |
| USA | Off Jasper Seamount, CA | A1 | |
| USA | Ogangen Island Colonies | A4ii | |
| USA | Ogden Bay UT03 | A4i, A4iii | |
| USA | Okefenokee National Wildlife Refuge | A1 | |
| USA | Old House Channel - Island MN | A4i | |
| USA | Old Mine Road | A1 | |
| USA | Olympic Coast Marbled Murrelet | A1 | |
| USA | Olympic Continental Shelf | A1, A4ii | |
| USA | Orange Coast Wetlands | A4i | |
| USA | Oregon Canyon and Trout Creek Mountains | A1 | |
| USA | Orford Reef | A4iii | |
| USA | Oscar Scherer State Park | A1 | |
| USA | Osceola Flatwoods and Prairies | A1 | |
| USA | Osceola National Forest-Okefenokee Swamp | A1 | |
| USA | Outer Banks Inshore Ocean | A4i | |
| USA | Outer Cape Cod (Cape Cod National Seashore) | A1 | |
| USA | Outer Continental Shelf | A1 | |
| USA | Outer Islands Marine | A4ii | |
| USA | Owyhee Uplands | A1 | |
| USA | Oxford Slough | A4i | |
| USA | Ozark National Forest | A1 | |
| USA | Palmer River | A1 | |
| USA | Palmetto Peartree-Buckridge | A1 | |
| USA | Palos Verdes | A1 | |
| USA | Panoche Valley | A1 | |
| USA | Parker Mountain UT17 | A1 | |
| USA | Patoka River National Widlife Refuge | A1 | |
| USA | Pawnee National Grassland | A1 | |
| USA | Pea Island National Wildlife Refuge | A4i | |
| USA | Pearl Harbor National Wildlife Refuge | A1, A2, A4i | HI07 |
| USA | Pelican Bay, CA MAMU | A1 | |
| USA | Pequannock Watershed | A1 | |
| USA | Pettaquamscutt Cove | A1 | |
| USA | Phinizy Swamp | A1 | |
| USA | Piedmont National Wildlife Refuge | A1 | |
| USA | Piedras Blancas, CA | A1 | |
| USA | Pier 400 Tern Colony (formerly Terminal Island) | A1, A4i | |
| USA | Piney Grove | A1 | |
| USA | Pinnacle Island Colony | A4i | |
| USA | Plymouth and Duxbury Bays | A1 | |
| USA | Point Arena, CA | A1 | |
| USA | Point Conception 120W34N | A1, A4ii | |
| USA | Point Conception 121W34N | A1 | |
| USA | Point Lay Marine | A4i | |
| USA | Point Mugu | A1 | |
| USA | Point No Point | A1 | |
| USA | Point Reyes - Outer | A1 | |
| USA | Point Sal 121W35N | A1 | |
| USA | Pomona Nongame Bird Management Area | A1 | |
| USA | Port Angeles Harbor/Ediz Hook | A1 | |
| USA | Port Angeles Marbled Murrelet | A1 | |
| USA | Port Bolivar Bird Sanctuaries - Bolivar Flats | A1, A4i | |
| USA | Port Heiden | A1, A4i | |
| USA | Port Moller-Herendeen Bay | A1, A4i | |
| USA | Port Snettisham | A1 | |
| USA | Potomowut River | A1 | |
| USA | Powder/Carter Sage-steppe | A1 | |
| USA | Prairie Ridge State Natural Area - Jasper and Marion Units | A1 | |
| USA | Pratt's Wayne/Phillip State Park Grassland Complex | A1 | |
| USA | Prince William Sound | A4i, A4ii | |
| USA | Protection Island | A4i | |
| USA | Pungo - Pocosin Lakes | A4i | |
| USA | Pyramid State Park | A1 | |
| USA | Quivira National Wildlife Refuge | A1, A4i | |
| USA | Raccoon Island | A4i | |
| USA | Raft River/ Curlew Valley | A1 | |
| USA | Red Desert | A1 | |
| USA | Red Hills Ecosystem | A1 | |
| USA | Red Hills Region | A1 | |
| USA | Redfish Rocks | A4iii | |
| USA | Redoubt Bay | A4i | |
| USA | Riou Spit Colony | A4i | |
| USA | Roan Mountain | A1 | |
| USA | Roanoke River Bottomlands | A1, A4i | |
| USA | Rothsay Prairie | A1 | |
| USA | Round Island Colony | A4i | |
| USA | Rowe Sanctuary | A1, A4i | |
| USA | Rumstick/Jacobs Points | A1 | |
| USA | Sachuest Point & 3rd Beach | A1 | |
| USA | Safety Sound | A4i | |
| USA | Saginaw Bay | A4i | |
| USA | Salt Plains National Wildlife Refuge | A1 | |
| USA | Salton Sea | A4i, A4iii | |
| USA | Samish/Padilla Bays | A1 | |
| USA | San Antonio Valley | A1 | |
| USA | San Clemente Island | A1 | |
| USA | San Diego Bay - South | A1, A4i | |
| USA | San Diego NWR Otay-Sweetwater Unit | A1 | |
| USA | San Emigdio Mountains | A1 | |
| USA | San Jacinto Valley | A1 | |
| USA | San Joaquin Hills | A1 | |
| USA | San Juan County - Gunnison Sage-Grouse UT21 | A1 | |
| USA | San Luis Rey River | A1 | |
| USA | San Mateo Coast, CA | A1 | |
| USA | San Mateo, CA | A1 | |
| USA | San Mateo/Monterey, CA | A1 | |
| USA | San Miguel Island, CA | A4iii | |
| USA | San Pablo Bay Wetlands | A1 | |
| USA | San Pasqual Valley - Lake Hodges | A1 | |
| USA | San Pedro Riparian National Conservation Area | A1 | |
| USA | San Rafael Grasslands | A1 | |
| USA | Sand and Gunpowder Islands | A4i | |
| USA | Sand Bag Island | A4i | |
| USA | Sand Hills State Forest (South Carolina Forest Commission) | A1 | |
| USA | Sand Ridge - Tulare Lake Bed (incl. Pixley and Kern NWRs, Creighton Ranch) | A1 | |
| USA | Sandhills East | A1 | |
| USA | Sandhills West | A1 | |
| USA | Sandy Hook/ Gateway National Recreation Area | A1 | |
| USA | Sandy Island | A1 | |
| USA | Santa Ana River Valley | A1 | |
| USA | Santa Barbara Basin, CA | A4i | |
| USA | Santa Barbara Island, CA | A4i | |
| USA | Santa Clara River Valley | A1 | |
| USA | Santa Cruz Basin 120W33N | A4i | |
| USA | Santa Cruz Basin 120W34N | A1 | |
| USA | Santa Lucia Peaks | A1 | |
| USA | Santee National Wildlife Refuge | A1 | |
| USA | Sapowet Marsh Wildlife Management Area | A1 | |
| USA | Savoonga Colonies | A4ii | |
| USA | Seal Cape Marine | A4i, A4ii | |
| USA | Seal Islands | A1, A4i | |
| USA | Seguam Island Marine | A4ii | |
| USA | Segula & Davidof Islands Colonies | A4ii | |
| USA | Semichi Islands Colonies | A4i | |
| USA | Semidi Islands Colonies | A4i, A4ii | |
| USA | Semidi Islands Marine | A4ii | |
| USA | Semisopochnoi Island Colonies | A4i | |
| USA | Sheldon NWR | A1, A4ii | |
| USA | Shirely Basin | A1 | |
| USA | Shortleaf Pine-Bluestem Grass Ecosystem Management Area | A1 | |
| USA | Shugart/Felsenthal Red-cockaded Woodpecker | A1 | |
| USA | Shumagin Islands Marine | A4i, A4ii | |
| USA | Skagit Bay | A1, A4i | |
| USA | Sleeping Bear Dunes National Lakeshore mainland (including Donner Point to Dimmick's Point and Glen Arbor Twp beaches) | A1 | |
| USA | South Fork Kern River Valley | A1 | |
| USA | South Hills | A1 | |
| USA | Southern Blue Ridge | A1 | |
| USA | Southern Dorchester County | A1, A4i | |
| USA | Southernmost Edwards Plateau | A1, A2 | |
| USA | Southwest Cape Colonies | A4i, A4ii | |
| USA | Southwestern Kenai Peninsula Marine | A4ii | |
| USA | Spitz Island Colony | A4i | |
| USA | St George Island Colony | A4i, A4ii | |
| USA | St George Island Marine | A4i, A4ii | |
| USA | St Lawrence Island Polynya | A4i | |
| USA | St Lazaria Island Colony | A4i, A4ii | |
| USA | St Matthew & Hall Islands Colonies | A4i, A4ii | |
| USA | St Matthew and Hall Islands | A1, A2, A4i | |
| USA | St Matthew Island Marine | A4i | |
| USA | St Paul Island Colony | A4i, A4ii | |
| USA | St. Catherine Creek National Wildlife Refuge | A4i | |
| USA | St. Johns National Wildlife Refuge | A1 | |
| USA | St. Sebastian River State Buffer Preserve | A1 | |
| USA | Stephens Passage & Tracy-Endicott Arms | A4ii | |
| USA | Stikine River Delta | A4i | |
| USA | Sugar Creek Valley | A1 | |
| USA | Suisun Marsh | A1 | |
| USA | Sundown Island | A4i | |
| USA | Susitna Flats | A4i | |
| USA | Swanson Lakes | A4i | |
| USA | Talladega National Forest (Oakmulgee District) | A1 | |
| USA | Talladega NF (Shoal Creek/Talladega District) - Mt Longleaf NWR | A1 | |
| USA | Tallgrass Prairie Preserve | A1 | |
| USA | Tehachapi Mountains | A1 | |
| USA | Teshekpuk Lake-E. Dease Inlet | A4i | |
| USA | Three Arch Rocks National Wildlife Refuge | A4ii | |
| USA | Tiedeman Slough Colony | A4i | |
| USA | Tomkins Island | A4i | |
| USA | Trading Bay | A4i | |
| USA | Trinidad Complex | A4iii | |
| USA | Trustom Pond/Moonstone Beach | A1 | |
| USA | Turtle Island | A4i | |
| USA | Tuxedni Bay | A4i | |
| USA | Tuxedni Island Colony | A4i | |
| USA | Twin Valley - Neal Prairie | A1 | |
| USA | Two Arches Rock NWR | A4iii | |
| USA | Ugaiushak Island Colonies | A4i, A4ii | |
| USA | Ugamak Strait Colonies | A4ii | |
| USA | Uganik Bay & Viekoda Bay | A1 | |
| USA | Ugashik Bay | A1, A4i | |
| USA | Umnak Pass Colonies | A4ii | |
| USA | Unimak & Akutan Passes | A4i, A4ii | |
| USA | Universal Mine | A1 | |
| USA | Upper / Middle Meramec River Watershed-46 | A1 | |
| USA | Upper Blue Ridge Mountains | A1 | |
| USA | Upper Naknek River | A4i | |
| USA | Upper Strawberry Watershed UT12 | A1 | |
| USA | Upper Tanana River Valley | A4i | |
| USA | Vaux's Swift Chimney Corridor | A4i | |
| USA | Wapanocca National Wildlife Refuge | A1 | |
| USA | Warren Prairie Natural Area | A1 | |
| USA | Waterloo Recreation Area | A1 | |
| USA | Webb Wildlife Management Area | A1 | |
| USA | Weekapaug - Quonochontaug | A1 | |
| USA | Wekiwa Basin GEOPark | A1 | |
| USA | Wellington-Pine Grove Hills | A1 | |
| USA | West Hempstead Bay/Jones Beach West | A1 | |
| USA | West Kisatchie | A1 | |
| USA | Westby Prairie-Wetland Complex | A1 | |
| USA | Western St Lawrence Island Marine | A4i, A4ii | |
| USA | Whalehead Island NWR | A4ii | |
| USA | Wheeler National Wildlife Refuge | A1 | |
| USA | White River (Manistee National Forest) | A1 | |
| USA | Whitewater Draw State Wildlife Area | A4i | |
| USA | Wichita Mountains National Wildlife Refuge | A1 | |
| USA | Wide Bay | A1, A4i | |
| USA | Willcox Playa /Cochise Lakes | A4i | |
| USA | Willow Slough Fish and Wildlife Area | A1 | |
| USA | Withlacoochee State Forest (Citrus and Croom tracts) | A1 | |
| USA | Withlacoochee-Panasoffkee-Big Scrub | A1 | |
| USA | Yakima Training Center | A1 | |
| USA | Yakutat Bay | A4ii | |
| USA | Yaquina Head Outstanding Natural Area | A4i | |
| USA | Yellow River Forest/Effigy Mounds National Mounument | A1 | |
| USA | Yellowwood State Forest | A1 | |
| USA | Yoakum Dunes Preserve | A1 | |
| USA | Yolo Bypass Area | A1 | |
| USA | Yukon River Delta | A4iii | |
| USA | Zion National Park UT20 | A1 |