Six states and three territories make up the Pacific-West Region of the National Park Service. This region is responsible for managing 63 park service sites and 10 associated sites ranging in size from less than an acre to over a hundred thousand acres. This region was created in 1995 by combining parts of the Western and Pacific Northwest Regions.
States of the Pacific-West Region
Pacific-West
| Type | NPS Units |
| National Parks | 18 |
| National Monument | 12 |
| National Preserve | 2 |
| National Historical Park | 11 |
| National Historic Site | 9 |
| International Historic Site | — |
| National Battlefield Park | — |
| National Military Park | — |
| National Battlefield | — |
| National Battlefield Site | — |
| National Memorial | 2 |
| National Recreation Area | 7 |
| National Seashore | 1 |
| National Lakeshore | — |
| National River | — |
| National Reserve | 2 |
| National Parkway | — |
| National Trail | — |
| Other | — |
National Park Service Units of the Pacific-West
National Parks of the Pacific-West
- Channel Islands National Park (CA)
- Crater Lake National Park (OR)
- Death Valley National Park (CA, NV)
- Great Basin National Park (NV)
- Haleakala National Park (HI)
- Hawaii Volcanoes National Park (HI)
- Joshua Tree National Park (CA)
- Kings Canyon National Park (CA)
- Lassen Volcanic National Park (CA)
- Mount Rainier National Park (WA)
- National Park of American Samoa (AS)
- North Cascades National Park (WA)
- Olympic National Park (WA)
- Pinnacles National Park (CA)
- Redwood National Park and State Parks (CA)
- Sequoia National Park (CA)
- Yellowstone National Park (ID, MT, WY)
- Yosemite National Park (CA)
National Monuments of the Pacific-West
- Cabrillo National Monument (CA)
- Castle Mountains National Monument (CA)
- César E. Chávez National Monument (CA)
- Craters of the Moon National Monument (ID)
- Devils Postpile National Monument (CA)
- Hagerman Fossil Beds National Monument (ID)
- John Day Fossil Beds National Monument (OR)
- Lava Beds National Monument (CA)
- Muir Woods National Monument (CA)
- Oregon Caves National Monument and Preserve (OR)
- Tule Lake National Monument
- Tule Springs Fossil Beds National Monument (NV)
National Preserve of the Pacific-West
- Craters of the Moon National Preserve (ID)
- Mojave National Preserve (CA)
National Historical Parks of the Pacific-West
- Honouliuli National Historic Site (HI)
- Kalaupapa National Historical Park (HI)
- Kaloko-Honokohau National Historical Park (HI)
- Klondike Gold Rush National Historical Park (WA)
- Lewis and Clark National Historical Park (OR, WA)
- Manhattan Project National Historical Park (WA)
- Nez Perce National Historical Park (ID, MT, OR, WA)
- Pu’uhonua O Honaunau National Historical Park (HI)
- Rosie the Riveter/World War II Home Front National Historical Park (CA)
- San Francisco Maritime National Historical Park (CA)
- San Juan Island National Historical Park (WA)
- War in the Pacific National Historical Park (GU)
National Historic Sites of the Pacific-West
- Eugene O’Neill National Historic Site (CA)
- Fort Point National Historic Site (CA)
- Fort Vancouver National Historic Site (OR, WA)
- John Muir National Historic Site (CA)
- Manzanar National Historic Site (CA)
- Minidoka National Historic Site (ID)
- Pu’ukohola Heiau National Historic Site (HI)
- Whitman Mission National Historic Site (WA)
National Memorials of the Pacific-West
- Pearl Harbor National Memorial (HI)
- Port Chicago Naval Magazine National Memorial (CA)
National Recreation Areas of the Pacific-West
- Golden Gate National Recreation Area (CA)
- Lake Chelan National Recreation Area (WA)
- Lake Mead National Recreation Area (NV)
- Lake Roosevelt National Recreation Area (WA)
- Ross Lake National Recreation Area (WA)
- Santa Monica Mountains National Recreation Area (CA)
- Whiskeytown-Shasta-Trinity National Recreation Area (CA)
National Seashore of the Pacific-West
- Point Reyes National Seashore (CA)
National Reserves of the Pacific-West
- City of Rocks National Reserve (ID)
- Ebey’s Landing National Historical Reserve (WA)
Associated Units of the Pacific-West
Associated National Trails of the Pacific-West
- Ala Kahakai National Historic Trail (HI)
- California National Historic Trail (CA, CO, ID, KS, MO, NE, NV, OR, UT, WY)
- Juan Bautista de Anza National Historic Trail (CA)
- Lewis and Clark National Historic Trail (ID, IL, IA, KS, MO, MT, NE, ND, OR, SD, WA)
- Old Spanish National Historic Trail (AZ, CA, CO, NV, NM, UT)
- Oregon National Historic Trail (ID, KS, MO, NE, OR, WA, WY)
- Pony Express National Historic Trail (CA, CO, KS, MO, NE, NV, UT, WY)
Associated National Historic Sites of the Pacific-West
- Minidoka National Historic Site (WA)
Other Associated Site of the Pacific-West
- American Memorial Park (MP)
- Wing Luke Museum Affiliated Area (WA)
