# List of islands of Washington

This is a list of selected islands that are part of Washington state.
| Island | County | Area | Population | Population | Population | Notes |
| Island | County | (miles²) | 2019 | 2010 | Change | Notes |
| Island | County | | (est) | | | Notes |
| Aleck Rocks | San Juan | | 0 | 0 | 0 | |
| Alegria / Little Double Island | San Juan | | 0 | 0 | 0 | |
| Allan Island | Skagit | | 0 | 0 | 0 | Previously owned by Microsoft billionaire Paul Allen. |
| Anderson Island | Pierce | 7.75 | 1,338 | 1,037 | 301 | |
| Armitage Island | San Juan | | 0 | 0 | 0 | |
| Bachelor Island | Clark | | 0 | 0 | 0 | |
| Bainbridge Island | Kitsap | 27.6 | 24,520 | 23,025 | 1,495 | |
| Bare Island | San Juan | | 0 | 0 | 0 | |
| Barnes Island | San Juan | 0.0529687 | 0 | 0 | 0 | |
| Barren Island | San Juan | | 0 | 0 | 0 | |
| Bateman Island | Benton | 0.25 | 33 | 31 | 2 | |
| Battleship Island | San Juan | 0.005 | 0 | 0 | 0 | |
| Bell Island | San Juan | | 2 | 2 | 0 | |
| Ben Ure Island | Island | | 6 | 6 | 0 | |
| Bird Rocks | San Juan | | 0 | 0 | 0 | |
| Black Rock | San Juan | | 0 | 0 | 0 | |
| Blake Island | Kitsap | 0.74 | 4 | 4 | 0 | Entire island preserved as Blake Island Marine State Park. |
| Blakely Island | San Juan | 6.5 | 44 | 33 | 11 | |
| Blind Island | San Juan | | 0 | 0 | 0 | Entire island preserved as Blind Island Marine State Park. |
| Boulder Island | San Juan | | 0 | 0 | 0 | |
| Brant Island | Whatcom | | 0 | 0 | 0 | |
| Brown Island | San Juan | 0.25 | 22 | 17 | 5 | |
| Buck Island | San Juan | | 0 | 0 | 0 | |
| Burrows Island | Skagit | | 0 | 0 | 0 | |
| Cactus Islands | San Juan | | 0 | 0 | 0 | |
| Camano Island | Island | 40.55 | 17,348 | 15,650 | 1,698 | Has two state parks, Cama Beach and Camano Island State Park. |
| Canoe Island | San Juan | 0.07 | 2 | 2 | 0 | |
| Castle Island | San Juan | | 0 | 0 | 0 | Originally named Old Hundred Island. |
| Cayou / Rum Island | San Juan | | 0 | 0 | 0 | |
| Cemetery Island | San Juan | | 0 | 0 | 0 | |
| Center Island | San Juan | 0.275 | 20 | 16 | 4 | |
| Charles Island | San Juan | | 0 | 0 | 0 | |
| Chuckanut Island | Whatcom | | 0 | 0 | 0 | |
| Chuckanut Rock | Whatcom | | 0 | 0 | 0 | Entire island preserved as part of San Juan Islands National Monument. |
| Clark Island | San Juan | 0.09 | 0 | 0 | 0 | Entire island preserved as Clark Island Marine State Park. |
| Cliff Island | San Juan | | 0 | 0 | 0 | |
| Clover Island | Benton | 0.25 | 0 | 0 | 0 | |
| Cluster Islands | San Juan | | 0 | 0 | 0 | |
| Colville Island | San Juan | | 0 | 0 | 0 | |
| Cone Islands | Skagit | | 0 | 0 | 0 | |
| Coon Island | San Juan | | 0 | 0 | 0 | |
| Cotton Point Island | San Juan | 0.0004 | 0 | 0 | 0 | Entire island preserved as part of San Juan Islands National Monument. |
| Cottonwood Island | Cowlitz | | 0 | 0 | 0 | |
| Crab Island | San Juan | | 0 | 0 | 0 | |
| Craft Island | Skagit | | 0 | 0 | 0 | |
| Crane Island | San Juan | 0.37 | 10 | 8 | 2 | |
| Cutts / Crow / Scotts Island | Pierce | 0.003 | 0 | 0 | 0 | Entire island preserved as Cutts Island State Park. |
| Cypress Island | Skagit | 6.23 | 10 | 7 | 3 | |
| Deadman Island | Skagit | | 0 | 0 | 0 | |
| Deadman Island / Shark Reef | San Juan | 0.005 | 0 | 0 | 0 | |
| Debays Island | Skagit | | 0 | 0 | 0 | |
| Decatur Island | San Juan | 3.52 | 96 | 78 | 18 | |
| Deception Island | Island | | 0 | 0 | 0 | |
| Destruction Island | Jefferson | 0.05 | 0 | 0 | 0 | |
| Dinner Island | San Juan | | 0 | 0 | 0 | |
| Doe Island | San Juan | 0.01 | 0 | 0 | 0 | Entire island preserved as Doe Island Marine State Park. |
| Dot Island | Skagit | | 0 | 0 | 0 | |
| Double Island | San Juan | | 0 | 0 | 0 | |
| Eagle Island | Pierce | 0.01 | 0 | 0 | 0 | Entire island preserved as Eagle Island State Park. |
| Ebey Island | Snohomish | | 169 | 153 | 16 | |
| Eliza Island | Whatcom | 0.22 | 32 | 18 | 14 | |
| Eliza Rock | Whatcom | | 0 | 0 | 0 | |
| Fawn Island | San Juan | | 0 | 0 | 0 | |
| Fidalgo Island | Skagit | 41.19 | 25,289 | 22,653 | 2,636 | |
| Fir Island | Skagit | 15.5 | 445 | 418 | 27 | |
| Fisher Island | Cowlitz | | 0 | 0 | 0 | |
| Flattop Island | San Juan | | 0 | 0 | 0 | |
| Florence Island | Snohomish | | | | | |
| Flower Island | San Juan | 0.007 | 0 | 0 | 0 | |
| Fortress Island | San Juan | 0.005 | 0 | 0 | 0 | Entire island preserved as part of San Juan Islands National Wildlife Refuge. |
| Fox Island | Pierce | 5.2 | 4,113 | 3,625 | 488 | |
| Freeman Island | San Juan | | 0 | 0 | 0 | Entire island preserved as part of San Juan Islands National Monument. |
| Frost Island | San Juan | 0.1 | 3 | 3 | 0 | |
| Gedney Island | Snohomish | | 84 | 41 | 43 | |
| Goat Island | Skagit | | 0 | 0 | 0 | |
| Goose Island | San Juan | 0.006 | 0 | 0 | 0 | |
| Gossip Island | San Juan | | 0 | 0 | 0 | |
| Guemes Island | Skagit | | 824 | 667 | 157 | |
| Guss Island | San Juan | | 0 | 0 | 0 | |
| Hall Island | San Juan | | 0 | 0 | 0 | |
| Harbor Island | King | 0.5 | 0 | 0 | 0 | |
| Harnden Island | San Juan | | 0 | 0 | 0 | |
| Harstine Island | Mason | 18.7 | 1,600 | 1,412 | 188 | |
| Hart Island | Skagit | | 0 | 0 | 0 | |
| Hat Island | Skagit | 0.6825 | 0 | 0 | 0 | |
| Henry Island | San Juan | 1.59 | 30 | 19 | 11 | |
| Herron Island | Pierce | 0.48 | 211 | 151 | 60 | |
| Holmes Island | Thurston | | | | | |
| Hope Island | Mason | 0.165625 | 0 | 0 | 0 | |
| Hope Island | Skagit | | 0 | 0 | 0 | |
| Huckleberry Island | Skagit | | 0 | 0 | 0 | |
| Iceberg Island | San Juan | | 0 | 0 | 0 | |
| Ika Island | Skagit | 0.58 | 0 | 0 | 0 | |
| Indian Island | Jefferson | 4.36 | 53 | 53 | 0 | |
| Jack Island | Skagit | | 0 | 0 | 0 | |
| Jackson / Whites Island | Wahkiakum | | 0 | 0 | 0 | |
| James Island | San Juan | 0.07 | 0 | 0 | 0 | |
| Jetty Island | Snohomish | 2.81 | 0 | 0 | 0 | |
| Johns Island | San Juan | 0.36 | 9 | 9 | 0 | |
| Jones Island | San Juan | 0.29 | 0 | 0 | 0 | Entire island preserved as Jones Island State Park. |
| Ketron Island | Pierce | | 16 | 17 | -1 | |
| Lawson Rock | San Juan | | 0 | 0 | 0 | |
| Leque Island | Snohomish | | 0 | 0 | 0 | |
| Little Deadman Island | Skagit | | 0 | 0 | 0 | |
| Little Island | Wahkiakum | | 160 | 146 | 14 | |
| Little Patos Island | San Juan | | 0 | 0 | 0 | |
| Little Sucia Island | San Juan | | 0 | 0 | 0 | |
| Locke Island | Adams | | 0 | 0 | 0 | Preserved as part of the Hanford Reach National Monument. |
| Lone Tree / The Sisters Islands | San Juan | | 0 | 0 | 0 | |
| Long Island | Pacific | 8.37 | 0 | 0 | 0 | |
| Lopez Island | San Juan | 29.81 | 2,596 | 2,380 | 216 | |
| Low Island | San Juan | | 0 | 0 | 0 | |
| Lummi Island | Whatcom | 9.25 | 1,060 | 946 | 114 | |
| Lummi Rocks | Whatcom | | 0 | 0 | 0 | |
| Marrowstone Island | Jefferson | 6.3 | 940 | 844 | 96 | |
| Matia Island | San Juan | 0.23 | 0 | 0 | 0 | |
| Maury Island | King | | 1,869 | 1,824 | 45 | |
| McConnell Island | San Juan | 0.05 | 0 | 0 | 0 | |
| McMicken Island | Mason | | 0 | 0 | 0 | |
| McNeil Island | Pierce | 6.63 | 298 | 1,506 | -1,208 | |
| Mercer Island | King | 12.9 | 24,470 | 22,699 | 1,771 | |
| Milltown Island | Skagit | | 0 | 0 | 0 | |
| Milltown Island | Snohomish | | 0 | 0 | 0 | |
| Nob Island | San Juan | | 0 | 0 | 0 | |
| North Finger / South Finger Islands | San Juan | | 3 | 2 | 1 | |
| O'Neal Island | San Juan | | 1 | 0 | 1 | |
| Obstruction Island | San Juan | 0.34 | 19 | 14 | 5 | |
| Orcas Island | San Juan | 57.3 | 5,632 | 5,220 | 412 | |
| Pass Island | Skagit | | 0 | 0 | 0 | |
| Patos Island | San Juan | 0.32 | 0 | 0 | 0 | Entire island preserved as part of San Juan Islands National Monument. |
| Peapod Islands | San Juan | | 0 | 0 | 0 | |
| Pearl Island | San Juan | 0.06 | 10 | 8 | 2 | |
| Pete Moore Island | Cowlitz | | 0 | 0 | 0 | |
| Picnic / Sheep Island | San Juan | 0.002 | 0 | 0 | 0 | |
| Pitt Island | Pierce | | 0 | 0 | 0 | |
| Pointer Island | San Juan | | 0 | 0 | 0 | |
| Portage Island | Whatcom | 1.47 | 0 | 0 | 0 | |
| Posey Island | San Juan | 0.002 | 0 | 0 | 0 | Entire island preserved as Posey Island State Park. |
| Protection Island | Jefferson | 1.03 | 0 | 0 | 0 | |
| Puffin Island | San Juan | | 0 | 0 | 0 | |
| Puget Island | Wahkiakum | 7.48 | 735 | 685 | 50 | |
| Raft Island | Pierce | 0.31 | 500 | 459 | 41 | |
| Ram Island | San Juan | | 0 | 0 | 0 | |
| Reach / Treasure Island | Mason | 0.14 | 151 | 119 | 32 | |
| Reef Island | San Juan | | 0 | 0 | 0 | |
| Richardson Rock | San Juan | | 0 | 0 | 0 | |
| Rim Island | San Juan | | 0 | 0 | 0 | |
| Ripple Island | San Juan | | 0 | 0 | 0 | |
| Saddlebag Island | Skagit | 0.04 | 0 | 0 | 0 | Entire island preserved as Saddlebag Island State Park. |
| Samish Island | Skagit | | 750 | 626 | 124 | |
| San Juan Island | San Juan | 55.05 | 8,236 | 7,578 | 658 | |
| Satellite Island | San Juan | 0.18 | 0 | 0 | 0 | |
| Savage Island | Franklin | | 0 | 0 | 0 | |
| Scarborough Island | Clallam | | 0 | 0 | 0 | |
| Sentinel Island | San Juan | | 0 | 0 | 0 | |
| Shaw Island | San Juan | 7.70 | 260 | 238 | 22 | |
| Silcox Island | Pierce | | 11 | 10 | 1 | |
| Sinclair Island | Skagit | 1.59 | 17 | 13 | 4 | |
| Skagit Island | Skagit | | 0 | 0 | 0 | |
| Skipjack Island | San Juan | 0.06 | 0 | 0 | 0 | Entire island preserved as part of San Juan Islands National Wildlife Refuge. |
| Skull Island | San Juan | 0.005 | 0 | 0 | 0 | |
| Smith Island | Island | | 0 | 0 | 0 | |
| Smith Island | Snohomish | | 3 | 3 | 0 | |
| Spencer Island | Snohomish | | 16 | 16 | 0 | |
| Spieden Island | San Juan | 0.81 | 2 | 2 | 0 | |
| Spindle Rock | San Juan | | 0 | 0 | 0 | |
| Squaxin Island | Mason | 2.216 | 0 | 0 | 0 | |
| Steamboat Island | Thurston | 0.01 | 48 | 46 | 2 | |
| Strawberry Island | Island | | 0 | 0 | 0 | |
| Strawberry Island | Skagit | | 0 | 0 | 0 | |
| Stretch Island | Mason | 0.47 | 178 | 162 | 16 | |
| Stuart Island | San Juan | 2.88 | 36 | 29 | 7 | |
| Sucia Island | San Juan | 1.06 | 0 | 0 | 0 | |
| Swirl Island | San Juan | | 0 | 0 | 0 | |
| Tanglewood Island | Pierce | 0.03 | 8 | 8 | 0 | |
| Tatoosh Island | Clallam | 0.06 | 0 | 0 | 0 | |
| Towhead Island | Skagit | | 0 | 0 | 0 | |
| Trump Island | San Juan | | 3 | 3 | 0 | |
| Turn Island | San Juan | 0.05 | 0 | 0 | 0 | |
| Unknown Island 1 / Asotin County | Asotin | | 0 | 0 | 0 | |
| Unknown Island 1 / Benton County | Benton | | 7 | 7 | 0 | |
| Unknown Island 1 / Grant County | Grant | | 126 | 113 | 13 | |
| Vashon Island | King | 36.9 | 8,919 | 8,800 | 119 | |
| Vendovi Island | Skagit | 0.34 | 2 | 2 | 0 | |
| Victim Island | San Juan | | 0 | 0 | 0 | Entire island preserved as part of San Juan Islands National Monument. |
| Viti Rocks | Whatcom | | 0 | 0 | 0 | |
| Waadah Island | Clallam | 0.0636875 | 0 | 0 | 0 | |
| Waldon Island | Cowlitz | | 11 | 11 | 0 | |
| Waldron Island | San Juan | 4.6 | 112 | 106 | 6 | |
| Whale Rocks | San Juan | | 0 | 0 | 0 | |
| Whidbey Island | Island | 168.67 | 67,453 | 62,839 | 4,614 | |
| Williamson Rocks | Skagit | | 0 | 0 | 0 | |
| Willow Island | San Juan | | 0 | 0 | 0 | |
| Yellow Island | San Juan | 0.02 | 2 | 2 | 0 | |
| Young Island | Skagit | | 0 | 0 | 0 | |