| NUMBER | NAME | COUNTY | LAT | LON |
| WA01 | Abbey Island | Jefferson | 474254N | 1242512W |
| WA02 | Ackerman Island | Clark | 453424N | 1222721W |
| WA02 | Agnes Island | Lewis | 463530N | 1213347W |
| WA06 | Aleck Rocks | San Juan | 482523N | 1225056W |
| WA06 | Alegria Island | San Juan | 483617N | 1225820W |
| WA01 | Alexander Island | Jefferson | 474755N | 1243019W |
| WA05 | Allan Island | Skagit | 482753N | 1224218W |
| WA04 | Anderson Island | Pierce | 470936N | 1224218W |
| WA06 | Armitage Island | San Juan | 483207N | 1224742W |
| WA01 | Baby Island | Clallam | 480301N | 1243742W |
| WA04 | Baby Island | Island | 480558N | 1223134W |
| WA02 | Bachelor Island | Clark | 454909N | 1224627W |
| WA09 | Badger Island | Walla Walla | 460633N | 1185608W |
| WA01 | Bainbridge Island | Kitsap | 473835N | 1223228W |
| WA05 | Bald Island | Skagit | 482221N | 1222911W |
| WA04 | Bankers Island | Pierce | 471314N | 1221050W |
| WA06 | Bare Island | San Juan | 484346N | 1230048W |
| WA04 | Barlow Island | Pierce | 470706N | 1223426W |
| WA10 | Barnaby Island | Ferry | 482645N | 1181248W |
| WA06 | Barnes Island | San Juan | 484202N | 1224626W |
| WA06 | Barren Island | San Juan | 483723N | 1230933W |
| WA08 | Bateman Island | Benton | 461502N | 1191344W |
| WA06 | Battleship Island | San Juan | 483729N | 1231102W |
| WA02 | Bead Island | Clark | 453452N | 1222348W |
| WA04 | Beard Island | Pierce | 470720N | 1223411W |
| WA06 | Bell Island | San Juan | 483547N | 1225846W |
| WA04 | Ben Ure Island | Island | 482413N | 1223741W |
| WA01 | Bents Island | Grays Harbor | 465700N | 1233915W |
| WA08 | Big Blalock Island | Benton | 455453N | 1193705W |
| WA08 | Big Rock Island | Grant | 473511N | 1192413W |
| WA06 | Bird Rock | San Juan | 483553N | 1230048W |
| WA06 | Bird Rocks | San Juan | 482910N | 1224536W |
| WA10 | Bissell Island | Ferry | 481615N | 1180845W |
| WA06 | Black Rock | San Juan | 483246N | 1224552W |
| WA01 | Blake Island | Kitsap | 473220N | 1222930W |
| WA15 | Blakely Island | San Juan | 483344N | 1224801W |
| WA08 | Blalock Island | Benton | 455453N | 1193705W |
| WA08 | Blalock Islands | Benton | 455420N | 1193810W |
| WA06 | Blind Island | San Juan | 483506N | 1225608W |
| WA06 | Blind Island | San Juan | 482525N | 1224935W |
| WA01 | Bodelteh Islands | Clallam | 481032N | 1244524W |
| WA04 | Bogucki Island | Pierce | 464732N | 1221811W |
| WA06 | Boulder Island | San Juan | 482557N | 1224804W |
| WA07 | Brant Island | Whatcom | 484337N | 1223737W |
| WA06 | Brown Island | San Juan | 483220N | 1230016W |
| WA03 | Browns Island | Klickitat | 453920N | 1210218W |
| WA02 | Browns Island | Wahkiakum | 461026N | 1232117W |
| WA06 | Buck Island | San Juan | 482709N | 1225510W |
| WA02 | Burke Island | Cowlitz | 455605N | 1224727W |
| WA05 | Burrows Island | Skagit | 482846N | 1224204W |
| WA06 | Cactus Island | San Juan | 483858N | 1230742W |
| WA06 | Cactus Islands | San Juan | 483857N | 1230740W |
| WA01 | Cakesosta | Clallam | 475303N | 1243808W |
| WA04 | Camano Island | Island | 481130N | 1223050W |
| WA10 | Canada Island | Spokane | 473940N | 1172513W |
| WA05 | Canoe | Skagit | 482425N | 1223829W |
| WA06 | Canoe Island | San Juan | 483330N | 1225529W |
| WA01 | Carroll Island | Clallam | 480019N | 1244325W |
| WA03 | Cascades Island | Skamania | 453840N | 1215640W |
| WA09 | Casey Island | Walla Walla | 460947N | 1185708W |
| WA06 | Castle Island | San Juan | 482517N | 1224914W |
| WA07 | Cat Island | Whatcom | 485259N | 1210210W |
| WA02 | Caterpillar Island | Clark | 454202N | 1224538W |
| WA06 | Cayou Island | San Juan | 482848N | 1224943W |
| WA06 | Cemetery Island | San Juan | 483952N | 1231025W |
| WA06 | Center Island | San Juan | 482924N | 1224949W |
| WA07 | Cha-Choo-Sen | Whatcom | 484732N | 1223952W |
| WA06 | Charles Island | San Juan | 482633N | 1225423W |
| WA07 | Chuckanut Island | Whatcom | 484038N | 1222959W |
| WA06 | Clark Island | San Juan | 484206N | 1224547W |
| WA06 | Cliff Island | San Juan | 483525N | 1230047W |
| WA08 | Clover Island | Benton | 461302N | 1190651W |
| WA06 | Cluster Islands | San Juan | 484550N | 1225308W |
| WA02 | Coffee Pot Island | Wahkiakum | 460948N | 1232359W |
| WA06 | Colville Island | San Juan | 482455N | 1224914W |
| WA05 | Cone Islands | Skagit | 483533N | 1224027W |
| WA10 | Cooks Island | Pend Oreille | 481221N | 1170247W |
| WA06 | Coon Island | San Juan | 483542N | 1230104W |
| WA04 | Cors Island | Pierce | 470711N | 1223418W |
| WA02 | Cottonwood Island | Cowlitz | 460422N | 1225244W |
| WA07 | Cougar Island | Whatcom | 484509N | 1210138W |
| WA06 | Crab Island | San Juan | 482744N | 1225037W |
| WA05 | Craft Island | Skagit | 482110N | 1222817W |
| WA06 | Crane Island | San Juan | 483549N | 1225941W |
| WA09 | Crescent Island | Walla Walla | 460538N | 1185548W |
| WA08 | Crest Island | Grant | 470732N | 1191822W |
| WA04 | Cutts Island | Pierce | 471916N | 1224109W |
| WA14 | Cypress Island | Skagit | 483427N | 1224227W |
| WA01 | Dahdayla | Clallam | 475619N | 1244002W |
| WA04 | Days Island | Pierce | 471430N | 1223341W |
| WA06 | Deadman Island | San Juan | 482730N | 1225632W |
| WA05 | Deadman Island | Skagit | 482313N | 1223223W |
| WA15 | Decatur Island | San Juan | 483028N | 1224838W |
| WA04 | Deception Island | Island | 482427N | 1224012W |
| WA04 | Deer Island | Pierce | 471333N | 1221125W |
| WA01 | Destruction Island | Jefferson | 474029N | 1242903W |
| WA06 | Dinner Island | San Juan | 483027N | 1230025W |
| WA06 | Doe Island | San Juan | 483759N | 1224710W |
| WA05 | Dot Island | Skagit | 483203N | 1223308W |
| WA05 | Dot Island | Skagit | 482228N | 1223202W |
| WA06 | Double Island | San Juan | 483625N | 1225816W |
| WA07 | Driscoll Island | Okanogan | 485448N | 1192548W |
| WA04 | Duck Island | King | 474100N | 1222024W |
| WA01 | Duntze Rock | Clallam | 482438N | 1244432W |
| WA04 | Eagle Island | Pierce | 471116N | 1224142W |
| WA04 | Ebey Island | Snohomish | 475811N | 1220938W |
| WA03 | Eighteenmile Island | Klickitat | 454123N | 1212515W |
| WA07 | Eliza Island | Whatcom | 483909N | 1223456W |
| WA04 | Emerald Island | Chelan | 474832N | 1204344W |
| WA04 | Enchanted Island | Pierce | 470657N | 1222650W |
| WA05 | Erickson Island | Skagit | 481840N | 1222119W |
| WA06 | Ewing Island | San Juan | 484553N | 1225244W |
| WA07 | Eyhott Island | Okanogan | 485341N | 1192605W |
| WA06 | Fawn Island | San Juan | 483650N | 1230021W |
| WA04 | Ferry Baker Island | Snohomish | 480008N | 1221041W |
| WA05 | Fidalgo Island | Skagit | 482226N | 1223048W |
| WA05 | Fir Island | Skagit | 482056N | 1222356W |
| WA02 | Fisher Island | Cowlitz | 461003N | 1230323W |
| WA01 | Flat Rock | Grays Harbor | 472240N | 1242036W |
| WA01 | Flattery Rocks | Clallam | 481011N | 1244539W |
| WA06 | Flattop Island | San Juan | 483850N | 1230454W |
| WA06 | Flower Island | San Juan | 483241N | 1225109W |
| WA06 | Fortress Island | San Juan | 482756N | 1225014W |
| WA04 | Foster Island | King | 473841N | 1221735W |
| WA09 | Foundation Island | Walla Walla | 461005N | 1185953W |
| WA04 | Fox Island | Pierce | 471435N | 1223713W |
| WA08 | Fox Island | Benton | 461806N | 1191954W |
| WA01 | Frayles, Los | Clallam | 475337N | 1243840W |
| WA06 | Freeman Island | San Juan | 484158N | 1225702W |
| WA10 | French Point Rocks | Ferry | 483001N | 1181105W |
| WA06 | Frost Island | San Juan | 483221N | 1225041W |
| WA08 | Gaileys Island | Grant | 470442N | 1191857W |
| WA01 | Garden Island | Clallam | 480612N | 1243649W |
| WA04 | Gedney Island | Snohomish | 480044N | 1221902W |
| WA06 | Geese Islets | San Juan | 482628N | 1225500W |
| WA04 | Gertrude Island | Pierce | 471305N | 1223931W |
| WA01 | Giants Graveyard | Jefferson | 475109N | 1243359W |
| WA04 | Glacier Island | Pierce | 464913N | 1214917W |
| WA05 | Goat Island | Skagit | 482148N | 1223147W |
| WA08 | Goat Island | Grant | 470533N | 1191803W |
| WA02 | Goat Island | Cowlitz | 461816N | 1224619W |
| WA08 | Goose Island | Grant | 473855N | 1191723W |
| WA06 | Goose Island | San Juan | 482729N | 1225719W |
| WA08 | Goose Island | Grant | 463941N | 1195500W |
| WA01 | Goose Island | Grays Harbor | 465839N | 1240408W |
| WA09 | Goose Island | Walla Walla | 461436N | 1185426W |
| WA06 | Gordon Island | San Juan | 484351N | 1230114W |
| WA06 | Gossip Island | San Juan | 483948N | 1231017W |
| WA06 | Gossip Islands | San Juan | 483946N | 1231016W |
| WA01 | Grass Island | Grays Harbor | 465235N | 1240522W |
| WA02 | Grassy Island | Pacific | 463755N | 1240228W |
| WA18 | Guemes Island | Skagit | 483257N | 1223740W |
| WA06 | Gull Rock | San Juan | 483904N | 1230518W |
| WA06 | Guss Island | San Juan | 483506N | 1230911W |
| WA06 | Hall Island | San Juan | 482606N | 1225436W |
| WA03 | Hamilton Island | Skamania | 453752N | 1215839W |
| WA06 | Happy Island | San Juan | 483958N | 1230917W |
| WA04 | Harbor Island | King | 473448N | 1222103W |
| WA06 | Harnden Island | San Juan | 484507N | 1225357W |
| WA09 | Harper Island | Adams | 471449N | 1180458W |
| WA01 | Harstine Island | Mason | 471355N | 1225306W |
| WA05 | Hart Island | Skagit | 482910N | 1221531W |
| WA05 | Hat Island | Skagit | 483127N | 1223248W |
| WA10 | Havermale Island | Spokane | 473937N | 1172500W |
| WA10 | Hellgate Island | Ferry | 475556N | 1183658W |
| WA06 | Henry Island | San Juan | 483615N | 1231113W |
| WA04 | Herron Island | Pierce | 471555N | 1225003W |
| WA01 | Higgins Island | Grays Harbor | 465728N | 1234200W |
| WA02 | Holmes Island | Thurston | 470128N | 1224646W |
| WA08 | Homestead Island | Franklin | 462833N | 1191521W |
| WA01 | Hood Head | Jefferson | 475304N | 1223710W |
| WA01 | Hope Island | Mason | 471115N | 1225539W |
| WA05 | Hope Island | Skagit | 482401N | 1223358W |
| WA05 | Huckleberry Island | Skagit | 483213N | 1223403W |
| WA02 | Hump Island | Cowlitz | 460945N | 1230330W |
| WA02 | Hunting Islands | Wahkiakum | 461322N | 1232424W |
| WA06 | Iceberg Island | San Juan | 482538N | 1225320W |
| WA05 | Ika Island | Skagit | 482146N | 1222956W |
| WA02 | Indian Island | Cowlitz | 461803N | 1224539W |
| WA08 | Indian Island | Franklin | 461210N | 1190318W |
| WA01 | Indian Island | Jefferson | 480308N | 1224327W |
| WA10 | Indian Island | Pend Oreille | 481426N | 1170950W |
| WA04 | Interlake Island | Pierce | 471237N | 1220848W |
| WA06 | Iowa Rock | San Juan | 482508N | 1225305W |
| WA04 | Island A | Pierce | 471346N | 1220920W |
| WA04 | Island B | Pierce | 471310N | 1220920W |
| WA04 | Island Twentyone | Pierce | 471340N | 1221120W |
| WA10 | Island, The | Stevens | 480857N | 1174515W |
| WA08 | Island, The | Benton | 461858N | 1192902W |
| WA03 | Ives Island | Skamania | 453727N | 1215934W |
| WA05 | Jack Island | Skagit | 483453N | 1223640W |
| WA02 | Jackson Island | Wahkiakum | 461003N | 1232045W |
| WA01 | Jagged Island | Clallam | 475951N | 1244139W |
| WA06 | James Island | San Juan | 483046N | 1224626W |
| WA01 | James Island | Clallam | 475423N | 1243846W |
| WA04 | Jetty Island | Snohomish | 480025N | 1221340W |
| WA12 | Johns Island | San Juan | 483954N | 1230856W |
| WA08 | Johnson Island | Benton | 462311N | 1191604W |
| WA06 | Jones Island | San Juan | 483654N | 1230240W |
| WA04 | Kalamut Island | Island | 481618N | 1223703W |
| WA10 | Kamloops Island | Stevens | 484033N | 1180649W |
| WA04 | Kellogg Island | King | 473317N | 1222046W |
| WA10 | Kelly Island | Pend Oreille | 481138N | 1170214W |
| WA04 | Ketron Island | Pierce | 470924N | 1223755W |
| WA05 | Kiket Island | Skagit | 482510N | 1223357W |
| WA02 | Kindred Island | Pacific | 464305N | 1235858W |
| WA02 | Kirby Island | Thurston | 470101N | 1224510W |
| WA02 | Lady Island | Clark | 453428N | 1222459W |
| WA01 | Laidlaw Island | Grays Harbor | 465138N | 1240433W |
| WA10 | Lions Island | Stevens | 483540N | 1180718W |
| WA08 | Little Blalock Island | Benton | 455442N | 1193807W |
| WA05 | Little Deadman Island | Skagit | 482301N | 1223229W |
| WA02 | Little Island | Wahkiakum | 461107N | 1232235W |
| WA01 | Little James Island | Clallam | 475443N | 1243837W |
| WA07 | Little Jerusalem Island | Whatcom | 484634N | 1210147W |
| WA06 | Little Patos Island | San Juan | 484705N | 1225803W |
| WA06 | Little Sister | San Juan | 484124N | 1224530W |
| WA06 | Little Sucia Island | San Juan | 484516N | 1225457W |
| WA08 | Locke Island | Grant | 464220N | 1192759W |
| WA09 | Log Cabin Island | Whitman | 463941N | 1172549W |
| WA06 | Lone Tree Island | San Juan | 484141N | 1224521W |
| WA02 | Long Island | Pacific | 462708N | 1235803W |
| WA06 | Long Island | San Juan | 482628N | 1225523W |
| WA06 | Lopez Island | San Juan | 482844N | 1225330W |
| WA02 | Louse Rocks | Pacific | 462450N | 1235808W |
| WA06 | Low Island | San Juan | 483237N | 1230948W |
| WA06 | Low Island | San Juan | 483521N | 1230127W |
| WA07 | Lummi Island | Whatcom | 484145N | 1224010W |
| WA07 | Lummi Rocks | Whatcom | 484016N | 1223957W |
| WA10 | Marcus Island | Stevens | 484006N | 1180322W |
| WA01 | Marrowstone Island | Jefferson | 480321N | 1224113W |
| WA08 | Marsh Island | Grant | 470616N | 1191733W |
| WA04 | Marsh Island | King | 473847N | 1221744W |
| WA02 | Martin Island | Cowlitz | 455648N | 1224737W |
| WA13 | Matia Island | San Juan | 484449N | 1225011W |
| WA04 | Maury Island | King | 472238N | 1222543W |
| WA06 | McConnell Island | San Juan | 483548N | 1230116W |
| WA05 | McGlinn Island | Skagit | 482227N | 1223013W |
| WA01 | McMicken Island | Mason | 471454N | 1225140W |
| WA04 | McNeil Island | Pierce | 471242N | 1224114W |
| WA09 | McNeill Island | Asotin | 460103N | 1172059W |
| WA03 | Memaloose Island | Klickitat | 453707N | 1210706W |
| WA04 | Mercer Island | King | 473342N | 1221313W |
| WA01 | Middle Ground, The | Clallam | 480430N | 1230221W |
| WA03 | Miller Island | Klickitat | 453901N | 1205406W |
| WA05 | Milltown Island | Skagit | 481843N | 1222103W |
| WA04 | Minor Island | Island | 481928N | 1224907W |
| WA08 | Monument Island | Benton | 455534N | 1193620W |
| WA01 | Moon Island | Grays Harbor | 465822N | 1235554W |
| WA06 | Mummy Rocks | San Juan | 482658N | 1225540W |
| WA01 | Neds Rock | Grays Harbor | 465922N | 1240130W |
| WA08 | Nelson Island | Benton | 461816N | 1191535W |
| WA09 | New York Island | Columbia | 463615N | 1175225W |
| WA06 | Nob Island | San Juan | 483528N | 1230100W |
| WA06 | North Finger Island | San Juan | 484515N | 1225300W |
| WA06 | North Peapod | San Juan | 483832N | 1224441W |
| WA05 | Northwest Island | Skagit | 482509N | 1224008W |
| WA06 | O'Neal Island | San Juan | 483614N | 1230528W |
| WA06 | Oak Island | San Juan | 483628N | 1225711W |
| WA06 | Obstruction Island | San Juan | 483545N | 1224840W |
| WA04 | Ohlers Island | King | 473350N | 1221555W |
| WA06 | Orcas Island | San Juan | 483916N | 1225613W |
| WA01 | Ozette Island | Clallam | 480926N | 1244454W |
| WA05 | Pass Island | Skagit | 482427N | 1223830W |
| WA13 | Patos Island | San Juan | 484705N | 1225711W |
| WA06 | Peapod Rocks | San Juan | 483810N | 1224505W |
| WA06 | Pearl Island | San Juan | 483656N | 1230950W |
| WA09 | Peavine Island | Walla Walla | 460839N | 1185734W |
| WA02 | Pete Moore Island | Cowlitz | 461717N | 1224908W |
| WA06 | Picnic Island | San Juan | 483740N | 1225725W |
| WA03 | Pierce Island | Skamania | 453720N | 1220027W |
| WA02 | Pine Island | Pacific | 464010N | 1235721W |
| WA04 | Pitt Island | Pierce | 471324N | 1224252W |
| WA06 | Pointer Island | San Juan | 483219N | 1224651W |
| WA06 | Pointers, The | San Juan | 483222N | 1224657W |
| WA06 | Pole | San Juan | 483603N | 1231000W |
| WA07 | Portage Island | Whatcom | 484209N | 1223659W |
| WA06 | Posey | San Juan | 483707N | 1230959W |
| WA06 | Posey Island | San Juan | 483707N | 1230959W |
| WA02 | Price Island | Wahkiakum | 461524N | 1232631W |
| WA01 | Protection Island | Jefferson | 480741N | 1225530W |
| WA06 | Puffin Island | San Juan | 484441N | 1224912W |
| WA02 | Puget Island | Wahkiakum | 461010N | 1232244W |
| WA04 | Raft Island | Pierce | 471946N | 1224004W |
| WA06 | Ram Island | San Juan | 482837N | 1224950W |
| WA10 | Rat Island | Pend Oreille | 481157N | 1170218W |
| WA01 | Reach Island | Mason | 472028N | 1224923W |
| WA02 | Reed Island | Clark | 453308N | 1221811W |
| WA06 | Reef Island | San Juan | 483616N | 1230054W |
| WA06 | Reef Point | San Juan | 483142N | 1225808W |
| WA01 | Rennie Island | Grays Harbor | 465748N | 1235152W |
| WA07 | Reveille Island | Whatcom | 484249N | 1221827W |
| WA06 | Richardson Rock | San Juan | 482652N | 1225408W |
| WA06 | Rim Island | San Juan | 482858N | 1224923W |
| WA06 | Ripple Island | San Juan | 483926N | 1230744W |
| WA08 | Rock Island | Benton | 455438N | 1193740W |
| WA08 | Rock Island | Douglas | 472040N | 1200548W |
| WA05 | Ross Island | Skagit | 483020N | 1220641W |
| WA02 | Round Island | Pacific | 462340N | 1235732W |
| WA01 | Rounded Island | Jefferson | 474950N | 1243312W |
| WA02 | Ruby Island | Pacific | 461650N | 1240252W |
| WA02 | Ryan Island | Wahkiakum | 461224N | 1232450W |
| WA05 | Saddlebag Island | Skagit | 483210N | 1223318W |
| WA05 | Samish Island | Skagit | 483426N | 1223143W |
| WA06 | San Juan Island | San Juan | 483228N | 1230505W |
| WA06 | San Juan Islands | San Juan | 483500N | 1225800W |
| WA02 | Sand Island | Pacific | 461635N | 1240114W |
| WA02 | Sand Island | Clark | 453430N | 1222734W |
| WA01 | Sand Island | Grays Harbor | 465743N | 1240325W |
| WA01 | Sand Island | Grays Harbor | 465703N | 1234346W |
| WA08 | Sand Island | Benton | 455340N | 1193825W |
| WA01 | Sandy Island | Clallam | 475913N | 1244117W |
| WA06 | Satellite Island | San Juan | 484054N | 1231124W |
| WA08 | Savage Island | Franklin | 463251N | 1191804W |
| WA04 | Scout Island | Pierce | 471237N | 1220854W |
| WA01 | Sea Lion Rock | Grays Harbor | 472657N | 1242408W |
| WA01 | Sea Lion Rock | Clallam | 475929N | 1244334W |
| WA06 | Secar Rock | San Juan | 482616N | 1225419W |
| WA12 | Sentinel Island | San Juan | 483823N | 1230858W |
| WA06 | Shag Rock | San Juan | 483529N | 1225226W |
| WA06 | Shaw Island | San Juan | 483421N | 1225703W |
| WA06 | Shipjack Island | San Juan | 484357N | 1230210W |
| WA04 | Short Island | Pierce | 470717N | 1223411W |
| WA09 | Silcott Island | Asotin | 462502N | 1171115W |
| WA04 | Silcox Island | Pierce | 470745N | 1223349W |
| WA14 | Sinclair Island | Skagit | 483715N | 1224034W |
| WA06 | Sisters, The | San Juan | 484129N | 1224529W |
| WA05 | Skagit Island | Skagit | 482450N | 1223440W |
| WA03 | Skamania Island | Skamania | 453525N | 1220710W |
| WA06 | Skipjack Island | San Juan | 484355N | 1230205W |
| WA05 | Skiyou Island | Skagit | 482942N | 1220950W |
| WA06 | Skull Island | San Juan | 483822N | 1225906W |
| WA06 | Skull Island | San Juan | 482757N | 1224956W |
| WA06 | Skull Island | San Juan | 482757N | 1224953W |
| WA06 | Skull Rock | San Juan | 483822N | 1225910W |
| WA01 | Skunk Island | Jefferson | 480149N | 1224449W |
| WA06 | Small Island | San Juan | 482944N | 1225143W |
| WA10 | Smelter Rock | Stevens | 485525N | 1174608W |
| WA04 | Smith Island | Island | 481909N | 1225026W |
| WA04 | Smith Island | Snohomish | 480133N | 1221131W |
| WA02 | Snag Islands | Pacific | 464006N | 1235737W |
| WA08 | Songbird Island | Benton | 461744N | 1192819W |
| WA06 | South Finger Island | San Juan | 484517N | 1225332W |
| WA06 | South Peapod | San Juan | 483802N | 1224527W |
| WA04 | Spencer Island | Snohomish | 475936N | 1220924W |
| WA06 | Spieden Island | San Juan | 483826N | 1230757W |
| WA01 | Split Rock | Grays Harbor | 472424N | 1242134W |
| WA02 | Squaw Island | Clark | 455057N | 1224639W |
| WA03 | Squaw Islands | Klickitat | 453855N | 1211149W |
| WA01 | Squaxin Island | Mason | 471142N | 1225433W |
| WA02 | Steamboat Island | Thurston | 471107N | 1225619W |
| WA09 | Steamboat Island | Asotin | 461059N | 1165626W |
| WA10 | Steamboat Rock | Stevens | 485613N | 1174459W |
| WA05 | Strawberry Island | Skagit | 483344N | 1224403W |
| WA04 | Strawberry Island | Island | 482425N | 1223750W |
| WA08 | Strawberry Island | Franklin | 461354N | 1185928W |
| WA01 | Stretch Island | Mason | 471927N | 1224928W |
| WA12 | Stuart Island | San Juan | 484045N | 1231238W |
| WA13 | Sucia Island | San Juan | 484544N | 1225443W |
| WA13 | Sucia Islands | San Juan | 484544N | 1225358W |
| WA05 | Sugarloaf Island | Skagit | 482217N | 1223151W |
| WA06 | Sunken Rock | San Juan | 483013N | 1230822W |
| WA06 | Swirl Island | San Juan | 482506N | 1225052W |
| WA09 | Tanglefoot Island | Walla Walla | 460929N | 1185727W |
| WA04 | Tanglewood Island | Pierce | 471604N | 1223828W |
| WA11 | Tatoosh Island | Clallam | 482336N | 1244412W |
| WA08 | Telegraph Island | Benton | 455456N | 1193747W |
| WA07 | Tenmile Island | Whatcom | 485054N | 1210103W |
| WA06 | Tift Rocks | San Juan | 483440N | 1225947W |
| WA01 | Tivoli Island | Clallam | 480403N | 1243815W |
| WA05 | Tonkon Island | Skagit | 482305N | 1223228W |
| WA05 | Towhead Island | Skagit | 483645N | 1224248W |
| WA04 | Towhead Island | Pierce | 471626N | 1223857W |
| WA01 | Treasure Island | Kitsap | 474156N | 1223202W |
| WA06 | Trump Island | San Juan | 483016N | 1225010W |
| WA01 | Tskawahyah Island | Clallam | 481015N | 1244402W |
| WA01 | Tunnel Island | Grays Harbor | 472745N | 1242032W |
| WA06 | Turn Island | San Juan | 483158N | 1225814W |
| WA06 | Twin Rocks | San Juan | 483657N | 1225149W |
| WA01 | Twins, The | Jefferson | 475501N | 1224140W |
| WA09 | Two Rivers Islands | Walla Walla | 460800N | 1185643W |
| WA06 | Utah Rock | San Juan | 482843N | 1230302W |
| WA08 | Van Skinner Island | Benton | 455748N | 1190407W |
| WA17 | Vashon Island | King | 472545N | 1222837W |
| WA05 | Vendovi Island | Skagit | 483639N | 1223613W |
| WA06 | Victim Island | San Juan | 483650N | 1225825W |
| WA05 | Viti Rocks | Skagit | 483801N | 1223715W |
| WA01 | Waadah Island | Clallam | 482256N | 1243546W |
| WA08 | Wade Island | Franklin | 461355N | 1191013W |
| WA02 | Waldon Island | Cowlitz | 461751N | 1224716W |
| WA13 | Waldron Island | San Juan | 484210N | 1230125W |
| WA07 | Washburn Island | Okanogan | 480530N | 1194010W |
| WA06 | Wasp Islands | San Juan | 483542N | 1230134W |
| WA06 | Whale Rocks | San Juan | 482650N | 1225628W |
| WA16 | Whidbey Island | Island | 481734N | 1224030W |
| WA08 | Whitcomb Island | Benton | 455220N | 1194400W |
| WA06 | White Rock | San Juan | 484004N | 1230413W |
| WA02 | Whites Island | Wahkiakum | 460920N | 1232002W |
| WA07 | Williams Island | Okanogan | 485433N | 1192539W |
| WA05 | Williamson Rocks | Skagit | 482659N | 1224217W |
| WA01 | Willoughby Rock | Grays Harbor | 472437N | 1242105W |
| WA06 | Willow Island | San Juan | 483225N | 1224915W |
| WA10 | Wiseman Island | Ferry | 484325N | 1183944W |
| WA08 | Wooded Island | Benton | 462557N | 1191554W |
| WA07 | Woody Island | Okanogan | 482102N | 1193542W |
| WA06 | Yellow Island | San Juan | 483532N | 1230153W |
| WA05 | Young Island | Skagit | 482828N | 1224122W |
| WA10 | Zipphel Island | Ferry | 484415N | 1184001W |
