Island County , Washington

Island County: County in the state of Washington, United States

Island County locator map
Location of Island County on Washington map.


Island County is a county located in the U.S. state of Washington. As of the 2010 census, the population was 78,506 and a population density of 59 people per km². After 10 years in 2020 county had an estimated population of 86,014 inhabitants. Its county seat is Coupeville. The county was created 168 years ago in 1852.

Shoreline at Fort Ebey StatePark image
Shoreline at Fort Ebey StatePark
Shoreline at Fort Ebey StatePark image


Island County is located at 48°12'30"N 122°40'9"W (48.2082000, -122.6692200). It has 5 neighbors: Jefferson County, Kitsap County, San Juan County, Skagit County and Snohomish County.

Island County map

The largest city of Island County is Oak Harbor with a population of 23,643. Other cities include and Langley population 1,148. See all Island County cities & populated places.


Island County forecast: Mostly cloudy, with a low around 51. more

Island County Quick Facts

Population : 86,014 (2020)
Country : United States of America
State : Washington (United States)
Different from : County island
Area : 1340 km2
Water as percent of area : 60%
Land as percent of area : 40%
Named for : Whidbey Island
Altitude : 308 feet / 94 meters
Capital : Coupeville
Establishment : January 01, 1853
Time Zone : America/Los_Angeles
Local time : 13:39:41 (23rd September 2021)
Density : 64 Pop. per km² as of 2020
Population growth : 8.73% (2010-2020)
Weather : 51℉ Mostly Cloudy 7-days weather

Island County has 5 neighbours.

  • Coupeville


The population of Island County increased by 8.73% in 10 years.

Year Population % Change Method
2010 78,506 - census
2011 78,941 0.55% estimation process
2012 79,039 0.12% estimation process
2013 78,198 -1.08% estimation process
2014 78,690 0.63% estimation process
2015 80,022 1.66% estimation process
2016 81,692 2.04% estimation process
2017 83,250 1.87% estimation process
2018 84,227 1.16% estimation process
2019 85,141 1.07% estimation process
2020 86,014 1.01% estimation process

Ajlend, Ajlund, Comitatul Island, Comte d'Island, Comte dIsland, Comté d'Island, Comté dIsland, Condado de Island, Condado han Island, Contea di Island, Hrabstwo Island, Island, Island Kun, Island Kūn, Island konderria, Island megye, Kantono Island, Okrug Ajland, Quan Island, Quận Island, a'ilyanda ka'unti, ai lan xian, aillaendeu gun, airando jun, mqatʿt ayland, shhrstan ayslnd washyngtn, Айленд, Айлънд, Округ Ајланд, آئیلینڈ کاؤنٹی, جزیرہ کاؤنٹی، واشنگٹن, شهرستان ایسلند، واشینگتن, مقاطعة آيلاند, আইল্যান্ড কাউন্টি, アイランド郡, 艾兰县, 아일랜드 군

Other places with the same name (1)

Island County Populated Places

Cities, Towns, Neighborhoods & Other Populated Places in Island County.

City Name Population Title
Oak Harbor 23,643 City in Washington
Camano 14,202 Census designated place
Coupeville 1,994 Town in Washington (state), U.
Langley 1,148 City in British Columbia

Washington Other Counties (more counties)

County Name Population Title
King County 2,274,315 County in the state of Washington, United States
Pierce County 913,890 County in the state of Washington, United States
Snohomish County 830,393 County in the state of Washington, United States
Seattle 769,714 City in Washington, United States; county seat of King County
Spokane County 528,225 County in the state of Washington, United States
Clark County 496,865 County in Washington, United States
Thurston County 294,074 County in the state of Washington, United States
Kitsap County 272,787 County in the state of Washington, United States
Yakima County 251,879 County in the state of Washington, United States
Whatcom County 231,016 County in the state of Washington, United States
Spokane 222,050 County seat of Spokane County, Washington, United States
Tacoma 219,945 County seat of Pierce County, Washington, United States
Benton County 206,426 County in Arkansas, United States
Vancouver 186,192 City in Washington, United States and the largest suburb of Portland, Oregon
Bellevue 148,073 City in King County, Washington, United States
Skagit County 130,789 County in the state of Washington, United States