Oak Harbor, Washington

Oak Harbor population, 2020 to 2024

Oak Harbor lost 465 residents from July 2020 to July 2024, a change of -1.9%. In the latest year it moved by +86. Among 125 Washington places of 5,000 or more, that growth ranks 116th; the median place changed by +2.6%. The median place of 5,000+ in Washington has 18,148 people, so Oak Harbor is 1.3 times that size.

Oak Harbor covers 9.66 square miles of land and 2.66 of water, for 2,501 people per square mile of land. The median Washington place of 5,000+ has 2,694, so Oak Harbor is close to the typical town.

What county Oak Harbor is in

All of Oak Harbor's residents live in Island County, which had 86,478 residents in 2024. Oak Harbor holds 27.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Oak Harbor

1 ZIP Code Tabulation Area (ZCTA) overlaps Oak Harbor by at least 10% of the ZCTA's or the city's land: 98277. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Oak Harbor is

The Census internal point of Oak Harbor is at 48.293800, -122.628200. Olympia, the capital, is 87.8 miles S in a straight line. The nearest larger place is Mount Vernon, WA (35,344 people), 16.8 miles away. The nearest city of 100,000 or more is Everett, WA, 30.4 miles away.

Daylight in Oak Harbor

At 48.29° N, Oak Harbor gets about 16 h 06 min of daylight around the June solstice and 8 h 20 min around the December solstice, a swing of 7 h 46 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Oak Harbor

The eight nearest incorporated places of 1,000+ in Washington, measured between internal points. The closest is Coupeville, 5.7 miles away, with 1,935 people.