Washington, Iowa

Washington population, 2020 to 2024

Washington lost 67 residents from July 2020 to July 2024, a change of -0.9%. In the latest year it moved by +7. Among 85 Iowa places of 5,000 or more, that growth ranks 64th; the median place changed by +1.1%. The median place of 5,000+ in Iowa has 9,511 people, so Washington is 77% of it.

Washington covers 5.42 square miles of land, for 1,343 people per square mile of land. The median Iowa place of 5,000+ has 1,363, so Washington is close to the typical town.

What county Washington is in

All of Washington's residents live in Washington County, which had 22,631 residents in 2024. Washington holds 32.2% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Washington

1 ZIP Code Tabulation Area (ZCTA) overlaps Washington by at least 10% of the ZCTA's or the city's land: 52353. 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 Washington is

The Census internal point of Washington is at 41.297900, -91.693700. Des Moines, the capital, is 101.0 miles WNW in a straight line. The nearest larger place is Mount Pleasant, IA (8,509 people), 24.4 miles away. The nearest city of 100,000 or more is Cedar Rapids, IA, 46.0 miles away.

Daylight in Washington

At 41.30° N, Washington gets about 15 h 10 min of daylight around the June solstice and 9 h 12 min around the December solstice, a swing of 5 h 58 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Washington

The eight nearest incorporated places of 1,000+ in Iowa, measured between internal points. The closest is Kalona, 13.1 miles away, with 2,762 people.