Kennewick, Washington

Kennewick population, 2020 to 2024

Kennewick added 2,728 residents from July 2020 to July 2024, a change of +3.2%. In the latest year it moved by +813. Among 125 Washington places of 5,000 or more, that growth ranks 57th; the median place changed by +2.6%. The median place of 5,000+ in Washington has 18,148 people, so Kennewick is 4.8 times that size.

Kennewick covers 28.51 square miles of land and 1.39 of water, for 3,042 people per square mile of land. The median Washington place of 5,000+ has 2,694, so Kennewick is denser than the typical town.

What county Kennewick is in

All of Kennewick's residents live in Benton County, which had 218,190 residents in 2024. Kennewick holds 39.7% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Kennewick

3 ZIP Code Tabulation Areas (ZCTAs) overlap Kennewick by at least 10% of the ZCTA's or the city's land: 99336, 99337, 99338. 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 Kennewick is

The Census internal point of Kennewick is at 46.197600, -119.175900. Olympia, the capital, is 186.0 miles WNW in a straight line. The nearest larger place is Yakima, WA (97,390 people), 70.9 miles away. The nearest city of 100,000 or more is Spokane, WA, 130.6 miles away.

Daylight in Kennewick

At 46.20° N, Kennewick gets about 15 h 47 min of daylight around the June solstice and 8 h 37 min around the December solstice, a swing of 7 h 10 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Kennewick

The eight nearest incorporated places of 1,000+ in Washington, measured between internal points. The closest is Pasco, 5.4 miles away, with 81,724 people.