Boundary Atlas

ZIP code 99337: Kennewick, WA

ZIP code 99337 is in Kennewick (70% of residents) and Finley (18%), in Benton County, Washington. 11% of its residents live outside city limits. It is in Washington's 4th congressional district. Its state senate districts are Legislative (Senate) District 8 (77%) and Legislative (Senate) District 14 (23%); its state house districts are Legislative (House) District 8 (77%) and Legislative (House) District 14 (23%).

33,458residents (2020 Census)
165.9 sq miland area
2cities and towns
1congressional district
38voting precincts

See it on the mapAll of Washington

City and county

City or townShare of ZIP residents
Kennewick70%
Finley18%

CountyShare of ZIP residents
Benton County100%

Town or county subdivisionShare of ZIP residents
Richland-Kennewick CCD100%
South Benton CCD0.1%

Congressional district

Congressional districtShare of ZIP residents
Washington's 4th congressional district (WA-04)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (WA-04)Dan Newhouse (R)202-225-5816100%
U.S. SenatorMaria Cantwell (D)202-224-3441 · contact formstatewide
U.S. SenatorPatty Murray (D)202-224-2621 · contact formstatewide
State Senator (Legislative (Senate) District 8)Matt Boehnke (R)77%
State Senator (Legislative (Senate) District 14)Curtis King (R)23%
State Representative (Legislative (House) District 8)April Connors (R)77%
State Representative (Legislative (House) District 8)Stephanie Barnard (R)77%
State Representative (Legislative (House) District 14)Deb Manjarrez (R)23%
State Representative (Legislative (House) District 14)Gloria Mendoza (R)23%

Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).

Local government

State legislative districts

State senate districtShare of ZIP residents
Legislative (Senate) District 877%
Legislative (Senate) District 1423%

State house districtShare of ZIP residents
Legislative (House) District 877%
Legislative (House) District 1423%

Voting precincts

38 voting precincts overlap ZIP 99337. Map them, with each precinct's share of the ZIP's residents.

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ZIP 99337 here is the Census Bureau's ZIP Code Tabulation Area, which approximates the USPS ZIP Code; PO-box-only ZIPs have none. Districts are the maps in force for the November 3, 2026 election.