Boundary Atlas

ZIP code 99116: Coulee Dam, WA

ZIP code 99116 is in Coulee Dam (82% of residents), in Okanogan County (86%), Douglas County (14%) and Grant County (<0.1%), Washington. 18% of its residents live outside city limits. It is in Washington's 4th congressional district. Its state senate district is Legislative (Senate) District 7; its state house district is Legislative (House) District 7.

1,476residents (2020 Census)
47.2 sq miland area
2cities and towns
1congressional district
6voting precincts

See it on the mapAll of Washington

City and county

City or townShare of ZIP residents
Coulee Dam82%
Elmer City0.3%

CountyShare of ZIP residents
Okanogan County86%
Douglas County14%
Grant Countyland only

Town or county subdivisionShare of ZIP residents
Colville Reservation CCD86%
Bridgeport CCD14%
Grand Coulee CCDland only

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 7)Shelly Short (R)100%
State Senator (Legislative (Senate) District 13)Judy Warnick (R)<0.1%
State Representative (Legislative (House) District 7)Andrew Engell (R)100%
State Representative (Legislative (House) District 7)Hunter Abell (R)100%
State Representative (Legislative (House) District 13)Alex Ybarra (R)<0.1%
State Representative (Legislative (House) District 13)Tom Dent (R)<0.1%

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 7100%
Legislative (Senate) District 13land only

State house districtShare of ZIP residents
Legislative (House) District 7100%
Legislative (House) District 13land only

Voting precincts

6 voting precincts overlap ZIP 99116. Map them, with each precinct's share of the ZIP's residents.

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ZIP 99116 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.