Boundary Atlas

ZIP code 50701: Waterloo, IA

ZIP code 50701 is in Waterloo (96% of residents), in Black Hawk County, Iowa. It is in Iowa's 2nd congressional district. Its state senate districts are State Senate District 31 (86%), State Senate District 38 (14%), State Senate District 34 (0.2%) and State Senate District 27 (<0.1%); its state house districts are State House District 61 (44%), State House District 62 (42%), State House District 76 (14%), State House District 68 (0.2%) and State House District 54 (<0.1%).

29,806residents (2020 Census)
79.1 sq miland area
2cities and towns
1congressional district
21voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Waterloo96%
Hudson<0.1%

CountyShare of ZIP residents
Black Hawk County100%

Town or county subdivisionShare of ZIP residents
Waterloo city96%
Orange township1.1%
Eagle township1.0%
Poyner township0.9%
Cedar township0.8%
Black Hawk township0.2%

Congressional district

Congressional districtShare of ZIP residents
Iowa's 2nd congressional district (IA-02)100%

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-02)Ashley Hinson (R)202-225-2911100%
U.S. SenatorChuck Grassley (R)202-224-3744 · contact formstatewide
U.S. SenatorJoni Ernst (R)202-224-3254 · contact formstatewide
State Senator (State Senate District 31)Bill Dotzler (Democratic)86%
State Senator (State Senate District 38)Dave Sires (R)14%
State Senator (State Senate District 34)Dan Zumbach (R)0.2%
State Senator (State Senate District 27)Annette Sweeney (R)<0.1%
State Representative (State House District 61)Timi Brown-Powers (Democratic)44%
State Representative (State House District 62)Jerome Amos (Democratic)42%
State Representative (State House District 76)Derek Wulf (R)14%
State Representative (State House District 68)Chad Ingels (R)0.2%
State Representative (State House District 54)Josh Meggers (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
State Senate District 3186%
State Senate District 3814%
State Senate District 340.2%
State Senate District 27<0.1%

State house districtShare of ZIP residents
State House District 6144%
State House District 6242%
State House District 7614%
State House District 680.2%
State House District 54<0.1%

Voting precincts

21 voting precincts overlap ZIP 50701. Map them, with each precinct's share of the ZIP's residents.

Get this in your AI agent

Your agent can get these cities, counties, districts and precincts with their shares, and their GeoJSON boundaries, from Boundary Atlas. Add https://atlas-production-d344.up.railway.app/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:

related_geographies(id="us:zcta:50701")

ZIP 50701 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.