Boundary Atlas

ZIP code 50320: Des Moines, IA

ZIP code 50320 is in Des Moines (93% of residents), in Polk County (92%) and Warren County (7.6%), Iowa. 7.0% of its residents live outside city limits. It is in Iowa's 3rd congressional district (92%) and Iowa's 1st congressional district (7.6%). Its state senate districts are State Senate District 15 (92%) and State Senate District 11 (7.6%); its state house districts are State House District 29 (88%), State House District 22 (7.6%) and State House District 30 (4.2%).

23,369residents (2020 Census)
16.8 sq miland area
1cities and towns
2congressional districts
10voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Des Moines93%

CountyShare of ZIP residents
Polk County92%
Warren County7.6%

Town or county subdivisionShare of ZIP residents
Lee township41%
Bloomfield township41%
Allen township10%
Greenfield township7.6%
Allen township<0.1%

Congressional districts

Congressional districtShare of ZIP residents
Iowa's 3rd congressional district (IA-03)92%
Iowa's 1st congressional district (IA-01)7.6%

This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.

Elected officials

OfficeMemberContactShare of residents
U.S. Representative (IA-03)Zachary Nunn (R)202-225-547692%
U.S. Representative (IA-01)Mariannette Miller-Meeks (R)202-225-65767.6%
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 15)Tony Bisignano (Democratic)92%
State Representative (State House District 29)Brian Meyer (Democratic)88%
State Representative (State House District 22)Samantha Fett (R)7.6%
State Representative (State House District 30)Megan Srinivas (Democratic)4.2%

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 1592%
State Senate District 117.6%

State house districtShare of ZIP residents
State House District 2988%
State House District 227.6%
State House District 304.2%

Voting precincts

10 voting precincts overlap ZIP 50320. 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:50320")

ZIP 50320 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.