Boundary Atlas

ZIP code 50837: Bridgewater, IA

ZIP code 50837 is in Bridgewater (49% of residents), in Adair County (86%), Cass County (8.2%) and Adams County (5.9%), Iowa. 51% of its residents live outside city limits. It is in Iowa's 3rd congressional district. Its state senate districts are State Senate District 12 (86%) and State Senate District 9 (14%); its state house districts are State House District 23 (86%), State House District 18 (8.2%) and State House District 17 (5.9%).

304residents (2020 Census)
52.5 sq miland area
1cities and towns
1congressional district
5voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Bridgewater49%

CountyShare of ZIP residents
Adair County86%
Cass County8.2%
Adams County5.9%

Town or county subdivisionShare of ZIP residents
Jackson township69%
Washington township14%
Victoria township6.6%
Washington township5.9%
Eureka township2.6%
Massena township1.6%
Carl townshipland only

Congressional district

Congressional districtShare of ZIP residents
Iowa's 3rd congressional district (IA-03)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1286%
State Senate District 914%

State house districtShare of ZIP residents
State House District 2386%
State House District 188.2%
State House District 175.9%

Voting precincts

5 voting precincts overlap ZIP 50837. 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:50837")

ZIP 50837 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.