Boundary Atlas

ZIP code 52040: Dyersville, IA

ZIP code 52040 is in Dyersville (76% of residents), in Dubuque County (84%) and Delaware County (16%), Iowa. 24% of its residents live outside city limits. It is in Iowa's 2nd congressional district. Its state senate districts are State Senate District 33 (84%) and State Senate District 34 (16%); its state house districts are State House District 65 (84%) and State House District 67 (16%).

5,911residents (2020 Census)
62.0 sq miland area
1cities and towns
1congressional district
6voting precincts

See it on the mapAll of Iowa

City and county

City or townShare of ZIP residents
Dyersville76%

CountyShare of ZIP residents
Dubuque County84%
Delaware County16%

Town or county subdivisionShare of ZIP residents
New Wine township73%
Bremen township15%
Dodge township11%
Colony township1.3%
North Fork township<0.1%

Congressional district

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

State legislative districts

State senate districtShare of ZIP residents
State Senate District 3384%
State Senate District 3416%

State house districtShare of ZIP residents
State House District 6584%
State House District 6716%

Voting precincts

6 voting precincts overlap ZIP 52040. 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:52040")

ZIP 52040 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.