Boundary Atlas

ZIP code 52218: Coggon, IA

ZIP code 52218 is in Coggon (41% of residents), in Linn County (84%), Buchanan County (8.9%) and Delaware County (7.4%), Iowa. 59% of its residents live outside city limits. It is in Iowa's 2nd congressional district. Its state senate districts are State Senate District 42 (84%) and State Senate District 34 (16%); its state house districts are State House District 83 (63%), State House District 84 (21%) and State House District 67 (16%).

1,726residents (2020 Census)
75.6 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
Coggon41%

CountyShare of ZIP residents
Linn County84%
Buchanan County8.9%
Delaware County7.4%

Town or county subdivisionShare of ZIP residents
Jackson township58%
Spring Grove township21%
Newton township8.9%
Boulder township5.5%
Adams township4.8%
Hazel Green township2.7%

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 4284%
State Senate District 3416%

State house districtShare of ZIP residents
State House District 8363%
State House District 8421%
State House District 6716%

Voting precincts

5 voting precincts overlap ZIP 52218. Map them, with each precinct's share of the ZIP's residents.

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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:52218")

ZIP 52218 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.