Boundary Atlas

ZIP code 61356: Princeton, IL

ZIP code 61356 is in Princeton (72% of residents) and De Pue (1.6%), in Bureau County, Illinois. 27% of its residents live outside city limits. It is in Illinois's 16th congressional district (92%) and Illinois's 14th congressional district (8.0%). Its state senate districts are State Senate District 37 (98%), State Senate District 38 (1.5%) and State Senate District 53 (0.6%); its state house districts are State House District 73 (98%), State House District 76 (1.5%) and State House District 105 (0.6%).

10,915residents (2020 Census)
189.6 sq miland area
4cities and towns
2congressional districts
20voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Princeton72%
De Pue1.6%
Hollowayville0.3%
Dover0.1%

CountyShare of ZIP residents
Bureau County100%

Town or county subdivisionShare of ZIP residents
Princeton township84%
Selby township6.1%
Dover township3.1%
Bureau township1.9%
Arispie township1.5%
Berlin township1.4%
Wyanet township1.1%
Leepertown township0.4%
La Moille township0.1%

Congressional districts

Congressional districtShare of ZIP residents
Illinois's 16th congressional district (IL-16)92%
Illinois's 14th congressional district (IL-14)8.0%

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.

State legislative districts

State senate districtShare of ZIP residents
State Senate District 3798%
State Senate District 381.5%
State Senate District 530.6%

State house districtShare of ZIP residents
State House District 7398%
State House District 761.5%
State House District 1050.6%

Voting precincts

20 voting precincts overlap ZIP 61356. 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:61356")

ZIP 61356 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.