Boundary Atlas

ZIP code 61301: LaSalle, IL

ZIP code 61301 is in LaSalle (92% of residents), in LaSalle County, Illinois. 8.5% of its residents live outside city limits. It is in Illinois's 14th congressional district. Its state senate districts are State Senate District 38 (93%) and State Senate District 37 (6.7%); its state house districts are State House District 76 (93%) and State House District 74 (6.7%).

10,375residents (2020 Census)
42.3 sq miland area
2cities and towns
1congressional district
13voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
LaSalle92%
Peru0.1%

CountyShare of ZIP residents
LaSalle County100%

Town or county subdivisionShare of ZIP residents
LaSalle township89%
Dimmick township5.9%
Utica township3.6%
Waltham township0.8%
Peru township0.5%

Congressional district

Congressional districtShare of ZIP residents
Illinois's 14th congressional district (IL-14)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 3893%
State Senate District 376.7%

State house districtShare of ZIP residents
State House District 7693%
State House District 746.7%

Voting precincts

13 voting precincts overlap ZIP 61301. 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:61301")

ZIP 61301 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.