Boundary Atlas

ZIP code 61348: Oglesby, IL

ZIP code 61348 is in Oglesby (81% of residents), in LaSalle County, Illinois. 19% of its residents live outside city limits. It is in Illinois's 14th congressional district (95%) and Illinois's 16th congressional district (4.7%). Its state senate district is State Senate District 38; its state house district is State House District 76.

4,576residents (2020 Census)
39.3 sq miland area
2cities and towns
2congressional districts
10voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Oglesby81%
LaSalle0.7%

CountyShare of ZIP residents
LaSalle County100%

Town or county subdivisionShare of ZIP residents
LaSalle township89%
Deer Park township6.8%
Eden township3.7%
Peru township0.1%
Vermillion townshipland only

Congressional districts

Congressional districtShare of ZIP residents
Illinois's 14th congressional district (IL-14)95%
Illinois's 16th congressional district (IL-16)4.7%

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 38100%

State house districtShare of ZIP residents
State House District 76100%

Voting precincts

10 voting precincts overlap ZIP 61348. 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:61348")

ZIP 61348 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.