Boundary Atlas

ZIP code 60102: Algonquin, IL

ZIP code 60102 is in Algonquin (93% of residents), in McHenry County (73%) and Kane County (27%), Illinois. 7.1% of its residents live outside city limits. It is in Illinois's 9th congressional district (61%), Illinois's 8th congressional district (27%) and Illinois's 11th congressional district (12%). Its state senate districts are State Senate District 26 (46%), State Senate District 33 (41%), State Senate District 35 (12%) and State Senate District 32 (<0.1%); its state house districts are State House District 52 (46%), State House District 66 (41%), State House District 70 (12%) and State House District 63 (<0.1%).

31,959residents (2020 Census)
15.8 sq miland area
3cities and towns
3congressional districts
29voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Algonquin93%
Barrington Hills0.3%
Lake in the Hills<0.1%

CountyShare of ZIP residents
McHenry County73%
Kane County27%

Town or county subdivisionShare of ZIP residents
Algonquin township61%
Dundee township27%
Grafton township12%

Congressional districts

Congressional districtShare of ZIP residents
Illinois's 9th congressional district (IL-09)61%
Illinois's 8th congressional district (IL-08)27%
Illinois's 11th congressional district (IL-11)12%

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 2646%
State Senate District 3341%
State Senate District 3512%
State Senate District 32<0.1%

State house districtShare of ZIP residents
State House District 5246%
State House District 6641%
State House District 7012%
State House District 63<0.1%

Voting precincts

29 voting precincts overlap ZIP 60102. 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:60102")

ZIP 60102 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.