Boundary Atlas

ZIP code 62340: Griggsville, IL

ZIP code 62340 is in Griggsville (68% of residents), in Pike County, Illinois. 32% of its residents live outside city limits. It is in Illinois's 15th congressional district. Its state senate district is State Senate District 50; its state house district is State House District 100.

1,618residents (2020 Census)
90.6 sq miland area
3cities and towns
1congressional district
9voting precincts

See it on the mapAll of Illinois

City and county

City or townShare of ZIP residents
Griggsville68%
Valley City0.9%
Pittsfield0.4%

CountyShare of ZIP residents
Pike County100%

Town or county subdivisionShare of ZIP residents
Griggsville township81%
Newburg township6.1%
Flint township5.5%
Perry township3.6%
New Salem township2.5%
Fairmount township0.7%
Chambersburg township0.5%
Detroit townshipland only

Congressional district

Congressional districtShare of ZIP residents
Illinois's 15th congressional district (IL-15)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 50100%

State house districtShare of ZIP residents
State House District 100100%

Voting precincts

9 voting precincts overlap ZIP 62340. 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:62340")

ZIP 62340 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.