Boundary Atlas

ZIP code 03561: Littleton, NH

ZIP code 03561 is in Littleton (74% of residents), in Grafton County, New Hampshire. 26% of its residents live outside city limits. It is in New Hampshire's 2nd congressional district. Its state senate district is State Senate District 1; its state house district is State House District Grafton 01.

6,005residents (2020 Census)
50.0 sq miland area
1cities and towns
1congressional district
1voting precincts

See it on the mapAll of New Hampshire

City and county

City or townShare of ZIP residents
Littleton74%

CountyShare of ZIP residents
Grafton County100%

Town or county subdivisionShare of ZIP residents
Littleton town100%

Congressional district

Congressional districtShare of ZIP residents
New Hampshire's 2nd congressional district (NH-02)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 1100%

State house districtShare of ZIP residents
State House District Grafton 01100%

Voting precincts

1 voting precinct overlap ZIP 03561. 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:03561")

ZIP 03561 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.