ZIP code 03218: Barnstead, NH
ZIP code 03218 is in Belknap County, New Hampshire, outside any city or Census-designated place. It is in New Hampshire's 1st congressional district. Its state senate district is State Senate District 17; its state house district is State House District Belknap 07.
See it on the mapAll of New Hampshire
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Belknap County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Barnstead town | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| New Hampshire's 1st congressional district (NH-01) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 17 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District Belknap 07 | 100% |
Voting precincts
1 voting precinct overlap ZIP 03218. 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:03218")
ZIP 03218 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.