ZIP code 03751: Sunapee, NH
ZIP code 03751 is in Sullivan County, New Hampshire, outside any city or Census-designated place. It is in New Hampshire's 2nd congressional district. Its state senate districts are State Senate District 8 (81%) and State Senate District 5 (19%); its state house district is State House District Sullivan 05.
See it on the mapAll of New Hampshire
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Sullivan County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Sunapee town | 81% |
| Springfield town | 19% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| New Hampshire's 2nd congressional district (NH-02) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 8 | 81% |
| State Senate District 5 | 19% |
| State house district | Share of ZIP residents |
|---|---|
| State House District Sullivan 05 | 100% |
Voting precincts
2 voting precincts overlap ZIP 03751. 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:03751")
ZIP 03751 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.