ZIP code 01243: Middlefield, MA
ZIP code 01243 is in Hampshire County, Massachusetts, outside any city or Census-designated place. It is in Massachusetts's 1st congressional district. Its state senate district is Berkshire-Hampden-Franklin-Hampshire District; its state house district is 3rd Hampden District.
See it on the mapAll of Massachusetts
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Hampshire County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Middlefield town | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Massachusetts's 1st congressional district (MA-01) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Berkshire-Hampden-Franklin-Hampshire District | 100% |
| State house district | Share of ZIP residents |
|---|---|
| 3rd Hampden District | 100% |
Voting precincts
1 voting precinct overlap ZIP 01243. 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:01243")
ZIP 01243 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.