Boundary Atlas

ZIP code 01201: Pittsfield, MA

ZIP code 01201 is in Pittsfield (97% of residents), in Berkshire County, Massachusetts. It is in Massachusetts's 1st congressional district. Its state senate district is Berkshire-Hampden-Franklin-Hampshire District; its state house districts are 2nd Berkshire District (97%), 1st Berkshire District (2.4%) and 3rd Berkshire District (1.0%).

45,494residents (2020 Census)
60.4 sq miland area
1cities and towns
1congressional district
17voting precincts

See it on the mapAll of Massachusetts

City and county

City or townShare of ZIP residents
Pittsfield97%

CountyShare of ZIP residents
Berkshire County100%

Town or county subdivisionShare of ZIP residents
Pittsfield city97%
Lanesborough town2.0%
Richmond town1.0%
Hancock town0.4%

Congressional district

Congressional districtShare of ZIP residents
Massachusetts's 1st congressional district (MA-01)100%

State legislative districts

State senate districtShare of ZIP residents
Berkshire-Hampden-Franklin-Hampshire District100%

State house districtShare of ZIP residents
2nd Berkshire District97%
1st Berkshire District2.4%
3rd Berkshire District1.0%

Voting precincts

17 voting precincts overlap ZIP 01201. 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:01201")

ZIP 01201 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.