Massachusetts's 1st congressional district (MA-01)
Massachusetts's 1st congressional district (MA-01) covers parts or all of Berkshire County, Hampden County, Hampshire County, Worcester County and Franklin County, and 105 ZIP codes (95 wholly inside it). Its 2020 population was 781,103. This is the map in force for the November 3, 2026 election.
Who represents MA-01
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (MA-01) | Richard E. Neal (D) | 202-225-5601 |
| U.S. Senator | Edward J. Markey (D) | 202-224-2742 · contact form |
| U.S. Senator | Elizabeth Warren (D) | 202-224-4543 · contact form |
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in MA-01 |
|---|---|
| Berkshire County | 100% |
| Hampden County | 100% |
| Hampshire County | 48% |
| Worcester County | 12% |
| Franklin County | 2.9% |
ZIP codes
Percentages mark ZIPs only partly in MA-01: the share of that ZIP's residents inside it.
- 01001
- 01007 (100%)
- 01008
- 01009
- 01010
- 01011
- 01013
- 01020
- 01022
- 01026 (100%)
- 01027 (91%)
- 01028
- 01029
- 01030
- 01033
- 01034
- 01036
- 01040
- 01050
- 01056
- 01057
- 01069
- 01070
- 01071
- 01073
- 01075
- 01077
- 01079
- 01080
- 01081
- 01082 (95%)
- 01083
- 01085
- 01089
- 01092
- 01095
- 01097
- 01098
- 01103
- 01104
- 01105
- 01106
- 01107
- 01108
- 01109
- 01118
- 01119
- 01128
- 01129
- 01144
- 01151
- 01201
- 01220
- 01222
- 01223
- 01224
- 01225
- 01226
- 01229
- 01230
- 01235
- 01236
- 01237
- 01238
- 01240
- 01242
- 01243
- 01244
- 01245
- 01247
- 01253
- 01254
- 01255
- 01256
- 01257
- 01258
- 01259
- 01260
- 01262
- 01264
- 01266
- 01267
- 01270
- 01339 (77%)
- 01343
- 01350
- 01367 (91%)
- 01370 (9.2%)
- 01506
- 01507
- 01515
- 01518
- 01521
- 01531
- 01535
- 01537
- 01540
- 01542 (7.0%)
- 01550
- 01562
- 01566
- 01570 (48%)
- 01571
- 01585
- 01590 (0.1%)
Towns
Adams town, Agawam Town city, Alford town, Becket town, Belchertown town, Blandford town, Brimfield town, Brookfield town, Charlemont town, Charlton town, Cheshire town, Chester town, Chicopee city, Clarksburg town, Cummington town, Dalton town, Dudley town, East Brookfield town, East Longmeadow town, Easthampton city, Egremont town, Florida town, Granby town, Granville town, Great Barrington town, Hampden town, Hancock town, Hawley town, Hinsdale town, Holland town, Holyoke city, Huntington town, Lanesborough town, Lee town, Lenox town, Longmeadow town, Ludlow town, Middlefield town, Monroe town and Monson town and others.
Get this in your AI agent
Your agent can draw every precinct in MA-01, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:2501", children_level="precinct", include_districts=True)