Marshfield, Massachusetts
Marshfield is a Census-designated place (an unincorporated community) in Plymouth County, Massachusetts, with 4,653 residents in 2020. It is in Massachusetts's 9th congressional district. It spans 2 state house districts. Its state senate district is First Plymouth and Norfolk District.
County
| County | Share of residents |
|---|---|
| Plymouth County | 100% |
Congressional district
| Congressional district | Share of residents |
|---|---|
| Massachusetts's 9th congressional district (MA-09) | 100% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MA-09) | William R. Keating (D) | 202-225-3111 | 100% |
| U.S. Senator | Edward J. Markey (D) | 202-224-2742 · contact form | statewide |
| U.S. Senator | Elizabeth Warren (D) | 202-224-4543 · contact form | statewide |
| State Senator (First Plymouth and Norfolk District) | Patrick O'Connor (R) | 100% | |
| State Representative (4th Plymouth District) | Patrick Kearney (Democratic) | 88% | |
| State Representative (6th Plymouth District) | Ken Sweezey (R) | 12% |
Officials serving now (members of Congress until January 3, 2027). Sources: State legislators: Open States (public domain); Members of Congress: the @unitedstates project, congress-legislators (CC0).
Local government
- Marshfield laws: search for the Marshfield, Massachusetts code of ordinances
- Plymouth County laws: search for the Plymouth County, Massachusetts code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| First Plymouth and Norfolk District | 100% |
| State house district | Share of residents |
|---|---|
| 4th Plymouth District | 88% |
| 6th Plymouth District | 12% |
ZIP codes
Percentages mark ZIPs only partly in Marshfield: the share of that ZIP's residents living in it.
- 02050 (18%)
Get this in your AI agent
Your agent can get Marshfield's counties and districts with shares, its ZIP codes (level='zcta'), and its boundary as GeoJSON (get_boundaries). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
related_geographies(id="us:place:2538820")
Marshfield here is the Census Bureau's place boundary as of January 1, 2025 (a Census-designated place, which has no municipal government). Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.