Cambridge, Massachusetts
Cambridge is a city in Middlesex County, Massachusetts, with 118,403 residents in 2020. It spans 2 congressional districts: MA-07 (55%) and MA-05 (45%). It spans 3 state senate and 6 state house districts.
County
| County | Share of residents |
|---|---|
| Middlesex County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Massachusetts's 7th congressional district (MA-07) | 55% |
| Massachusetts's 5th congressional district (MA-05) | 45% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MA-07) | Ayanna Pressley (D) | 202-225-5111 | 55% |
| U.S. Representative (MA-05) | Katherine M. Clark (D) | 202-225-2836 | 45% |
| 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 (Middlesex and Suffolk District) | Sal DiDomenico (Democratic) | 63% | |
| State Senator (Second Middlesex District) | Pat Jehlen (Democratic) | 24% | |
| State Senator (Suffolk and Middlesex District) | Will Brownsberger (Democratic) | 12% | |
| State Representative (25th Middlesex District) | Marjorie Decker (Democratic) | 36% | |
| State Representative (26th Middlesex District) | Mike Connolly (Democratic) | 29% | |
| State Representative (29th Middlesex District) | Steve Owens (Democratic) | 19% | |
| State Representative (2nd Suffolk District) | Danny Ryan (Democratic) | 8.1% | |
| State Representative (24th Middlesex District) | Dave Rogers (Democratic) | 4.2% | |
| State Representative (18th Suffolk District) | Mike Moran (Democratic) | 3.4% |
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
- Cambridge website: https://www.cambridgema.gov/
- Cambridge council: Cambridge City Council
- Cambridge laws: search for the Cambridge, Massachusetts code of ordinances
- Middlesex County laws: search for the Middlesex County, Massachusetts code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| Middlesex and Suffolk District | 63% |
| Second Middlesex District | 24% |
| Suffolk and Middlesex District | 12% |
| State house district | Share of residents |
|---|---|
| 25th Middlesex District | 36% |
| 26th Middlesex District | 29% |
| 29th Middlesex District | 19% |
| 2nd Suffolk District | 8.1% |
| 24th Middlesex District | 4.2% |
| 18th Suffolk District | 3.4% |
ZIP codes
Percentages mark ZIPs only partly in Cambridge: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Cambridge'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:2511000")
Cambridge here is the Census Bureau's place boundary as of January 1, 2025. Shares are of 2020 Census population. Districts are the maps in force for the November 3, 2026 election.