Wellesley, Massachusetts
Wellesley is a Census-designated place (an unincorporated community) in Norfolk County, Massachusetts, with 29,550 residents in 2020. It spans 2 congressional districts: MA-05 (75%) and MA-04 (25%). Its state senate district is Norfolk and Middlesex District; its state house district is 14th Norfolk District.
County
| County | Share of residents |
|---|---|
| Norfolk County | 100% |
Congressional districts
| Congressional district | Share of residents |
|---|---|
| Massachusetts's 5th congressional district (MA-05) | 75% |
| Massachusetts's 4th congressional district (MA-04) | 25% |
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MA-05) | Katherine M. Clark (D) | 202-225-2836 | 75% |
| U.S. Representative (MA-04) | Jake Auchincloss (D) | 202-225-5931 | 25% |
| 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 (Norfolk and Middlesex District) | Cynthia Creem (Democratic) | 100% | |
| State Representative (14th Norfolk District) | Alice Peisch (Democratic) | 100% |
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
- Wellesley laws: search for the Wellesley, Massachusetts code of ordinances
- Norfolk County website: https://www.norfolkcounty.org/
- Norfolk County laws: search for the Norfolk County, Massachusetts code of ordinances
State legislative districts
| State senate district | Share of residents |
|---|---|
| Norfolk and Middlesex District | 100% |
| State house district | Share of residents |
|---|---|
| 14th Norfolk District | 100% |
ZIP codes
Percentages mark ZIPs only partly in Wellesley: the share of that ZIP's residents living in it.
Get this in your AI agent
Your agent can get Wellesley'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:2574210")
Wellesley 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.