ZIP code 01821: Pinehurst, MA
ZIP code 01821 is in Pinehurst (24% of residents), in Middlesex County, Massachusetts. 76% of its residents live outside city limits. It is in Massachusetts's 6th congressional district (59%) and Massachusetts's 3rd congressional district (41%). Its state senate district is Fourth Middlesex District; its state house district is 22nd Middlesex District.
See it on the mapAll of Massachusetts
City and county
| City or town | Share of ZIP residents |
|---|---|
| Pinehurst | 24% |
| County | Share of ZIP residents |
|---|---|
| Middlesex County | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Billerica town | 100% |
Congressional districts
| Congressional district | Share of ZIP residents |
|---|---|
| Massachusetts's 6th congressional district (MA-06) | 59% |
| Massachusetts's 3rd congressional district (MA-03) | 41% |
This ZIP is split between districts. A mailing address in it could be in either; the map or locate_point gives the district for an exact address.
Elected officials
| Office | Member | Contact | Share of residents |
|---|---|---|---|
| U.S. Representative (MA-06) | Seth Moulton (D) | 202-225-8020 | 59% |
| U.S. Representative (MA-03) | Lori Trahan (D) | 202-225-3411 | 41% |
| 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 (Fourth Middlesex District) | Cindy Friedman (Democratic) | 100% | |
| State Representative (22nd Middlesex District) | Marc Lombardo (R) | 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
- Pinehurst laws: search for the Pinehurst, Massachusetts code of ordinances
- Middlesex County laws: search for the Middlesex County, Massachusetts code of ordinances
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| Fourth Middlesex District | 100% |
| State house district | Share of ZIP residents |
|---|---|
| 22nd Middlesex District | 100% |
Voting precincts
10 voting precincts overlap ZIP 01821. 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:01821")
ZIP 01821 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.