Massachusetts / MA-07
Massachusetts District 7
Score
Irregularity score 94 Very irregularLess compact than 97% of other congressional districts.
14th least compact of 429 nationally, 1st of 9 in Massachusetts.
A score describes shape, not intent. Coastlines, rivers and the Voting Rights Act can all make a district irregular. How scores work
The three measures
- Polsby-Popper
- 0.10at least as compact as 8% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
- Reock
- 0.24at least as compact as 5% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
- Convex hull
- 0.53at least as compact as 4% of districts on this measure
Area compared with a rubber band stretched around the district, counting only land. Low for bites and tentacles.
Each measure runs from 0 to 1, where 1 is a perfect circle or a shape with no dents.
The state's edge
7% of this district's border is the state's edge: a coastline, a national border or a state line. Mapmakers don't choose those lines. A ragged one, like a coastline or a river, lowers Polsby-Popper. Reock and convex hull count only the state's own land, so water and neighboring states don't count against them. More on the state's edge
Who lives here
Most of this district's voting-age residents (57.9%) belong to minority groups. The largest are Black (21.7%), Hispanic or Latino (19.4%) and Asian (13.7%). The Voting Rights Act can require districts that keep a minority community together so it can elect candidates it prefers, and those districts can be irregular on purpose. A district like this isn't necessarily drawn for that reason, and the site doesn't know whether this one was. Figures are from the 2020 Census. How these are counted
Cities and towns
The largest places with people in this district, from the 2020 Census. A place split between districts shows how many of its residents live in this one.
- Boston city497,782 of its 675,647 residents
- Somerville city80,816 of its 81,045 residents
- Cambridge city64,904 of its 118,403 residents
- Everett cityall 49,075 residents
- Chelsea cityall 40,787 residents
- Randolph Town cityall 34,984 residents
- Milton community12,433 of its 28,630 residents
- Brookline community147 of its 63,191 residents
ZIP codes
41 ZIP codes have residents in this district. 24 of them are split with other districts. A percentage is the share of that ZIP code's 2020 residents who live here.
Show all 41 ZIP codes
- 02111 (65%)
- 02115
- 02116 (66%)
- 02118
- 02119
- 02120
- 02121
- 02122 (58%)
- 02124 (86%)
- 02125 (46%)
- 02126 (99%)
- 02128
- 02129
- 02130 (56%)
- 02131 (64%)
- 02132 (10%)
- 02134
- 02135 (99%)
- 02136
- 02138 (4%)
- 02139 (81%)
- 02140 (56%)
- 02141
- 02142
- 02143
- 02144 (99%)
- 02145 (99%)
- 02149
- 02150
- 02151 (1%)
- 02155 (3%)
- 02163
- 02186 (43%)
- 02199
- 02205
- 02210 (4%)
- 02215 (99%)
- 02368 (99%)
- 02445 (1%)
- 02446 (1%)
- 02467 (12%)
These are the Census Bureau's ZIP code areas, which match residential ZIP codes closely. ZIP codes used only for PO boxes or a single organization aren't included. How ZIP codes are matched
2024 presidential vote
Shares of the votes for the two of them; other candidates are left out. Massachusetts used the same lines in 2024, so this is added up from precinct results. A precinct split between districts is divided by its House votes, so the figures are close estimates. Where the votes come from
U.S. House
Statewide results from Massachusetts for the November 3, 2026 election aren't available yet.
Massachusetts's senators
- Edward J. Markey, DemocratSeat on the November 3, 2026 ballot: results aren't available yet.
- Elizabeth Warren, Democrat
Senators are elected by the whole state, so district lines don't change who they are. Senators serving as of November 6, 2026. Senators elected in November 2026 take office January 3, 2027. Where this comes from
Where it sits in Massachusetts
- Very compact (0 to 19)
- Compact (20 to 39)
- Middle (40 to 59)
- Irregular (60 to 79)
- Very irregular (80 to 100)
The area outlined with dashes on the map, enlarged so its smaller districts can be seen.
Spot a problem with this district? Email us about MA-07.