Massachusetts District 1

37 Compact

Less compact than 34% of other congressional districts.

284th least compact of 429 nationally, 8th 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: 0.29at least as compact as 63% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
Reock: 0.59at least as compact as 79% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
Convex hull: 0.77at least as compact as 47% 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

51% 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

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.

Springfield cityall 155,929 residents
Chicopee cityall 55,560 residents
Pittsfield cityall 43,927 residents
Westfield cityall 40,834 residents
Holyoke cityall 38,238 residents
West Springfield Town cityall 28,835 residents
Agawam Town cityall 28,692 residents
Southbridge Town cityall 17,740 residents
Easthampton Town cityall 16,211 residents
Longmeadow communityall 15,853 residents

And 31 smaller places. 31% of this district's people live outside any city, town or named community. How places are counted

2024 presidential vote

Kamala Harris 57.0%, Donald Trump 43.0%

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.

Where this comes from

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)