Connecticut District 3

49 Middle of the pack

Less compact than 51% of other congressional districts.

211th least compact of 429 nationally, 2nd of 5 in Connecticut.

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: 0.24at least as compact as 46% of districts on this measure
Area compared with perimeter. Low for jagged or snaking edges.
Reock: 0.48at least as compact as 49% of districts on this measure
Area compared with the smallest circle around the district, counting only land. Low for stretched shapes.
Convex hull: 0.80at least as compact as 58% 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

33% 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.

New Haven cityall 134,023 residents
West Haven cityall 55,584 residents
Milford cityall 50,558 residents
Naugatuck boroughall 31,519 residents
East Haven communityall 27,923 residents
Shelton city27,898 of its 40,869 residents
North Haven communityall 24,253 residents
Middletown city22,952 of its 47,717 residents
Waterbury city19,882 of its 114,403 residents
Ansonia cityall 18,918 residents

And 13 smaller places. 32% of this district's people live outside any city, town or named community. How places are counted

ZIP codes

41 ZIP codes have residents in this district. 10 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

06401
06403
06405
06410 (1%)
06418
06422
06437
06443 (1%)
06455
06457 (47%)
06459 (98%)
06460
06461
06471
06472
06473
06477
06481
06483
06484 (68%)
06492 (99%)
06510
06511
06512
06513
06514
06515
06516
06517
06518
06519
06524
06525
06610 (1%)
06614
06615
06705 (1%)
06706 (74%)
06708 (29%)
06712
06770

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

Kamala Harris 57.2%, Donald Trump 42.8%

Shares of the votes for the two of them; other candidates are left out. Connecticut 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

Rosa L. DeLauro, Democrat

Elected November 3, 2026, takes office January 3, 2027.

Unofficial results from the Connecticut Secretary of the State (CT Election Management System), checked November 6, 2026. A race shows a winner once news decision desks have called it. Results become official when the state certifies them. Where this comes from

Connecticut's senators

Richard Blumenthal, Democrat
Christopher Murphy, 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 Connecticut

Very compact (0 to 19)
Compact (20 to 39)
Middle (40 to 59)
Irregular (60 to 79)
Very irregular (80 to 100)

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