Connecticut's 4th congressional district (CT-04)
Connecticut's 4th congressional district (CT-04) covers parts or all of Greater Bridgeport Planning Region, Western Connecticut Planning Region and Naugatuck Valley Planning Region, and 38 ZIP codes (36 wholly inside it). Its 2020 population was 721,189. This is the map in force for the November 3, 2026 election.
Who represents CT-04
| Office | Member | Contact |
|---|---|---|
| U.S. Representative (CT-04) | James A. Himes (D) | 202-225-5541 |
| U.S. Senator | Christopher Murphy (D) | 202-224-4041 · contact form |
| U.S. Senator | Richard Blumenthal (D) | 202-224-2823 · contact form |
Officials serving now (members of Congress until January 3, 2027). Sources: Members of Congress: the @unitedstates project, congress-legislators (CC0).
Counties
| County | Share of the county's residents in CT-04 |
|---|---|
| Greater Bridgeport Planning Region | 84% |
| Western Connecticut Planning Region | 68% |
| Naugatuck Valley Planning Region | 5.7% |
ZIP codes
Percentages mark ZIPs only partly in CT-04: the share of that ZIP's residents inside it.
- 06468
- 06478
- 06484 (32%)
- 06488 (<0.1%)
- 06604
- 06605
- 06606
- 06607
- 06608
- 06610
- 06611
- 06612
- 06807
- 06820
- 06824
- 06825
- 06830
- 06831
- 06840
- 06850
- 06851
- 06853
- 06854
- 06855
- 06870
- 06877
- 06878
- 06880
- 06883
- 06890
- 06896
- 06897
- 06901
- 06902
- 06903
- 06905
- 06906
- 06907
Towns
Bridgeport town, Darien town, Easton town, Fairfield town, Greenwich town, Monroe town, New Canaan town, Norwalk town, Oxford town, Redding town, Ridgefield town, Stamford town, Trumbull town, Weston town, Westport town, Wilton town and Shelton town.
Get this in your AI agent
Your agent can draw every precinct in CT-04, or list them with population shares (related_geographies). Add https://boundarymcp.com/mcp to Claude, ChatGPT, Cursor or Codex (free, no key; how), then:
get_boundaries(id="us:congressional_district:0904", children_level="precinct", include_districts=True)