ZIP code 06403: Beacon Falls, CT
ZIP code 06403 is in Naugatuck Valley Planning Region, Connecticut, outside any city or Census-designated place. It is in Connecticut's 3rd congressional district. Its state senate district is State Senate District 17; its state house district is State House District 105.
See it on the mapAll of Connecticut
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Naugatuck Valley Planning Region | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Beacon Falls town | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Connecticut's 3rd congressional district (CT-03) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 17 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 105 | 100% |
Voting precincts
1 voting precinct overlap ZIP 06403. 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:06403")
ZIP 06403 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.