ZIP code 06243: Killingly, CT
ZIP code 06243 is in Northeastern Connecticut Planning Region, Connecticut, outside any city or Census-designated place. It is in Connecticut's 2nd congressional district. Its state senate district is State Senate District 29; its state house district is State House District 51.
See it on the mapAll of Connecticut
City and county
Outside any city or Census-designated place.
| County | Share of ZIP residents |
|---|---|
| Northeastern Connecticut Planning Region | 100% |
| Town or county subdivision | Share of ZIP residents |
|---|---|
| Killingly town | 100% |
Congressional district
| Congressional district | Share of ZIP residents |
|---|---|
| Connecticut's 2nd congressional district (CT-02) | 100% |
State legislative districts
| State senate district | Share of ZIP residents |
|---|---|
| State Senate District 29 | 100% |
| State house district | Share of ZIP residents |
|---|---|
| State House District 51 | 100% |
Voting precincts
2 voting precincts overlap ZIP 06243. 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:06243")
ZIP 06243 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.