Boundary Atlas

ZIP code 06255: North Grosvenor Dale, CT

ZIP code 06255 is in North Grosvenor Dale (31% of residents), Quinebaug (12%) and Mechanicsville (7.9%), in Northeastern Connecticut Planning Region, Connecticut. 49% of its residents live outside city limits. It is in Connecticut's 2nd congressional district. Its state senate districts are State Senate District 29 (86%) and State Senate District 35 (14%); its state house district is State House District 51.

4,673residents (2020 Census)
23.1 sq miland area
3cities and towns
1congressional district
3voting precincts

See it on the mapAll of Connecticut

City and county

City or townShare of ZIP residents
North Grosvenor Dale31%
Quinebaug12%
Mechanicsville7.9%

CountyShare of ZIP residents
Northeastern Connecticut Planning Region100%

Town or county subdivisionShare of ZIP residents
Thompson town100%

Congressional district

Congressional districtShare of ZIP residents
Connecticut's 2nd congressional district (CT-02)100%

State legislative districts

State senate districtShare of ZIP residents
State Senate District 2986%
State Senate District 3514%

State house districtShare of ZIP residents
State House District 51100%

Voting precincts

3 voting precincts overlap ZIP 06255. Map them, with each precinct's share of the ZIP's residents.

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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:06255")

ZIP 06255 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.