Find the last 4 digits (ZIP+4) for an address in 06401

ZIP 06401, Ansonia, CT is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 06401 – Ansonia, CT

Ansonia, Connecticut · Naugatuck Valley Planning Region · Eastern time

ZIP code06401
CityAnsonia
StateConnecticut
CountyNaugatuck Valley Planning Region
Population19,315
Time zoneEastern · local time
ZIP typeStandard (has a Census ZCTA area)
Land area6.03 sq mi
Center (lat, long)41.3442, -73.0698

Area codes in this area

203475

These are the area codes that most often serve ZIP 06401 (including overlays). The exact area code depends on the phone number — landlines, mobiles and overlays can differ even on the same street.

Map

Nearby ZIP codes

06418 Derby · 1.4 mi06483 Seymour · 2.9 mi06525 New Haven · 3.7 mi06484 Shelton · 4.5 mi06477 Orange · 4.7 mi06515 New Haven · 5.2 mi06524 Bethany · 6.7 mi06491 Stevenson · 6.7 mi

About ZIP 06401

ZIP code 06401 is assigned to Ansonia, Connecticut. It lies in Naugatuck Valley Planning Region. Its Census area covers about 6.03 square miles of land. The closest neighboring ZIP is 06418 (Derby), about 1.4 miles away.

Every address in 06401 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources