Main city: Ansonia
Timezone: Eastern
Phone type: Landline
Operator: Southern New England Telephone Co.

Ansonia, a city in New Haven County, Connecticut, United States, on the Naugatuck River, immediately north of Derby, and about 12 miles (19 km) northwest of New Haven. The population was 19,249 at the 2010 census. The ZIP code for Ansonia is 06401. The city is served by the Metro-North Railroad. Ansonia Station is a stop on the railroad passenger commuter service's Waterbury line, connecting to New York's Grand Central Terminal. Ansonia also is served by the Connecticut Transit bus carrier. Connecticut Route 8 serves Ansonia. ^source

Area code 203 is a North American telephone area code that covers the southwestern part of Connecticut, and is overlaid with area code 475. The area codes stretch from Connecticut's western border, along its southern coast, to Madison, and north to Meriden. (The rest of Connecticut is served by the 860 area code, which is expected to be overlain with 959 on August 30, 2014.) The region encompassed by 203 and 475 roughly corresponds to the Connecticut side of the New York metropolitan area. Prior to August 28, 1995 (when the split with 860 took effect), area code 203 encompassed all of Connecticut. ^source