Riverside - 203 dialing code
Dialing code +1 (203) cities
- Riverside
- Bridgeport
- Bethel
- Georgetown
- Milford
- Stratford
- Norwalk
- Orange
- Derby
- Ansonia
- Bethlehem Village
- Branford Center
- Byram
- Cannondale
- Cheshire Village
- Cos Cob
- Danbury
- Darien
- East Haven
- Glenville
- Greenwich
- Guilford Center
- Heritage Village
- Madison Center
- Meriden
- Naugatuck
- New Haven
- Newtown
- North Haven
- Old Greenwich
- Pemberwick
- Ridgefield
- Shelton
- Southport
- Stamford
- Trumbull
- Wallingford Center
- Waterbury
- West Haven
- Westport
- Wilton Center
- Woodbury Center
- Woodmont