Connecticut number prefixes
- Ansonia
- Bethel
- Bethlehem Village
- Branford Center
- Bridgeport
- Byram
- Cannondale
- Cheshire Village
- Cos Cob
- Danbury
- Darien
- Derby
- East Haven
- Georgetown
- Glenville
- Greenwich
- Guilford Center
- Heritage Village
- Madison Center
- Meriden
- Milford
- Naugatuck
- New Haven
- Newtown
- North Haven
- Norwalk
- Old Greenwich
- Orange
- Pemberwick
- Ridgefield
- Riverside
- Shelton
- Southport
- Stamford
- Stratford
- Trumbull
- Wallingford Center
- Waterbury
- West Haven
- Westport
- Wilton Center
- Woodbury Center
- Woodmont
- Baltic
- Bantam
- Blue Hills
- Bristol
- Broad Brook
- Brooklyn
- Canaan
- Canton Valley
- Chester Center
- Clinton
- Colchester
- Collinsville
- Conning Towers Nautilus Park
- Coventry Lake
- Crystal Lake
- Danielson
- Deep River Center
- Durham
- East Brooklyn
- East Hampton
- East Hartford
- Essex Village
- Falls Village
- Fenwick
- Gales Ferry
- Glastonbury Center
- Groton
- Groton Long Point
- Hartford
- Hazardville
- Higganum
- Jewett City
- Kensington
- Lake Pocotopaug
- Lakeville
- Litchfield
- Long Hill
- Manchester
- Mansfield Center
- Mashantucket
- Middletown
- Moodus
- Moosup
- Mystic
- New Britain
- New Hartford Center
- Newington
- New London
- New Milford
- New Preston
- Niantic
- Noank
- Norfolk
- North Granby
- North Grosvenor Dale
- Northwest Harwinton
- Norwich
- Oakville
- Old Mystic
- Old Saybrook Center
- Oxoboxo River
- Pawcatuck
- Plainfield Village
- Poquonock Bridge
- Portland
- Putnam
- Quinebaug
- Rockville
- Salmon Brook
- Saybrook Manor
- Sharon
- Sherwood Manor
- Simsbury Center
- Somers
- South Coventry
- South Windham
- Southwood Acres
- South Woodstock
- Stafford Springs
- Stonington
- Storrs
- Suffield Depot
- Tariffville
- Terramuggus
- Terryville
- Thomaston
- Thompsonville
- Torrington
- Waterford
- Watertown
- Wauregan
- Weatogue
- Westbrook Center
- West Hartford
- West Simsbury
- Wethersfield
- Willimantic
- Windsor Locks
- Winsted