Where Is 631 Area Code?
Cities in 631 Area Code
- Brentwood
- Coram
- Commack
- Central Islip
- Huntington Station
- Centereach
- West Islip
- Shirley
- Holbrook
- Dix Hills
- Bay Shore
- Medford
- East Patchogue
- Hauppauge
- East Northport
- Lake Ronkonkoma
- Selden
- Holtsville
- Ronkonkoma
- North Bay Shore
- North Amityville
- Kings Park
- Sayville
- Melville
- Farmingville
- Mastic
- Setauket-East Setauket
- East Islip
- Manorville
- Rocky Point
- Greenlawn
- Stony Brook
- Hampton Bays
- Nesconset
- St. James
- Ridge
- Mastic Beach
- Miller Place
- Mount Sinai
- Terryville
Counties in 631 Area Code
Prefix Codes for Area Code 631
- (631) 200
- (631) 204
- (631) 205
- (631) 206
- (631) 207
- (631) 208
- (631) 209
- (631) 210
- (631) 213
- (631) 216
- (631) 217
- (631) 218
- (631) 219
- (631) 220
- (631) 221
- (631) 223
- (631) 224
- (631) 225
- (631) 226
- (631) 227
- (631) 228
- (631) 229
- (631) 230
- (631) 231
- (631) 232
- (631) 233
- (631) 234
- (631) 235
- (631) 236
- (631) 237
- (631) 238
- (631) 239
- (631) 240
- (631) 241
- (631) 242
- (631) 243
- (631) 244
- (631) 245
- (631) 246
- (631) 247
New York Area Codes