Area Code 631 is located in the state of New York.
The New York`s major city is Huntington
The state of New York is in Eastern timezone.
More important cities in New York:
Bay Shore, NY; Brentwood, NY; Centereach, NY; Central Islip, NY; Commack, NY; Copiague, NY; Coram, NY; Deer Park, NY; Dix Hills, NY; East Northport, NY; East Patchogue, NY; Hauppauge, NY; Holbrook, NY; Huntington Station, NY; Islip, NY; Lindenhurst, NY; Medford, NY; Ronkonkoma, NY; Selden, NY; Shirley, NY; Smithtown, NY; West Babylon, NY; West Islip, NY;
Prefixes within the 631 Area Code what we have in our database.
| Prefix | Primary City | County | Usage |
| (631) 200 | Bayport, NY | Suffolk | Landline |
| (631) 204 | Southampton, NY | Suffolk | Landline |
| (631) 205 | Yaphank, NY | Suffolk | Landline |
| (631) 206 | Brightwaters, NY | Suffolk | Landline |
| (631) 207 | Patchogue, NY | Suffolk | Landline |
| (631) 208 | Riverhead, NY | Suffolk | Landline |
| (631) 209 | Shoreham, NY | Suffolk | Landline |
| (631) 210 | Islip, NY | Suffolk | Landline |
| (631) 213 | Huntington, NY | Suffolk | Landline |
| (631) 216 | East Setauket, NY | Suffolk | Landline |
| (631) 217 | Stony Brook, NY | Suffolk | Landline |
| (631) 218 | Sayville, NY | Suffolk | Landline |
| (631) 219 | Brentwood, NY | Suffolk | Cell Number |
| (631) 220 | Brentwood, NY | Suffolk | Cell Number |
| (631) 221 | Wantagh, NY | Nassau | Landline |
| (631) 223 | Huntington, NY | Suffolk | Landline |
| (631) 224 | Islip, NY | Suffolk | Landline |
| (631) 225 | Lindenhurst, NY | Suffolk | Landline |
| (631) 226 | Lindenhurst, NY | Suffolk | Landline |
| (631) 227 | Farmingdale, NY | Nassau | Landline |
| (631) 228 | Shoreham, NY | Suffolk | Landline |
| (631) 229 | Amityville, NY | Suffolk | Landline |
| (631) 231 | Brentwood, NY | Suffolk | Landline |
| (631) 232 | Central Islip, NY | Suffolk | Landline |
| (631) 233 | Brentwood, NY | Suffolk | Landline |
| (631) 234 | Central Islip, NY | Suffolk | Landline |
| (631) 235 | Brentwood, NY | Suffolk | Cell Number |
| (631) 236 | Brentwood, NY | Suffolk | Landline |
| (631) 237 | Water Mill, NY | Suffolk | Landline |
| (631) 238 | Montauk, NY | Suffolk | Landline |
| (631) 239 | Northport, NY | Suffolk | Landline |
| (631) 240 | Smithtown, NY | Suffolk | Landline |
| (631) 241 | Brentwood, NY | Suffolk | Cell Number |
| (631) 242 | Deer Park, NY | Suffolk | Landline |
| (631) 243 | Deer Park, NY | Suffolk | Landline |
| (631) 244 | Sayville, NY | Suffolk | Landline |
| (631) 245 | Brentwood, NY | Suffolk | Cell Number |
| (631) 246 | East Setauket, NY | Suffolk | Landline |
| (631) 247 | Farmingdale, NY | Nassau | Landline |
| (631) 249 | Farmingdale, NY | Nassau | Landline |
| (631) 251 | Sag Harbor, NY | Suffolk | Landline |
| (631) 252 | Brentwood, NY | Suffolk | Cell Number |
| (631) 253 | Deer Park, NY | Suffolk | Landline |
| (631) 254 | Deer Park, NY | Suffolk | Landline |
| (631) 255 | Riverhead, NY | Suffolk | Cell Number |
| (631) 256 | Sayville, NY | Suffolk | Landline |
| (631) 258 | Brentwood, NY | Suffolk | Cell Number |
| (631) 259 | Southampton, NY | Suffolk | Landline |
| (631) 261 | Northport, NY | Suffolk | Landline |
| (631) 262 | Northport, NY | Suffolk | Landline |
| (631) 263 | Smithtown, NY | Suffolk | Landline |
| (631) 264 | Amityville, NY | Suffolk | Landline |
| (631) 265 | Smithtown, NY | Suffolk | Landline |
| (631) 266 | Commack, NY | Suffolk | Landline |
| (631) 267 | East Hampton, NY | Suffolk | Landline |
| (631) 268 | Not filled | Suffolk | Cell Number |
| (631) 269 | Kings Park, NY | Suffolk | Landline |
| (631) 270 | Farmingdale, NY | Nassau | Landline |
| (631) 271 | Huntington, NY | Suffolk | Landline |
| (631) 272 | Central Islip, NY | Suffolk | Landline |
| (631) 273 | Brentwood, NY | Suffolk | Landline |
| (631) 274 | Deer Park, NY | Suffolk | Landline |
| (631) 275 | Brentwood, NY | Suffolk | Cell Number |
| (631) 276 | Hampton Bays, NY | Suffolk | Cell Number |
| (631) 277 | Islip, NY | Suffolk | Landline |
| (631) 278 | Brentwood, NY | Suffolk | Cell Number |
| (631) 279 | Brentwood, NY | Suffolk | Cell Number |
| (631) 280 | Brentwood, NY | Suffolk | Cell Number |
| (631) 281 | Mastic, NY | Suffolk | Landline |
| (631) 282 | Yaphank, NY | Suffolk | Landline |
| (631) 283 | Southampton, NY | Suffolk | Landline |
| (631) 284 | Riverhead, NY | Suffolk | Landline |
| (631) 285 | Ronkonkoma, NY | Suffolk | Landline |
| (631) 286 | Bellport, NY | Suffolk | Landline |
| (631) 287 | Southampton, NY | Suffolk | Landline |
| (631) 288 | Westhampton Beach, NY | Suffolk | Landline |
| (631) 289 | Patchogue, NY | Suffolk | Landline |
| (631) 291 | Brentwood, NY | Suffolk | Cell Number |
| (631) 292 | Kings Park, NY | Suffolk | Landline |
| (631) 293 | Farmingdale, NY | Nassau | Landline |
| (631) 294 | Yaphank, NY | Suffolk | Cell Number |
| (631) 295 | Yaphank, NY | Suffolk | Landline |
| (631) 297 | Central Islip, NY | Suffolk | Landline |
| (631) 298 | Mattituck, NY | Suffolk | Landline |
| (631) 299 | Brentwood, NY | Suffolk | Landline |
| (631) 300 | Brentwood, NY | Suffolk | Landline |
| (631) 302 | West Sayville, NY | Suffolk | Landline |
| (631) 306 | Brentwood, NY | Suffolk | Landline |
| (631) 312 | Patchogue, NY | Suffolk | Landline |
| (631) 314 | Not filled | Not filled | Unknown |
| (631) 315 | Mattituck, NY | Not filled | Unknown |
| (631) 316 | Farmingdale, NY | Not filled | Unknown |
| (631) 317 | Patchogue, NY | Not filled | Unknown |
| (631) 318 | East Hampton, NY | Not filled | Unknown |
| (631) 319 | Sayville, NY | Not filled | Unknown |
| (631) 320 | Selden, NY | Not filled | Unknown |
| (631) 321 | Babylon, NY | Suffolk | Landline |
| (631) 322 | Brentwood, NY | Suffolk | Cell Number |
| (631) 323 | Greenport, NY | Suffolk | Landline |
| (631) 324 | East Hampton, NY | Suffolk | Landline |
We have 673 Prefixes in our database.