Area Code 3XX (NPA)

Germantown, MD 301
Delaware 302
Denver, CO 303
West Virginia 304
Miami, FL 305
Saskatchewan 306
Wyoming 307
Grand Island, NE 308
Peoria, IL 309
Los Angeles, CA 310
Chicago, IL 312
Detroit, MI 313
St. Louis, MO 314
Syracuse, NY 315
Wichita, KS 316
Indianapolis, IN 317
Shreveport, LA 318
Cedar Rapids, IA 319
St. Cloud, MN 320
Orlando, FL 321
Los Angeles, CA 323
Abilene, TX 325
Akron, OH 330
Aurora, IL 331
New York, NY 332
Montgomery, AL 334
Greensboro, NC 336
Lafayette, LA 337
Boston, MA 339
Virgin Islands 340
Ottawa, ON 343
Houston, TX 346
New York, NY 347
Lowell, MA 351
Gainesville, FL 352
Vancouver, WA 360
Corpus Christi, TX 361
Bowling Green, KY 364
Hamilton, ON 365
Quebec, QC 367
Columbus, OH 380
Salt Lake City, UT 385
Palm Coast, FL 386