Area Code Information
| Area Code: | 331 |
| State: | Illinois |
| Primary City: | Aurora, Illinois |
| Time Zone: | Central |
Area code 331 serves the Aurora, Illinois region in Illinois. This area code is in the Central time zone.
Browse Prefixes
Click on any prefix to browse phone numbers in that exchange:
331-200
331-201
331-202
331-203
331-204
331-205
331-206
331-207
331-208
331-209
331-210
331-211
331-212
331-213
331-214
331-215
331-216
331-217
331-218
331-219
331-220
331-221
331-222
331-223
331-224
331-225
331-226
331-227
331-228
331-229
Showing sample prefixes. All prefixes from 200-999 are available.