Area Code Information
| Area Code: | 636 |
| State: | Missouri |
| Primary City: | OFallon, Missouri |
| Time Zone: | Central |
Area code 636 serves the OFallon, Missouri region in Missouri. This area code is in the Central time zone.
Browse Prefixes
Click on any prefix to browse phone numbers in that exchange:
636-200
636-201
636-202
636-203
636-204
636-205
636-206
636-207
636-208
636-209
636-210
636-211
636-212
636-213
636-214
636-215
636-216
636-217
636-218
636-219
636-220
636-221
636-222
636-223
636-224
636-225
636-226
636-227
636-228
636-229
Showing sample prefixes. All prefixes from 200-999 are available.