Illinois Phone Prefixes in 331-2XX Area Code

Phone Prefixes in the 331-2XX Area Code

Prefix Usage Primary City
(331) 225 Wireless Elmhurst
(331) 221 Landline Elmhurst
(331) 210 Landline Saint Charles
(331) 212 Landline Aurora
(331) 209 Wireless Elmhurst
(331) 214 Wireless Downers Grove
(331) 202 Wireless Elmhurst
(331) 229 Wireless Naperville
(331) 245 Wireless Bartlett
(331) 240 Landline West Chicago
(331) 251 Wireless Downers Grove
(331) 250 Wireless Aurora
(331) 213 Wireless Naperville
(331) 234 Wireless Sugar Grove
(331) 207 Landline Yorkville
(331) 201 Wireless Downers Grove
(331) 248 Landline Geneva
Prefix Usage Primary City
(331) 204 Landline Bartlett
(331) 254 Unknown
(331) 220 Wireless Aurora
(331) 222 Wireless Saint Charles
(331) 262 Wireless Aurora
(331) 216 Wireless Oswego
(331) 223 Wireless Saint Charles
(331) 281 Landline Naperville
(331) 203 Wireless Aurora
(331) 215 Wireless Naperville
(331) 208 Wireless Aurora
(331) 228 Wireless Saint Charles
(331) 256 Wireless Aurora
(331) 205 Wireless Aurora
(331) 200 Wireless Bartlett
(331) 218 Wireless Wheaton
(331) 206 Wireless Aurora

More 3XX Area Codes Phone Numbers