Area code 331 is in Illinois (IL), USA and some of its main locations are Aurora, Wheaton, Downers Grove, etc. (jump to city list below).
Area code 331 has been in service since October 07, 2007 and is an overlay code part of overlay complex 630/331 (overlaying area codes cover the same geographic area).
06:45:50 PM is the current time in area code 331 (Central Time Zone).
NPANXX | Area served1 | Date2 |
---|---|---|
331-200 | Bartlett | 7/11/2011 |
331-201 | Downers Grove | 1/6/2012 |
331-202 | Elmhurst | 1/17/2012 |
331-203 | Aurora | 10/12/2011 |
331-204 | Naperville | 12/10/2015 |
331-205 | Aurora | 10/21/2011 |
331-206 | Aurora | 10/12/2011 |
331-207 | Yorkville | 11/1/2011 |
331-208 | Aurora | 11/8/2011 |
331-209 | Elmhurst | 1/17/2012 |
331-210 | St Charles | 3/6/2012 |
331-212 | Aurora | 4/5/2012 |
331-213 | Naperville | 9/6/2011 |
331-214 | Downers Grove | 6/20/2012 |
331-215 | Naperville | 9/28/2012 |
331-216 | Oswego | 10/31/2012 |
331-218 | Wheaton | 7/9/2013 |
331-219 | Aurora | 3/16/2017 |
331-220 | Aurora | 7/12/2011 |
331-221 | Elmhurst | 1/21/2009 |
331-222 | St Charles | 10/28/2008 |
331-223 | St Charles | 10/28/2008 |
331-225 | Elmhurst | 8/22/2011 |
331-226 | Naperville | 3/20/2017 |
331-227 | Sugar Grove | 5/17/2016 |
331-228 | St Charles | 9/21/2011 |
331-229 | Naperville | 11/27/2012 |
331-230 | Aurora | 4/5/2017 |
331-231 | Naperville | 8/7/2017 |
331-232 | West Chicago | 8/8/2017 |
331-233 | Downers Grove | 3/13/2017 |
331-234 | Sugar Grove | 7/8/2013 |
331-235 | St Charles | 10/17/2017 |
331-236 | Wheaton | 4/5/2017 |
331-237 | Naperville | 11/7/2017 |
331-238 | Downers Grove | 12/19/2017 |
331-239 | Yorkville | 8/27/2018 |
331-240 | West Chicago | 4/10/2013 |
331-241 | Lombard | 10/16/2018 |
331-242 | Lombard | 10/19/2018 |
331-243 | Lombard | 10/19/2018 |
331-244 | Naperville | 9/21/2017 |
331-245 | Bartlett | 4/18/2013 |
331-246 | Lemont | 10/19/2018 |
331-247 | Naperville | 11/21/2018 |
331-248 | Geneva | 7/6/2007 |
331-249 | Naperville | 12/5/2018 |
331-250 | Aurora | 4/10/2012 |
331-251 | Downers Grove | 12/5/2012 |
331-252 | Warrenville | 6/2/2016 |
331-253 | Lemont | 10/27/2014 |
331-254 | Sugar Grove | 7/16/2014 |
331-255 | Aurora | 8/22/2017 |
331-256 | Aurora | 9/13/2011 |
331-257 | Aurora | 1/17/2020 |
331-258 | Aurora | N/A |
331-259 | Sugar Grove | N/A |
331-260 | Downers Grove | 2/25/2019 |
331-261 | Lemont | 6/20/2019 |
331-262 | Aurora | 7/30/2008 |
331-263 | Itasca | 3/11/2016 |
331-264 | Hinsdale | 3/6/2020 |
331-265 | Geneva | N/A |
331-266 | St Charles | 4/10/2020 |
331-267 | Lombard | 9/18/2020 |
331-268 | Sugar Grove | 1/14/2021 |
331-269 | Aurora | 5/14/2021 |
331-270 | Aurora | 7/20/2021 |
331-271 | Hinsdale | 10/21/2020 |
331-272 | St Charles | 7/15/2021 |
331-273 | Lemont | 6/9/2021 |
331-274 | Aurora | 8/3/2021 |
331-275 | Bartlett | 8/3/2021 |
331-276 | St Charles | 11/10/2014 |
331-277 | Lombard | 8/6/2021 |
331-278 | Aurora | 8/13/2021 |
331-279 | Elmhurst | 10/15/2021 |
331-280 | Downers Grove | 12/29/2021 |
331-281 | Naperville | 10/25/2012 |
331-282 | Hinsdale | 12/10/2021 |
331-283 | Geneva | 2/23/2022 |
331-284 | Bartlett | 3/11/2022 |
331-285 | Naperville | 5/4/2022 |
331-286 | St Charles | 7/15/2022 |
331-287 | Aurora | 7/20/2022 |
331-288 | Elburn | 2/17/2022 |
331-289 | Hinsdale | 8/12/2022 |
331-290 | Aurora | 8/26/2022 |
331-291 | Downers Grove | 8/26/2022 |
331-292 | Downers Grove | 10/14/2022 |
331-299 | Hinsdale | 1/4/2021 |
NPANXX | Area served1 | Date2 |
---|---|---|
331-300 | Aurora | 3/17/2016 |
331-301 | Aurora | 3/13/2013 |
331-302 | Aurora | 2/11/2013 |
331-303 | Elburn | N/A |
331-304 | Bartlett | 2/20/2015 |
331-305 | Naperville | 8/15/2013 |
331-307 | Lombard | 10/13/2014 |
331-308 | Bartlett | 12/23/2014 |
331-310 | Big Rock | 12/29/2014 |
331-313 | Naperville | 8/16/2022 |
331-315 | Lombard | 8/8/2016 |
331-318 | Lemont | 8/1/2013 |
331-321 | Aurora | 7/20/2015 |
331-330 | Naperville | 8/19/2008 |
331-332 | Naperville | 11/3/2008 |
331-333 | Naperville | 11/3/2008 |
331-334 | Batavia | 6/2/2021 |
331-336 | Aurora | 10/11/2019 |
331-341 | Plano | 3/30/2021 |
331-345 | Naperville | 11/18/2020 |
331-348 | Elburn | 10/11/2019 |
331-356 | Bartlett | 10/10/2019 |
331-373 | Oswego | 2/25/2022 |
331-385 | Aurora | 9/28/2016 |
331-388 | Sugar Grove | 1/25/2021 |
331-399 | Downers Grove | 1/22/2021 |
NPANXX | Area served1 | Date2 |
---|---|---|
331-400 | Oswego | 8/8/2019 |
331-401 | Naperville | 12/14/2015 |
331-422 | St Charles | 11/13/2008 |
331-425 | Aurora | 7/11/2007 |
331-426 | Lemont | 2/18/2022 |
331-431 | Aurora | 5/26/2010 |
331-442 | St Charles | 10/30/2008 |
331-444 | Naperville | 8/4/2010 |
331-452 | Aurora | 9/20/2007 |
331-454 | Aurora | 5/7/2009 |
331-456 | Roselle | 12/5/2007 |
331-457 | Naperville | 11/14/2008 |
331-462 | Lombard | 8/23/2008 |
331-465 | West Chicago | 10/17/2007 |
331-466 | Glen Ellyn | 2/17/2022 |
331-472 | Naperville | 10/22/2008 |
331-481 | Downers Grove | 10/29/2008 |
NPANXX | Area served1 | Date2 |
---|---|---|
331-701 | Naperville | 12/11/2014 |
331-702 | Naperville | 10/23/2013 |
331-703 | West Chicago | 10/24/2013 |
331-704 | Kaneville | 4/21/2015 |
331-707 | Aurora | 8/23/2016 |
331-716 | Wheaton | 1/18/2016 |
331-717 | Oswego | 1/18/2016 |
331-725 | Oswego | N/A |
331-732 | Geneva | 10/11/2019 |
331-746 | Kaneville | 2/17/2022 |
331-757 | Lemont | 7/13/2016 |
331-758 | Aurora | 10/27/2021 |
331-771 | St Charles | 2/10/2016 |
331-775 | Downers Grove | 1/4/2016 |
331-777 | Downers Grove | 9/22/2010 |
331-788 | Geneva | 1/25/2021 |
NPANXX | Area served1 | Date2 |
---|---|---|
331-800 | West Chicago | 9/29/2017 |
331-801 | Downers Grove | 5/15/2014 |
331-803 | Lemont | 4/10/2013 |
331-806 | Wheaton | 6/11/2015 |
331-808 | Plano | 6/5/2015 |
331-814 | Naperville | 6/25/2015 |
331-825 | Geneva | N/A |
331-826 | Elmhurst | 11/18/2008 |
331-837 | West Chicago | 1/7/2022 |
331-850 | Big Rock | 3/30/2021 |
331-866 | Wheaton | 1/13/2022 |
331-867 | Yorkville | 7/14/2020 |
331-871 | West Chicago | 2/17/2016 |
331-888 | Warrenville | 9/24/2010 |
331-899 | Lombard | 12/22/2020 |
City1 | County | Time2 |
---|---|---|
Addison | Dupage | C |
Aurora | Kane | C |
Bartlett | Dupage | C |
Batavia | Kane | C |
Bensenville | Dupage | C |
Big Rock | Kane | C |
Bloomingdale | Dupage | C |
Bolingbrook | Will | C |
Bristol | Kendall | C |
Carol Stream | Dupage | C |
Clarendon Hills | Dupage | C |
Darien | Dupage | C |
Downers Grove | Dupage | C |
Elburn | Kane | C |
Elmhurst | Dupage | C |
Eola | Dupage | C |
Fox Valley | Dupage | C |
Geneva | Kane | C |
Glen Ellyn | Dupage | C |
Glendale Heights | Dupage | C |
Hanover Park | Cook | C |
Hinsdale | Dupage | C |
Itasca | Dupage | C |
Kaneville | Kane | C |
Lafox | Kane | C |
Lemont | Cook | C |
Lisle | Dupage | C |
Lombard | Dupage | C |
Medinah | Dupage | C |
Millbrook | Kendall | C |
Montgomery | Kendall | C |
Mooseheart | Kane | C |
Naperville | Will | C |
North Aurora | Kane | C |
Oak Brook | Dupage | C |
Oswego | Kendall | C |
Plano | Kendall | C |
Roselle | Dupage | C |
St Charles | Kane | C |
Streamwood | Cook | C |
Sugar Grove | Kane | C |
Villa Park | Dupage | C |
Warrenville | Dupage | C |
Wasco | Kane | C |
Wayne | Dupage | C |
West Chicago | Dupage | C |
Westmont | Dupage | C |
Wheaton | Dupage | C |
Willowbrook | Dupage | C |
Winfield | Dupage | C |
Wood Dale | Dupage | C |
Woodridge | Dupage | C |
Yorkville | Kendall | C |