Area code 331 is in Illinois (IL), USA and some of the main locations it covers are Aurora, Wheaton, Downers Grove, etc. (jump to city list below).
In service since October 07, 2007, area code 331 is an overlay Numbering Plan Area, part of overlay complex 630/331 (overlaying NPAs cover the same area).
The current time for places served by area code 331 is 07:15:24 PM (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 |
331-217 | Lombard | 07/11/2023 |
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 |
331-224 | Itasca | 06/05/2023 |
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 |
331-293 | Aurora | 01/10/2023 |
331-294 | Naperville | 01/12/2023 |
331-295 | Aurora | 02/07/2023 |
331-296 | Wheaton | 04/18/2023 |
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 |
331-343 | Downers Grove | 01/13/2023 |
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 |