Cities and Towns in DuPage County, Illinois
Founded in 1839, DuPage County is one of 102 counties in the state of Illinois. Historically, DuPage County was formed from Cook County. The city of Wheaton is the county seat. With FIPS code of 43, DuPage County has a population of 924,885 and area of 327 square miles (847 km²).
List of all cities in DuPage County, IL alphabetically
| City/Town | Postal Code | Area Code |
| Addison, IL | 60101 | 630/331 |
| AT & T, IL | 60572 | 630/331 |
| Aurora, IL | 60502 | 630/331 |
| 60503 | 630/331 | |
| 60504 | 630/331 | |
| 60572 | 630/331 | |
| 60598 | 630/331 | |
| 60599 | 630/331 | |
| Bartlett, IL | 60103 | 630/331 |
| Bensenville, IL | 60105 | 708/464 |
| 60106 | 630/331 | |
| 60399 | 708/464 | |
| Bloomingdale, IL | 60108 | 630/331 |
| 60117 | 708/464 | |
| Bradford Group, IL | 60105 | 708/464 |
| Burr Ridge, IL | 60527 | 630/331 |
| Carol Stream, IL | 60116 | 630/331 |
| 60122 | 847/224 | |
| 60128 | 630/331 | |
| 60132 | 630/331 | |
| 60188 | 630/331 | |
| 60197 | 630/331 | |
| 60199 | 630/331 | |
| Chase Bank, IL | 60122 | 847/224 |
| Citicorp, IL | 60132 | 630/331 |
| Clarendon Hills, IL | 60514 | 630/331 |
| Cloverdale, IL | 60103 | 630/331 |
| Darien, IL | 60561 | 630/331 |
| Downers Grove, IL | 60515 | 630/331 |
| 60516 | 630/331 | |
| 60517 | 630/331 | |
| Elmhurst, IL | 60126 | 630/331 |
| Eola, IL | 60519 | 630/331 |
| Flowerfield, IL | 60148 | 630/331 |
| Fox Valley, IL | 60572 | 630/331 |
| 60599 | 630/331 | |
| Fox Valley Facility, IL | 60599 | 630/331 |
| Glen Ellyn, IL | 60137 | 630/331 |
| 60138 | 630/331 | |
| Glendale Heights, IL | 60137 | 630/331 |
| 60139 | 630/331 | |
| Great Lakes Area Office, IL | 60117 | 708/464 |
| Hinsdale, IL | 60521 | 630/331 |
| 60522 | 630/331 | |
| 60523 | 630/331 | |
| Household Finance Corp, IL | 60128 | 630/331 |
| Household Financial Services, IL | 60116 | 630/331 |
| Inktel Marketing, IL | 60399 | 708/464 |
| Itasca, IL | 60143 | 630/331 |
| Keeneyville, IL | 60172 | 630/331 |
| Lisle, IL | 60532 | 630/331 |
| Lombard, IL | 60148 | 630/331 |
| Medinah, IL | 60157 | 630/331 |
| Naperville, IL | 60540 | 630/331 |
| 60563 | 630/331 | |
| 60565 | 630/331 | |
| 60566 | 630/331 | |
| 60567 | 630/331 | |
| North Suburban, IL | 60128 | 630/331 |
| 60132 | 630/331 | |
| 60197 | 630/331 | |
| 60199 | 630/331 | |
| Northwoods, IL | 60185 | 630/331 |
| Oak Brook, IL | 60521 | 630/331 |
| 60522 | 630/331 | |
| 60523 | 630/331 | |
| 60561 | 630/331 | |
| Oak Brook Mall, IL | 60521 | 630/331 |
| Oakbrook Terrace, IL | 60181 | 630/331 |
| Ontarioville, IL | 60103 | 630/331 |
| Roselle, IL | 60172 | 630/331 |
| Villa Park, IL | 60181 | 630/331 |
| Warrenville, IL | 60555 | 630/331 |
| Wayne, IL | 60184 | 630/331 |
| West Chicago, IL | 60185 | 630/331 |
| 60186 | 630/331 | |
| Westmont, IL | 60559 | 630/331 |
| Wheaton, IL | 60187 | 630/331 |
| 60189 | 630/331 | |
| Willow Brook, IL | 60527 | 630/331 |
| Willowbrook, IL | 60527 | 630/331 |
| Winfield, IL | 60190 | 630/331 |
| Wood Dale, IL | 60191 | 630/331 |
| 60399 | 708/464 | |
| Woodridge, IL | 60517 | 630/331 |
