DuPage County, Illinois

Time zones in DuPage County

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

1. 6014852,596 people
2. 6044051,940 people
3. 6012647,516 people
4. 6056447,016 people
5. 6018842,307 people
6. 6054042,252 people
7. 6010341,382 people
8. 6056540,483 people
9. 6050439,358 people
10. 6056339,330 people
11. 6013738,696 people
12. 6010137,448 people

43 ZIP Code areas overlap DuPage County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

We don’t have a website for this county yet. The US government’s local-office directory ↗ lists its offices. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Townships in DuPage County, largest first

1. Downers Grove Township149,038 people
2. York Township127,667 people
3. Milton Township119,372 people
4. Lisle Township118,895 people
5. Bloomingdale Township111,175 people
6. Naperville Township105,406 people
7. Addison Township87,658 people
8. Wayne Township63,881 people
9. Winfield Township46,932 people

People counts are American Community Survey 2020–2024 5-year estimates. All townships in Illinois, by county

School districts in DuPage County, largest first

1. Chicago Public School District 2992,711,226 people
2. School District U-46231,754 people
3. Glenbard Township High School District 87164,417 people
4. Indian Prairie Community Unit School District 204136,452 people
5. Community High School District 99111,937 people
6. Naperville Community Unit District 20396,944 people
7. DuPage High School District 8882,681 people
8. Community Unit School District 20080,727 people
9. Hinsdale Township High School District 8675,819 people
10. St. Charles Community Unit School District 30368,211 people
11. Downers Grove Grade School District 5854,087 people
12. Lake Park Community High School District 10851,905 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

1. Chicago, Illinois (city)2,711,226 people
2. Aurora, Illinois (city)179,898 people
3. Naperville, Illinois (city)150,692 people
4. Schaumburg, Illinois (village)76,868 people
5. Bolingbrook, Illinois (village)74,096 people
6. Wheaton, Illinois (city)53,557 people
7. Downers Grove, Illinois (village)50,054 people
8. Elmhurst, Illinois (city)45,671 people
9. Lombard, Illinois (village)43,619 people
10. Bartlett, Illinois (village)40,501 people
11. Carol Stream, Illinois (village)39,460 people
12. Hanover Park, Illinois (village)36,732 people

See all 39 cities, towns and communities in DuPage County, largest first

Bordering areas, nearest first

Distances are straight lines between map points.

1. Kane County, Illinois19 mi west
2. Cook County, Illinois23 mi east
3. Will County, Illinois28 mi south

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See this county on Census.gov ↗