Chicago-Naperville-Elgin, IL-IN metro area ZIP codes
The Chicago-Naperville-Elgin, IL-IN metropolitan statistical area (CBSA 16980) covers 13 counties in Illinois and Indiana and 467 ZIP codes.
- ZIP codes
- 467
- Population
- 9,373,522
- Avg. median income
- $96,200population-weighted
- Counties
- 13
Click anywhere on the map to see which ZIP code it's in.
Counties in the Chicago-Naperville-Elgin, IL-IN area
- Cook County, IL (central)
- DuPage County, IL (central)
- Grundy County, IL
- McHenry County, IL (central)
- Will County, IL (central)
- DeKalb County, IL
- Kane County, IL (central)
- Kendall County, IL (central)
- Lake County, IL (central)
- Jasper County, IN
- Lake County, IN (central)
- Newton County, IN
- Porter County, IN (central)
ZIP codes in the Chicago-Naperville-Elgin, IL-IN area
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Chicago-Naperville-Elgin, IL-IN metro area?
467 ZIP codes, based on each ZIP code's main county.
Which counties make up the Chicago-Naperville-Elgin, IL-IN area?
Cook County, IL, DuPage County, IL, Grundy County, IL, McHenry County, IL, Will County, IL, DeKalb County, IL, Kane County, IL, Kendall County, IL, Lake County, IL, Jasper County, IN, Lake County, IN, Newton County, IN and Porter County, IN.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).