Lake County ZIP Codes
Lake County is a county of Illinois.
- ZIP codes
- 33
- Cities & towns
- 29
- Area codes
- 8
- Land area
- 444 sq mi
Every ZIP code in Lake County
| ZIP code | City |
|---|---|
| 60002 | Antioch |
| 60010 | Barrington |
| 60011 | Barrington |
| 60015 | Deerfield |
| 60020 | Fox Lake |
| 60030 | Grayslake |
| 60031 | Gurnee |
| 60035 | Highland Park |
| 60037 | Fort Sheridan |
| 60040 | Highwood |
| 60041 | Ingleside |
| 60042 | Island Lake |
| 60044 | Lake Bluff |
| 60045 | Lake Forest |
| 60046 | Lake Villa |
| 60047 | Lake Zurich |
| 60048 | Libertyville |
| 60060 | Mundelein |
| 60061 | Vernon Hills |
| 60064 | North Chicago |
| 60069 | Lincolnshire |
| 60073 | Round Lake |
| 60075 | Russell |
| 60079 | Waukegan |
| 60083 | Wadsworth |
| 60084 | Wauconda |
| 60085 | Waukegan |
| 60086 | North Chicago |
| 60087 | Waukegan |
| 60088 | Great Lakes |
| 60089 | Buffalo Grove |
| 60096 | Winthrop Harbor |
| 60099 | Zion |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Lake County codes above are listed without a column we would have to invent.
Cities and towns in Lake County
A further 4 places in Lake County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Lake County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
- 224 Area code 224
- 312 Area code 312
- 331 Area code 331
- 464 Area code 464
- 630 Area code 630
- 708 Area code 708
- 847 Area code 847
- 872 Area code 872
Where Lake County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Lake County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.