USPS Locations in Illinois
USPS maintains an extensive network of 6,353 locations spanning 585 cities across Illinois, with the densest coverage in Chicago, Springfield and Arlington Hgts.
6,353
Locations
585
Cities Covered
IL
State
USPS Coverage in Illinois
- Largest presence: Chicago (2,154 locations)
- Average per city: 10.9
- Coverage: 585 Illinois cities
USPS Locations by City in Illinois
| City | Locations |
|---|---|
| Chicago | 2,154 |
| Springfield | 94 |
| Arlington Hgts | 65 |
| Melrose Park | 58 |
| Rockford | 58 |
| Skokie | 58 |
| Niles | 57 |
| Peoria | 56 |
| Mount Prospect | 55 |
| Des Plaines | 54 |
| Oak Park | 52 |
| Elk Grove Vlg | 50 |
| Wheaton | 48 |
| Oakbrook | 46 |
| Schaumburg | 45 |
| Glenview | 44 |
| Evanston | 42 |
| Aurora | 41 |
| Northbrook | 41 |
| Park Ridge | 40 |
| Elgin | 39 |
| Lombard | 39 |
| Naperville | 38 |
| Berwyn | 37 |
| Champaign | 37 |
| Decatur | 37 |
| Joliet | 36 |
| Buffalo Grove | 35 |
| Bloomington | 34 |
| East St Louis | 33 |
| Glen Ellyn | 33 |
| Libertyville | 32 |
| Quincy | 32 |
| Bartlett | 31 |
| Franklin Park | 31 |
| Wheeling | 30 |
| Addison | 29 |
| Elmhurst | 29 |
| St Charles | 29 |
| Palatine | 28 |
| Westchester | 28 |
| Wilmette | 28 |
| Beach Park | 27 |
| Collinsville | 27 |
| Downers Grove | 26 |
| Freeport | 26 |
| Highland Park | 26 |
| Hoffman Estates | 26 |
| Midlothian | 26 |
| Rolling Meadows | 26 |
Showing the top 50 of 585 cities. Get full Illinois coverage via API →
Sample Locations
| Location | City |
|---|---|
| Addison Post Office | Addison |
| Public Collection Box | Addison |
| Public Collection Box | Addison |
| Public Collection Box | Addison |
| Public Collection Box | Addison |
Showing 5 of 6,353 locations. Get the complete Illinois dataset via API →
USPS Location API
Query USPS locations in Illinois programmatically - ZIP lookup, coverage, and batch queries.
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USPS in Other States
New York (13,972)·California (10,819)·Pennsylvania (8,914)·Massachusetts (6,449)·Ohio (5,019)·New Jersey (4,784)·Florida (3,635)·Maryland (3,570)·Michigan (3,396)·Texas (2,842)·Connecticut (2,225)·Washington (1,803)·Missouri (1,801)·Virginia (1,653)·Indiana (1,610)·North Carolina (1,567)·Minnesota (1,488)·Arizona (1,487)·Colorado (1,461)·Wisconsin (1,459)·Georgia (1,060)·Oregon (1,026)·New Hampshire (932)·Maine (809)·Rhode Island (776)·Alabama (688)·South Carolina (631)·Iowa (630)·West Virginia (609)·Delaware (445)·Tennessee (445)·Vermont (438)·Nevada (410)·Kentucky (409)·Louisiana (379)·Nebraska (357)·Hawaii (343)·Arkansas (312)·Kansas (311)·Utah (262)·Puerto Rico (245)·New Mexico (205)·Montana (150)·Oklahoma (138)·Idaho (123)·District of Columbia (101)·Mississippi (101)·Alaska (72)·North Dakota (71)·U.S. Virgin Islands (29)·Wyoming (16)·South Dakota (14)·Guam (7)