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.

6,353Locations
585Cities Covered
ILState

USPS Coverage in Illinois

  • Largest presence: Chicago (2,154 locations)
  • Average per city: 10.9
  • Coverage: 585 Illinois cities

USPS Locations by City in Illinois585 cities

CityLocations
Chicago2,154
Springfield94
Arlington Hgts65
Melrose Park58
Rockford58
Skokie58
Niles57
Peoria56
Mount Prospect55
Des Plaines54
Oak Park52
Elk Grove Vlg50
Wheaton48
Oakbrook46
Schaumburg45
Glenview44
Evanston42
Aurora41
Northbrook41
Park Ridge40
Elgin39
Lombard39
Naperville38
Berwyn37
Champaign37
Decatur37
Joliet36
Buffalo Grove35
Bloomington34
East St Louis33
Glen Ellyn33
Libertyville32
Quincy32
Bartlett31
Franklin Park31
Wheeling30
Addison29
Elmhurst29
St Charles29
Palatine28
Westchester28
Wilmette28
Beach Park27
Collinsville27
Downers Grove26
Freeport26
Highland Park26
Hoffman Estates26
Midlothian26
Rolling Meadows26

Showing the top 50 of 585 cities. Get full Illinois coverage via API →

Sample Locations

LocationCity
Addison Post OfficeAddison
Public Collection BoxAddison
Public Collection BoxAddison
Public Collection BoxAddison
Public Collection BoxAddison

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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Other Carriers in Illinois

Central Transport3,134ABF Freight2,318TForce Freight9Estes Express8Saia LTL Freight6

USPS in Other States

New York13,972California10,819Pennsylvania8,914Massachusetts6,449Ohio5,019New Jersey4,784Florida3,635Maryland3,570Michigan3,396Texas2,842Connecticut2,225Washington1,803Missouri1,801Virginia1,653Indiana1,610North Carolina1,567Minnesota1,488Arizona1,487Colorado1,461Wisconsin1,459Georgia1,060Oregon1,026New Hampshire932Maine809Rhode Island776Alabama688South Carolina631Iowa630West Virginia609Delaware445Tennessee445Vermont438Nevada410Kentucky409Louisiana379Nebraska357Hawaii343Arkansas312Kansas311Utah262Puerto Rico245New Mexico205Montana150Oklahoma138Idaho123District of Columbia101Mississippi101Alaska72North Dakota71U.S. Virgin Islands29Wyoming16South Dakota14Guam7

Understand Freight Classification

What is NMFC? Freight Class Explained How LTL Shipping Works