Addison
Post Office
Mon-Fri 9:00am - 6:00pm, Sat 9:00am - 1:00pm, Sun Closed
Illinois Post Offices
Listing data as of July 31, 2026 · Confirm on USPS.com
Illinois's 163 post offices are spread across 154 cities, with dense clusters of neighborhood offices inside Chicago and its suburbs giving way to widely spaced small-town counters across the state's downstate farmland. That contrast means two Illinois post offices just a few miles apart in Chicago can look nothing like a rural office 100 miles south serving an entire farming township. Find your city in the list below.
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Post Offices in Illinois by City
Cities with 1–2 locations show their address and hours directly below. Cities with 3 or more show a link to see every location.
Algonquin
Post Office
Mon-Fri 8:30am - 5:30pm, Sat 8:30am - 1:00pm, Sun Closed
Alsey
Post Office
Mon-Fri 2:00pm - 4:00pm, Sat 8:00am - 9:30am, Sun Closed
Altamont
Post Office
Mon-Fri 9:00am - 12:00pm 12:30pm - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Upper Alton
Post Office
Mon-Fri 8:30am - 6:00pm, Sat 9:00am - 3:00pm, Sun Closed
Andalusia
Post Office
Mon-Fri 7:00am - 11:00am 12:00pm - 2:00pm, Sat 7:00am - 9:00am, Sun Closed
Antioch
Post Office
Mon-Fri 8:30am - 4:30pm, Sat 8:30am - 1:00pm, Sun Closed
Arlington Heights
Post Office
Mon-Fri 8:30am - 6:00pm, Sat 8:30am - 1:00pm, Sun Closed
Aurora
Post Office
Mon-Fri 8:30am - 7:00pm, Sat 8:30am - 4:00pm, Sun Closed
Aviston
Post Office
Mon-Fri 8:15am - 12:15pm 1:15pm - 3:15pm, Sat 9:00am - 10:00am, Sun Closed
Bartlett
Post Office
Mon-Fri 9:00am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Belknap
Post Office
Mon-Fri 1:00pm - 3:00pm, Sat 1:00pm - 2:15pm, Sun Closed
Benld
Post Office
Mon-Fri 8:00am - 12:00pm, Sat 11:00am - 12:00pm, Sun Closed
Brookfield
Post Office
Mon-Fri 8:30am - 6:00pm, Sat 8:30am - 3:00pm, Sun Closed
Buda
Post Office
Mon-Fri 7:00am - 11:00am, Sat 8:30am - 10:30am, Sun Closed
Bunker Hill
Post Office
Mon-Fri 9:00am - 11:30am 1:30pm - 4:30pm, Sat 9:00am - 10:45am, Sun Closed
Cambridge
Post Office
Mon-Fri 10:00am - 2:00pm, Sat 10:00am - 1:00pm, Sun Closed
Campbell Hill
Post Office
Mon-Fri 7:30am - 11:30am, Sat 7:30am - 9:45am, Sun Closed
Carol Stream
Post Office
Mon-Fri 7:00am - 7:00pm, Sat 8:00am - 2:00pm, Sun Closed
Casey
Post Office
Mon-Fri 9:00am - 1:00pm 2:00pm - 4:30pm, Sat 8:30am - 10:30am, Sun Closed
Cedarville
Post Office
Mon-Fri 9:00am - 1:00pm 2:00pm - 4:00pm, Sat 9:00am - 11:30am, Sun Closed
Cerro Gordo
Post Office
Mon-Fri 9:00am - 11:00am 1:00pm - 4:00pm, Sat 9:00am - 11:00am, Sun Closed
Channahon
Post Office
Mon-Fri 8:30am - 4:30pm, Sat 8:30am - 12:00pm, Sun Closed
Cherry
Post Office
Mon-Fri 7:00am - 11:00am, Sat 7:00am - 10:15am, Sun Closed
Chestnut
Post Office
Mon-Fri 8:30am - 12:30pm, Sat 8:30am - 10:15am, Sun Closed
Chicago
10 locations
Claremont
Post Office
Mon-Fri 7:30am - 11:30am, Sat 7:00am - 9:45am, Sun Closed
Coal Valley
Post Office
Mon-Fri 9:00am - 12:00pm 1:00pm - 5:00pm, Sat 8:30am - 10:30am, Sun Closed
Cutler
Post Office
Mon-Fri 7:00am - 11:00am, Sat 8:15am - 9:00am, Sun Closed
Dakota
Post Office
Mon-Fri 7:30am - 11:30am, Sat 8:30am - 11:30am, Sun Closed
Memorial
Post Office
Mon-Fri 8:00am - 5:00pm, Sat 8:00am - 2:00pm, Sun Closed
Dekalb
Post Office
Mon-Fri 8:30am - 6:30pm, Sat 8:30am - 2:30pm, Sun Closed
Des Plaines
Post Office
Mon-Fri 7:00am - 6:00pm, Sat 9:00am - 3:00pm, Sun Closed
East Peoria
Post Office
Lobby: Mon-Fri 8:00am - 5:00pm, Sat 8:00am - 12:00pm, Sun Closed
Alorton
Post Office
Mon-Fri 9:30am - 1:30pm, Sat 9:30am - 11:30am, Sun Closed
CPU First Clover Leaf Bank
Contract Postal Unit
Mon-Thu 9:00am - 5:00pm, Fri 9:00am - 6:00pm, Sat 8:30am - 12:00pm, Sun Closed
El Paso
Post Office
Mon-Fri 8:00am - 12:30pm 1:30pm - 5:00pm, Sat 8:00am - 11:00am, Sun Closed
Equality
Post Office
Mon-Fri 8:30am - 12:00pm 1:00pm - 3:30pm, Sat 9:00am - 10:00am, Sun Closed
Essex
Post Office
Mon-Fri 7:45am - 11:45am, Sat 9:00am - 11:00am, Sun Closed
Fairview
Post Office
Mon-Fri 12:00pm - 4:00pm, Sat 11:00am - 1:00pm, Sun Closed
Farmer City
Post Office
Mon-Fri 9:00am - 1:00pm 2:00pm - 4:30pm, Sat 9:00am - 12:00pm, Sun Closed
Farmington
Post Office
Mon-Fri 8:30am - 11:00am 12:00pm - 4:30pm, Sat 9:30am - 11:30am, Sun Closed
Findlay
Post Office
Mon-Fri 8:15am - 11:30am 12:30pm - 3:15pm, Sat 8:00am - 10:00am, Sun Closed
Fisher
Post Office
Mon-Fri 9:00am - 11:30am 1:30pm - 4:00pm, Sat 8:00am - 10:00am, Sun Closed
Fithian
Post Office
Mon-Fri 8:30am - 12:30pm, Sat 8:30am - 10:30am, Sun Closed
Flat Rock
Post Office
Mon-Fri 8:15am - 11:00am 12:00pm - 3:15pm, Sat 8:30am - 10:15am, Sun Closed
Flossmoor
Post Office
Mon-Fri 9:00am - 6:00pm, Sat 9:00am - 3:00pm, Sun Closed
Frankfort
Post Office
Mon-Fri 8:30am - 5:30pm, Sat 8:30am - 3:00pm, Sun Closed
Gibson City
Post Office
Mon-Fri 8:00am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Girard
Post Office
Mon-Fri 9:00am - 11:30am 12:30pm - 4:00pm, Sat 9:00am - 11:00am, Sun Closed
Gladstone
Post Office
Mon-Fri 12:00pm - 4:00pm, Sat 11:00am - 12:30pm, Sun Closed
Grand Chain
Post Office
Mon-Fri 11:00am - 3:00pm, Sat 9:00am - 10:00am, Sun Closed
Grayslake
Post Office
Mon-Fri 8:00am - 6:00pm, Sat 9:00am - 2:00pm, Sun Closed
Greenview
Post Office
Mon-Fri 9:00am - 12:00pm 1:00pm - 4:00pm, Sat 8:00am - 9:30am, Sun Closed
Hamel
Post Office
Mon-Fri 9:30am - 11:30am 1:30pm - 4:30pm, Sat 9:30am - 10:45am, Sun Closed
Hamilton
Post Office
Mon-Fri 9:00am - 5:00pm, Sat 8:30am - 10:30am, Sun Closed
Hartsburg
Post Office
Mon-Fri 8:00am - 12:00pm, Sat 8:30am - 10:15am, Sun Closed
Harvard
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 8:30am - 1:00pm, Sun Closed
Hoffman
Post Office
Mon-Fri 9:00am - 11:00am 12:00pm - 4:00pm, Sat 9:00am - 10:45am, Sun Closed
CPU Meijer #219
Contract Postal Unit
Mon-Sun 7:00am - 11:00pm
Hull
Post Office
Mon-Fri 12:00pm - 4:00pm, Sat 11:00am - 11:45am, Sun Closed
Ivesdale
Post Office
Mon-Fri 7:30am - 11:30am, Sat 9:00am - 11:00am, Sun Closed
Knoxville
Post Office
Mon-Fri 8:30am - 11:30am 12:30pm - 4:30pm, Sat 8:30am - 11:30am, Sun Closed
La Salle
Post Office
Mon-Fri 7:45am - 5:15pm, Sat 8:00am - 12:00pm, Sun Closed
Lake Bluff
Post Office
Mon-Fri 8:00am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Lawrenceville
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 9:30am - 12:00pm, Sun Closed
Leland
Post Office
Mon-Fri 7:30am - 12:30pm 1:30pm - 4:30pm, Sat 7:30am - 11:30am, Sun Closed
Litchfield
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 8:30am - 11:30am, Sun Closed
Lockport
Post Office
Mon-Fri 8:30am - 5:30pm, Sat 8:30am - 1:30pm, Sun Closed
Long Point
Post Office
Mon-Fri 12:30pm - 4:30pm, Sat 11:30am - 1:30pm, Sun Closed
Ludlow
Post Office
Mon-Fri 1:00pm - 5:00pm, Sat 11:00am - 1:00pm, Sun Closed
Lyndon
Post Office
Mon-Fri 9:00am - 1:00pm, Sat 11:00am - 12:00pm, Sun Closed
MacEdonia
Post Office
Mon-Fri 8:00am - 12:00pm, Sat 8:00am - 9:30am, Sun Closed
Macon
Post Office
Mon-Fri 8:00am - 12:00pm 1:00pm - 3:00pm, Sat 8:00am - 9:30am, Sun Closed
Madison
Post Office
Mon-Fri 9:00am - 11:00am 12:30pm - 4:30pm, Sat 9:00am - 11:00am, Sun Closed
Maeystown
Post Office
Mon-Fri 2:00pm - 4:00pm, Sat 11:00am - 12:00pm, Sun Closed
Makanda
Post Office
Mon-Fri 8:00am - 11:00am 12:00pm - 3:00pm, Sat 8:00am - 10:00am, Sun Closed
Martinsville
Post Office
Mon-Fri 8:30am - 11:00am 12:30pm - 4:30pm, Sat 9:15am - 11:00am, Sun Closed
Matherville
Post Office
Mon-Fri 10:30am - 2:30pm, Sat 10:30am - 12:15pm, Sun Closed
Mattoon
Post Office
Mon-Fri 9:00am - 4:30pm, Sat 10:00am - 12:00pm, Sun Closed
CPU Meijer 60050
Contract Postal Unit
Mon-Sun 7:00am - 11:00pm
Melvin
Post Office
Mon-Fri 7:30am - 11:30am, Sat 8:45am - 10:45am, Sun Closed
Mendota
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 8:30am - 12:00pm, Sun Closed
Metropolis
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Milan
Post Office
Mon-Fri 9:00am - 1:00pm 2:00pm - 4:30pm, Sat 9:00am - 12:00pm, Sun Closed
Moro
Post Office
Mon-Fri 10:00am - 1:00pm 2:00pm - 5:00pm, Sat 10:00am - 11:00am, Sun Closed
Morrisonville
Post Office
Mon-Fri 8:00am - 11:00am 12:00pm - 3:00pm, Sat 8:00am - 10:00am, Sun Closed
Mound City
Post Office
Mon-Fri 12:30pm - 4:30pm, Sat 9:00am - 10:00am, Sun Closed
Mount Erie
Post Office
Mon-Fri 8:00am - 12:00pm, Sat 8:15am - 10:00am, Sun Closed
Muddy
Post Office
Mon-Fri 12:15pm - 2:15pm, Sat 11:00am - 1:00pm, Sun Closed
Muncie
Post Office
Mon-Fri 1:45pm - 3:45pm, Sat 10:00am - 12:00pm, Sun Closed
Naperville Sta
Post Office
Mon-Fri 9:00am - 6:00pm, Sat 9:00am - 5:00pm, Sun Closed
National Stock Yards
Post Office
Mon-Fri 12:30pm - 4:30pm, Sat-Sun Closed
New Douglas
Post Office
Mon-Fri 8:00am - 12:00pm, Sat 8:15am - 9:15am, Sun Closed
Nilwood
Post Office
Mon-Fri 2:00pm - 4:00pm, Sat 11:30am - 1:30pm, Sun Closed
North Henderson
Post Office
Mon-Fri 12:00pm - 4:00pm, Sat 11:30am - 12:30pm, Sun Closed
Northfield
Post Office
Mon-Fri 8:30am - 5:30pm, Sat 9:00am - 2:30pm, Sun Closed
Oak Brook
Post Office
Mon-Fri 8:00am - 6:00pm, Sat 8:00am - 3:00pm, Sun Closed
Ohio
Post Office
Mon-Fri 7:30am - 11:30am 12:30pm - 2:30pm, Sat 8:30am - 10:30am, Sun Closed
Olive Branch
Post Office
Mon-Fri 12:30pm - 4:30pm, Sat 10:00am - 11:00am, Sun Closed
Olympia Fields
Post Office
Mon-Fri 9:00am - 5:00pm, Sat 9:00am - 2:00pm, Sun Closed
Palatine
Post Office
Mon-Fri 8:30am - 5:30pm, Sat 8:30am - 2:30pm, Sun Closed
Patterson
Post Office
Mon-Fri 10:00am - 12:00pm, Sat 10:00am - 1:30pm, Sun Closed
CPU Hy Vee Foods #1525
Contract Postal Unit
Mon-Sun 7:00am - 10:00pm
Pierron
Post Office
Mon-Fri 7:30am - 11:30am, Sat 10:30am - 12:15pm, Sun Closed
VPO Poplar Grove
Village Post Office
Call ahead for hours
Prairie City
Post Office
Mon-Fri 7:00am - 11:00am, Sat 7:15am - 8:45am, Sun Closed
Princeton
Post Office
Mon-Fri 8:00am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Quincy
Post Office
Mon-Fri 7:30am - 5:30pm, Sat 8:30am - 2:00pm, Sun Closed
Rapids City
Post Office
Mon-Fri 8:30am - 12:00pm 1:30pm - 4:30pm, Sat 9:00am - 10:30am, Sun Closed
Reddick
Post Office
Mon-Fri 7:45am - 11:45am, Sat 8:30am - 10:30am, Sun Closed
Robbins
Post Office
Mon-Fri 9:00am - 4:30pm, Sat 9:00am - 3:00pm, Sun Closed
Roberts
Post Office
Mon-Fri 7:30am - 11:30am, Sat 8:30am - 10:30am, Sun Closed
Rochester
Post Office
Mon-Fri 8:00am - 12:30pm 1:00pm - 5:00pm, Sat 9:00am - 11:30am, Sun Closed
Rockwood
Post Office
Mon-Fri 8:00am - 12:00pm, Sat 8:00am - 9:45am, Sun Closed
VPO Roodhouse
Village Post Office
Call ahead for hours
Roscoe
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 8:30am - 12:30pm, Sun Closed
Sadorus
Post Office
Mon-Fri 7:30am - 11:30am, Sat 7:30am - 9:30am, Sun Closed
Saint David
Post Office
Mon-Fri 12:00pm - 4:00pm, Sat 11:15am - 12:45pm, Sun Closed
Schaumburg
Post Office
Mon-Fri 8:30am - 7:00pm, Sat 8:30am - 4:00pm, Sun Closed
Seneca
Post Office
Mon-Fri 9:00am - 12:30pm 1:30pm - 4:30pm, Sat 9:00am - 11:00am, Sun Closed
Sheridan
Post Office
Mon-Fri 7:30am - 4:30pm, Sat 7:30am - 11:30am, Sun Closed
Shipman
Post Office
Mon-Fri 8:30am - 12:30pm 1:30pm - 3:30pm, Sat 8:30am - 10:30am, Sun Closed
Shirley
Post Office
Mon-Fri 8:30am - 12:30pm, Sat 8:30am - 10:30am, Sun Closed
Sidell
Post Office
Mon-Fri 7:45am - 11:45am, Sat 8:00am - 10:00am, Sun Closed
Sigel
Post Office
Mon-Fri 8:30am - 12:00pm 1:00pm - 3:30pm, Sat 8:00am - 9:45am, Sun Closed
Silvis
Post Office
Mon-Fri 8:00am - 12:00pm 1:00pm - 4:00pm, Sat-Sun Closed
Smithfield
Post Office
Mon-Fri 7:30am - 11:30am, Sat 8:00am - 9:30am, Sun Closed
Somonauk
Post Office
Mon-Fri 7:00am - 5:00pm, Sat 8:00am - 12:00pm, Sun Closed
South Pekin
Post Office
Mon-Fri 9:30am - 12:30pm 1:30pm - 4:30pm, Sat 8:30am - 10:00am, Sun Closed
South Roxana
Post Office
Mon-Fri 8:00am - 12:00pm 1:00pm - 3:00pm, Sat 8:30am - 10:00am, Sun Closed
Stewardson
Post Office
Mon-Fri 8:00am - 11:00am 12:00pm - 3:00pm, Sat 8:30am - 10:15am, Sun Closed
Stockland
Post Office
Mon-Fri 9:00am - 11:00am, Sat 8:30am - 10:00am, Sun Closed
Stonefort
Post Office
Mon-Fri 8:00am - 12:00pm, Sat 8:00am - 9:15am, Sun Closed
Summerfield
Post Office
Mon-Fri 12:30pm - 4:30pm, Sat 10:00am - 10:30am, Sun Closed
Toulon
Post Office
Mon-Fri 9:00am - 11:00am 12:00pm - 4:00pm, Sat 9:00am - 10:30am, Sun Closed
Troy
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Venice
Post Office
Mon-Fri 2:00pm - 4:00pm, Sat 8:30am - 10:15am, Sun Closed
VPO Vermont
Village Post Office
Call ahead for hours
Vienna
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 9:00am - 11:00am, Sun Closed
Viola
Post Office
Mon-Fri 7:15am - 11:15am 12:15pm - 2:15pm, Sat 9:00am - 11:00am, Sun Closed
Wadsworth
Post Office
Mon-Fri 7:30am - 4:00pm, Sat 8:30am - 11:00am, Sun Closed
Walnut Hill
Post Office
Mon-Fri 1:00pm - 5:00pm, Sat 10:00am - 11:30am, Sun Closed
Wasco
Post Office
Mon-Fri 7:30am - 11:00am 1:00pm - 4:30pm, Sat 8:00am - 12:00pm, Sun Closed
Washburn
Post Office
Mon-Fri 7:00am - 11:00am 12:00pm - 2:00pm, Sat 9:00am - 10:30am, Sun Closed
Washington
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Watseka
Post Office
Mon-Fri 8:00am - 5:00pm, Sat 8:30am - 12:00pm, Sun Closed
Waukegan
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 8:30am - 12:00pm, Sun Closed
Wheeler
Post Office
Mon-Fri 7:30am - 11:30am, Sat 8:00am - 9:45am, Sun Closed
Willisville
Post Office
Mon-Fri 12:30pm - 4:30pm, Sat 9:45am - 11:45am, Sun Closed
Wilmington
Post Office
Mon-Fri 8:30am - 5:00pm, Sat 8:30am - 12:00pm, Sun Closed
Winthrop Harbor
Post Office
Mon-Fri 8:30am - 4:30pm, Sat 9:00am - 12:00pm, Sun Closed
Wonder Lake
Post Office
Mon-Fri 8:00am - 5:00pm, Sat 9:00am - 12:00pm, Sun Closed
Woodland
Post Office
Mon-Fri 12:00pm - 4:00pm, Sat 9:00am - 12:00pm, Sun Closed
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