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State ZIP codes · IL

Illinois ZIP Codes

Illinois has 1,396 residential ZIP codes in 102 counties, with first three digits 600–620, 622–629, plus 179 PO Box or single-organization ZIP codes (Census 2020 ZCTAs; GeoNames postal codes, October 2026).

  • ACS2020-24
  • Census2020
  • GeoNames2026

Map of Illinois's ZIP codes

Map of the residential ZIP codes of Illinois, shaded by median household income in national fifths
Residential ZIP codes (Census 2020 ZCTA outlines), shaded by median household income in national fifths (ACS 2020-2024). The full list follows. <$54.1k$98.1k+

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

Which Illinois ZIP codes earn the most and least?

Highest median household income
60022Glencoe · $250,000 or more
Lowest median household income
61605Peoria · $26,392
Highest median home value
60043Kenilworth · $1,560,300
Lowest median home value
62205East Saint Louis · $41,800

Highest and lowest among the ZIP codes of 1,000 or more people living in households, whose estimate's margin is at most 25% of it (a campus, a base or a ZIP code of a few hundred people does not lead). 3 ranked ZIP codes report a median household income at the ACS cap of $250,000 or more; they share the top.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077); every residential ZIP code with an estimate.

Which Illinois cities have the most ZIP codes?

ZIP codes by their first three digits

  • 600 Palatine, IL 82 ZIPs
  • 601 Carol Stream, IL 89 ZIPs
  • 602 Palatine, IL 6 ZIPs
  • 603 Carol Stream, IL 6 ZIPs
  • 604 South Suburban, IL 83 ZIPs
  • 605 Fox Valley, IL 65 ZIPs
  • 606 Chicago, IL 83 ZIPs
  • 607 Chicago, IL 5 ZIPs
  • 608 Chicago, IL 4 ZIPs
  • 609 Champaign, IL 57 ZIPs
  • 610 Palatine, IL 66 ZIPs
  • 611 Palatine, IL 19 ZIPs
  • 612 Quad Cities, IL 47 ZIPs
  • 613 Peoria, IL 62 ZIPs
  • 614 Peoria, IL 73 ZIPs
  • 615 Peoria, IL 48 ZIPs
  • 616 Peoria, IL 33 ZIPs
  • 617 Champaign, IL 60 ZIPs
  • 618 Champaign, IL 62 ZIPs
  • 619 Champaign, IL 30 ZIPs
  • 620 St Louis, MO 78 ZIPs
  • 622 St Louis, MO 79 ZIPs
  • 623 Springfield, IL 54 ZIPs
  • 624 Champaign, IL 61 ZIPs
  • 625 Springfield, IL 53 ZIPs
  • 626 Springfield, IL 62 ZIPs
  • 627 Springfield, IL 35 ZIPs
  • 628 St Louis, MO 90 ZIPs
  • 629 St Louis, MO 83 ZIPs

ZIP codes in each county of Illinois

Source: U.S. Census Bureau, 2020 ZCTA-county relationship file; GeoNames postal codes (CC BY 4.0).

Every ZIP code in Illinois, by county

Download the 1,575 ZIP codes as CSV

Adams

Alexander

Bond

Boone

Brown

Bureau

Calhoun

Carroll

Cass

Champaign

Christian

Clark

Clay

Clinton

Coles

Cook

Crawford

Cumberland

De Witt

DeKalb

Douglas

DuPage

Edgar

Edwards

Effingham

Fayette

Ford

Franklin

Fulton

Gallatin

Greene

Grundy

Hamilton

Hancock

Hardin

Henderson

Henry

Iroquois

Jackson

Jasper

Jefferson

Jersey

Jo Daviess

Johnson

Kane

Kankakee

Kendall

Knox

LaSalle

Lake

Lawrence

Lee

Livingston

Logan

Macon

Macoupin

Madison

Marion

Marshall

Mason

Massac

McDonough

McHenry

McLean

Menard

Mercer

Monroe

Montgomery

Morgan

Moultrie

Ogle

Peoria

Perry

Piatt

Pike

Pope

Pulaski

Putnam

Randolph

Richland

Rock Island

Saline

Sangamon

Schuyler

Scott

Shelby

St. Clair

Stark

Stephenson

Tazewell

Union

Vermilion

Wabash

Warren

Washington

Wayne

White

Whiteside

Will

Williamson

Winnebago

Woodford

Source: U.S. Census Bureau 2020 ZCTAs; GeoNames postal codes for ZIP codes without a residential area.