ZIP codes

ZIP codes in Madison County, Illinois

Madison County has 36 ZIP codes. 20 lie entirely inside it and 16 are shared with neighboring counties, so part of their land and their people are elsewhere. About 266,386 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 36; With 1% or more of their land inside
Entirely inside: 20; 99% or more of their land
Shared with other counties: 16; Most with St. Clair County (6)
Most populated ZIP: 62040; 40,404 people · Granite City
Least populated ZIP: 62026; 851 people · Edwardsville
Largest ZIP by land: 62025; 112 sq mi · Edwardsville

Map of the ZIP codes in Madison County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Madison County

36 ZIP codes in Madison County, IL, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
62001	Alhambra	1,869	100%	1,869
62002	Alton	29,543	93%	≈ 29,332
62010	Bethalto	11,028	100%	11,028
62012	Brighton	6,672	5.4%	≈ 1,524
62018	East Alton	3,184	100%	3,184
62021	Prairietown	871	98%	≈ 859
62024	East Alton	9,493	100%	9,493
62025	Edwardsville	35,520	100%	35,520
62026	Edwardsville	851	100%	851
62034	Glen Carbon	14,870	100%	14,870
62035	Godfrey	15,892	70%	≈ 14,778
62040	Granite City	40,404	100%	40,404
62046	Hamel	1,102	100%	1,102
62048	Madison	1,347	100%	1,347
62058	Livingston	884	100%	884
62060	Madison	3,558	95%	≈ 3,516
62061	Marine	1,487	100%	1,487
62062	Maryville	8,277	100%	8,277
62067	Moro	2,203	100%	2,203
62074	New Douglas	1,205	75%	≈ 827
62084	Roxana	1,631	100%	1,631
62086	Sorento	1,318	2.9%	≈ 68
62087	South Roxana	2,181	100%	2,181
62088	Staunton	6,400	36%	≈ 799
62090	Venice	1,039	100%	1,039
62095	Wood River	10,726	100%	10,726
62097	Worden	2,973	100%	2,973
62201	Fairmont City	4,921	4.0%	≈ 86
62216	Aviston	3,156	8.0%	≈ 113
62234	Collinsville	31,648	83%	≈ 27,831
62249	Highland	16,205	90%	≈ 15,977
62254	Lebanon	6,710	1.7%	≈ 174
62275	Pocahontas	3,012	17%	≈ 890
62281	St. Jacob	3,059	100%	3,059
62293	Trenton	4,433	16%	≈ 330
62294	Troy	15,325	97%	≈ 15,154

ZIP codes shared with other counties

These 16 ZIP codes have part of their land in another county. The first figure is the share of their land in Madison County; then, where the rest lies.

62002 (Alton): 93% here; 7.2% in Macoupin County.
62012 (Brighton): 5.4% here; 50% in Jersey County and 45% in Macoupin County.
62021 (Prairietown): 98% here; 2.3% in Macoupin County.
62035 (Godfrey): 70% here; 30% in Jersey County.
62060 (Madison): 95% here; 4.9% in St. Clair County.
62074 (New Douglas): 75% here; 13% in Bond County, 8.0% in Macoupin County, and 3.7% in Montgomery County.
62086 (Sorento): 2.9% here; 76% in Bond County and 21% in Montgomery County.
62088 (Staunton): 36% here; 64% in Macoupin County.
62201 (Fairmont City): 4.0% here; 96% in St. Clair County.
62216 (Aviston): 8.0% here; 92% in Clinton County.
62234 (Collinsville): 83% here; 17% in St. Clair County.
62249 (Highland): 90% here; 7.5% in Clinton County and 2.3% in Bond County.
62254 (Lebanon): 1.7% here; 98% in St. Clair County.
62275 (Pocahontas): 17% here; 76% in Bond County and 6.4% in Clinton County.
62293 (Trenton): 16% here; 46% in Clinton County and 37% in St. Clair County.
62294 (Troy): 97% here; 2.8% in St. Clair County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are East Alton (2), Edwardsville (2), Madison (2), Alhambra (1), Alton (1), and Aviston (1); 33 places in all.

They start with 2 different three-digit prefixes, one per USPS sorting center: 620 and 622.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

Spotted a mistake? Let us know