ZIP codes

ZIP codes in Calhoun County, Michigan

Calhoun County has 21 ZIP codes. 7 lie entirely inside it and 14 are shared with neighboring counties, so part of their land and their people are elsewhere. About 134,952 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 21; 1 more just touches the border (under 1% of their land)
Entirely inside: 7; 99% or more of their land
Shared with other counties: 14; Most with Branch County (5)
Most populated ZIP: 49015; 27,765 people · Battle Creek
Least populated ZIP: 49029; 1,415 people · Burlington
Largest ZIP by land: 49068; 130 sq mi · Marshall

Map of the ZIP codes in Calhoun 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 Calhoun County

21 ZIP codes in Calhoun County, MI, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
49011	Athens	2,236	89%	≈ 1,924
49012	Augusta	3,219	1.7%	≈ 107
49014	Battle Creek	21,980	100%	21,980
49015	Battle Creek	27,765	99.8%	≈ 27,762
49017	Battle Creek	21,295	77%	≈ 20,503
49021	Bellevue	6,319	15%	≈ 761
49029	Burlington	1,415	100%	1,415
49033	—	1,719	100%	1,719
49034	Battle Creek	1,938	21%	≈ 774
49037	Battle Creek	20,550	100%	20,550
49051	—	2,787	100%	2,787
49052	—	1,234	23%	≈ 306
49068	Marshall	14,729	100%	14,729
49076	Olivet	4,294	46%	≈ 1,462
49092	Tekonsha	1,908	72%	≈ 1,348
49094	Union City	3,778	22%	≈ 823
49224	Albion	13,447	69%	≈ 10,821
49237	Concord	3,097	5.9%	≈ 108
49245	Homer	4,547	96%	≈ 4,355
49252	Litchfield	2,556	4.8%	≈ 149
49284	Springport	2,493	30%	≈ 561

They also touch the county with under 1% of their land, so they aren’t counted: 48813.

ZIP codes shared with other counties

These 14 ZIP codes have part of their land in another county. The first figure is the share of their land in Calhoun County; then, where the rest lies.

49011 (Athens): 89% here; 8.9% in Branch County and 1.6% in St. Joseph County.
49012 (Augusta): 1.7% here; 98% in Kalamazoo County.
49017 (Battle Creek): 77% here; 23% in Barry County.
49021 (Bellevue): 15% here; 46% in Eaton County and 39% in Barry County.
49034 (Battle Creek): 21% here; 79% in Kalamazoo County.
49052: 23% here; 77% in Kalamazoo County.
49076 (Olivet): 46% here; 54% in Eaton County.
49092 (Tekonsha): 72% here; 28% in Branch County.
49094 (Union City): 22% here; 78% in Branch County.
49224 (Albion): 69% here; 31% in Jackson County.
49237 (Concord): 5.9% here; 94% in Jackson County.
49245 (Homer): 96% here; 2.1% in Branch County and 1.6% in Jackson County.
49252 (Litchfield): 4.8% here; 81% in Hillsdale County, 7.7% in Branch County, and 6.7% in Jackson County.
49284 (Springport): 30% here; 63% in Jackson County and 7.3% in Eaton 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 Battle Creek (5), Albion (1), Athens (1), Augusta (1), Bellevue (1), and Burlington (1); 14 places in all.

They start with 2 different three-digit prefixes, one per USPS sorting center: 490 and 492.

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.

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