ZIP codes

ZIP codes in Kent County, Michigan

Kent County has 38 ZIP codes. 19 lie entirely inside it and 19 are shared with neighboring counties, so part of their land and their people are elsewhere. About 666,183 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 38; 1 more just touches the border (under 1% of their land)
Entirely inside: 19; 99% or more of their land
Shared with other counties: 19; Most with Ottawa County (8)
Most populated ZIP: 49508; 42,720 people · Kentwood
Least populated ZIP: 49326; 3,980 people
Largest ZIP by land: 49331; 92 sq mi · Lowell

Map of the ZIP codes in Kent 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 Kent County

38 ZIP codes in Kent County, MI, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
48809	Belding	11,038	20%	≈ 1,763
48815	Clarksville	2,364	2.0%	≈ 59
48838	Greenville	18,212	20%	≈ 3,149
49301	Forest Hills	19,846	100%	19,846
49302	—	9,754	99.7%	≈ 9,745
49306	—	11,028	100%	11,028
49315	Byron Center	27,091	72%	≈ 24,406
49316	Caledonia	26,427	79%	≈ 23,848
49318	Casnovia	1,604	3.9%	≈ 125
49319	Cedar Springs	18,802	100%	18,802
49321	Comstock Park	15,970	100%	15,970
49325	Freeport	2,596	9.7%	≈ 302
49326	—	3,980	60%	≈ 3,067
49330	Kent City	5,599	87%	≈ 5,081
49331	Lowell	17,661	78%	≈ 14,960
49333	Middleville	12,753	2.3%	≈ 372
49341	Rockford	39,409	100%	39,409
49343	Sand Lake	5,664	53%	≈ 3,593
49345	Sparta	13,512	100%	13,512
49347	Trufant	1,570	3.1%	≈ 110
49348	Wayland	13,699	2.0%	≈ 309
49403	—	2,467	4.1%	≈ 160
49418	Grandville	31,913	64%	≈ 26,195
49435	Lamont	3,831	1.6%	≈ 122
49503	Grand Rapids	39,489	100%	39,489
49504	Grand Rapids	40,036	100%	40,036
49505	Grand Rapids	32,426	100%	32,426
49506	Grand Rapids	34,673	100%	34,673
49507	Grand Rapids	38,487	100%	38,487
49508	Kentwood	42,720	100%	42,720
49509	Wyoming	28,152	100%	28,152
49512	Kentwood	18,373	100%	18,373
49519	Wyoming	27,965	100%	27,965
49525	Northview	30,887	100%	30,887
49534	Walker	23,719	50%	≈ 17,926
49544	Walker	9,631	96%	≈ 9,561
49546	Forest Hills	34,721	100%	34,721
49548	Wyoming	34,777	100%	34,777

They also touch the county with under 1% of their land, so they aren’t counted: 49327.

ZIP codes shared with other counties

These 19 ZIP codes have part of their land in another county. The first figure is the share of their land in Kent County; then, where the rest lies.

48809 (Belding): 20% here; 78% in Ionia County and 1.9% in Montcalm County.
48815 (Clarksville): 2.0% here; 98% in Ionia County.
48838 (Greenville): 20% here; 78% in Montcalm County and 1.5% in Ionia County.
49315 (Byron Center): 72% here; 18% in Ottawa County and 10% in Allegan County.
49316 (Caledonia): 79% here; 18% in Allegan County and 2.6% in Barry County.
49318 (Casnovia): 3.9% here; 73% in Muskegon County and 23% in Ottawa County.
49325 (Freeport): 9.7% here; 69% in Barry County and 21% in Ionia County.
49326: 60% here; 40% in Montcalm County.
49330 (Kent City): 87% here; 7.7% in Newaygo County, 3.8% in Ottawa County, and 1.1% in Muskegon County.
49331 (Lowell): 78% here; 22% in Ionia County.
49333 (Middleville): 2.3% here; 96% in Barry County and 1.3% in Allegan County.
49343 (Sand Lake): 53% here; 37% in Newaygo County and 10% in Montcalm County.
49347 (Trufant): 3.1% here; 97% in Montcalm County.
49348 (Wayland): 2.0% here; 91% in Allegan County and 6.8% in Barry County.
49403: 4.1% here; 89% in Ottawa County and 7.0% in Muskegon County.
49418 (Grandville): 64% here; 36% in Ottawa County.
49435 (Lamont): 1.6% here; 98% in Ottawa County.
49534 (Walker): 50% here; 50% in Ottawa County.
49544 (Walker): 96% here; 3.9% in Ottawa 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 Grand Rapids (5), Wyoming (3), Forest Hills (2), Kentwood (2), Walker (2), and Belding (1); 25 places in all.

They start with 4 different three-digit prefixes, one per USPS sorting center: 488, 493, 494, and 495.

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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