Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/MI/COUNTY/LAKE

Lake County, MI ZIP codes

Lake County, MI has 6 ZIP codes, in 6 towns: 49304, 49644, 49402, 49656, 49623 and 49642. 1 more crosses into it from a neighbouring county: 49677.

The county seat is Baldwin.

ZIP codes
6
Partly in it
1 more
Towns
6
County seat
Baldwin
County FIPS
26085
Population
12,563
Median household income
$50,805
Land area
568 sq mi

Lake County ZIP codes by town

Baldwin (county seat)
49304

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

ZIP codes partly in Lake County

This ZIP code lies mostly in a neighbouring county but covers a twentieth or more of Lake County.

Map of Lake County ZIP codes

493044940249623496424964449656

The ZIP codes of Lake County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Lake County in numbers

About 12,563 people live in Lake County, in 5,190 households, the 72nd most populous of Michigan's 83 counties. The median household income is $50,805 a year, 30% below the Michigan median of $72,875 (US: $80,734). The median owner-occupied home is valued at $133,900 (42% below the Michigan median), and median gross rent is $875 a month. The median age is 50.5; 12.7% of adults 25 and over hold a bachelor's degree or higher (32.4% across Michigan); the average commute takes 34 minutes.

Population12,563Lake12,563
Households5,190Lake5,190
Median age50.5Lake50.5Michigan40.2US 38.9
Median household income$50,805Lake$50,805Michigan$72,875US $80,734
Median home value$133,900Lake$133,900Michigan$231,600US $332,700
Median gross rent$875Lake$875Michigan$1,129US $1,413
Bachelor's degree or higher12.7%Lake12.7%Michigan32.4%US 35.7%
Mean commute34.0 minLake34.0 minMichigan24.2 minUS 26.4 min
Population density22 / sq miLake22 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in Lake County

Largest towns in Lake County
TownZIP codesPopulation
Irons 1 1,715
Branch 1 1,411
Baldwin 1 1,261
Chase 1 986
Idlewild 1 985
Luther 1 303

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with Lake County.

Not sure you are in Lake County? What county am I in? answers from your location, near a county line included.

Every ZIP code in Lake County, with figures

ZIP codes in Lake County
ZIP City Type Population Median income Median home
49304 Baldwin , MI Standard 5,408 $45,991 $116,000
49402 Branch , MI Standard 1,411 $51,324 $169,800
49623 Chase , MI Standard 986 $60,147 $132,900
49642 Idlewild , MI Standard 985 $26,950 $116,100
49644 Irons , MI Standard 1,715 $54,013 $175,400
49656 Luther , MI Standard 1,908 $56,656 $135,500

Cite this page

zipcodes.pro. “Lake County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mi/county/lake

Underlying data is public domain or openly licensed — sources, vintages and licences.