What is the largest city in Genesee County, MI?

Flint is the largest city or town in Genesee County, with about 80,175 residents.

How many ZIP codes are in Genesee County?

Genesee County includes 23 ZIP Code Tabulation Areas, including 48411, 48420, 48423, 48433, 48436.

What is the population of Genesee County, MI?

About 403,305 people live in Genesee County, based on American Community Survey 5-year estimates.

What counties border Genesee County?

Genesee County borders Oakland County, Livingston County, Saginaw County, Lapeer County, Shiawassee County, Tuscola County.

Genesee County, MI: Cities, ZIP Codes & Local Data

Population

403,305

Land area

637sq mi

People per sq mi

633

ZIP codes

23

Genesee County at a glance

Genesee County is about 3.6 times as dense as Michigan as a whole.
It is the 5th most populous of 83 counties in Michigan.
Households here earn a median of $62,281 a year, 15% less than the Michigan figure of $72,875.
A typical owner-occupied home is valued at $182,400 (21% below Michigan) and median rent is $989 a month.
The biggest population centers are Flint (80,175), Burton (29,500) and Fenton (11,906).

Local data for Genesee County, MI

Counts from official public data

Housing and community stats

Genesee County, MI, American Community Survey 2020-2024

Full profile

Median household income

$62,281

Poverty rate

16.4%

Median home value

$182,400

Prices +5.0% in a year

Median rent

$989/mo

Homeownership

70.7%

Bachelor's or higher

23.3%

Median age

40.6

Average commute

26.9 min

Largest reported origins and ancestries: German Americans (65,218), Irish Americans (44,446), Polish Americans (20,813).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

5.1%

Sep 2026, -0.5 pts in a year

Average annual pay

$57,658

134,908 jobs, 2025

Income per person

$53,595

BEA, 2024

Federal spending

$2.8B

FY 2026, $6,791 per person

PPP loans

$676M

9,466 loans, 84,873 jobs reported

Campaign donations

$1.7M

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Genesee County, MI, workers 16 and older. American Community Survey 5-year estimates

Drove alone78.5%
Carpooled9.1%
Public transit0.9%
Walked0.9%
Bicycle0.1%
Taxi, ride-hailing, motorcycle or other0.7%
Worked from home9.9%

Average one-way commute: 26.9 minutes for people who do not work from home.

Environment and hazard risk

Genesee County, MI, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Moderate

Top: tornado

Storm events since 1996

750

Most often thunderstorm wind

Flood insurance policies

330

0.2% of homes, county

July high / Jan low

82° / 16°F

32.0 inches of rain a year

Hazards, floods and storm history Check a flood zone 59 historic places

Health statistics

Share of adults in Genesee County, MI, CDC PLACES estimates

All 40 measures

Obesity

40.6%

U.S. 33.3% +7.3 pts

Diabetes

13.2%

U.S. 12.1% +1.1 pts

Smoking

17.0%

U.S. 12.8% +4.2 pts

Uninsured (18-64)

7.3%

U.S. 11.1% -3.8 pts

Cities, towns and ZIP codes in Genesee County

Population shown

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Frequently asked questions

What is the largest city in Genesee County, MI?: Flint is the largest city or town in Genesee County, with about 80,175 residents.
How many ZIP codes are in Genesee County?: Genesee County includes 23 ZIP Code Tabulation Areas, including 48411, 48420, 48423, 48433, 48436.
What is the population of Genesee County, MI?: About 403,305 people live in Genesee County, based on American Community Survey 5-year estimates.
What counties border Genesee County?: Genesee County borders Oakland County, Livingston County, Saginaw County, Lapeer County, Shiawassee County, Tuscola County.