What is the largest city in Lake County, OH?

Mentor is the largest city or town in Lake County, with about 47,171 residents.

How many ZIP codes are in Lake County?

Lake County includes 8 ZIP Code Tabulation Areas, including 44045, 44057, 44060, 44077, 44081.

What is the population of Lake County, OH?

About 232,216 people live in Lake County, based on American Community Survey 5-year estimates.

What counties border Lake County?

Lake County borders Cuyahoga County, Ashtabula County, Geauga County.

Lake County, OH: Cities, ZIP Codes & Local Data

Population

232,216

Land area

229sq mi

People per sq mi

1,012

ZIP codes

8

Lake County at a glance

Lake County is about 3.5 times as dense as Ohio as a whole.
It is the 11th most populous of 88 counties in Ohio.
Households here earn a median of $80,925 a year, 13% more than the Ohio figure of $71,389.
A typical owner-occupied home is valued at $214,100 and median rent is $1,113 a month.
The biggest population centers are Mentor (47,171), Willoughby (24,046) and Painesville (20,548).

Local data for Lake County, OH

Counts from official public data

Housing and community stats

Lake County, OH, American Community Survey 2020-2024

Full profile

Median household income

$80,925

Poverty rate

8.3%

Median home value

$214,100

Prices +4.9% in a year

Median rent

$1,113/mo

Homeownership

75.8%

Bachelor's or higher

31.6%

Median age

44.1

Average commute

23.1 min

Largest reported origins and ancestries: German Americans (50,612), Irish Americans (40,155), Italian Americans (31,766).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

1.8%

Sep 2026, -1.2 pts in a year

Average annual pay

$61,587

99,690 jobs, 2025

Income per person

$66,609

BEA, 2024

Federal spending

$1.6B

FY 2026, $7,078 per person

PPP loans

$612M

6,387 loans, 72,815 jobs reported

Campaign donations

$1.2M

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

Lake County, OH, workers 16 and older. American Community Survey 5-year estimates

Drove alone76.5%
Carpooled7.3%
Public transit0.5%
Walked1.1%
Bicycle0.2%
Taxi, ride-hailing, motorcycle or other0.8%
Worked from home13.6%

Average one-way commute: 23.1 minutes for people who do not work from home.

Environment and hazard risk

Lake County, OH, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: winter weather

Storm events since 1996

553

Most often thunderstorm wind

Flood insurance policies

407

0.4% of homes, county

July high / Jan low

82° / 24°F

40.5 inches of rain a year

Hazards, floods and storm history Check a flood zone 72 historic places

Health statistics

Share of adults in Lake County, OH, CDC PLACES estimates

All 40 measures

Obesity

36.9%

U.S. 33.3% +3.6 pts

Diabetes

12.9%

U.S. 12.1% +0.8 pts

Smoking

14.5%

U.S. 12.8% +1.7 pts

Uninsured (18-64)

7.1%

U.S. 11.1% -4.0 pts

Cities, towns and ZIP codes in Lake County

Population shown

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Frequently asked questions

What is the largest city in Lake County, OH?: Mentor is the largest city or town in Lake County, with about 47,171 residents.
How many ZIP codes are in Lake County?: Lake County includes 8 ZIP Code Tabulation Areas, including 44045, 44057, 44060, 44077, 44081.
What is the population of Lake County, OH?: About 232,216 people live in Lake County, based on American Community Survey 5-year estimates.
What counties border Lake County?: Lake County borders Cuyahoga County, Ashtabula County, Geauga County.