What is the largest city in Ross County, OH?

Chillicothe is the largest city or town in Ross County, with about 21,902 residents.

How many ZIP codes are in Ross County?

Ross County includes 9 ZIP Code Tabulation Areas, including 43101, 43115, 45601, 45612, 45617.

What is the population of Ross County, OH?

About 76,492 people live in Ross County, based on American Community Survey 5-year estimates.

What counties border Ross County?

Ross County borders Pickaway County, Highland County, Jackson County, Fayette County, Hocking County, Pike County, Vinton County.

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

Population

76,492

Land area

689sq mi

People per sq mi

111

ZIP codes

9

Ross County at a glance

Ross County is 62% less dense than Ohio as a whole.
The median household income is $61,303, 14% below the Ohio median of $71,389.
A typical owner-occupied home is valued at $171,500 (20% below Ohio) and median rent is $906 a month.
Its largest cities are Chillicothe (21,902), Frankfort (1,171) and Kingston (703).

Local data for Ross County, OH

Counts from official public data

Housing and community stats

Ross County, OH, American Community Survey 2020-2024

Full profile

Median household income

$61,303

Poverty rate

15.7%

Median home value

$171,500

Prices +5.1% in a year

Median rent

$906/mo

Homeownership

69.6%

Bachelor's or higher

17.4%

Median age

41.1

Average commute

26.4 min

Largest reported origins and ancestries: German Americans (14,609), Irish Americans (8,695), Italian Americans (1,868).

Home values and rents Income, education and commute

Economy and federal money

Jobs, income, federal spending and pandemic loans

Details

Unemployment rate

4.2%

Sep 2026, -1.7 pts in a year

Average annual pay

$59,197

28,735 jobs, 2025

Income per person

$48,854

BEA, 2024

Federal spending

$491M

FY 2026, $6,368 per person

PPP loans

$91.3M

1,422 loans, 13,300 jobs reported

Campaign donations

$123K

Itemized, 2026 cycle

Economy Federal spending PPP loans

How people get to work

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

Drove alone83.4%
Carpooled9.6%
Public transit0.0%
Walked1.3%
Bicycle0.0%
Taxi, ride-hailing, motorcycle or other0.5%
Worked from home5.2%

Average one-way commute: 26.4 minutes for people who do not work from home.

Environment and hazard risk

Ross County, OH, from FEMA, NOAA and EPA

Full report

Natural hazard risk

Relatively Low

Top: landslide

Storm events since 1996

539

Most often thunderstorm wind

Flood insurance policies

80

0.3% of homes, county

July high / Jan low

85° / 21°F

Hazards, floods and storm history Check a flood zone 22 historic places

Health statistics

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

All 40 measures

Obesity

44.3%

U.S. 33.3% +11.0 pts

Diabetes

15.0%

U.S. 12.1% +2.9 pts

Smoking

19.8%

U.S. 12.8% +7.0 pts

Uninsured (18-64)

9.3%

U.S. 11.1% -1.8 pts

Cities, towns and ZIP codes in Ross County

Population shown

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Frequently asked questions

What is the largest city in Ross County, OH?: Chillicothe is the largest city or town in Ross County, with about 21,902 residents.
How many ZIP codes are in Ross County?: Ross County includes 9 ZIP Code Tabulation Areas, including 43101, 43115, 45601, 45612, 45617.
What is the population of Ross County, OH?: About 76,492 people live in Ross County, based on American Community Survey 5-year estimates.
What counties border Ross County?: Ross County borders Pickaway County, Highland County, Jackson County, Fayette County, Hocking County, Pike County, Vinton County.