As of 2026 the population of Clinton County, OH is 42,097. The population is expected to shrink to 42,081 by 2031 - a growth rate of -0.01%.
The median age of Clinton County, OH residents is 42.
The diversity index of Clinton County, OH is 21.8, meaning that there is a 22% chance that any two people selected out of 100 residents will be of different race or ethnicity from one another.
The average household income in Clinton County, OH is $90,685 and projected to be $102,289 in 2031. Per capita income is $36,311, projected to be $41,204 in 2031. 2.8% of households – 1,180 – have an income of $200,000 or higher. Average net worth is $930,315 and the average disposable income is $71,058.
There are 18,292 housing units in Clinton County, OH; 11,905 are owner-occupied, 4,854 are rented, and 1,533 are vacant. The average home value is $259,486, with 776 homes built in 2010 or later, and 3,051 built in 1939 or earlier.
There are 1,463 businesses in Clinton County, OH, employing 22,940 workers and pulling from a labor force of 19,431 age 16 and above. 7,009 workers commute into Clinton County, OH from outside the county or state. Key industries for the area include:
12,271 residents both live and work in/around Clinton County, OH. The average travel time is 24.6 minutes. 6.18% people have a commute of less than 5 minutes while 1.84% commute 90 minutes or more each way. Of commuters, 15,567 drive alone, 1,476 carpool, and 30 take public transportation. 737 use other modes of transport such as motorcycle, bicycle, walking, etc. 1,521 residents work from home.
11,993 members of the workforce hold a high school diploma or GED. 3,795 have associates degrees, 3,972 have bachelor’s degrees, and 1,996 hold a graduate or professional degree.
Source: ESRI, 2026-08-31
