How many people live in Harrison County, OH?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 14,000 people living in Harrison County, OH. That makes Harrison County the 85th-most populous county in Ohio. It is home to 0.12% of people living in the state.
14K
population of Harrison County, OH (2024)
0.12%
County share of the Ohio population (2024)
About 14,000 people lived in Harrison County, OH in 2024.
Population estimates, 2000–2024
What are Harrison County, OH’s age demographics?
About 3,400 Harrison County residents are aged 65 and older in 2024. That represents 24.1% of its population. For comparison, the age group represents 19.1% of Ohio’s population and 18% in the US overall.
Another 2,900 Harrison County residents, or 20.4% of the population, were children under 18. For comparison, the age group represents 21.7% of Ohio’s population and 21.6% in the US overall.
A higher share of Harrison County, OH's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Harrison County, OH’s racial and ethnic demographics?
Non-Hispanic white residents make up 94.1% of the Harrison County, OH population, higher than the national share of 57.5%.
In contrast, Harrison County’s Hispanic population accounts for 1.3%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 2% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Harrison County, OH has a higher share of a non-Hispanic white population than Ohio as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Harrison County, OH is Cadiz with about 3,000 residents in 2024.
Cities and towns in Harrison County, OH ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Cadiz | 2,950 |
| 2. | Hopedale | 899 |
| 3. | German | 707 |
| 4. | Scio | 646 |
| 5. | Washington | 594 |
| 6. | Jewett | 532 |
| 7. | Stock | 429 |
| 8. | Moorefield | 385 |
| 9. | Bowerston | 348 |
| 10. | Freeport | 313 |
Keep exploring
Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
