Your Guide to Harrison County, Ohio
Looking for trusted businesses, services and local resources in Harrison County, Ohio? FindItOhio.com helps residents and visitors discover local companies, professionals and community information across Harrison County, including Cadiz, the county seat.
Quick answer: Harrison County is one of Ohio’s 88 counties. Its county seat is Cadiz, it was established in 1813, and it has an estimated 14,070 residents as of 2025.
At a Glance
- County seat: Cadiz
- Established: Feb 1, 1813
- Formed from: Jefferson and Tuscarawas Counties
- Named for: General William Henry Harrison (1773 to 1841), an officer of the War of 1812 and future President of the United States
- Estimated population (2025): 14,070
- Total area: 403.53 sq mi
- FIPS code: 39067
About Harrison County
Harrison County is a county located in the U.S. state of Ohio. As of the 2020 census, the population was 14,483, making it the fifth least populous county in Ohio. Its county seat and largest village is Cadiz. The county is named for General William Henry Harrison, who was later president of the United States.
History of Harrison County
Harrison County was formed from parts of Jefferson and Tuscarawas Counties in 1813. The county was named after General William Henry Harrison, the hero of the battle of Tippecanoe in the War of 1812 (and later the ninth U.S. president).
Oil was discovered near Jewett, Ohio in 1895, and then in the Scio, Ohio area in 1898. However, by 1901, the Scio oil boom had essentially ceased.
Cities and Villages in Harrison County
Villages
Adena, Bowerston, Cadiz †, Deersville, Freeport, Harrisville, Hopedale, Jewett, New Athens, Scio
Find Local Businesses in Harrison County
Browse the FindItOhio.com business directory to find restaurants, contractors, professional services, shops and more serving Harrison County. Own a business here? Add your free business listing so local customers can find you.
Background Checks, Process Serving and Private Investigations
Residents and employers in Harrison County can get BCI and FBI LiveScan fingerprinting, FD-258 fingerprint cards, process serving and licensed private investigations from these Ohio providers:
- Ohio Security & Investigations, Youngstown: licensed private investigations and fingerprinting. Call (888) 341-6960 or visit ohioinvestigators.com.
- 10-8 Protective Services, Columbus: investigations, fingerprinting and process serving. Call (800) 949-8521 or visit 10-8protectiveservices.com.
Frequently Asked Questions
What is the county seat of Harrison County, Ohio?
Cadiz is the county seat of Harrison County, Ohio.
When was Harrison County established?
Harrison County was established on Feb 1, 1813. It was formed from Jefferson and Tuscarawas Counties.
Who or what is Harrison County named for?
Harrison County is named for General William Henry Harrison (1773 to 1841), an officer of the War of 1812 and future President of the United States.
How many people live in Harrison County, Ohio?
Harrison County has an estimated population of 14,070 as of 2025.
What cities are in Harrison County, Ohio?
Harrison County has no incorporated cities. Its communities include Adena, Bowerston, Cadiz †, Deersville, Freeport, Harrisville, Hopedale, Jewett.
Where can I find local businesses in Harrison County?
Search the FindItOhio.com business directory to find local businesses and services in Harrison County, Ohio.
How do I list my Harrison County business on FindItOhio.com?
Visit the free business listing page on FindItOhio.com and submit your business name, address, phone number and website.
Looking for another county? Explore all 88 Ohio counties on FindItOhio.com.
County background adapted from the Wikipedia article Harrison County, Ohio, available under the Creative Commons Attribution ShareAlike 4.0 license.