Your Guide to Adams County, Ohio
Looking for trusted businesses, services and local resources in Adams County, Ohio? FindItOhio.com helps residents and visitors discover local companies, professionals and community information across Adams County, including West Union, the county seat.
Quick answer: Adams County is one of Ohio’s 88 counties. Its county seat is West Union, it was established in 1797, and it has an estimated 27,865 residents as of 2025.
At a Glance
- County seat: West Union
- Established: Jul 10, 1797
- Formed from: Hamilton County
- Named for: John Adams (1735 to 1826), President of the United States when the county was organized
- Estimated population (2025): 27,865
- Total area: 583.91 sq mi
- FIPS code: 39001
About Adams County
Adams County is a county in the U.S. state of Ohio. As of the 2020 census, the population was 27,477. Its county seat and largest village is West Union. The county is named after John Adams, the second President of the United States.
Cities and Villages in Adams County
Villages
Manchester, Peebles, Rome, Seaman, West Union †, Winchester
Find Local Businesses in Adams County
Browse the FindItOhio.com business directory to find restaurants, contractors, professional services, shops and more serving Adams 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 Adams 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 Adams County, Ohio?
West Union is the county seat of Adams County, Ohio.
When was Adams County established?
Adams County was established on Jul 10, 1797. It was formed from Hamilton County.
Who or what is Adams County named for?
Adams County is named for John Adams (1735 to 1826), President of the United States when the county was organized.
How many people live in Adams County, Ohio?
Adams County has an estimated population of 27,865 as of 2025.
What cities are in Adams County, Ohio?
Adams County has no incorporated cities. Its communities include Manchester, Peebles, Rome, Seaman, West Union †, Winchester.
Where can I find local businesses in Adams County?
Search the FindItOhio.com business directory to find local businesses and services in Adams County, Ohio.
How do I list my Adams 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 Adams County, Ohio, available under the Creative Commons Attribution ShareAlike 4.0 license.