Your Guide to Fairfield County, Ohio
Looking for trusted businesses, services and local resources in Fairfield County, Ohio? FindItOhio.com helps residents and visitors discover local companies, professionals and community information across Fairfield County, including Lancaster, the county seat.
Quick answer: Fairfield County is one of Ohio’s 88 counties. Its county seat is Lancaster, it was established in 1800, and it has an estimated 169,752 residents as of 2025.
At a Glance
- County seat: Lancaster
- Established: Dec 9, 1800
- Formed from: Ross and Washington Counties
- Named for: Named for the beauty of its “fair fields”
- Estimated population (2025): 169,752
- Total area: 505.11 sq mi
- FIPS code: 39045
About Fairfield County
Fairfield County is located in the U.S. state of Ohio. As of the 2020 census, the population was 158,921. Its county seat and largest city is Lancaster. Its name is a reference to the Fairfield area of the original Lancaster. Fairfield County is part of the Columbus, OH Metropolitan Statistical Area.
History of Fairfield County
Fairfield County originally encompassed all or parts of present day Knox, Hocking, Licking, Perry, and Pickaway Counties. Fairfield is a descriptive name referring to the beauty of their fields.
Cities and Villages in Fairfield County
Cities
Canal Winchester, Columbus ‡, Lancaster †, Pickerington, Reynoldsburg
Villages
Amanda, Baltimore, Bremen, Buckeye Lake, Carroll, Lithopolis, Millersport, Pleasantville, Rushville, Stoutsville, Sugar Grove, Tarlton, Thurston, West Rushville
Find Local Businesses in Fairfield County
Browse the FindItOhio.com business directory to find restaurants, contractors, professional services, shops and more serving Fairfield 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 Fairfield 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 Fairfield County, Ohio?
Lancaster is the county seat of Fairfield County, Ohio.
When was Fairfield County established?
Fairfield County was established on Dec 9, 1800. It was formed from Ross and Washington Counties.
Who or what is Fairfield County named for?
Fairfield County is named for Named for the beauty of its “fair fields”.
How many people live in Fairfield County, Ohio?
Fairfield County has an estimated population of 169,752 as of 2025.
What cities are in Fairfield County, Ohio?
Cities in Fairfield County include Canal Winchester, Columbus ‡, Lancaster †, Pickerington, Reynoldsburg.
Where can I find local businesses in Fairfield County?
Search the FindItOhio.com business directory to find local businesses and services in Fairfield County, Ohio.
How do I list my Fairfield 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 Fairfield County, Ohio, available under the Creative Commons Attribution ShareAlike 4.0 license.