Your Guide to Madison County, Ohio
Looking for trusted businesses, services and local resources in Madison County, Ohio? FindItOhio.com helps residents and visitors discover local companies, professionals and community information across Madison County, including London, the county seat.
Quick answer: Madison County is one of Ohio’s 88 counties. Its county seat is London, it was established in 1810, and it has an estimated 46,985 residents as of 2025.
At a Glance
- County seat: London
- Established: Mar 1, 1810
- Formed from: Franklin County
- Named for: James Madison (1751 to 1836), fourth President of the United States
- Estimated population (2025): 46,985
- Total area: 465.44 sq mi
- FIPS code: 39097
About Madison County
Madison County is a county located in the central portion of the U.S. state of Ohio. As of the 2020 census, the population was 43,824. Its county seat is London. The county is named for James Madison, President of the United States and was established on March 1, 1810. Madison County is part of the Columbus, OH Metropolitan Statistical Area.
History of Madison County
In 1850, Madison County contained 24 churches and one newspaper office, had a total population of 10,015, and the county’s public school system had 3838 pupils. With agriculture as the primary business, that same year the county produced 726,451 bushels of corn, 19,308 tons of hay, 120,696 pounds of wool, and 128,948 pounds of butter. In 1900, the county had a population of 20,590.
In November 1949, the remains of a Mastodon were discovered at Orleton Farms in Madison County, approximately 11.5 mi (18.5 km) northwest of West Jefferson. The discovery was made when workmen were locating a clogged drain on the farm with an iron rod. The farm reported the findings to the Ohio Historical Society, who then sent out a team to recover the bones. Later, in January of 1952, five different articles were released detailing the Orleton Mastodon and multiple experts’ interpretations of the findings.
In 2008, Madison County, which spans Interstates 70 and 71 as they converge on Columbus, was cited by the Ohio State Highway Patrol as leading the state for the most speeding tickets 20 mph or more over the posted limit. Despite a population of around 42,000 in 2006, over 7,700 such tickets were issued in three years. Three of Madison County’s 18 fatal crashes in 2006 and 2007 occurred on interstates. Madison County is also home to the Ohio Peace Officer Training Academy, the Ohio Bureau of Criminal Identification & Investigation, and several prison facilities.
Cities and Villages in Madison County
Cities
London â€
Villages
Midway, Mount Sterling, Plain City, South Solon, West Jefferson
Find Local Businesses in Madison County
Browse the FindItOhio.com business directory to find restaurants, contractors, professional services, shops and more serving Madison 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 Madison 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 Madison County, Ohio?
London is the county seat of Madison County, Ohio.
When was Madison County established?
Madison County was established on Mar 1, 1810. It was formed from Franklin County.
Who or what is Madison County named for?
Madison County is named for James Madison (1751 to 1836), fourth President of the United States.
How many people live in Madison County, Ohio?
Madison County has an estimated population of 46,985 as of 2025.
What cities are in Madison County, Ohio?
Cities in Madison County include London †.
Where can I find local businesses in Madison County?
Search the FindItOhio.com business directory to find local businesses and services in Madison County, Ohio.
How do I list my Madison County business on FindItOhio.com?
Visit the free business listing page on FindItOhio.com and submit your business name, address, phone number and website.
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County background adapted from the Wikipedia article Madison County, Ohio, available under the Creative Commons Attribution ShareAlike 4.0 license.