Your Guide to Mahoning County, Ohio
Looking for trusted businesses, services and local resources in Mahoning County, Ohio? FindItOhio.com helps residents and visitors discover local companies, professionals and community information across Mahoning County, including Youngstown, the county seat.
Quick answer: Mahoning County is one of Ohio’s 88 counties. Its county seat is Youngstown, it was established in 1846, and it has an estimated 224,706 residents as of 2025.
At a Glance
- County seat: Youngstown
- Established: Mar 1, 1846
- Formed from: Columbiana and Trumbull Counties
- Named for: Mahoning River, from a Lenape word meaning “at the licks”
- Estimated population (2025): 224,706
- Total area: 415.25 sq mi
- FIPS code: 39099
About Mahoning County
Mahoning County is located in the U.S. state of Ohio. As of the 2020 census, the population was 228,614. Its county seat and largest city is Youngstown. The county is named after the Mahoning River and was formed on March 1, 1846; the 83rd county in Ohio.
Present day Mahoning County was part of Trumbull and Columbiana counties until 1846, when the counties were redefined and Mahoning County was established as a new county. Mahoning County is part of the Youngstown, Warren, OH Metropolitan Statistical Area.
History of Mahoning County
In the year 1600, Mahoning County was likely divided between two nations of Native Americans, the Erie people in the east and the Whittlesey culture in the west. It is unknown where the actual boundaries between these cultures lay, though the nearest confirmed Whittlesey settlement was at Cleveland and the nearest confirmed Erie settlement was just barely across the Ohio Pennsylvania border, in Ashtabula County. The Erie were an Iroquoian people who likely arrived sometime between the years 1100 to 1300 AD, after chasing out an older nation of “Mound Builders.” The Whittlesey were likely Algonquian, but lived in longhouses rather than the traditional Algonquian wigwams.
Following the Beaver Wars, when the Iroquois Confederacy declared war on many of the tribes of the Great Lakes region over several decades and destroyed them, new tribes moved into this area. The tribes who shared the resources of the Mahoning Valley included the Seneca, Lenape (Delaware), Shawnee, and Wyandot. The Seneca and Wyandot were Iroquoians, and the Lenape and Shawnee were Algonquians. As northeast Ohio later came to be under control of the settlers as part of the Connecticut Western Reserve, all tribes were pushed further westward or southward, before eventually being removed from Ohio by the United States in the early mid 1800s.
Cities and Villages in Mahoning County
Cities
Alliance, Campbell, Canfield, Columbiana, Salem, Struthers
Villages
Beloit, Craig Beach, Lowellville, New Middletown, Poland, Sebring, Washingtonville
Find Local Businesses in Mahoning County
Browse the FindItOhio.com business directory to find restaurants, contractors, professional services, shops and more serving Mahoning 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 Mahoning 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 Mahoning County, Ohio?
Youngstown is the county seat of Mahoning County, Ohio.
When was Mahoning County established?
Mahoning County was established on Mar 1, 1846. It was formed from Columbiana and Trumbull Counties.
Who or what is Mahoning County named for?
Mahoning County is named for Mahoning River, from a Lenape word meaning “at the licks”.
How many people live in Mahoning County, Ohio?
Mahoning County has an estimated population of 224,706 as of 2025.
What cities are in Mahoning County, Ohio?
Cities in Mahoning County include Alliance, Campbell, Canfield, Columbiana, Salem, Struthers.
Where can I find local businesses in Mahoning County?
Search the FindItOhio.com business directory to find local businesses and services in Mahoning County, Ohio.
How do I list my Mahoning 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 Mahoning County, Ohio, available under the Creative Commons Attribution ShareAlike 4.0 license.