YOUNGSTOWN — The Mahoning Valley Historical Society is offering activities on its website starting today to commemorate the 175th anniversary of Mahoning County.

By going to mahoninghistory.org, a person can look at a section of blogs called “Time Capsules” and will find a new blog on the anniversary and some of the political machinations that came about to create Mahoning County on March 1, 1846.

Also today, on the historical society’s Facebook page (www.facebook.com/mahoninghistory/), viewers can see a regular feature called Mahoning Valley Artifacts that also will relate to the anniversary, H. William Lawson, executive director of the Mahoning Valley Historical Society, told the Mahoning County commissioners last week.

Mahoning County was created after the Ohio Legislature approved plans put forth by business and political leaders of Canfield to create the county out of the southern part of Trumbull County and northern part of Columbiana County that would establish Canfield as the seat of government. Canfield was in the geographical center of the new county.

Mahoning County’s first courthouse was completed in Canfield in 1848. But an 1873 ballot referendum approved moving the county seat to Youngstown, leading to the completion of the next courthouse at the corner of Wick Avenue and East Wood Street in Youngstown in 1876.

erunyan@tribtoday.com