[3] It was established on March 1, 1818, from parts of Fairfield, Washington and Muskingum counties.

The county is named for Oliver Hazard Perry, a hero of the War of 1812.

[4] Perry County is included in the Columbus, OH Metropolitan Statistical Area.

[5] As of the census[10] of 2000, there were 34,078 people, 12,500 households, and 9,350 families living in the county.

21.4% of all households were made up of individuals, and 9.9% had someone living alone who was 65 years of age or older.

As of the 2010 United States Census, there were 36,058 people, 13,576 households, and 9,738 families living in the county.

[11] In terms of ancestry, 25.4% were German, 14.9% were Irish, 10.4% were English, and 9.6% were American.

In 2020, Trump won the largest percentage of votes in the county of any Republican nominee since the party's founding.