[3] It is named for Charles Carroll of Carrollton, the last surviving signer of the Declaration of Independence.

30.1% were of German, 13.5% American, 13.3% Irish, 9.8% English, and 6.6% Italian ancestry according to Census 2000.

22.90% of all households were made up of individuals, and 10.40% had someone living alone who was 65 years of age or older.

As of the 2010 United States Census, there were 28,836 people, 11,385 households, and 8,067 families living in the county.

[17] In terms of ancestry, 29.2% were German, 14.4% were Irish, 11.3% were American, 9.8% were English, and 6.1% were Italian.

The only Democratic candidates to win the county were Woodrow Wilson in 1912, Lyndon B. Johnson in 1964, and Bill Clinton both in 1992 and 1996, but Jimmy Carter came within 85 votes of carrying it in 1976.

A celebration of Ohio's colonial history, the event focuses particularly on the region's Native American and French heritage, complete with a small herd of buffalo and battle reenactment.

Held 4 miles south of Carrollton on SR 332 at the Algonquin Mill - a pioneer village with one room schoolhouse, steam-powered saw and flour mills, as well as several other historic buildings.

Hand made arts and crafts are sold, along with flour milled during the festival, a pancake breakfast and chicken barbecue dinners.