On February 12, 1812, the Ohio government authorized the creation of Medina County. It originally was a portion of the Connecticut Western Reserve. The county was named for the Arabian city of Medina, the former home of the Islamic faith's prophet Mohammed. Due to a large number of wild animals, in 1818, county residents participated in what became known as the "Great Hinckley Hunt." Six hundred men spent Christmas day hunting the local wildlife. The men consumed many of the animals that they killed. The rest froze, and once Spring arrived, the thawing animals attracted buzzards. Since 1819, buzzards return to Hinckley exactly upon March 15.
Medina County is located in northern Ohio and covers 422 square miles. The county has grown in recent years, as residents of nearby Cleveland in Cuyahoga County have moved to Medina and surrounding counties to escape the busyness of the city. Between 1990 and 2000, Medina County's population increased by 23.5 percent to a total of 151,095 residents in 2000. Medina is the county seat and Brunswick is the largest community in the county, with 34,255 residents in 2010. The county averages 358 residents per square mile.
Medina County is overwhelmingly rural, with only five percent of the county deemed to be urban, but most residents earn their livings by working in sales, service, or manufacturing positions. Farming ranks fifth. Beginning in the late 1860s, bee-keeping became a major industry in the county. The county's average income was almost twenty-nine thousand dollars per person in 1999, with 4.9 percent of the population living in poverty.
Most voters in Medina County claim to be independents, yet in recent years, they have overwhelmingly supported Republican candidates at the national level.
Michigan Governor Russell A. Alger and poet Edith Thomas were both residents of the county.