Medina County is a county located in the U.S. state of Ohio. According to the 2010 census, it has a population of 172,332, which is an increase of 14.1% from 151,095 in 2000. The 2004 projected population was estimated at 165,370. Its county seat is Medina, and it is named for Medina in Saudi Arabia, though the "I" in it is pronounced instead to rhyme with "dine.".

Medina County is part of the Cleveland–Elyria–Mentor Metropolitan Statistical Area.

According to the 2010 census, the county has a total area of 423.02 square miles (1,095.6 km²), of which 421.36 square miles (1,091.3 km²) (or 99.61%) is land and 1.66 square miles (4.3 km²) (or 0.39%) is water.

As of the census of 2000, there were 151,095 people, 54,542 households, and 42,215 families residing in the county. The population density was 358 people per square mile (138/km²). There were 56,793 housing units at an average density of 135 per square mile (52/km²). The racial makeup of the county was 97.26% White, 0.88% Black or African American, 0.15% Native American, 0.64% Asian, 0.02% Pacific Islander, 0.25% from other races, and 0.80% from two or more races. 0.93% of the population were Hispanic or Latino of any race. 26.8% were of German, 11.5% Irish, 8.6% Italian, 8.4% English, 8.4% Polish and 7.8% American ancestry according to Census 2000. 95.3% spoke English, 1.2% Spanish and 1.0% German as their first language.

Medina (/mɛˈdiːnə/; Arabic: اَلْمَدِينَة اَلْمَنَوَّرَة‎, al-Madīnah al-Munawwarah, “the radiant city” (officially), or اَلْمَدِينَة al-Madīnah; also transliterated as Madinah, or madinat al-nabi "the city of the prophet") is a city in the Hejaz region of western Saudi Arabia, and serves as the capital of the Al Madinah Province. It is the second holiest city in Islam, and the burial place of the Islamic Prophet Muhammad. Medina is historically significant for being Muhammad's home after the Hijrah. Before the advent of Islam, the city was known as Yathrib, but was personally renamed by Muhammad.

Medina is home to the three oldest mosques in Islam, namely Al-Masjid an-Nabawi (The Prophet's Mosque), Quba Mosque (the first mosque in Islam's history), and Masjid al-Qiblatain (the mosque where the qibla was switched to Mecca).

Because of the Saudi government's religious policy and concern that historic sites could become the focus for idolatry, much of Medina's Islamic physical heritage has been destroyed since the beginning of Saudi rule.^{[citation needed]}

Ohio (ⁱ/oʊˈhaɪ.oʊ/) is a state in the Midwestern United States. Ohio is the 34th most extensive, the 7th most populous, and the 10th most densely populated of the 50 United States. The state's capital and largest city is Columbus.

The name "Ohio" originated from Iroquois word ohi-yo’, meaning "great river". The state, originally partitioned from the Northwest Territory, was admitted to the Union as the 17th state (and the first under the Northwest Ordinance) on March 1, 1803. Although there are conflicting narratives regarding the origin of the nickname, Ohio is historically known as the "Buckeye State" (relating to the Ohio buckeye tree) and Ohioans are also known as "Buckeyes".

The government of Ohio is composed of the executive branch, led by the Governor; the legislative branch, which comprises the Ohio General Assembly; and the judicial branch, which is led by the Supreme Court. Currently, Ohio occupies 18 seats in the United States House of Representatives. Ohio is known for its status as both a swing state and a bellwether in national elections.