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Jefferson County, Missouri
Jefferson County is located in the eastern portion of the U.S. state of Missouri. It is a part of the St. Louis Metropolitan Area. As of the 2020 census, the population was 226,739, making it the sixth-most populous county in Missouri. Its county seat is Hillsboro. The county was organized in 1818 and named in honor of former president Thomas Jefferson. In 1980, according to the U.S. census held that year, the county contained the mean center of U.S. population. Notably, this was the first census in which the center of population was west of the Mississippi River. Jefferson County is part of the St. Louis Metropolitan Statistical Area and encompasses many of the city's southern suburbs.
According to the U.S. Census Bureau, the county has a total area of 664 square miles (1,720 km2), of which 657 square miles (1,700 km2) is land and 7.7 square miles (20 km2) (1.2%) is water. The county's eastern border is the Mississippi River.
As of the 2020 census, the county had a population of 226,739 and a median age of 40.3 years. 23.1% of residents were under the age of 18 and 16.2% of residents were 65 years of age or older. For every 100 females there were 99.1 males, and for every 100 females age 18 and over there were 97.1 males age 18 and over.
The racial makeup of the county was 90.4% White, 1.0% Black or African American, 0.3% American Indian and Alaska Native, 0.8% Asian, 0.0% Native Hawaiian and Pacific Islander, 0.8% from some other race, and 6.6% from two or more races. Hispanic or Latino residents of any race comprised 2.4% of the population.
65.2% of residents lived in urban areas, while 34.8% lived in rural areas.
There were 86,959 households in the county, of which 32.4% had children under the age of 18 living with them and 21.7% had a female householder with no spouse or partner present. About 22.9% of all households were made up of individuals and 9.7% had someone living alone who was 65 years of age or older.
There were 92,385 housing units, of which 5.9% were vacant. Among occupied housing units, 80.5% were owner-occupied and 19.5% were renter-occupied. The homeowner vacancy rate was 1.3% and the rental vacancy rate was 7.9%.
As of the 2010 census, Jefferson County had a population of 218,733. The reported ethnic and racial make up of the population was 95.4% non-Hispanic white, 0.8% African-American, 0.3% Native American, 0.6% Asian, 0.4% reporting some other race, 1.3% reporting two or more races and 1.6% Hispanic or Latino of any race.
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Jefferson County, Missouri
Jefferson County is located in the eastern portion of the U.S. state of Missouri. It is a part of the St. Louis Metropolitan Area. As of the 2020 census, the population was 226,739, making it the sixth-most populous county in Missouri. Its county seat is Hillsboro. The county was organized in 1818 and named in honor of former president Thomas Jefferson. In 1980, according to the U.S. census held that year, the county contained the mean center of U.S. population. Notably, this was the first census in which the center of population was west of the Mississippi River. Jefferson County is part of the St. Louis Metropolitan Statistical Area and encompasses many of the city's southern suburbs.
According to the U.S. Census Bureau, the county has a total area of 664 square miles (1,720 km2), of which 657 square miles (1,700 km2) is land and 7.7 square miles (20 km2) (1.2%) is water. The county's eastern border is the Mississippi River.
As of the 2020 census, the county had a population of 226,739 and a median age of 40.3 years. 23.1% of residents were under the age of 18 and 16.2% of residents were 65 years of age or older. For every 100 females there were 99.1 males, and for every 100 females age 18 and over there were 97.1 males age 18 and over.
The racial makeup of the county was 90.4% White, 1.0% Black or African American, 0.3% American Indian and Alaska Native, 0.8% Asian, 0.0% Native Hawaiian and Pacific Islander, 0.8% from some other race, and 6.6% from two or more races. Hispanic or Latino residents of any race comprised 2.4% of the population.
65.2% of residents lived in urban areas, while 34.8% lived in rural areas.
There were 86,959 households in the county, of which 32.4% had children under the age of 18 living with them and 21.7% had a female householder with no spouse or partner present. About 22.9% of all households were made up of individuals and 9.7% had someone living alone who was 65 years of age or older.
There were 92,385 housing units, of which 5.9% were vacant. Among occupied housing units, 80.5% were owner-occupied and 19.5% were renter-occupied. The homeowner vacancy rate was 1.3% and the rental vacancy rate was 7.9%.
As of the 2010 census, Jefferson County had a population of 218,733. The reported ethnic and racial make up of the population was 95.4% non-Hispanic white, 0.8% African-American, 0.3% Native American, 0.6% Asian, 0.4% reporting some other race, 1.3% reporting two or more races and 1.6% Hispanic or Latino of any race.