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St. Clair County, Alabama facts for kids

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St. Clair County
St. Clair County Courthouse in Pell City
St. Clair County Courthouse in Pell City
Flag of St. Clair County
Flag
Map of Alabama highlighting St. Clair County
Location within the U.S. state of Alabama
Map of the United States highlighting Alabama
Alabama's location within the U.S.
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Country  United States
State  Alabama
Founded November 20, 1818
Named for Arthur St. Clair
Seat Ashville & Pell City
Largest city Pell City
Area
 • Total 654 sq mi (1,690 km2)
 • Land 632 sq mi (1,640 km2)
 • Water 22 sq mi (60 km2)  3.3%
Population
 (2020)
 • Total 91,103
 • Density 139.30/sq mi (53.78/km2)
Time zone UTC−6 (Central)
 • Summer (DST) UTC−5 (CDT)
Congressional district 3rd
  • County Number 59 on Alabama Licence Plates

St. Clair County is a county located in the central portion of the U.S. state of Alabama. As of the 2020 census, the population was 91,103. It has two county seats: Ashville and Pell City. It is one of two counties in Alabama, and one of 33 in the United States, with more than one county seat. Its name is in honor of General Arthur St. Clair, an officer in the French and Indian War. St. Clair County is included in the Birmingham-Hoover, Alabama Metropolitan Statistical Area.

Demographics

Historical population
Census Pop.
1820 4,166
1830 5,975 43.4%
1840 5,638 −5.6%
1850 6,829 21.1%
1860 11,013 61.3%
1870 9,360 −15.0%
1880 14,462 54.5%
1890 17,353 20.0%
1900 19,425 11.9%
1910 20,715 6.6%
1920 23,383 12.9%
1930 24,510 4.8%
1940 27,336 11.5%
1950 26,687 −2.4%
1960 25,388 −4.9%
1970 27,956 10.1%
1980 41,205 47.4%
1990 50,009 21.4%
2000 64,742 29.5%
2010 83,593 29.1%
2020 91,103 9.0%
U.S. Decennial Census
1790–1960 1900–1990
1990–2000 2010–2020

At the 2000 census there were 64,742 people, 24,143 households, and 18,445 families living in the county. The population density was 102 people per square mile (39/km2). There were 27,303 housing units at an average density of 43 per square mile (17/km2). The racial makeup of the county was 90.03% White, 8.13% Black or African American, 0.37% Native American, 0.17% Asian, 0.03% Pacific Islander, 0.41% from other races, and 0.85% from two or more races. 1.06% of the population were Hispanic or Latino of any race. In 2000 the largest ancestry groups in St. Clair county were:

Of the 24,143 households 35.10% had children under the age of 18 living with them, 62.80% were married couples living together, 10.00% had a female householder with no husband present, and 23.60% were non-families. 20.80% of households were one person and 8.20% were one person aged 65 or older. The average household size was 2.60 and the average family size was 3.01.

The age distribution was 25.40% under the age of 18, 7.90% from 18 to 24, 30.70% from 25 to 44, 24.30% from 45 to 64, and 11.70% 65 or older. The median age was 36 years. For every 100 females, there were 101.80 males. For every 100 females age 18 and over, there were 98.80 males.

The median household income was $37,285 and the median family income was $43,152. Males had a median income of $33,914 versus $24,433 for females. The per capita income for the county was $17,960. About 9.60% of families and 12.10% of the population were below the poverty line, including 15.20% of those under age 18 and 12.60% of those age 65 or over.

2010 census

At the 2010 census there were 83,593 people, 31,624 households, and 23,364 families living in the county. The population density was 132 people per square mile (51/km2). There were 35,541 housing units at an average density of 56 per square mile (22/km2). The racial makeup of the county was 88.2% White, 8.6% Black or African American, 0.3% Native American, 0.6% Asian, 0.1% Pacific Islander, 0.9% from other races, and 1.3% from two or more races. 2.1% of the population were Hispanic or Latino of any race. Of the 31,624 households 30.7% had children under the age of 18 living with them, 58.3% were married couples living together, 11.2% had a female householder with no husband present, and 26.1% were non-families. 22.5% of households were one person and 8.5% were one person aged 65 or older. The average household size was 2.58 and the average family size was 3.02.

The age distribution was 23.7% under the age of 18, 7.8% from 18 to 24, 27.8% from 25 to 44, 27.6% from 45 to 64, and 13.1% 65 or older. The median age was 38.6 years. For every 100 females, there were 100.5 males. For every 100 females age 18 and over, there were 102.3 males.

The median household income was $48,837 and the median family income was $56,107. Males had a median income of $43,287 versus $32,843 for females. The per capita income for the county was $22,192. About 8.3% of families and 10.6% of the population were below the poverty line, including 13.2% of those under age 18 and 9.5% of those age 65 or over.

Transportation

Major highways

Rail

  • Alabama and Tennessee River Railway
  • Norfolk Southern Railway
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