Lexington County, South Carolina
Lexington County Courthouse in October 2013
In God We Trust
Location within the U.S. state of South Carolina
South Carolina's location within the U.S.
|Named for||Battle of Lexington and Concord|
|• Total||758 sq mi (1,960 km2)|
|• Land||699 sq mi (1,810 km2)|
|• Water||59 sq mi (150 km2) 7.8%%|
| • Estimate |
|• Density||350/sq mi (130/km2)|
|Time zone||UTC−5 ( Eastern)|
|• Summer ( DST)||UTC−4 ( EDT)|
Lexington County is a county located in the U.S. state of South Carolina. As of the 2010 census, the population was 262,391,  and the 2019 population estimate was 298,750.  Its county seat and largest town is Lexington.  The county was chartered in 1785  and was named in commemoration of Lexington, Massachusetts, the site of the Battle of Lexington in the American Revolutionary War.  Lexington County is the sixth-largest county in South Carolina and is part of the Columbia, SC Metropolitan Statistical Area.
According to the U.S. Census Bureau, the county has a total area of 758 square miles (1,960 km2), of which 699 square miles (1,810 km2) is land and 59 square miles (150 km2) (7.8%) is water.  The largest body of water is Lake Murray, while other waterways include the Broad River, the Saluda River and the Congaree River. Lexington County has urban, suburban, and rural landscapes. Much of the county's urbanization is in its eastern and northeastern areas.
- Richland County - east
- Orangeburg County - southeast
- Calhoun County - southeast
- Aiken County - southwest
- Saluda County - west
- Newberry County - northwest
Lexington County averages 48 inches of rain per year; the U.S. average is 37. The average snowfall is 2 inches; the U.S. average is 25 inches. The average number of days with any measurable precipitation is 104.
On average, there are 218 sunny days per year in Lexington County. The July high is around 92 degrees and the January low is 33. The comfort index, which is based on humidity during the warmest months, is a 29 out of 100, where higher is more comfortable. The U.S. average on the comfort index is 44. 
|U.S. Decennial Census
1790-1960  1900-1990 
1990-2000  2010-2019 
As of the census  of 2000, there were 216,014 people, 83,240 households, and 59,849 families living in the county. The population density was 309 people per square mile (119/km2). There were 90,978 housing units at an average density of 130 per square mile (50/km2). The racial makeup of the county was 84.18% White, 12.63% Black or African American, 0.34% Native American, 1.05% Asian, 0.04% Pacific Islander, 0.79% from other races, and 0.98% from two or more races. 1.92% of the population were Hispanic or Latino of any race.
There were 83,240 households out of which 35.50% had children under the age of 18 living with them, 56.60% were married couples living together, 11.60% had a female householder with no husband present, and 28.10% were non-families. 22.50% of all households were made up of individuals and 6.90% had someone living alone who was 65 years of age or older. The average household size was 2.56 and the average family size was 3.01.
In the county, the population was spread out with 26.10% under the age of 18, 8.30% from 18 to 24, 31.60% from 25 to 44, 23.80% from 45 to 64, and 10.20% who were 65 years of age or older. The median age was 36 years. For every 100 females, there were 94.50 males. For every 100 females age 18 and over, there were 91.30 males.
The median income for a household in the county was $44,659, and the median income for a family was $52,637. Males had a median income of $36,435 versus $26,387 for females. The per capita income for the county was $21,063. About 6.40% of families and 9.00% of the population were below the poverty line, including 11.10% of those under age 18 and 9.30% of those age 65 or over.
As of the 2010 United States Census, there were 262,391 people, 102,733 households, and 70,952 families living in the county.  The population density was 375.4 inhabitants per square mile (144.9/km2). There were 113,957 housing units at an average density of 163.0 per square mile (62.9/km2).  The racial makeup of the county was 79.3% white, 14.3% black or African American, 1.4% Asian, 0.4% American Indian, 2.7% from other races, and 1.9% from two or more races. Those of Hispanic or Latino origin made up 5.5% of the population.  In terms of ancestry, 17.2% were German, 14.0% were American, 12.5% were English, and 11.8% were Irish. 
Of the 102,733 households, 34.5% had children under the age of 18 living with them, 51.4% were married couples living together, 13.0% had a female householder with no husband present, 30.9% were non-families, and 24.9% of all households were made up of individuals. The average household size was 2.53 and the average family size was 3.01. The median age was 37.9 years. 
The median income for a household in the county was $52,205 and the median income for a family was $64,630. Males had a median income of $44,270 versus $34,977 for females. The per capita income for the county was $26,393. About 8.5% of families and 11.1% of the population were below the poverty line, including 15.7% of those under age 18 and 8.4% of those age 65 or over. 
|Type||Name||Pop. (2019 est.)||Notes|
|City||Cayce||14,009||Partly in Richland County|
|City||Columbia||[a]||Mostly in Richland County|
|Town||Irmo||12,483||Partly in Richland County|
|Town||Batesburg-Leesville||5,415||Partly in Saluda County|
|Public school district name||Enrollment||Employees||Schools|
|Lexington School District One ||27,300||3,900||31|
|Lexington School District Two ||8,947||900||12|
|Lexington School District Three ||2,000||350||4|
|Lexington School District Four||3,350||300||7|
|Lexington & Richland County School District Five [b]||16,680||1,500||21|
|Midlands Technical College [c]||15,000 ||3|
|Public libraries||Visitors (counted once)||Branches|
|Lexington County Public Library System||160,336 ||10|
Public transportation in Lexington County is provided by the COMET, or officially the Central Midlands Regional Transit Authority (CMRTA). The bus system is the main public transit system for the greater Columbia area. In Lexington County, the bus system runs in the areas of West Columbia, Cayce, Irmo, Springdale, Seven Oaks, and Harbison. Additionally, COMET offers Dial-a-ride transit (DART), which provides personalized service passengers with disabilities. COMET no longer offers services to the town of Lexington. 
The Columbia Metropolitan Airport serves as the main airport system for the greater Columbia area. In 2018, the airport served 1,197,603 passengers with 12,324 flight. Additionally, the airport is also the regional hub for UPS Airlines, transporting 136.7 million pounds of freight/mail in 2018.  The airport was named Lexington County Airport, and during World War II, trained pilots for B-25 Mitchell crews.
- I-26 Interstate 26 travels from northwest to southeast and connects the Columbia area to the other two major population centers of South Carolina: the Greenville-Spartanburg area in the northwestern part of the state and North Charleston – Charleston area in the southeastern part of the state.
- I-20 Interstate 20 travels from west to east and connects Columbia to Atlanta and Augusta in the west and Florence in the east. It serves the nearby towns and suburbs of Pelion, Lexington, West Columbia, Sandhill, Pontiac, and Elgin. Interstate 20 is also used by travelers heading to Myrtle Beach, although the interstate's eastern terminus is in Florence.
- I-77 Interstate 77 begins in Lexington county and ends in Cleveland, Ohio and is frequently used by travelers on the east coast heading to or from Florida.
- Lake Murray
- Riverbanks Zoo [d]
- Riverbanks Botanical Garden
- Riverbanks Waterfall Junction and waterpark
- Lexington County Museum
- Lake Murray Dam
- Lexington County Baseball Stadium
- Cayce-West Columbia Riverwalk
- Fourteen-mile Creek Trail
- Columbiana Centre
|1||Lexington Medical Center||6,450|
|2||Lexington School District 1||3,550|
|5||Lexington School District Five||2,354|
|9||County of Lexington||1,741|
|10||Lexington School District 2||1,267|
On November 4, 2014, Lexington County residents voted against a proposed sales tax increase. The money generated from this tax would have mostly been used to improve traffic conditions upon roadways.  Likewise on November 4, 2014, residents voted to repeal a ban on alcohol sales on Sundays within the county. 
Politics in Lexington County are largely controlled by the Republican Party. The last Democrat to carry the county at a presidential level was Franklin D. Roosevelt in 1944. In the 2016 Presidential election, Lexington County voted 65.55% in favor of Republican Donald Trump and 28.86 percent in favor of Democrat Hillary Clinton.
In other elections, Lexington County is similarly Republican. It has supported the Republican party for governor in every election since 1982 when Richard Riley carried every county in the state,  although as late as 2006 Tommy Moore did manage 44 percent of the vote.  The last Democratic senatorial nominee to pass 30 percent of the county's ballots was Inez Tenenbaum in 2004, and no Democratic nominee has won the county for this office since Ernest "Fritz" Hollings did so in 1980: in 1986 it was the only county to support Hollings' GOP opponent Henry McMaster. 
- Birch County, South Carolina, a proposed county that would include existing portions of Lexington County
- National Register of Historic Places listings in Lexington County, South Carolina
- A very small percentage of the city is in Lexington County. To add the 131,000 population numbers here would be misleading.
- Partly in Richland County
- 3 of 6 campuses are in Lexington County
- Partly in Richland County
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- The American Cyclopædia. 1879. .