DeKalb County, Tennessee Information
|DeKalb County, Tennessee|
Dekalb County Courthouse in Smithville
Location within the U.S. state of Tennessee
Tennessee's location within the U.S.
|Named for||Johann de Kalb |
|• Total||329 sq mi (852 km2)|
|• Land||304 sq mi (787 km2)|
|• Water||25 sq mi (65 km2), 7.5%|
|• ( 2010)||18,723|
|• Density||62/sq mi (24/km2)|
|Time zone||Central: UTC−6/ −5|
DeKalb County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 18,723.  Its county seat is Smithville.  The county was created by the General Assembly of Tennessee on December 2, 1837 and was named for Revolutionary War hero Major General Johann de Kalb. 
DeKalb County was formed in 1837 from land in Cannon, Warren and White counties. Historian believes that the first settlers in the county were at Liberty and came from Maryland in 1797.  If so, Addison Puckett was the first settler. He may have come over the Cumberland Mountains, although some sources claim he came down the Ohio, up the Cumberland to Nashville, and then overland about 56 miles. 
DeKalb County was the site of several saltpeter mines, the main ingredient of gunpowder, and was obtained by leaching the earth from several local caves. Overall Cave was named for Abraham Overall who moved from Luray, Virginia, and settled near the present site of Liberty in 1805. He reportedly had many slaves and owned a large plantation on which Overall Cave is located. Two saltpeter leaching vats in the cave may date from the War of 1812, although this area was mined again during the Civil War. Other caves in DeKalb County that were mined for saltpeter include Avant Cave, located near Dowelltown, Indian Grave Point Cave, located in the Dry Creek Valley, and Temperance Saltpeter Cave, located near Temperance Hall. 
- Putnam County (northeast)
- White County (east)
- Warren County (south)
- Cannon County (southwest)
- Wilson County (west)
- Smith County (northwest)
- Edgar Evins State Park
- Pea Ridge Wildlife Management Area
|U.S. Decennial Census
1790-1960  1900-1990 
1990-2000  2010-2014 
As of the census  of 2000, there were 17,423 people, 6,984 households, and 4,986 families residing in the county. The population density was 57 people per square mile (22/km²). There were 8,409 housing units at an average density of 28 per square mile (11/km²). The racial makeup of the county was 95.58% White, 1.43% Black or African American, 0.28% Native American, 0.14% Asian, 0.02% Pacific Islander, 1.62% from other races, and 0.94% from two or more races. 3.63% of the population were Hispanic or Latino of any race.
There were 6,984 households out of which 30.10% had children under the age of 18 living with them, 56.10% were married couples living together, 11.10% had a female householder with no husband present, and 28.60% were non-families. 25.50% of all households were made up of individuals and 10.70% had someone living alone who was 65 years of age or older. The average household size was 2.45 and the average family size was 2.90.
In the county, the population was spread out with 23.30% under the age of 18, 8.50% from 18 to 24, 29.30% from 25 to 44, 24.60% from 45 to 64, and 14.30% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 97.70 males. For every 100 females age 18 and over, there were 94.90 males.
The median income for a household in the county was $30,359, and the median income for a family was $36,920. Males had a median income of $29,483 versus $20,953 for females. The per capita income for the county was $17,217. About 11.80% of families and 17.00% of the population were below the poverty line, including 20.00% of those under age 18 and 20.10% of those age 65 or over.
- Smithville (county seat)
- Thomas G. Webb, " Dekalb County," Tennessee Encyclopedia of History and Culture. Retrieved: 26 June 2013.
- "State & County QuickFacts". United States Census Bureau. Archived from the original on July 9, 2011. Retrieved November 29, 2013.
- "Find a County". National Association of Counties. Archived from the original on 2011-05-31. Retrieved 2011-06-07.
- Gannett, Henry (1905). The Origin of Certain Place Names in the United States. Govt. Print. Off. p. 103.
- Hale, Will T. History of Dekalb County, Tennessee. Nashville, P. Hunter, 1915. 254 pp. (reprinted McMinnville, B. Lomond Press, 1969).
- Thomas C. Barr, Jr., "Caves of Tennessee", Bulletin 64 of the Tennessee Division of Geology, 1961, 568 pages.
- "2010 Census Gazetteer Files". United States Census Bureau. August 22, 2012. Retrieved April 4, 2015.
- "Population and Housing Unit Estimates". Retrieved June 9, 2017.
- "U.S. Decennial Census". United States Census Bureau. Archived from the original on May 12, 2015. Retrieved April 4, 2015.
- "Historical Census Browser". University of Virginia Library. Retrieved April 4, 2015.
- Forstall, Richard L., ed. (March 27, 1995). "Population of Counties by Decennial Census: 1900 to 1990". United States Census Bureau. Retrieved April 4, 2015.
- "Census 2000 PHC-T-4. Ranking Tables for Counties: 1990 and 2000" (PDF). United States Census Bureau. April 2, 2001. Retrieved April 4, 2015.
- Based on 2000 census data
- "American FactFinder". United States Census Bureau. Archived from the original on 2013-09-11. Retrieved 2011-05-14.
- Leip, David. "Dave Leip's Atlas of U.S. Presidential Elections". uselectionatlas.org. Retrieved 2018-03-10.
|Wikimedia Commons has media related to DeKalb County, Tennessee.|
- Official site
- Smithville-DeKalb County Chamber of Commerce
- DeKalb County Schools
- DeKalb County, TNGenWeb – genealogy resources
- DeKalb County at Curlie