|Tallapoosa County and the state of Alabama|
|• Total||16 sq mi (41.4 km2)|
|• Land||16 sq mi (41.4 km2)|
|• Water||0 sq mi (0 km2)|
|Elevation||728 ft (222 m)|
|• Density||200.8/sq mi (77.6/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|GNIS feature ID||0117010|
Dadeville was named for Major Francis Langhorne Dade, who died in the Seminole War in 1835. The town was granted a charter in 1837 and was first incorporated in 1858, lost its charter during the Civil War, and was incorporated a second time in 1878. Dadeville has been the Tallapoosa County seat since 1838.
Dadeville was home to the Graefenberg Medical Institute, Alabama's first medical school, which operated from 1852 until the outbreak of the Civil War; attempts to rehabilitate the school after the war failed, and the building burned in 1873.
Dadeville is located at .(32.832059, -85.764288)
According to the U.S. Census Bureau, the city has a total area of 16.0 square miles (41 km2), all land.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Dadeville has a humid subtropical climate, abbreviated "Cfa" on climate maps.
As of the census of 2000, there were 3,212 people, 1,122 households, and 813 families residing in the city. The population density was 200.7 people per square mile (77.5/km2). There were 1,278 housing units at an average density of 79.9 per square mile (30.8/km2). The racial makeup of the city was 53.24% White, 45.08% Black or African American, 0.25% Native American, 0.28% Asian, 0.37% from other races, and 0.78% from two or more races. 0.81% of the population were Hispanic or Latino of any race.
There were 1,122 households out of which 34.9% had children under the age of 18 living with them, 45.2% were married couples living together, 22.9% had a female householder with no husband present, and 27.5% were non-families. 24.8% of all households were made up of individuals and 10.5% had someone living alone who was 65 years of age or older. The average household size was 2.57 and the average family size was 3.05.
In the city the population was spread out with 25.4% under the age of 18, 8.7% from 18 to 24, 26.7% from 25 to 44, 20.5% from 45 to 64, and 18.7% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 85.3 males. For every 100 females age 18 and over, there were 81.0 males.
The median income for a household in the city was $25,266, and the median income for a family was $31,512. Males had a median income of $24,500 versus $20,781 for females. The per capita income for the city was $14,178. About 18.1% of families and 19.3% of the population were below the poverty line, including 25.6% of those under age 18 and 21.7% of those age 65 or over.
- Mark Barnes, prominent New York attorney.
- Charles Allen Culberson, 21st Governor of Texas; U.S. Senator from Texas.
- Thomas W. Herren, Lieutenant General, U.S. Army, World War II and Korean War.
- Johnson J. Hooper, author. Hooper lived in Dadeville while serving as circuit solicitor in the courts in Dadeville. Here he made many of his notes for his stories. Dadeville is home to "Simon Suggs", a fictional character immortalized by Hooper's book Adventures of Simon Suggs and the Tallapoosa Volunteers and Other Stories.
- Andrew R. Johnson (1856–1933), Louisiana state senator from 1916–1924 and mayor of Homer in the 1910s, was born in Dadeville.
- J. Frank Norris, fundamentalist pastor in Texas. Norris was born in Dadeville in 1877, but moved to Hill County, Texas in the late 1880s.
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- The Heritage of Tallapoosa County, Alabama copyright 2000. <http://www.dadeville.com> Accessed July 15, 2010
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- Climate Summary for Dadeville, Alabama
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "Texas Governor Charles Allen Culberson". National Governors Association. Retrieved November 2013.