|Motto: "Where Rivers And People Meet"|
|• Total||2.3 sq mi (5.8 km2)|
|• Land||2.2 sq mi (5.8 km2)|
|• Water||0.0 sq mi (0.0 km2)|
|Elevation||482 ft (147 m)|
|• Density||1,715.4/sq mi (662.3/km2)|
|Time zone||Eastern (EST) (UTC-5)|
|• Summer (DST)||EDT (UTC-4)|
|ZIP codes||41008, 41045|
|GNIS feature ID||0488982|
Carrollton is located at . The city is situated on the Ohio River at the mouth of the Kentucky River.(38.677329, -85.171504)
According to the United States Census Bureau, the city has a total area of 2.3 square miles (6.0 km2), of which 2.2 square miles (5.7 km2) is land and 0.44% is water.
Carrollton was laid out in 1792, and it was known as Port William initially. It served as the county seat of Gallatin County until 1838 when the county was split, creating Carroll County, and Port William was renamed Carrollton and became the seat of the new county. The Louisville & Nashville Railroad was built near town in 1868 and eventually became more important to the town's economy than river traffic.
It has one of the state's largest tobacco markets, and the population has remained steady since being recorded at 3,884 in the 1970 census. In 1988, the Carrollton bus disaster garnered national attention for what was one of the worst bus collisions in United States history.
As of the census of 2000, there were 3,846 people, 1,598 households, and 987 families residing in the city. The population density was 1,715.4 people per square mile (662.9/km²). There were 1,709 housing units at an average density of 762.3 per square mile (294.6/km²). The racial makeup of the city was 78.99% White, 2.24% (U.S. Census), 0.13% Native American, 0.18% Asian, 2.03% from other races, and 1.43% from two or more races. Hispanic or Latino of any race were 19.42% of the population.
There were 1,598 households out of which 27.7% had children under the age of 18 living with them, 43.0% were married couples living together, 14.7% had a female householder with no husband present, and 38.2% were non-families. 33.9% of all households were made up of individuals and 16.2% had someone living alone who was 65 years of age or older. The average household size was 2.29 and the average family size was 2.90.
In the city the population was spread out with 23.0% under the age of 18, 9.9% from 18 to 24, 27.3% from 25 to 44, 22.1% from 45 to 64, and 17.7% who were 65 years of age or older. The median age was 38 years. For every 100 females there were 95.4 males. For every 100 females age 18 and over, there were 90.2 males.
The median income for a household in the city was $29,818, and the median income for a family was $41,193. Males had a median income of $32,563 versus $20,000 for females. The per capita income for the city was $14,376. About 13.9% of families and 20.2% of the population were below the poverty line, including 31.5% of those under age 18 and 26.2% of those age 65 or over.
The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Carrollton has a humid subtropical climate, abbreviated "Cfa" on climate maps. 
- "Find a County". National Association of Counties. Retrieved 2011-06-07.
- "US Gazetteer files: 2010, 2000, and 1990". United States Census Bureau. 2011-02-12. Retrieved 2011-04-23.
- Kenny, Daniel (1875). "Illustrated Cincinnati". Stevens. p. 26. Retrieved 2013-05-19.
- Schrage, Robert (2006). "Along the Ohio River: Cincinnati to Louisville". Arcadia Publishing. p. 47. Retrieved 23 October 2013.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- Climate Summary for Carrollton, Kentucky