|City of Columbia, Kentucky|
|• Mayor||Mark Harris|
|• City Attorney||Marshall Loy|
|• Governing body||Columbia Council|
|• Total||3.4 sq mi (8.9 km2)|
|• Land||3.4 sq mi (8.9 km2)|
|• Water||0.0 sq mi (0.0 km2)|
|Elevation||748 ft (228 m)|
|• Density||1,309.4/sq mi (505.6/km2)|
|Time zone||Central (CST) (UTC-6)|
|• Summer (DST)||CDT (UTC-5)|
|ZIP codes||42715, 42728, 42735|
|GNIS feature ID||0489885|
The area was settled c. 1802 by Daniel Trabue. The post office was opened on April 1, 1806, by John Field, who also ran the local store.
Columbia is located at .(37.100652, -85.306056)
According to the United States Census Bureau, the city has a total area of 3.4 square miles (8.8 km2), all land. Official revisions have been made to the total area of the city as at least eight annexations have occurred since November 4, 2004.
As of the census of 2010, there were 4,452 people, 1,637 households, and 898 families residing in the city. The population density was 1,309.4 per square mile (505.6 /km2). There were 1,884 housing units at an average density of 554.1 per square mile (213.9 /km2). The racial makeup of the city was 88.8% White, 7.7% African American, 0.2% Native American, 0.5% Asian, 0.1% Pacific Islander, 1.1% from other races, and 1.6% from two or more races. Hispanic or Latino of any race were 1.9% of the population.
There were 1,637 households out of which 22.8% had children under the age of 18 living with them, 35.2% were married couples living together, 15.3% had a female householder with no husband present, and 45.1% were non-families. 39.8% of all households were made up of individuals living alone and 18.7% had someone living alone who was 65 years of age or older. The average household size was 2.12 and the average family size was 2.79.
In the city the population was spread out with 16.7% under the age of 18, 15.4% from 20 to 24, 19.3% from 25 to 44, 20.4% from 45 to 64, and 17.6% who were 65 years of age or older. The median age was 31.3 years. For every 100 females there were 90.83 males. For every 100 females age 18 and over, there were 87.46 males.
The median income for a household in the city was $21,200, and the median income for a family was $40,547. Males had a median income of $31,667 versus $40,159 for females. The per capita income for the city was $13,466. About 16.3% of families and 24.5% of the population were below the poverty line, including 16.4% of those under age 18 and 29.3% of those age 65 or over.
Arts and culture
Events held in Columbia, Kentucky:
- Downtown Days, two-day festival on the streets of downtown Columbia. The event includes a parade, a beauty pageant, reenactment of the James/Younger Bank of Columbia robbery, 5-K run, pet show, train rides for the kids, kids carnival, face painting, inflatables, live entertainment, food, fun, clowns, choirs, and more.
- Adair County Elementary School (Kindergarten, 1st, 2nd, 3rd, 4th, 5th, & 6th Grade Students from County)
- Colonel William Casey School ( Pre-school, Kindergarten, 1st,& 2nd Grade Students from City)
- John Adair Intermediate School (3rd, 4th, & 5th Grade Students from City)
- Adair County Middle School (7th, & 8th Grade Students)
- Adair County High School (9th-12 Grade Students)
Colleges and universities
Lindsey Wilson College, a private four-year college.
Media in Columbia include:
- The Adair Progress, a local 2x weekly newspaper
- WHVE, a contemporary radio station
- WAIN, a country radio station
- Adair County Community Voice, a local once weekly newspaper complete with Public Records information
- Columbia Magazine, an online-only magazine updated daily with local news and history.
The Louie B. Nunn Cumberland Parkway runs through Columbia as it extends from Bowling Green to Somerset. This parkway is a future corridor of Interstate 66. The addition of an interchange with a 2006 reconstruction of Highway 61 South, Columbia now has two exits on the Parkway.
Exit 49, the original exit on the parkway, merges onto Highway 55 South (also known as Jamestown Street) bringing drivers through the middle of Columbia.
Exit 47, the new exit, merges onto Highway 61 South (also known as Burkesville Street/Road) and drivers can choose to go north or go to Burkesville to the south.
The Highway 55 Bypass was officially opened on October 7, 2008, for more information see below.
After years of promises by various governors and other Kentucky officials, construction began early in May 2007, which culminated in an official ground-breaking ceremony by the former Governor himself on May 15, 2007  near the front of the newly constructed Adair County Elementary School, which faces the direction of the bypass.
The Columbia Bypass was opened to the public on October 7, 2008 featuring a traffic light at the intersection of the bypass and North 55 as well as a traffic light at the intersection of South 61. The bypass has relieved a majority of the downtown traffic.
- Damon E. Allen - Columbia optometrist who led the move to permit optometrists to prescribe medication to their patients
- Elizabeth Arnold - Miss Kentucky (2002)
- Steve Hamilton- Major League Baseball pitcher (1935-1997)
- Vernie McGaha - Kentucky state senator from Adair County since 1997
- Marine Sergeant Dakota Meyer - In September 2011, he received the Medal of Honor from President Barack Obama at age 23; he saved numerous American and Afghan troops during a Taliban ambush and is the third living recipient of the honor (and first living Marine) from the Iraq and Afghan wars
- Doug Moseley - United Methodist clergyman and a member of the Kentucky State Senate from 1974–1987; former Columbia resident
- Frank Lane Wolford - U.S. Congressman (1883–1887)
- Lance Burton - an American stage magician.
- James Alexander Williamson - American Civil War Brevet Major General and Medal of Honor recipient.
Columbia, Kentucky was depicted in the film Resurrection Mary starring Wilford Brimley in 2002. The film was directed by another Columbia native, Matthew Eric Arnold as part of the USC School of Cinematic Arts graduate thesis program and won awards at the Big Bear Lake International Film Festival. The filming was featured on local news stations and in USA Today.
- "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.
- "American FactFinder". United States Census Bureau. Retrieved 2008-01-31.
- "Adair County Schools". Adair County Schools. Retrieved August 18, 2012.