Bartholomew County is a county located in the U.S. state of Indiana. The population was 82,208 at the 2020 census. The county seat is Columbus. The county was determined by the U.S. Census Bureau to be home to the mean center of U.S. population in 1900.

Bartholomew County makes up the Columbus, Indiana Metropolitan Statistical Area, which is part of the Indianapolis-Carmel-Muncie Combined Statistical Area.

Bartholomew County was formed on February 12, 1821, and was named for Lt. Col. Joseph Bartholomew, wounded at the Battle of Tippecanoe. The site of the county seat was chosen on February 15, 1821, by a team of commissioners, who suggested the name Tiptona, in honor of John Tipton.

The current Bartholomew County courthouse was built from 1870 to 1874 by McCormack and Sweeney of Columbus at a cost of $225,000.

It was designed by architect Isaac Hodgson, who was born in Belfast, Ireland in 1826 and immigrated to the United States in 1848; he designed six Indiana courthouses, including the one in Henry County.

The courthouse is built largely of brick and has mansard roofs typical of the Second Empire French style. Its asymmetrical "L" shape allows it to face two major streets in Columbus. The inscription indicating the commissioners, architect and date is high up on the east facade.

Today the Bartholomew County Veterans Memorial designed by American architect Charles Rose sits adjacent to the Courthouse.

According to the 2010 census, the county has a total area of 409.52 square miles (1,060.7 km), of which 406.91 square miles (1,053.9 km) (or 99.36%) is land and 2.62 square miles (6.8 km) (or 0.64%) is water. Camp Atterbury occupies the northwestern corner of the county.

• Johnson County (northwest)
• Shelby County (northeast)
• Decatur County (east)
• Jennings County (southeast)
• Jackson County (south)
• Brown County (west)

• Columbus

• Clifford
• Edinburgh
• Elizabethtown
• Hartsville
• Hope
• Jonesville

• Taylorsville

• Kansas

• ColumBUS

• KBAK - Columbus Municipal Airport

• Louisville and Indiana Railroad

Columbus, Indiana
Climate chart (explanation)
J F M A M J J A S O N D     2.7     37 19     2.6     42 22     3.7     53 31     4.4     64 41     4.6     74 52     3.5     83 61     4     86 65     3.8     85 63     3.1     79 55     2.8     67 42     3.8     54 34     3.2     42 25 █ Average max. and min. temperatures in °F █ Precipitation totals in inches Source: The Weather Channel
Metric conversion J F M A M J J A S O N D     68     3 −7     67     6 −6     93     12 −1     111     18 5     118     23 11     88     28 16     102     30 18     95     29 17     78     26 13     71     19 6     96     12 1     80     6 −4 █ Average max. and min. temperatures in °C █ Precipitation totals in mm

In recent years, average temperatures in Columbus have ranged from a low of 19 °F (−7 °C) in January to a high of 86 °F (30 °C) in July, although a record low of −27 °F (−33 °C) was recorded in January 1912 and a record high of 111 °F (44 °C) was recorded in July 1934. Average monthly precipitation ranged from 2.63 inches (67 mm) in February to 4.63 inches (118 mm) in May.

Bartholomew County Sheriff's Department
Jurisdictional structure
Operations jurisdiction	Bartholomew, Indiana, United States
Legal jurisdiction	As per operations jurisdiction
General nature	Local civilian police
Operational structure
Agency executive	Chris Lane, Sheriff

The county government is a constitutional body, and is granted specific powers by the Constitution of Indiana, and by the Indiana Code.

County Council: The county council is the legislative branch of the county government and controls all the spending and revenue collection in the county. Representatives are elected from county districts. The council members serve four-year terms. They are responsible for setting salaries, the annual budget, and special spending. The council also has limited authority to impose local taxes, in the form of an income and property tax that is subject to state level approval, excise taxes, and service taxes.

Board of Commissioners: The executive body of the county is made of a board of commissioners. The commissioners are elected county-wide, in staggered terms, and each serves a four-year term. One of the commissioners, typically the most senior, serves as president. The commissioners are charged with executing the acts legislated by the council, collecting revenue, and managing the day-to-day functions of the county government.

Court: The county maintains a small claims court that can handle some civil cases. The judge on the court is elected to a term of four years and must be a member of the Indiana Bar Association. The judge is assisted by a constable who is also elected to a four-year term. In some cases, court decisions can be appealed to the state level circuit court.

County Officials: The county has several other elected offices, including sheriff, coroner, auditor, treasurer, recorder, surveyor, and circuit court clerk. Each of these elected officers serves a term of four years and oversees a different part of county government. Members elected to county government positions are required to declare a party affiliation and to be residents of the county.

Bartholomew County is part of Indiana's 6th congressional district and Indiana's 9th congressional district; Indiana Senate district 41; and Indiana House of Representatives districts 57, 59 and 65.

United States presidential election results for Bartholomew County, Indiana

Year	Republican		Democratic		Third party(ies)
	No.	%	No.	%	No.	%
2020	22,410	61.74%	12,934	35.63%	956	2.63%
2016	20,640	63.09%	9,841	30.08%	2,236	6.83%
2012	18,083	61.52%	10,625	36.15%	684	2.33%
2008	17,067	54.90%	13,567	43.64%	455	1.46%
2004	19,093	66.96%	9,191	32.23%	231	0.81%
2000	16,200	62.87%	9,015	34.98%	554	2.15%
1996	13,188	51.60%	9,301	36.39%	3,069	12.01%
1992	13,146	47.91%	8,284	30.19%	6,010	21.90%
1988	17,364	66.05%	8,804	33.49%	123	0.47%
1984	18,704	69.35%	8,075	29.94%	191	0.71%
1980	15,801	58.58%	9,260	34.33%	1,913	7.09%
1976	14,771	56.41%	11,203	42.78%	213	0.81%
1972	17,365	70.87%	6,974	28.46%	163	0.67%
1968	13,628	55.80%	8,268	33.85%	2,528	10.35%
1964	11,026	45.77%	12,940	53.72%	124	0.51%
1960	13,606	59.09%	9,290	40.35%	130	0.56%
1956	12,227	59.78%	8,134	39.77%	92	0.45%
1952	11,462	58.77%	7,844	40.22%	196	1.01%
1948	7,804	48.74%	7,960	49.71%	248	1.55%
1944	7,689	50.99%	7,139	47.34%	252	1.67%
1940	7,890	48.84%	8,180	50.63%	86	0.53%
1936	6,484	42.92%	8,536	56.50%	87	0.58%
1932	6,015	43.16%	7,533	54.05%	390	2.80%
1928	6,788	57.76%	4,881	41.53%	83	0.71%
1924	6,606	56.62%	4,760	40.80%	302	2.59%
1920	6,585	53.93%	5,420	44.39%	205	1.68%
1916	3,287	47.08%	3,441	49.29%	253	3.62%
1912	1,321	20.26%	3,147	48.26%	2,053	31.48%
1908	3,306	46.13%	3,637	50.75%	224	3.13%
1904	3,510	51.60%	3,038	44.66%	254	3.73%
1900	2,375	41.08%	3,300	57.07%	107	1.85%
1896	3,264	50.03%	3,198	49.02%	62	0.95%
1892	2,297	40.38%	3,217	56.56%	174	3.06%
1888	2,742	46.27%	3,109	52.46%	75	1.27%

Historical population

Census	Pop.	Note	%±
1830	5,476		—
1840	10,042		83.4%
1850	12,428		23.8%
1860	17,865		43.7%
1870	21,133		18.3%
1880	22,777		7.8%
1890	23,867		4.8%
1900	24,594		3.0%
1910	24,813		0.9%
1920	23,887		−3.7%
1930	24,864		4.1%
1940	28,276		13.7%
1950	36,108		27.7%
1960	48,198		33.5%
1970	57,022		18.3%
1980	65,088		14.1%
1990	63,657		−2.2%
2000	71,435		12.2%
2010	76,794		7.5%
2020	82,208		7.1%
2023 (est.)	84,003		2.2%
U.S. Decennial Census 1790-1960 1900-1990 1990-2000 2010-2013

As of the 2020 United States Census, there were 82,208 people and 31,452 households residing in the county. The population density was 188.7 inhabitants per square mile (72.9/km). There were 33,098 housing units at an average density of 81.3 per square mile (31.4/km). Per the 2020 census, the racial makeup of the county was 80.0% white, 6.6% Asian, 2.2% black or African American, 0.4% American Indian, 0.1% Pacific islander, 4.7% from other races, and 6.1% from two or more races. Those of Hispanic or Latino origin made up 8.8% of the population. In terms of ancestry, according the 2010 census, 28.5% were German, 12.4% were English, 12.2% were Irish, and 10.7% were American.

Of the 29,860 households in 2010, 34.6% had children under the age of 18 living with them, 54.1% were married couples living together, 10.7% had a female householder with no husband present, 30.4% were non-families, and 25.3% of all households were made up of individuals. The average household size was 2.53 and the average family size was 3.02. The median age was 38.2 years.

In 2010, the median income for a household in the county was $47,697 and the median income for a family was $64,024. Males had a median income of $50,358 versus $32,334 for females; the per capita income for the county was $26,860; and approximately 7.7% of families and 10.4% of the population were below the poverty line, including 15.8% of those under age 18 and 5.3% of those age 65 or over.

Public schools in Bartholomew County are administered by the Bartholomew Consolidated School Corporation and the Flat Rock-Hawcreek School Corporation. The county's first tuition-free public charter school, the International School of Columbus, a middle school/high school, opened in 2009–10. The ISC was an International Baccalaureate World School offering the Diploma Program. The ISC closed due to financial difficulties in the fall of 2013.

Ivy Tech Community College Columbus is located in Bartholomew County.

• The Republic, daily newspaper covering Bartholomew County
• National Register of Historic Places listings in Bartholomew County, Indiana

• Bartholomew County official website
• Bartholomew Consolidated School Corporation
• Flat Rock-Hawcreek School Corporation
• International School of Columbus

39°13′N 85°54′W / 39.21°N 85.90°W / 39.21; -85.90