Jefferson County Demographics

A map of Jefferson County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	30,012	30,023	91.0%	90.6%
Hispanic	1,148	1,111	3.5%	3.4%
Multiracial	903	1,018	2.7%	3.1%
Black	343	510	1.0%	1.5%
Native American/Other	322	195	1.0%	0.6%
Asian	270	290	0.8%	0.9%

Jefferson County, Indiana has an estimated population of 32,998, a less than 1% change from the 33,147 recorded in the 2020 Census. The population is 91.0% White, 3.5% Hispanic, 2.7% Multiracial, 1.0% Black, 1.0% Native American/Other, and 0.8% Asian. This demographic dot map shows the population of Jefferson County, with one dot drawn for each person counted by the Census, color-coded by race.

Jefferson has become slightly less racially diverse since the 2020 Census. It is considerably less diverse than Indiana overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Jefferson County, that probability was 17.7% in 2020 and 17.1% in the most recent ACS estimates.

Jefferson County is ranked the 51st most populous county in Indiana, out of 92 counties. Jefferson County was ranked the 50th most populous county in the 2020 Census.

Jefferson County's White Population

30,012 residents of Jefferson County, or 91.0% of the population, identify as White. The share of White residents in Jefferson County is significantly higher than in Indiana overall, where 75.4% of the population is White. Jefferson County ranks 50th statewide in terms of White residents as a share of the population, out of 92 counties.

Since the 2020 Census, Jefferson County's White population has remained roughly the same. White residents' share of Jefferson County's population has remained roughly unchanged at 91.0%.

Jefferson County is more White than neighboring Carroll County (85.6% White). Jefferson County is less White than neighboring Trimble County (92.2% White), Jennings County (92.8% White), Scott County (93.5% White), and Ripley County (94.2% White).

Jefferson County's Black Population

343 residents of Jefferson County, or 1.0% of the population, identify as Black. The share of Black residents in Jefferson County is lower than in Indiana overall, where 9.1% of the population is Black. Jefferson County ranks 34th statewide in terms of Black residents as a share of the population, out of 92 counties.

Since the 2020 Census, Jefferson County's Black population has declined by an estimated 32.7%. Black residents' share of Jefferson County's population has decreased from 1.5% to 1.0%.

Jefferson County is more Black than neighboring Jennings County (0.3% Black), Scott County (0.4% Black), and Ripley County (0.7% Black). Jefferson County is less Black than neighboring Trimble County (1.1% Black), and Carroll County (2.2% Black).

Jefferson County's Asian Population

270 residents of Jefferson County, or 0.8% of the population, identify as Asian. The share of Asian residents in Jefferson County is comparable to the share in Indiana overall, where 2.6% of the population is Asian. Jefferson County ranks 27th statewide in terms of Asian residents as a share of the population, out of 92 counties.

Since the 2020 Census, Jefferson County's Asian population has declined by an estimated 6.9%. Asian residents' share of Jefferson County's population has remained roughly unchanged at 0.8%.

Jefferson County is more Asian than neighboring Trimble County (0.3% Asian), Jennings County (0.5% Asian), Scott County (0% Asian), Carroll County (0% Asian), and Ripley County (0.5% Asian).

Jefferson County's Hispanic Population

1,148 residents of Jefferson County, or 3.5% of the population, identify as Hispanic. The share of Hispanic residents in Jefferson County is lower than in Indiana overall, where 8.6% of the population is Hispanic. Jefferson County ranks 47th statewide in terms of Hispanic residents as a share of the population, out of 92 counties.

Since the 2020 Census, Jefferson County's Hispanic population has grown by an estimated 3.3%. Hispanic residents' share of Jefferson County's population has remained roughly unchanged at 3.5%.

Jefferson County is more Hispanic than neighboring Trimble County (3% Hispanic), Scott County (2.6% Hispanic), and Ripley County (2% Hispanic). Jefferson County is less Hispanic than neighboring Carroll County (7.5% Hispanic).

Jefferson County's Native American/Other Population

322 residents of Jefferson County, or 1.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Jefferson County is comparable to the share in Indiana overall, where 0.5% of the population is Native American/Other. Jefferson County ranks 20th statewide in terms of Native American/Other residents as a share of the population, out of 92 counties.

Since the 2020 Census, Jefferson County's Native American/Other population has grown by an estimated 65.1%. Native American/Other residents' share of Jefferson County's population has remained roughly unchanged at 1.0%.

Jefferson County is more Native American/Other than neighboring Trimble County (0.9% Native American/Other), Jennings County (0.5% Native American/Other), Carroll County (0.6% Native American/Other), and Ripley County (0.4% Native American/Other). Jefferson County is less Native American/Other than neighboring Scott County (1.1% Native American/Other).

Jefferson County's Multiracial Population

903 residents of Jefferson County, or 2.7% of the population, identify as Multiracial. The share of Multiracial residents in Jefferson County is comparable to the share in Indiana overall, where 3.8% of the population is Multiracial. Jefferson County ranks 46th statewide in terms of Multiracial residents as a share of the population, out of 92 counties.

Since the 2020 Census, Jefferson County's Multiracial population has declined by an estimated 11.3%. Multiracial residents' share of Jefferson County's population has remained roughly unchanged at 2.7%.

Jefferson County is more Multiracial than neighboring Trimble County (2.6% Multiracial), Jennings County (2.5% Multiracial), Scott County (2.4% Multiracial), and Ripley County (2.2% Multiracial). Jefferson County is less Multiracial than neighboring Carroll County (4% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.