Jefferson County Demographics

A map of Jefferson County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	57,055	56,545	88.4%	86.7%
Black	3,288	3,619	5.1%	5.5%
Multiracial	2,280	3,206	3.5%	4.9%
Hispanic	1,243	1,159	1.9%	1.8%
Asian	374	338	0.6%	0.5%
Native American/Other	278	382	0.4%	0.6%

Jefferson County, Ohio has an estimated population of 64,518, a slight decrease from the 65,249 recorded in the 2020 Census. The population is 88.4% White, 5.1% Black, 3.5% Multiracial, 1.9% Hispanic, 0.6% Asian, and 0.4% Native American/Other. 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 less racially diverse since the 2020 Census. It is considerably less diverse than Ohio 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 24.3% in 2020 and 21.4% in the most recent ACS estimates.

Jefferson County is ranked the 39th most populous county in Ohio, out of 88 counties. Jefferson County was ranked the 38th most populous county in the 2020 Census.

Jefferson County's White Population

57,055 residents of Jefferson County, or 88.4% of the population, identify as White. The share of White residents in Jefferson County is considerably higher than in Ohio overall, where 75.8% of the population is White. Jefferson County ranks 57th statewide in terms of White residents as a share of the population, out of 88 counties.

Since the 2020 Census, Jefferson County's White population has remained roughly the same. White residents' share of Jefferson County's population has increased from 86.7% to 88.4%.

Jefferson County is less White than neighboring Brooke County (92.4% White), Hancock County (92% White), Ohio County (89.8% White), Harrison County (93.7% White), and Carroll County (94.6% White).

Jefferson County's Black Population

3,288 residents of Jefferson County, or 5.1% of the population, identify as Black. The share of Black residents in Jefferson County is lower than in Ohio overall, where 12% of the population is Black. Jefferson County ranks 20th statewide in terms of Black residents as a share of the population, out of 88 counties.

Since the 2020 Census, Jefferson County's Black population has declined by an estimated 9.1%. Black residents' share of Jefferson County's population has remained roughly unchanged at 5.1%.

Jefferson County is more Black than neighboring Brooke County (1.5% Black), Hancock County (1.8% Black), Ohio County (3.3% Black), Harrison County (2.7% Black), and Carroll County (0.7% Black).

Jefferson County's Asian Population

374 residents of Jefferson County, or 0.6% of the population, identify as Asian. The share of Asian residents in Jefferson County is comparable to the share in Ohio overall, where 2.5% of the population is Asian. Jefferson County ranks 43rd statewide in terms of Asian residents as a share of the population, out of 88 counties.

Since the 2020 Census, Jefferson County's Asian population has grown by an estimated 10.7%. Asian residents' share of Jefferson County's population has remained roughly unchanged at 0.6%.

Jefferson County is more Asian than neighboring Hancock County (0.5% Asian), Ohio County (0.5% Asian), Harrison County (0.1% Asian), and Carroll County (0% Asian). Jefferson County is less Asian than neighboring Brooke County (0.7% Asian).

Jefferson County's Hispanic Population

1,243 residents of Jefferson County, or 1.9% of the population, identify as Hispanic. The share of Hispanic residents in Jefferson County is slightly lower than in Ohio overall, where 4.8% of the population is Hispanic. Jefferson County ranks 53rd statewide in terms of Hispanic residents as a share of the population, out of 88 counties.

Since the 2020 Census, Jefferson County's Hispanic population has grown by an estimated 7.2%. Hispanic residents' share of Jefferson County's population has remained roughly unchanged at 1.9%.

Jefferson County is more Hispanic than neighboring Brooke County (1.4% Hispanic), Hancock County (1.7% Hispanic), Ohio County (1.7% Hispanic), Harrison County (1.2% Hispanic), and Carroll County (1.3% Hispanic).

Jefferson County's Native American/Other Population

278 residents of Jefferson County, or 0.4% 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 Ohio overall, where 0.5% of the population is Native American/Other. Jefferson County ranks 22nd statewide in terms of Native American/Other residents as a share of the population, out of 88 counties.

Since the 2020 Census, Jefferson County's Native American/Other population has declined by an estimated 27.2%. Native American/Other residents' share of Jefferson County's population has remained roughly unchanged at 0.4%.

Jefferson County is more Native American/Other than neighboring Brooke County (0.1% Native American/Other), Ohio County (0.2% Native American/Other), Harrison County (0.1% Native American/Other), and Carroll County (0.3% Native American/Other). Jefferson County is less Native American/Other than neighboring Hancock County (0.5% Native American/Other).

Jefferson County's Multiracial Population

2,280 residents of Jefferson County, or 3.5% of the population, identify as Multiracial. The share of Multiracial residents in Jefferson County is comparable to the share in Ohio overall, where 4.3% of the population is Multiracial. Jefferson County ranks 9th statewide in terms of Multiracial residents as a share of the population, out of 88 counties.

Since the 2020 Census, Jefferson County's Multiracial population has declined by an estimated 28.9%. Multiracial residents' share of Jefferson County's population has decreased from 4.9% to 3.5%.

Jefferson County is more Multiracial than neighboring Harrison County (2.2% Multiracial), and Carroll County (3% Multiracial). Jefferson County is less Multiracial than neighboring Brooke County (4% Multiracial), and Ohio County (4.5% 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.