Jo Daviess County Demographics

A map of Jo Daviess County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	20,080	20,354	91.9%	92.4%
Hispanic	912	856	4.2%	3.9%
Multiracial	474	526	2.2%	2.4%
Black	166	114	0.8%	0.5%
Asian	114	96	0.5%	0.4%
Native American/Other	105	89	0.5%	0.4%

Jo Daviess County, Illinois has an estimated population of 21,851, a less than 1% change from the 22,035 recorded in the 2020 Census. The population is 91.9% White, 4.2% Hispanic, 2.2% Multiracial, 0.8% Black, 0.5% Asian, and 0.5% Native American/Other. This demographic dot map shows the population of Jo Daviess County, with one dot drawn for each person counted by the Census, color-coded by race.

Jo Daviess has become slightly more racially diverse since the 2020 Census. It is considerably less diverse than Illinois overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Jo Daviess County, that probability was 14.5% in 2020 and 15.3% in the most recent ACS estimates.

Jo Daviess County is ranked the 53rd most populous county in Illinois, out of 102 counties. Jo Daviess County was ranked the 53rd most populous county in the 2020 Census.

Jo Daviess County's White Population

20,080 residents of Jo Daviess County, or 91.9% of the population, identify as White. The share of White residents in Jo Daviess County is significantly higher than in Illinois overall, where 58.1% of the population is White. Jo Daviess County ranks 37th statewide in terms of White residents as a share of the population, out of 102 counties.

Since the 2020 Census, Jo Daviess County's White population has declined by an estimated 1.3%. White residents' share of Jo Daviess County's population has decreased from 92.4% to 91.9%.

Jo Daviess County is more White than neighboring Lafayette County (89.7% White), Carroll County (87.8% White), Stephenson County (78.9% White), and Clinton County (89% White). Jo Daviess County is less White than neighboring Jackson County (93.6% White).

Jo Daviess County's Black Population

166 residents of Jo Daviess County, or 0.8% of the population, identify as Black. The share of Black residents in Jo Daviess County is considerably lower than in Illinois overall, where 13.3% of the population is Black. Jo Daviess County ranks 75th statewide in terms of Black residents as a share of the population, out of 102 counties.

Since the 2020 Census, Jo Daviess County's Black population has grown by an estimated 45.6%. Black residents' share of Jo Daviess County's population has remained roughly unchanged at 0.8%.

Jo Daviess County is more Black than neighboring Lafayette County (0.4% Black). Jo Daviess County is less Black than neighboring Carroll County (3.9% Black), Jackson County (1% Black), Stephenson County (8.5% Black), and Clinton County (3.1% Black).

Jo Daviess County's Asian Population

114 residents of Jo Daviess County, or 0.5% of the population, identify as Asian. The share of Asian residents in Jo Daviess County is lower than in Illinois overall, where 5.9% of the population is Asian. Jo Daviess County ranks 60th statewide in terms of Asian residents as a share of the population, out of 102 counties.

Since the 2020 Census, Jo Daviess County's Asian population has grown by an estimated 18.8%. Asian residents' share of Jo Daviess County's population has remained roughly unchanged at 0.5%.

Jo Daviess County is more Asian than neighboring Jackson County (0.1% Asian). Jo Daviess County is less Asian than neighboring Carroll County (0.8% Asian), Stephenson County (0.8% Asian), and Clinton County (0.7% Asian).

Jo Daviess County's Hispanic Population

912 residents of Jo Daviess County, or 4.2% of the population, identify as Hispanic. The share of Hispanic residents in Jo Daviess County is considerably lower than in Illinois overall, where 18.8% of the population is Hispanic. Jo Daviess County ranks 41st statewide in terms of Hispanic residents as a share of the population, out of 102 counties.

Since the 2020 Census, Jo Daviess County's Hispanic population has grown by an estimated 6.5%. Hispanic residents' share of Jo Daviess County's population has remained roughly unchanged at 4.2%.

Jo Daviess County is more Hispanic than neighboring Jackson County (1.6% Hispanic), and Clinton County (3.6% Hispanic). Jo Daviess County is less Hispanic than neighboring Lafayette County (7.1% Hispanic), Carroll County (5.3% Hispanic), and Stephenson County (5.6% Hispanic).

Jo Daviess County's Native American/Other Population

105 residents of Jo Daviess County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Jo Daviess County is comparable to the share in Illinois overall, where 0.5% of the population is Native American/Other. Jo Daviess County ranks 52nd statewide in terms of Native American/Other residents as a share of the population, out of 102 counties.

Since the 2020 Census, Jo Daviess County's Native American/Other population has grown by an estimated 18.0%. Native American/Other residents' share of Jo Daviess County's population has remained roughly unchanged at 0.5%.

Jo Daviess County is more Native American/Other than neighboring Clinton County (0.2% Native American/Other). Jo Daviess County is less Native American/Other than neighboring Jackson County (1.1% Native American/Other), and Stephenson County (0.6% Native American/Other).

Jo Daviess County's Multiracial Population

474 residents of Jo Daviess County, or 2.2% of the population, identify as Multiracial. The share of Multiracial residents in Jo Daviess County is comparable to the share in Illinois overall, where 3.4% of the population is Multiracial. Jo Daviess County ranks 95th statewide in terms of Multiracial residents as a share of the population, out of 102 counties.

Since the 2020 Census, Jo Daviess County's Multiracial population has declined by an estimated 9.9%. Multiracial residents' share of Jo Daviess County's population has remained roughly unchanged at 2.2%.

Jo Daviess County is more Multiracial than neighboring Lafayette County (1.8% Multiracial), and Carroll County (1.7% Multiracial). Jo Daviess County is less Multiracial than neighboring Jackson County (2.6% Multiracial), Stephenson County (5.6% Multiracial), and Clinton County (3.4% 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.