Knox County Demographics

A map of Knox County's Population by Race

Knox County, Illinois had a population of 49,967 in 2020. It was 79.3% White, 8.7% Black, 0.7% Asian, 6.1% Hispanic, 0.6% Native American/Other, and 4.6% Multiracial. This map presents the population of Knox County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Knox County is the 29th most populous county of the 102 counties in Illinois.

Knox County's White Population

39,615 residents of Knox County identify as White, or 79.3%. This makes the White share of the population of Knox County considerably larger than the White share of the population of Illinois (58.3% White). Of the 102 counties in Illinois, Knox County is ranked #78 in terms of White residents as a share of the population.

Knox County is more White than neighboring Peoria County (66.3% White). Knox County is less White than neighboring Warren County (80.2% White), Henry County (87.4% White), Stark County (93.9% White), and Fulton County (91.1% White).

Knox County's Black Population

4,354 residents of Knox County identify as Black, or 8.7%. This makes the Black share of the population of Knox County slightly less than the Black share of the population of Illinois (13.9% Black). Of the 102 counties in Illinois, Knox County is ranked #20 in terms of Black residents as a share of the population.

Knox County is more Black than neighboring Warren County (3.4% Black), Henry County (2.1% Black), Stark County (0.3% Black), and Fulton County (3.3% Black). Knox County is less Black than neighboring Peoria County (18.5% Black).

Knox County's Asian Population

361 residents of Knox County identify as Asian, or 0.7%. This makes the Asian share of the population of Knox County slightly less than the Asian share of the population of Illinois (5.8% Asian). Of the 102 counties in Illinois, Knox County is ranked #38 in terms of Asian residents as a share of the population.

Knox County is more Asian than neighboring Henry County (0.4% Asian), Stark County (0.4% Asian), and Fulton County (0.2% Asian). Knox County is less Asian than neighboring Warren County (2% Asian), and Peoria County (4.3% Asian).

Knox County's Hispanic Population

3,051 residents of Knox County identify as Hispanic, or 6.1%. This makes the Hispanic share of the population of Knox County less than the Hispanic share of the population of Illinois (18.2% Hispanic). Of the 102 counties in Illinois, Knox County is ranked #27 in terms of Hispanic residents as a share of the population.

Knox County is more Hispanic than neighboring Stark County (2.4% Hispanic), Fulton County (2.2% Hispanic), and Peoria County (5.5% Hispanic). Knox County is less Hispanic than neighboring Warren County (10.6% Hispanic), and Henry County (6.4% Hispanic).

Knox County's Native American/Other Population

292 residents of Knox County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.6%. This makes the Native American/Other share of the population of Knox County roughly similar to the Native American/Other share of the population of Illinois (0.5% Native American/Other). Of the 102 counties in Illinois, Knox County is ranked #16 in terms of Native American/Other residents as a share of the population.

Knox County is more Native American/Other than neighboring Warren County (0.5% Native American/Other), Henry County (0.3% Native American/Other), Stark County (0.2% Native American/Other), and Fulton County (0.4% Native American/Other). Knox County is less Native American/Other than neighboring Peoria County (0.7% Native American/Other).

Knox County's Multiracial Population

2,294 residents of Knox County identify as Multiracial, or 4.6%. This makes the Multiracial share of the population of Knox County roughly similar to the Multiracial share of the population of Illinois (3.2% Multiracial). Of the 102 counties in Illinois, Knox County is ranked #14 in terms of Multiracial residents as a share of the population.

Knox County is more Multiracial than neighboring Warren County (3.3% Multiracial), Henry County (3.3% Multiracial), Stark County (2.7% Multiracial), and Fulton County (2.8% Multiracial). Knox County is less Multiracial than neighboring Peoria County (4.7% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.