Cass County Demographics

A map of Cass County's Population by Race

Cass County, Illinois had a population of 13,042 in 2020. It was 69.5% White, 5.4% Black, 0.9% Asian, 21.4% Hispanic, 0.6% Native American/Other, and 2.2% Multiracial. This map presents the population of Cass County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Cass County is the 82nd most populous county of the 102 counties in Illinois.

Cass County's White Population

9,061 residents of Cass County identify as White, or 69.5%. This makes the White share of the population of Cass County slightly larger than the White share of the population of Illinois (58.3% White). Of the 102 counties in Illinois, Cass County is ranked #87 in terms of White residents as a share of the population.

Cass County is less White than neighboring Morgan County (86.6% White), Scott County (95.9% White), Schuyler County (89.2% White), Mason County (94.3% White), and Menard County (93.5% White).

Cass County's Black Population

706 residents of Cass County identify as Black, or 5.4%. This makes the Black share of the population of Cass County slightly less than the Black share of the population of Illinois (13.9% Black). Of the 102 counties in Illinois, Cass County is ranked #32 in terms of Black residents as a share of the population.

Cass County is more Black than neighboring Scott County (0.1% Black), Schuyler County (4.1% Black), Mason County (0.4% Black), and Menard County (0.7% Black). Cass County is less Black than neighboring Morgan County (6% Black).

Cass County's Asian Population

117 residents of Cass County identify as Asian, or 0.9%. This makes the Asian share of the population of Cass County roughly similar to the Asian share of the population of Illinois (5.8% Asian). Of the 102 counties in Illinois, Cass County is ranked #28 in terms of Asian residents as a share of the population.

Cass County is more Asian than neighboring Morgan County (0.8% Asian), Scott County (0.2% Asian), Schuyler County (0.4% Asian), Mason County (0.2% Asian), and Menard County (0.4% Asian).

Cass County's Hispanic Population

2,789 residents of Cass County identify as Hispanic, or 21.4%. This makes the Hispanic share of the population of Cass County roughly similar to the Hispanic share of the population of Illinois (18.2% Hispanic). Of the 102 counties in Illinois, Cass County is ranked #5 in terms of Hispanic residents as a share of the population.

Cass County is more Hispanic than neighboring Morgan County (2.5% Hispanic), Scott County (1% Hispanic), Schuyler County (2.2% Hispanic), Mason County (1.4% Hispanic), and Menard County (1.3% Hispanic).

Cass County's Native American/Other Population

79 residents of Cass 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 Cass 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, Cass County is ranked #12 in terms of Native American/Other residents as a share of the population.

Cass County is more Native American/Other than neighboring Morgan County (0.5% Native American/Other), Scott County (0.1% Native American/Other), Mason County (0.3% Native American/Other), and Menard County (0.4% Native American/Other). Cass County is less Native American/Other than neighboring Schuyler County (0.7% Native American/Other).

Cass County's Multiracial Population

290 residents of Cass County identify as Multiracial, or 2.2%. This makes the Multiracial share of the population of Cass County roughly similar to the Multiracial share of the population of Illinois (3.2% Multiracial). Of the 102 counties in Illinois, Cass County is ranked #98 in terms of Multiracial residents as a share of the population.

Cass County is less Multiracial than neighboring Morgan County (3.7% Multiracial), Scott County (2.6% Multiracial), Schuyler County (3.4% Multiracial), Mason County (3.5% Multiracial), and Menard County (3.7% Multiracial).

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