Winnebago County Demographics

A map of Winnebago County's Population by Race

Winnebago County, Illinois had a population of 285,350 in 2020. It was 64.2% White, 13.4% Black, 2.8% Asian, 14.4% Hispanic, 0.6% Native American/Other, and 4.6% Multiracial. This map presents the population of Winnebago County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Winnebago County is the 7th most populous county of the 102 counties in Illinois.

Winnebago County's White Population

183,235 residents of Winnebago County identify as White, or 64.2%. This makes the White share of the population of Winnebago County slightly larger than the White share of the population of Illinois (58.3% White). Of the 102 counties in Illinois, Winnebago County is ranked #93 in terms of White residents as a share of the population.

Winnebago County is less White than neighboring Ogle County (83.3% White), Boone County (68.6% White), Rock County (79.3% White), Stephenson County (79.3% White), and Green County (91.6% White).

Winnebago County's Black Population

38,240 residents of Winnebago County identify as Black, or 13.4%. This makes the Black share of the population of Winnebago County roughly similar to the Black share of the population of Illinois (13.9% Black). Of the 102 counties in Illinois, Winnebago County is ranked #12 in terms of Black residents as a share of the population.

Winnebago County is more Black than neighboring Ogle County (1% Black), Boone County (2.2% Black), Rock County (4.9% Black), Stephenson County (9.8% Black), and Green County (0.5% Black).

Winnebago County's Asian Population

7,938 residents of Winnebago County identify as Asian, or 2.8%. This makes the Asian share of the population of Winnebago County roughly similar to the Asian share of the population of Illinois (5.8% Asian). Of the 102 counties in Illinois, Winnebago County is ranked #13 in terms of Asian residents as a share of the population.

Winnebago County is more Asian than neighboring Ogle County (0.5% Asian), Boone County (1.2% Asian), Rock County (1.2% Asian), Stephenson County (0.7% Asian), and Green County (0.5% Asian).

Winnebago County's Hispanic Population

40,952 residents of Winnebago County identify as Hispanic, or 14.4%. This makes the Hispanic share of the population of Winnebago County roughly similar to the Hispanic share of the population of Illinois (18.2% Hispanic). Of the 102 counties in Illinois, Winnebago County is ranked #10 in terms of Hispanic residents as a share of the population.

Winnebago County is more Hispanic than neighboring Ogle County (11.2% Hispanic), Rock County (9.7% Hispanic), Stephenson County (5.1% Hispanic), and Green County (4% Hispanic). Winnebago County is less Hispanic than neighboring Boone County (24.1% Hispanic).

Winnebago County's Native American/Other Population

1,724 residents of Winnebago 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 Winnebago 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, Winnebago County is ranked #13 in terms of Native American/Other residents as a share of the population.

Winnebago County is more Native American/Other than neighboring Ogle County (0.3% Native American/Other), Boone County (0.5% Native American/Other), and Green County (0.3% Native American/Other).

Winnebago County's Multiracial Population

13,261 residents of Winnebago County identify as Multiracial, or 4.6%. This makes the Multiracial share of the population of Winnebago County roughly similar to the Multiracial share of the population of Illinois (3.2% Multiracial). Of the 102 counties in Illinois, Winnebago County is ranked #13 in terms of Multiracial residents as a share of the population.

Winnebago County is more Multiracial than neighboring Ogle County (3.7% Multiracial), Boone County (3.4% Multiracial), Rock County (4.3% Multiracial), and Green County (3.1% Multiracial).

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