Ottawa, IL Demographics

A map of Ottawa's Population by Race

Ottawa, Illinois had a population of 18,840 in 2020. It was 82.8% White, 2.3% Black, 1.0% Asian, 9.5% Hispanic, 0.5% Native American/Other, and 3.9% Multiracial. This map presents the population of Ottawa, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Of the 1,466 places in Illinois, Ottawa is the 132nd most populous. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs).

Ottawa's White Population

15,607 residents of Ottawa identify as White, or 82.8%. This makes the White share of the population of Ottawa considerably larger than the White share of the population of Illinois (58.3% White). Of the 1,466 places in Illinois, Ottawa is ranked #1060 in terms of White residents as a share of the population.

Ottawa is less White than neighboring Dayton (87.5% White), Naplate (83.3% White), Wedron (88.6% White), Grand Ridge (89.1% White), and Marseilles (85.7% White).

Ottawa's Black Population

428 residents of Ottawa identify as Black, or 2.3%. This makes the Black share of the population of Ottawa slightly less than the Black share of the population of Illinois (13.9% Black). Of the 1,466 places in Illinois, Ottawa is ranked #338 in terms of Black residents as a share of the population.

Ottawa is more Black than neighboring Dayton (0.4% Black), Naplate (1.7% Black), Wedron (0.7% Black), Grand Ridge (0% Black), and Marseilles (0.8% Black).

Ottawa's Asian Population

193 residents of Ottawa identify as Asian, or 1.0%. This makes the Asian share of the population of Ottawa roughly similar to the Asian share of the population of Illinois (5.8% Asian). Of the 1,466 places in Illinois, Ottawa is ranked #365 in terms of Asian residents as a share of the population.

Ottawa is more Asian than neighboring Naplate (0.2% Asian), Wedron (0% Asian), Grand Ridge (0.2% Asian), and Marseilles (0.5% Asian). Ottawa is less Asian than neighboring Dayton (2.8% Asian).

Ottawa's Hispanic Population

1,789 residents of Ottawa identify as Hispanic, or 9.5%. This makes the Hispanic share of the population of Ottawa slightly less than the Hispanic share of the population of Illinois (18.2% Hispanic). Of the 1,466 places in Illinois, Ottawa is ranked #267 in terms of Hispanic residents as a share of the population.

Ottawa is more Hispanic than neighboring Dayton (6.4% Hispanic), Naplate (7.5% Hispanic), Wedron (5.7% Hispanic), Grand Ridge (7.2% Hispanic), and Marseilles (7.2% Hispanic).

Ottawa's Native American/Other Population

92 residents of Ottawa identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.5%. This makes the Native American/Other share of the population of Ottawa roughly similar to the Native American/Other share of the population of Illinois (0.5% Native American/Other). Of the 1,466 places in Illinois, Ottawa is ranked #443 in terms of Native American/Other residents as a share of the population.

Ottawa is more Native American/Other than neighboring Wedron (0% Native American/Other), and Grand Ridge (0% Native American/Other). Ottawa is less Native American/Other than neighboring Dayton (0.6% Native American/Other), Naplate (1.5% Native American/Other), and Marseilles (0.6% Native American/Other).

Ottawa's Multiracial Population

731 residents of Ottawa identify as Multiracial, or 3.9%. This makes the Multiracial share of the population of Ottawa roughly similar to the Multiracial share of the population of Illinois (3.2% Multiracial). Of the 1,466 places in Illinois, Ottawa is ranked #552 in terms of Multiracial residents as a share of the population.

Ottawa is more Multiracial than neighboring Dayton (2.3% Multiracial), and Grand Ridge (3.5% Multiracial). Ottawa is less Multiracial than neighboring Naplate (5.8% Multiracial), Wedron (5% Multiracial), and Marseilles (5.3% Multiracial).

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