Delaware County Demographics

A map of Delaware County's Population by Race

Delaware County, Iowa had a population of 17,488 in 2020. It was 95.5% White, 0.7% Black, 0.2% Asian, 1.4% Hispanic, 0.3% Native American/Other, and 1.8% Multiracial. This map presents the population of Delaware County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Delaware County is the 40th most populous county of the 99 counties in Iowa.

Delaware County's White Population

16,706 residents of Delaware County identify as White, or 95.5%. This makes the White share of the population of Delaware County larger than the White share of the population of Iowa (82.7% White). Of the 99 counties in Iowa, Delaware County is ranked #6 in terms of White residents as a share of the population.

Delaware County is more White than neighboring Clayton County (94.5% White), Jones County (92% White), Linn County (81.6% White), Buchanan County (95.1% White), and Dubuque County (88% White).

Delaware County's Black Population

122 residents of Delaware County identify as Black, or 0.7%. This makes the Black share of the population of Delaware County roughly similar to the Black share of the population of Iowa (4.1% Black). Of the 99 counties in Iowa, Delaware County is ranked #52 in terms of Black residents as a share of the population.

Delaware County is more Black than neighboring Buchanan County (0.3% Black). Delaware County is less Black than neighboring Clayton County (0.9% Black), Jones County (2.1% Black), Linn County (7% Black), and Dubuque County (4.1% Black).

Delaware County's Asian Population

39 residents of Delaware County identify as Asian, or 0.2%. This makes the Asian share of the population of Delaware County roughly similar to the Asian share of the population of Iowa (2.4% Asian). Of the 99 counties in Iowa, Delaware County is ranked #88 in terms of Asian residents as a share of the population.

Delaware County is less Asian than neighboring Clayton County (0.3% Asian), Jones County (0.3% Asian), Linn County (2.3% Asian), Buchanan County (0.3% Asian), and Dubuque County (1% Asian).

Delaware County's Hispanic Population

244 residents of Delaware County identify as Hispanic, or 1.4%. This makes the Hispanic share of the population of Delaware County slightly less than the Hispanic share of the population of Iowa (6.8% Hispanic). Of the 99 counties in Iowa, Delaware County is ranked #94 in terms of Hispanic residents as a share of the population.

Delaware County is less Hispanic than neighboring Clayton County (2% Hispanic), Jones County (2.4% Hispanic), Linn County (3.9% Hispanic), Buchanan County (1.6% Hispanic), and Dubuque County (3% Hispanic).

Delaware County's Native American/Other Population

54 residents of Delaware County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.3%. This makes the Native American/Other share of the population of Delaware County roughly similar to the Native American/Other share of the population of Iowa (0.7% Native American/Other). Of the 99 counties in Iowa, Delaware County is ranked #76 in terms of Native American/Other residents as a share of the population.

Delaware County is more Native American/Other than neighboring Buchanan County (0.2% Native American/Other). Delaware County is less Native American/Other than neighboring Jones County (0.6% Native American/Other), Linn County (0.7% Native American/Other), and Dubuque County (1.2% Native American/Other).

Delaware County's Multiracial Population

323 residents of Delaware County identify as Multiracial, or 1.8%. This makes the Multiracial share of the population of Delaware County roughly similar to the Multiracial share of the population of Iowa (3.4% Multiracial). Of the 99 counties in Iowa, Delaware County is ranked #91 in terms of Multiracial residents as a share of the population.

Delaware County is less Multiracial than neighboring Clayton County (1.9% Multiracial), Jones County (2.6% Multiracial), Linn County (4.5% Multiracial), Buchanan County (2.4% Multiracial), and Dubuque County (2.7% Multiracial).

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