Dickinson County Demographics

A map of Dickinson County's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	16,795	16,709	93.4%	94.4%
Multiracial	583	392	3.2%	2.2%
Hispanic	513	406	2.9%	2.3%
Asian	83	80	0.5%	0.5%
Native American/Other	10	40	0.1%	0.2%
Black	6	76	0.0%	0.4%

Dickinson County, Iowa has an estimated population of 17,990, a slight increase from the 17,703 recorded in the 2020 Census. The population is 93.4% White, 3.2% Multiracial, 2.9% Hispanic, 0.5% Asian, 0.1% Native American/Other, and 0.0% Black. This demographic dot map shows the population of Dickinson County, with one dot drawn for each person counted by the Census, color-coded by race.

Dickinson has become more racially diverse since the 2020 Census. It is considerably less diverse than Iowa overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Dickinson County, that probability was 10.8% in 2020 and 12.7% in the most recent ACS estimates.

Dickinson County is ranked the 39th most populous county in Iowa, out of 99 counties. Dickinson County was ranked the 39th most populous county in the 2020 Census.

Dickinson County's White Population

16,795 residents of Dickinson County, or 93.4% of the population, identify as White. The share of White residents in Dickinson County is considerably higher than in Iowa overall, where 82.3% of the population is White. Dickinson County ranks 17th statewide in terms of White residents as a share of the population, out of 99 counties.

Since the 2020 Census, Dickinson County's White population has remained roughly the same. White residents' share of Dickinson County's population has decreased from 94.4% to 93.4%.

Dickinson County is more White than neighboring Clay County (91.1% White), Jackson County (89.8% White), Emmet County (85.2% White), Osceola County (84% White), and Palo Alto County (91.3% White).

Dickinson County's Black Population

6 residents of Dickinson County, or 0.0% of the population, identify as Black. The share of Black residents in Dickinson County is slightly lower than in Iowa overall, where 3.8% of the population is Black. Dickinson County ranks 73rd statewide in terms of Black residents as a share of the population, out of 99 counties.

Since the 2020 Census, Dickinson County's Black population has declined by an estimated 92.1%. Black residents' share of Dickinson County's population has remained roughly unchanged at 0.0%.

Dickinson County is less Black than neighboring Clay County (0.3% Black), Jackson County (0.5% Black), Emmet County (1.6% Black), Osceola County (0.5% Black), and Palo Alto County (1.6% Black).

Dickinson County's Asian Population

83 residents of Dickinson County, or 0.5% of the population, identify as Asian. The share of Asian residents in Dickinson County is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Dickinson County ranks 51st statewide in terms of Asian residents as a share of the population, out of 99 counties.

Since the 2020 Census, Dickinson County's Asian population has grown by an estimated 3.8%. Asian residents' share of Dickinson County's population has remained roughly unchanged at 0.5%.

Dickinson County is more Asian than neighboring Emmet County (0.2% Asian). Dickinson County is less Asian than neighboring Clay County (0.8% Asian), Jackson County (1.3% Asian), Osceola County (0.6% Asian), and Palo Alto County (0.6% Asian).

Dickinson County's Hispanic Population

513 residents of Dickinson County, or 2.9% of the population, identify as Hispanic. The share of Hispanic residents in Dickinson County is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Dickinson County ranks 76th statewide in terms of Hispanic residents as a share of the population, out of 99 counties.

Since the 2020 Census, Dickinson County's Hispanic population has grown by an estimated 26.4%. Hispanic residents' share of Dickinson County's population has increased from 2.3% to 2.9%.

Dickinson County is less Hispanic than neighboring Clay County (4.7% Hispanic), Jackson County (4.9% Hispanic), Emmet County (10.2% Hispanic), Osceola County (10.6% Hispanic), and Palo Alto County (3.5% Hispanic).

Dickinson County's Native American/Other Population

10 residents of Dickinson County, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Dickinson County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Dickinson County ranks 89th statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.

Since the 2020 Census, Dickinson County's Native American/Other population has declined by an estimated 75.0%. Native American/Other residents' share of Dickinson County's population has remained roughly unchanged at 0.1%.

Dickinson County is less Native American/Other than neighboring Clay County (0.2% Native American/Other), Jackson County (0.2% Native American/Other), Emmet County (0.6% Native American/Other), Osceola County (1.3% Native American/Other), and Palo Alto County (0.2% Native American/Other).

Dickinson County's Multiracial Population

583 residents of Dickinson County, or 3.2% of the population, identify as Multiracial. The share of Multiracial residents in Dickinson County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Dickinson County ranks 72nd statewide in terms of Multiracial residents as a share of the population, out of 99 counties.

Since the 2020 Census, Dickinson County's Multiracial population has grown by an estimated 48.7%. Multiracial residents' share of Dickinson County's population has increased from 2.2% to 3.2%.

Dickinson County is more Multiracial than neighboring Clay County (2.9% Multiracial), Emmet County (2.1% Multiracial), Osceola County (3% Multiracial), and Palo Alto County (2.8% Multiracial). Dickinson County is less Multiracial than neighboring Jackson County (3.3% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.