Sac County Demographics

A map of Sac County's Population by Race

Sac County, Iowa has an estimated population of 9,689, a slight decrease from the 9,814 recorded in the 2020 Census. The population is 91.8% White, 4.4% Hispanic, 2.4% Multiracial, 0.5% Black, 0.5% Native American/Other, and 0.4% Asian. This demographic dot map shows the population of Sac County, with one dot drawn for each person counted by the Census, color-coded by race.

Sac 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 Sac County, that probability was 12.7% in 2020 and 15.4% in the most recent ACS estimates.

Sac County is ranked the 76th most populous county in Iowa, out of 99 counties. Sac County was ranked the 76th most populous county in the 2020 Census.

Sac County's White Population

8,899 residents of Sac County, or 91.8% of the population, identify as White. The share of White residents in Sac County is higher than in Iowa overall, where 82.3% of the population is White. Sac County ranks 32nd statewide in terms of White residents as a share of the population, out of 99 counties.

Since the 2020 Census, Sac County's White population has declined by an estimated 2.9%. White residents' share of Sac County's population has decreased from 93.3% to 91.8%.

Sac County is more White than neighboring Buena Vista County (52.1% White), Ida County (91.5% White), Crawford County (62.1% White), and Calhoun County (91.3% White). Sac County is less White than neighboring Carroll County (91.9% White).

Sac County's Black Population

44 residents of Sac County, or 0.5% of the population, identify as Black. The share of Black residents in Sac County is slightly lower than in Iowa overall, where 3.8% of the population is Black. Sac County ranks 67th statewide in terms of Black residents as a share of the population, out of 99 counties.

Since the 2020 Census, Sac County's Black population has declined by an estimated 4.3%. Black residents' share of Sac County's population has remained roughly unchanged at 0.5%.

Sac County is more Black than neighboring Ida County (0.3% Black). Sac County is less Black than neighboring Buena Vista County (3.3% Black), Crawford County (0.9% Black), and Calhoun County (1.6% Black).

Sac County's Asian Population

35 residents of Sac County, or 0.4% of the population, identify as Asian. The share of Asian residents in Sac County is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Sac County ranks 72nd statewide in terms of Asian residents as a share of the population, out of 99 counties.

Since the 2020 Census, Sac County's Asian population has grown by an estimated 12.9%. Asian residents' share of Sac County's population has remained roughly unchanged at 0.4%.

Sac County is more Asian than neighboring Carroll County (0.2% Asian), and Calhoun County (0.2% Asian). Sac County is less Asian than neighboring Buena Vista County (9.5% Asian), Ida County (0.7% Asian), and Crawford County (2.2% Asian).

Sac County's Hispanic Population

422 residents of Sac County, or 4.4% of the population, identify as Hispanic. The share of Hispanic residents in Sac County is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Sac County ranks 43rd statewide in terms of Hispanic residents as a share of the population, out of 99 counties.

Since the 2020 Census, Sac County's Hispanic population has grown by an estimated 19.2%. Hispanic residents' share of Sac County's population has increased from 3.6% to 4.4%.

Sac County is more Hispanic than neighboring Ida County (4.1% Hispanic), Carroll County (3.5% Hispanic), and Calhoun County (2.7% Hispanic). Sac County is less Hispanic than neighboring Buena Vista County (29.4% Hispanic), and Crawford County (30.8% Hispanic).

Sac County's Native American/Other Population

52 residents of Sac County, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Sac County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Sac County ranks 56th statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.

Since the 2020 Census, Sac County's Native American/Other population has grown by an estimated 30.0%. Native American/Other residents' share of Sac County's population has remained roughly unchanged at 0.5%.

Sac County is more Native American/Other than neighboring Ida County (0.2% Native American/Other), Carroll County (0.3% Native American/Other), and Crawford County (0.1% Native American/Other). Sac County is less Native American/Other than neighboring Buena Vista County (3.4% Native American/Other), and Calhoun County (0.6% Native American/Other).

Sac County's Multiracial Population

237 residents of Sac County, or 2.4% of the population, identify as Multiracial. The share of Multiracial residents in Sac County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Sac County ranks 90th statewide in terms of Multiracial residents as a share of the population, out of 99 counties.

Since the 2020 Census, Sac County's Multiracial population has grown by an estimated 30.2%. Multiracial residents' share of Sac County's population has increased from 1.9% to 2.4%.

Sac County is less Multiracial than neighboring Ida County (3.1% Multiracial), Carroll County (3.6% Multiracial), Crawford County (3.9% Multiracial), and Calhoun County (3.6% 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.