Polk City, IA Demographics

A map of Polk City's Population by Race

Polk City, Iowa has an estimated population of 6,037, an increase from the 5,543 recorded in the 2020 Census. The population is 96.2% White, 2.5% Hispanic, 1.1% Multiracial, 0.2% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Polk City, with one dot drawn for each person counted by the Census, color-coded by race.

Polk City has become considerably less 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 Polk City, that probability was 12.9% in 2020 and 7.4% in the most recent ACS estimates.

Polk City is ranked the 66th most populous place in Iowa, out of 1,026 places. 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). Polk City was ranked the 70th most populous place in the 2020 Census.

Polk City's White Population

5,808 residents of Polk City, or 96.2% of the population, identify as White. The share of White residents in Polk City is considerably higher than in Iowa overall, where 82.3% of the population is White. Polk City ranks 485th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Polk City's White population has grown by an estimated 12.4%. White residents' share of Polk City's population has increased from 93.3% to 96.2%.

Polk City is more White than neighboring Johnston (75.9% White), Slater (91.8% White), and Granger (91.6% White). Polk City is less White than neighboring Sheldahl (98.9% White), and Alleman (97% White).

Polk City's Black Population

10 residents of Polk City, or 0.2% of the population, identify as Black. The share of Black residents in Polk City is slightly lower than in Iowa overall, where 3.8% of the population is Black. Polk City ranks 331st statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Polk City's Black population has declined by an estimated 69.7%. Black residents' share of Polk City's population has remained roughly unchanged at 0.2%.

Polk City is more Black than neighboring Sheldahl (0% Black), and Slater (0.1% Black). Polk City is less Black than neighboring Johnston (10.6% Black), Alleman (2.3% Black), and Granger (0.7% Black).

Polk City's Asian Population

0 residents of Polk City, or 0.0% of the population, identify as Asian. The share of Asian residents in Polk City is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Polk City ranks 243rd statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Polk City's Asian population has declined by an estimated 100.0%. Asian residents' share of Polk City's population has decreased from 0.6% to 0.0%.

Polk City is less Asian than neighboring Johnston (7.3% Asian), and Granger (0.3% Asian).

Polk City's Hispanic Population

152 residents of Polk City, or 2.5% of the population, identify as Hispanic. The share of Hispanic residents in Polk City is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Polk City ranks 617th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Polk City's Hispanic population has grown by an estimated 36.9%. Hispanic residents' share of Polk City's population has increased from 2.0% to 2.5%.

Polk City is more Hispanic than neighboring Sheldahl (0% Hispanic), and Alleman (0.5% Hispanic). Polk City is less Hispanic than neighboring Johnston (2.7% Hispanic), Slater (5.2% Hispanic), and Granger (4.1% Hispanic).

Polk City's Native American/Other Population

0 residents of Polk City, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Polk City is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Polk City ranks 459th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Polk City's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Polk City's population has remained roughly unchanged at 0.0%.

Polk City is less Native American/Other than neighboring Johnston (0.2% Native American/Other), Sheldahl (0.8% Native American/Other), and Slater (1.2% Native American/Other).

Polk City's Multiracial Population

67 residents of Polk City, or 1.1% of the population, identify as Multiracial. The share of Multiracial residents in Polk City is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Polk City ranks 368th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Polk City's Multiracial population has declined by an estimated 62.1%. Multiracial residents' share of Polk City's population has decreased from 3.2% to 1.1%.

Polk City is more Multiracial than neighboring Sheldahl (0.3% Multiracial), and Alleman (0.2% Multiracial). Polk City is less Multiracial than neighboring Johnston (3.4% Multiracial), Slater (1.6% Multiracial), and Granger (3.4% 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.