Marshalltown, IA Demographics

A map of Marshalltown's Population by Race

Marshalltown, Iowa has an estimated population of 27,626, a less than 1% change from the 27,591 recorded in the 2020 Census. The population is 54.1% White, 34.2% Hispanic, 4.9% Asian, 4.0% Multiracial, 2.1% Black, and 0.8% Native American/Other. This demographic dot map shows the population of Marshalltown, with one dot drawn for each person counted by the Census, color-coded by race.

Marshalltown has become more racially diverse since the 2020 Census. It is considerably more 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 Marshalltown, that probability was 56.6% in 2020 and 58.6% in the most recent ACS estimates.

Marshalltown is ranked the 17th 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). Marshalltown was ranked the 16th most populous place in the 2020 Census.

Marshalltown's White Population

14,935 residents of Marshalltown, or 54.1% of the population, identify as White. The share of White residents in Marshalltown is significantly lower than in Iowa overall, where 82.3% of the population is White. Marshalltown ranks 1018th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marshalltown's White population has declined by an estimated 6.0%. White residents' share of Marshalltown's population has decreased from 57.6% to 54.1%.

Marshalltown is less White than neighboring Haverhill (90.1% White), Ferguson (92.9% White), Green Mountain (100% White), Albion (57.1% White), and Le Grand (90.3% White).

Marshalltown's Black Population

586 residents of Marshalltown, or 2.1% of the population, identify as Black. The share of Black residents in Marshalltown is comparable to the share in Iowa overall, where 3.8% of the population is Black. Marshalltown ranks 79th statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marshalltown's Black population has declined by an estimated 17.2%. Black residents' share of Marshalltown's population has decreased from 2.6% to 2.1%.

Marshalltown is more Black than neighboring Haverhill (0% Black), Ferguson (0% Black), Green Mountain (0% Black), Albion (0.6% Black), and Le Grand (0.8% Black).

Marshalltown's Asian Population

1,343 residents of Marshalltown, or 4.9% of the population, identify as Asian. The share of Asian residents in Marshalltown is slightly higher than in Iowa overall, where 2.5% of the population is Asian. Marshalltown ranks 16th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marshalltown's Asian population has declined by an estimated 8.6%. Asian residents' share of Marshalltown's population has remained roughly unchanged at 4.9%.

Marshalltown is more Asian than neighboring Haverhill (0% Asian), Ferguson (0% Asian), Green Mountain (0% Asian), and Le Grand (0% Asian). Marshalltown is less Asian than neighboring Albion (34.1% Asian).

Marshalltown's Hispanic Population

9,443 residents of Marshalltown, or 34.2% of the population, identify as Hispanic. The share of Hispanic residents in Marshalltown is significantly higher than in Iowa overall, where 7.3% of the population is Hispanic. Marshalltown ranks 14th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marshalltown's Hispanic population has grown by an estimated 9.4%. Hispanic residents' share of Marshalltown's population has increased from 31.3% to 34.2%.

Marshalltown is more Hispanic than neighboring Haverhill (9.9% Hispanic), Ferguson (2.4% Hispanic), Green Mountain (0% Hispanic), Albion (4% Hispanic), and Le Grand (6% Hispanic).

Marshalltown's Native American/Other Population

220 residents of Marshalltown, or 0.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marshalltown is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Marshalltown ranks 197th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marshalltown's Native American/Other population has grown by an estimated 4.3%. Native American/Other residents' share of Marshalltown's population has remained roughly unchanged at 0.8%.

Marshalltown is more Native American/Other than neighboring Haverhill (0% Native American/Other), Ferguson (0% Native American/Other), Green Mountain (0% Native American/Other), Albion (0% Native American/Other), and Le Grand (0% Native American/Other).

Marshalltown's Multiracial Population

1,099 residents of Marshalltown, or 4.0% of the population, identify as Multiracial. The share of Multiracial residents in Marshalltown is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Marshalltown ranks 582nd statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marshalltown's Multiracial population has grown by an estimated 62.6%. Multiracial residents' share of Marshalltown's population has increased from 2.5% to 4.0%.

Marshalltown is more Multiracial than neighboring Haverhill (0% Multiracial), Green Mountain (0% Multiracial), and Le Grand (2.9% Multiracial). Marshalltown is less Multiracial than neighboring Ferguson (4.7% Multiracial), and Albion (4.2% 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.