Henry County Demographics

A map of Henry County's Population by Race

Henry County, Iowa has an estimated population of 20,004, a slight decrease from the 20,482 recorded in the 2020 Census. The population is 86.2% White, 5.5% Hispanic, 4.4% Multiracial, 2.5% Black, 0.9% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Henry County, with one dot drawn for each person counted by the Census, color-coded by race.

Henry is about as racially diverse as it was in 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 Henry County, that probability was 25.3% in 2020 and 25.1% in the most recent ACS estimates.

Henry County is ranked the 33rd most populous county in Iowa, out of 99 counties. Henry County was ranked the 33rd most populous county in the 2020 Census.

Henry County's White Population

17,245 residents of Henry County, or 86.2% of the population, identify as White. The share of White residents in Henry County is slightly higher than in Iowa overall, where 82.3% of the population is White. Henry County ranks 75th statewide in terms of White residents as a share of the population, out of 99 counties.

Since the 2020 Census, Henry County's White population has declined by an estimated 2.3%. White residents' share of Henry County's population has remained roughly unchanged at 86.2%.

Henry County is more White than neighboring Louisa County (77% White), Des Moines County (84.5% White), and Jefferson County (82.4% White). Henry County is less White than neighboring Lee County (90.3% White), and Washington County (88.7% White).

Henry County's Black Population

506 residents of Henry County, or 2.5% of the population, identify as Black. The share of Black residents in Henry County is comparable to the share in Iowa overall, where 3.8% of the population is Black. Henry County ranks 19th statewide in terms of Black residents as a share of the population, out of 99 counties.

Since the 2020 Census, Henry County's Black population has remained roughly the same. Black residents' share of Henry County's population has remained roughly unchanged at 2.5%.

Henry County is more Black than neighboring Lee County (2.4% Black), Louisa County (0.9% Black), Washington County (1% Black), and Jefferson County (2.4% Black). Henry County is less Black than neighboring Des Moines County (4.7% Black).

Henry County's Asian Population

175 residents of Henry County, or 0.9% of the population, identify as Asian. The share of Asian residents in Henry County is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Henry County ranks 13th statewide in terms of Asian residents as a share of the population, out of 99 counties.

Since the 2020 Census, Henry County's Asian population has declined by an estimated 61.2%. Asian residents' share of Henry County's population has decreased from 2.2% to 0.9%.

Henry County is more Asian than neighboring Lee County (0.6% Asian), and Washington County (0.4% Asian). Henry County is less Asian than neighboring Louisa County (2.2% Asian), Des Moines County (1.2% Asian), and Jefferson County (8.2% Asian).

Henry County's Hispanic Population

1,109 residents of Henry County, or 5.5% of the population, identify as Hispanic. The share of Hispanic residents in Henry County is comparable to the share in Iowa overall, where 7.3% of the population is Hispanic. Henry County ranks 29th statewide in terms of Hispanic residents as a share of the population, out of 99 counties.

Since the 2020 Census, Henry County's Hispanic population has grown by an estimated 2.4%. Hispanic residents' share of Henry County's population has remained roughly unchanged at 5.5%.

Henry County is more Hispanic than neighboring Lee County (3.5% Hispanic), Des Moines County (3.7% Hispanic), and Jefferson County (4.1% Hispanic). Henry County is less Hispanic than neighboring Louisa County (16.4% Hispanic), and Washington County (7.8% Hispanic).

Henry County's Native American/Other Population

85 residents of Henry County, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Henry County is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Henry County ranks 20th statewide in terms of Native American/Other residents as a share of the population, out of 99 counties.

Since the 2020 Census, Henry County's Native American/Other population has declined by an estimated 39.7%. Native American/Other residents' share of Henry County's population has remained roughly unchanged at 0.4%.

Henry County is more Native American/Other than neighboring Lee County (0.3% Native American/Other), Louisa County (0.1% Native American/Other), and Washington County (0.2% Native American/Other).

Henry County's Multiracial Population

884 residents of Henry County, or 4.4% of the population, identify as Multiracial. The share of Multiracial residents in Henry County is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Henry County ranks 19th statewide in terms of Multiracial residents as a share of the population, out of 99 counties.

Since the 2020 Census, Henry County's Multiracial population has grown by an estimated 33.3%. Multiracial residents' share of Henry County's population has increased from 3.2% to 4.4%.

Henry County is more Multiracial than neighboring Lee County (3% Multiracial), Louisa County (3.4% Multiracial), Washington County (2% Multiracial), and Jefferson County (2.5% Multiracial). Henry County is less Multiracial than neighboring Des Moines County (5.5% 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.