Union, IA Demographics

A map of Union's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	370	368	97.9%	92.2%
Multiracial	4	10	1.1%	2.5%
Hispanic	3	14	0.8%	3.5%
Asian	1	4	0.3%	1.0%
Black	0	3	0.0%	0.8%
Native American/Other	0	0	0.0%	0.0%

Union, Iowa has an estimated population of 378, a decrease from the 399 recorded in the 2020 Census. The population is 97.9% White, 1.1% Multiracial, 0.8% Hispanic, 0.3% Asian, 0.0% Black, and 0.0% Native American/Other. This demographic dot map shows the population of Union, with one dot drawn for each person counted by the Census, color-coded by race.

Union 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 Union, that probability was 14.7% in 2020 and 4.2% in the most recent ACS estimates.

Union is ranked the 550th 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). Union was ranked the 499th most populous place in the 2020 Census.

Union's White Population

370 residents of Union, or 97.9% of the population, identify as White. The share of White residents in Union is significantly higher than in Iowa overall, where 82.3% of the population is White. Union ranks 582nd statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Union's White population has remained roughly the same. White residents' share of Union's population has increased from 92.2% to 97.9%.

Union is more White than neighboring Whitten (90.2% White), Liscomb (86.9% White), New Providence (95.4% White), Eldora (84.3% White), and Albion (57.1% White).

Union's Black Population

0 residents of Union, or 0.0% of the population, identify as Black. The share of Black residents in Union is slightly lower than in Iowa overall, where 3.8% of the population is Black. Union ranks 272nd statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Union's Black population has declined by an estimated 100.0%. Black residents' share of Union's population has decreased from 0.8% to 0.0%.

Union is less Black than neighboring Eldora (2.1% Black), and Albion (0.6% Black).

Union's Asian Population

1 residents of Union, or 0.3% of the population, identify as Asian. The share of Asian residents in Union is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Union ranks 139th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Union's Asian population has declined by an estimated 75.0%. Asian residents' share of Union's population has decreased from 1.0% to 0.3%.

Union is more Asian than neighboring Liscomb (0% Asian). Union is less Asian than neighboring Whitten (6.1% Asian), New Providence (1.2% Asian), Eldora (2.9% Asian), and Albion (34.1% Asian).

Union's Hispanic Population

3 residents of Union, or 0.8% of the population, identify as Hispanic. The share of Hispanic residents in Union is lower than in Iowa overall, where 7.3% of the population is Hispanic. Union ranks 354th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Union's Hispanic population has declined by an estimated 78.6%. Hispanic residents' share of Union's population has decreased from 3.5% to 0.8%.

Union is more Hispanic than neighboring New Providence (0% Hispanic). Union is less Hispanic than neighboring Whitten (1.2% Hispanic), Liscomb (9.7% Hispanic), Eldora (3.3% Hispanic), and Albion (4% Hispanic).

Union's Native American/Other Population

0 residents of Union, 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 Union is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Union ranks 637th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Union's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of Union's population has remained roughly unchanged at 0.0%.

Union is less Native American/Other than neighboring Liscomb (1.3% Native American/Other), and Eldora (1.3% Native American/Other).

Union's Multiracial Population

4 residents of Union, or 1.1% of the population, identify as Multiracial. The share of Multiracial residents in Union is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Union ranks 561st statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Union's Multiracial population has declined by an estimated 60.0%. Multiracial residents' share of Union's population has decreased from 2.5% to 1.1%.

Union is less Multiracial than neighboring Whitten (2.4% Multiracial), Liscomb (2% Multiracial), New Providence (3.5% Multiracial), Eldora (6% 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.