Ionia, IA Demographics

A map of Ionia's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	315	222	93.8%	98.2%
Hispanic	20	1	6.0%	0.4%
Multiracial	1	1	0.3%	0.4%
Black	0	0	0.0%	0.0%
Asian	0	0	0.0%	0.0%
Native American/Other	0	2	0.0%	0.9%

Ionia, Iowa has an estimated population of 336, a dramatic increase from the 226 recorded in the 2020 Census. The population is 93.8% White, 6.0% Hispanic, 0.3% Multiracial, 0.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Ionia, with one dot drawn for each person counted by the Census, color-coded by race.

Ionia has become considerably 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 Ionia, that probability was 3.5% in 2020 and 11.8% in the most recent ACS estimates.

Ionia is ranked the 577th 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). Ionia was ranked the 658th most populous place in the 2020 Census.

Ionia's White Population

315 residents of Ionia, or 93.8% of the population, identify as White. The share of White residents in Ionia is considerably higher than in Iowa overall, where 82.3% of the population is White. Ionia ranks 48th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ionia's White population has grown by an estimated 41.9%. White residents' share of Ionia's population has decreased from 98.2% to 93.8%.

Ionia is more White than neighboring North Washington (91.8% White), Nashua (92.4% White), New Hampton (86.9% White), and Alta Vista (85.6% White). Ionia is less White than neighboring Bassett (96% White).

Ionia's Black Population

0 residents of Ionia, or 0.0% of the population, identify as Black. The share of Black residents in Ionia is slightly lower than in Iowa overall, where 3.8% of the population is Black. Ionia ranks 600th statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ionia's Black population has grown from 0 to an estimated 0. Black residents' share of Ionia's population has remained roughly unchanged at 0.0%.

Ionia is less Black than neighboring Nashua (1% Black), and New Hampton (0.1% Black).

Ionia's Asian Population

0 residents of Ionia, or 0.0% of the population, identify as Asian. The share of Asian residents in Ionia is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Ionia ranks 543rd statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ionia's Asian population has grown from 0 to an estimated 0. Asian residents' share of Ionia's population has remained roughly unchanged at 0.0%.

Ionia is less Asian than neighboring Bassett (4% Asian).

Ionia's Hispanic Population

20 residents of Ionia, or 6.0% of the population, identify as Hispanic. The share of Hispanic residents in Ionia is comparable to the share in Iowa overall, where 7.3% of the population is Hispanic. Ionia ranks 917th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ionia's Hispanic population has grown by an estimated 1900.0%. Hispanic residents' share of Ionia's population has increased from 0.4% to 6.0%.

Ionia is more Hispanic than neighboring Bassett (0% Hispanic), North Washington (3% Hispanic), and Nashua (0.6% Hispanic). Ionia is less Hispanic than neighboring New Hampton (10.5% Hispanic), and Alta Vista (14.4% Hispanic).

Ionia's Native American/Other Population

0 residents of Ionia, 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 Ionia is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Ionia ranks 161st statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ionia's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Ionia's population has decreased from 0.9% to 0.0%.

Ionia is less Native American/Other than neighboring North Washington (5.2% Native American/Other), Nashua (0.5% Native American/Other), and New Hampton (0.4% Native American/Other).

Ionia's Multiracial Population

1 residents of Ionia, or 0.3% of the population, identify as Multiracial. The share of Multiracial residents in Ionia is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Ionia ranks 953rd statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ionia's Multiracial population has remained roughly the same. Multiracial residents' share of Ionia's population has remained roughly unchanged at 0.3%.

Ionia is more Multiracial than neighboring Bassett (0% Multiracial), North Washington (0% Multiracial), and Alta Vista (0% Multiracial). Ionia is less Multiracial than neighboring Nashua (5.5% Multiracial), and New Hampton (2.1% 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.