Ossian, IA Demographics

A map of Ossian's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	763	738	94.7%	92.0%
Hispanic	33	52	4.1%	6.5%
Multiracial	10	7	1.2%	0.9%
Black	0	1	0.0%	0.1%
Asian	0	2	0.0%	0.2%
Native American/Other	0	2	0.0%	0.2%

Ossian, Iowa has an estimated population of 806, a less than 1% change from the 802 recorded in the 2020 Census. The population is 94.7% White, 4.1% Hispanic, 1.2% Multiracial, 0.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Ossian, with one dot drawn for each person counted by the Census, color-coded by race.

Ossian has become 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 Ossian, that probability was 14.9% in 2020 and 10.2% in the most recent ACS estimates.

Ossian is ranked the 344th 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). Ossian was ranked the 337th most populous place in the 2020 Census.

Ossian's White Population

763 residents of Ossian, or 94.7% of the population, identify as White. The share of White residents in Ossian is considerably higher than in Iowa overall, where 82.3% of the population is White. Ossian ranks 607th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ossian's White population has grown by an estimated 3.4%. White residents' share of Ossian's population has increased from 92.0% to 94.7%.

Ossian is more White than neighboring Calmar (91.4% White), and Decorah (89.8% White). Ossian is less White than neighboring Castalia (100% White), Fort Atkinson (98.6% White), and Clermont (98.1% White).

Ossian's Black Population

0 residents of Ossian, or 0.0% of the population, identify as Black. The share of Black residents in Ossian is slightly lower than in Iowa overall, where 3.8% of the population is Black. Ossian ranks 579th statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ossian's Black population has declined by an estimated 100.0%. Black residents' share of Ossian's population has remained roughly unchanged at 0.0%.

Ossian is less Black than neighboring Decorah (1.1% Black).

Ossian's Asian Population

0 residents of Ossian, or 0.0% of the population, identify as Asian. The share of Asian residents in Ossian is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Ossian ranks 446th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ossian's Asian population has declined by an estimated 100.0%. Asian residents' share of Ossian's population has remained roughly unchanged at 0.0%.

Ossian is less Asian than neighboring Decorah (1.3% Asian).

Ossian's Hispanic Population

33 residents of Ossian, or 4.1% of the population, identify as Hispanic. The share of Hispanic residents in Ossian is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Ossian ranks 159th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ossian's Hispanic population has declined by an estimated 36.5%. Hispanic residents' share of Ossian's population has decreased from 6.5% to 4.1%.

Ossian is more Hispanic than neighboring Castalia (0% Hispanic), Decorah (3.8% Hispanic), Fort Atkinson (0.3% Hispanic), and Clermont (0% Hispanic). Ossian is less Hispanic than neighboring Calmar (7.3% Hispanic).

Ossian's Native American/Other Population

0 residents of Ossian, 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 Ossian is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Ossian ranks 529th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

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

Ossian is less Native American/Other than neighboring Decorah (0.4% Native American/Other).

Ossian's Multiracial Population

10 residents of Ossian, or 1.2% of the population, identify as Multiracial. The share of Multiracial residents in Ossian is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Ossian ranks 910th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Ossian's Multiracial population has grown by an estimated 42.9%. Multiracial residents' share of Ossian's population has remained roughly unchanged at 1.2%.

Ossian is more Multiracial than neighboring Castalia (0% Multiracial). Ossian is less Multiracial than neighboring Calmar (1.3% Multiracial), Decorah (3.6% Multiracial), and Clermont (1.9% 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.