Seymour, IA Demographics

A map of Seymour's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	529	580	89.1%	91.5%
Multiracial	65	37	10.9%	5.8%
Black	0	0	0.0%	0.0%
Asian	0	2	0.0%	0.3%
Hispanic	0	10	0.0%	1.6%
Native American/Other	0	5	0.0%	0.8%

Seymour, Iowa has an estimated population of 594, a decrease from the 634 recorded in the 2020 Census. The population is 89.1% White, 10.9% Multiracial, 0.0% Black, 0.0% Asian, 0.0% Hispanic, and 0.0% Native American/Other. This demographic dot map shows the population of Seymour, with one dot drawn for each person counted by the Census, color-coded by race.

Seymour has become 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 Seymour, that probability was 15.9% in 2020 and 19.5% in the most recent ACS estimates.

Seymour is ranked the 427th 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). Seymour was ranked the 404th most populous place in the 2020 Census.

Seymour's White Population

529 residents of Seymour, or 89.1% of the population, identify as White. The share of White residents in Seymour is higher than in Iowa overall, where 82.3% of the population is White. Seymour ranks 647th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Seymour's White population has declined by an estimated 8.8%. White residents' share of Seymour's population has decreased from 91.5% to 89.1%.

Seymour is more White than neighboring Plano (66.7% White). Seymour is less White than neighboring Promise City (97.1% White), Numa (96.6% White), Mystic (96.3% White), and Cincinnati (98.7% White).

Seymour's Black Population

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

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

Seymour's Asian Population

0 residents of Seymour, or 0.0% of the population, identify as Asian. The share of Asian residents in Seymour is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Seymour ranks 389th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

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

Seymour's Hispanic Population

0 residents of Seymour, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Seymour is lower than in Iowa overall, where 7.3% of the population is Hispanic. Seymour ranks 704th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Seymour's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Seymour's population has decreased from 1.6% to 0.0%.

Seymour's Native American/Other Population

0 residents of Seymour, 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 Seymour is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Seymour ranks 187th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Seymour's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Seymour's population has decreased from 0.8% to 0.0%.

Seymour's Multiracial Population

65 residents of Seymour, or 10.9% of the population, identify as Multiracial. The share of Multiracial residents in Seymour is higher than in Iowa overall, where 3.5% of the population is Multiracial. Seymour ranks 65th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Seymour's Multiracial population has grown by an estimated 75.7%. Multiracial residents' share of Seymour's population has increased from 5.8% to 10.9%.

Seymour is more Multiracial than neighboring Promise City (2.9% Multiracial), Numa (3.4% Multiracial), Mystic (3.7% Multiracial), and Cincinnati (1.3% Multiracial). Seymour is less Multiracial than neighboring Plano (33.3% 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.