Duncombe, IA Demographics

A map of Duncombe's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	340	345	90.4%	90.6%
Multiracial	16	11	4.3%	2.9%
Asian	11	3	2.9%	0.8%
Hispanic	9	21	2.4%	5.5%
Black	0	1	0.0%	0.3%
Native American/Other	0	0	0.0%	0.0%

Duncombe, Iowa has an estimated population of 376, a slight decrease from the 381 recorded in the 2020 Census. The population is 90.4% White, 4.3% Multiracial, 2.9% Asian, 2.4% Hispanic, 0.0% Black, and 0.0% Native American/Other. This demographic dot map shows the population of Duncombe, with one dot drawn for each person counted by the Census, color-coded by race.

Duncombe 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 Duncombe, that probability was 17.6% in 2020 and 17.9% in the most recent ACS estimates.

Duncombe is ranked the 551st 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). Duncombe was ranked the 518th most populous place in the 2020 Census.

Duncombe's White Population

340 residents of Duncombe, or 90.4% of the population, identify as White. The share of White residents in Duncombe is higher than in Iowa overall, where 82.3% of the population is White. Duncombe ranks 709th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Duncombe's White population has declined by an estimated 1.4%. White residents' share of Duncombe's population has remained roughly unchanged at 90.4%.

Duncombe is more White than neighboring Coalville (83.4% White), Otho (87.1% White), and Webster City (76.5% White). Duncombe is less White than neighboring Vincent (95.7% White), and Lehigh (97.9% White).

Duncombe's Black Population

0 residents of Duncombe, or 0.0% of the population, identify as Black. The share of Black residents in Duncombe is slightly lower than in Iowa overall, where 3.8% of the population is Black. Duncombe ranks 510th statewide in terms of Black residents as a share of the population, out of 1,026 places.

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

Duncombe is less Black than neighboring Coalville (2.2% Black), Otho (1.3% Black), and Webster City (1.2% Black).

Duncombe's Asian Population

11 residents of Duncombe, or 2.9% of the population, identify as Asian. The share of Asian residents in Duncombe is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Duncombe ranks 185th statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Duncombe's Asian population has grown by an estimated 266.7%. Asian residents' share of Duncombe's population has increased from 0.8% to 2.9%.

Duncombe is more Asian than neighboring Vincent (0% Asian), Lehigh (0.9% Asian), Coalville (0% Asian), and Otho (0% Asian). Duncombe is less Asian than neighboring Webster City (3.7% Asian).

Duncombe's Hispanic Population

9 residents of Duncombe, or 2.4% of the population, identify as Hispanic. The share of Hispanic residents in Duncombe is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Duncombe ranks 201st statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Duncombe's Hispanic population has declined by an estimated 57.1%. Hispanic residents' share of Duncombe's population has decreased from 5.5% to 2.4%.

Duncombe is more Hispanic than neighboring Vincent (1.9% Hispanic), and Lehigh (0% Hispanic). Duncombe is less Hispanic than neighboring Coalville (12.3% Hispanic), Otho (6.8% Hispanic), and Webster City (17% Hispanic).

Duncombe's Native American/Other Population

0 residents of Duncombe, 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 Duncombe is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Duncombe 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, Duncombe's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of Duncombe's population has remained roughly unchanged at 0.0%.

Duncombe is less Native American/Other than neighboring Lehigh (0.3% Native American/Other), and Webster City (0.4% Native American/Other).

Duncombe's Multiracial Population

16 residents of Duncombe, or 4.3% of the population, identify as Multiracial. The share of Multiracial residents in Duncombe is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Duncombe ranks 448th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Duncombe's Multiracial population has grown by an estimated 45.5%. Multiracial residents' share of Duncombe's population has increased from 2.9% to 4.3%.

Duncombe is more Multiracial than neighboring Vincent (2.5% Multiracial), Lehigh (0.9% Multiracial), Coalville (2.2% Multiracial), and Webster City (1.3% Multiracial). Duncombe is less Multiracial than neighboring Otho (4.7% 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.