Walnut, IA Demographics

A map of Walnut's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,282	701	95.5%	93.8%
Hispanic	45	16	3.4%	2.1%
Black	9	1	0.7%	0.1%
Multiracial	6	19	0.4%	2.5%
Asian	0	5	0.0%	0.7%
Native American/Other	0	5	0.0%	0.7%

Walnut, Iowa has an estimated population of 1,342, a dramatic increase from the 747 recorded in the 2020 Census. The population is 95.5% White, 3.4% Hispanic, 0.7% Black, 0.4% Multiracial, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Walnut, with one dot drawn for each person counted by the Census, color-coded by race.

Walnut 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 Walnut, that probability was 11.8% in 2020 and 8.6% in the most recent ACS estimates.

Walnut is ranked the 234th 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). Walnut was ranked the 361st most populous place in the 2020 Census.

Walnut's White Population

1,282 residents of Walnut, or 95.5% of the population, identify as White. The share of White residents in Walnut is considerably higher than in Iowa overall, where 82.3% of the population is White. Walnut ranks 416th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Walnut's White population has grown by an estimated 82.9%. White residents' share of Walnut's population has increased from 93.8% to 95.5%.

Walnut is more White than neighboring Avoca (93.8% White), Corley (0% White), Jacksonville (0% White), and Hancock (90.7% White). Walnut is less White than neighboring Marne (96.9% White).

Walnut's Black Population

9 residents of Walnut, or 0.7% of the population, identify as Black. The share of Black residents in Walnut is slightly lower than in Iowa overall, where 3.8% of the population is Black. Walnut ranks 572nd statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Walnut's Black population has grown by an estimated 800.0%. Black residents' share of Walnut's population has increased from 0.1% to 0.7%.

Walnut is more Black than neighboring Marne (0% Black), Avoca (0% Black), Corley (0% Black), and Jacksonville (0% Black). Walnut is less Black than neighboring Hancock (4.2% Black).

Walnut's Asian Population

0 residents of Walnut, or 0.0% of the population, identify as Asian. The share of Asian residents in Walnut is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Walnut ranks 221st statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Walnut's Asian population has declined by an estimated 100.0%. Asian residents' share of Walnut's population has decreased from 0.7% to 0.0%.

Walnut is less Asian than neighboring Avoca (1.1% Asian).

Walnut's Hispanic Population

45 residents of Walnut, or 3.4% of the population, identify as Hispanic. The share of Hispanic residents in Walnut is slightly lower than in Iowa overall, where 7.3% of the population is Hispanic. Walnut ranks 596th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Walnut's Hispanic population has grown by an estimated 181.3%. Hispanic residents' share of Walnut's population has increased from 2.1% to 3.4%.

Walnut is more Hispanic than neighboring Marne (0% Hispanic), Avoca (3% Hispanic), Corley (0% Hispanic), Jacksonville (0% Hispanic), and Hancock (0% Hispanic).

Walnut's Native American/Other Population

0 residents of Walnut, 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 Walnut is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Walnut ranks 235th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Walnut's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Walnut's population has decreased from 0.7% to 0.0%.

Walnut is less Native American/Other than neighboring Avoca (0.7% Native American/Other), and Hancock (2.8% Native American/Other).

Walnut's Multiracial Population

6 residents of Walnut, or 0.4% of the population, identify as Multiracial. The share of Multiracial residents in Walnut is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Walnut ranks 552nd statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Walnut's Multiracial population has declined by an estimated 68.4%. Multiracial residents' share of Walnut's population has decreased from 2.5% to 0.4%.

Walnut is more Multiracial than neighboring Corley (0% Multiracial), and Jacksonville (0% Multiracial). Walnut is less Multiracial than neighboring Marne (3.1% Multiracial), Avoca (1.4% Multiracial), and Hancock (2.3% 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.