Arnold, MO Demographics

A map of Arnold's Population by Race

Arnold, Missouri had a population of 20,858 in 2020. It was 88.7% White, 0.9% Black, 1.1% Asian, 3.0% Hispanic, 0.5% Native American/Other, and 5.7% Multiracial. This map presents the population of Arnold, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

Of the 1,082 places in Missouri, Arnold is the 36th most populous. 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).

Arnold's White Population

18,511 residents of Arnold identify as White, or 88.7%. This makes the White share of the population of Arnold larger than the White share of the population of Missouri (75.8% White). Of the 1,082 places in Missouri, Arnold is ranked #615 in terms of White residents as a share of the population.

Arnold is more White than neighboring Kimmswick (85% White), and Mehlville (83.6% White). Arnold is less White than neighboring Oakville (89.7% White), Imperial (89.8% White), and Concord (89% White).

Arnold's Black Population

194 residents of Arnold identify as Black, or 0.9%. This makes the Black share of the population of Arnold slightly less than the Black share of the population of Missouri (11.3% Black). Of the 1,082 places in Missouri, Arnold is ranked #419 in terms of Black residents as a share of the population.

Arnold is more Black than neighboring Imperial (0.5% Black), and Kimmswick (0% Black). Arnold is less Black than neighboring Oakville (1.6% Black), and Mehlville (4.5% Black).

Arnold's Asian Population

232 residents of Arnold identify as Asian, or 1.1%. This makes the Asian share of the population of Arnold roughly similar to the Asian share of the population of Missouri (2.1% Asian). Of the 1,082 places in Missouri, Arnold is ranked #170 in terms of Asian residents as a share of the population.

Arnold is less Asian than neighboring Oakville (2% Asian), Imperial (1.4% Asian), Kimmswick (1.5% Asian), Concord (3% Asian), and Mehlville (3.2% Asian).

Arnold's Hispanic Population

636 residents of Arnold identify as Hispanic, or 3.0%. This makes the Hispanic share of the population of Arnold roughly similar to the Hispanic share of the population of Missouri (4.9% Hispanic). Of the 1,082 places in Missouri, Arnold is ranked #376 in terms of Hispanic residents as a share of the population.

Arnold is more Hispanic than neighboring Oakville (2.4% Hispanic), Imperial (2% Hispanic), Kimmswick (0.8% Hispanic), and Concord (2.6% Hispanic). Arnold is less Hispanic than neighboring Mehlville (3.6% Hispanic).

Arnold's Native American/Other Population

103 residents of Arnold identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.5%. This makes the Native American/Other share of the population of Arnold roughly similar to the Native American/Other share of the population of Missouri (0.9% Native American/Other). Of the 1,082 places in Missouri, Arnold is ranked #570 in terms of Native American/Other residents as a share of the population.

Arnold is more Native American/Other than neighboring Oakville (0.4% Native American/Other), and Concord (0.4% Native American/Other). Arnold is less Native American/Other than neighboring Imperial (0.7% Native American/Other), and Kimmswick (2.3% Native American/Other).

Arnold's Multiracial Population

1,182 residents of Arnold identify as Multiracial, or 5.7%. This makes the Multiracial share of the population of Arnold roughly similar to the Multiracial share of the population of Missouri (5% Multiracial). Of the 1,082 places in Missouri, Arnold is ranked #345 in terms of Multiracial residents as a share of the population.

Arnold is more Multiracial than neighboring Oakville (3.8% Multiracial), Imperial (5.6% Multiracial), Concord (4.1% Multiracial), and Mehlville (4.7% Multiracial). Arnold is less Multiracial than neighboring Kimmswick (10.5% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.