Weldon Spring, MO Demographics

A map of Weldon Spring's Population by Race

Weldon Spring, Missouri has an estimated population of 5,310, a less than 1% change from the 5,326 recorded in the 2020 Census. The population is 93.9% White, 3.8% Asian, 1.0% Multiracial, 0.8% Black, 0.5% Native American/Other, and 0.0% Hispanic. This demographic dot map shows the population of Weldon Spring, with one dot drawn for each person counted by the Census, color-coded by race.

Weldon Spring has become less racially diverse since the 2020 Census. It is considerably less diverse than Missouri overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Weldon Spring, that probability was 15.0% in 2020 and 11.7% in the most recent ACS estimates.

Weldon Spring is ranked the 140th most populous place in Missouri, out of 1,082 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). Weldon Spring was ranked the 137th most populous place in the 2020 Census.

Weldon Spring's White Population

4,984 residents of Weldon Spring, or 93.9% of the population, identify as White. The share of White residents in Weldon Spring is significantly higher than in Missouri overall, where 76.3% of the population is White. Weldon Spring ranks 335th statewide in terms of White residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Weldon Spring's White population has grown by an estimated 1.6%. White residents' share of Weldon Spring's population has increased from 92.1% to 93.9%.

Weldon Spring is more White than neighboring Weldon Spring Heights (90.1% White), Cottleville (80.6% White), St. Peters (85% White), Chesterfield (73.6% White), and Dardenne Prairie (85.1% White).

Weldon Spring's Black Population

40 residents of Weldon Spring, or 0.8% of the population, identify as Black. The share of Black residents in Weldon Spring is considerably lower than in Missouri overall, where 10.9% of the population is Black. Weldon Spring ranks 342nd statewide in terms of Black residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Weldon Spring's Black population has declined by an estimated 48.7%. Black residents' share of Weldon Spring's population has decreased from 1.5% to 0.8%.

Weldon Spring is more Black than neighboring Weldon Spring Heights (0% Black). Weldon Spring is less Black than neighboring Cottleville (7.1% Black), St. Peters (4.6% Black), Chesterfield (3.8% Black), and Dardenne Prairie (3.4% Black).

Weldon Spring's Asian Population

204 residents of Weldon Spring, or 3.8% of the population, identify as Asian. The share of Asian residents in Weldon Spring is comparable to the share in Missouri overall, where 2.1% of the population is Asian. Weldon Spring ranks 108th statewide in terms of Asian residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Weldon Spring's Asian population has grown by an estimated 114.7%. Asian residents' share of Weldon Spring's population has increased from 1.8% to 3.8%.

Weldon Spring is more Asian than neighboring Weldon Spring Heights (1.7% Asian), Cottleville (1.3% Asian), and St. Peters (2.6% Asian). Weldon Spring is less Asian than neighboring Chesterfield (13.2% Asian), and Dardenne Prairie (5.6% Asian).

Weldon Spring's Hispanic Population

0 residents of Weldon Spring, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Weldon Spring is lower than in Missouri overall, where 5.2% of the population is Hispanic. Weldon Spring ranks 757th statewide in terms of Hispanic residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Weldon Spring's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Weldon Spring's population has decreased from 1.5% to 0.0%.

Weldon Spring is less Hispanic than neighboring Cottleville (3.5% Hispanic), St. Peters (2.9% Hispanic), Chesterfield (3.3% Hispanic), and Dardenne Prairie (3.3% Hispanic).

Weldon Spring's Native American/Other Population

28 residents of Weldon Spring, or 0.5% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Weldon Spring is comparable to the share in Missouri overall, where 0.7% of the population is Native American/Other. Weldon Spring ranks 784th statewide in terms of Native American/Other residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Weldon Spring's Native American/Other population has grown by an estimated 211.1%. Native American/Other residents' share of Weldon Spring's population has remained roughly unchanged at 0.5%.

Weldon Spring is more Native American/Other than neighboring Weldon Spring Heights (0% Native American/Other), St. Peters (0.2% Native American/Other), and Dardenne Prairie (0% Native American/Other). Weldon Spring is less Native American/Other than neighboring Cottleville (1.2% Native American/Other), and Chesterfield (0.6% Native American/Other).

Weldon Spring's Multiracial Population

54 residents of Weldon Spring, or 1.0% of the population, identify as Multiracial. The share of Multiracial residents in Weldon Spring is slightly lower than in Missouri overall, where 4.8% of the population is Multiracial. Weldon Spring ranks 858th statewide in terms of Multiracial residents as a share of the population, out of 1,082 places.

Since the 2020 Census, Weldon Spring's Multiracial population has declined by an estimated 66.3%. Multiracial residents' share of Weldon Spring's population has decreased from 3.0% to 1.0%.

Weldon Spring is less Multiracial than neighboring Weldon Spring Heights (8.3% Multiracial), Cottleville (6.3% Multiracial), St. Peters (4.6% Multiracial), Chesterfield (5.5% Multiracial), and Dardenne Prairie (2.6% 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.