South Alamo, TX Demographics

A map of South Alamo's Population by Race

South Alamo, Texas has an estimated population of 3,309, a decrease from the 3,414 recorded in the 2020 Census. The population is 95.6% Hispanic, 4.4% White, 0.0% Black, 0.0% Asian, 0.0% Native American/Other, and 0.0% Multiracial. This demographic dot map shows the population of South Alamo, with one dot drawn for each person counted by the Census, color-coded by race.

South Alamo has become more racially diverse since the 2020 Census. It is considerably less diverse than Texas overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In South Alamo, that probability was 4.0% in 2020 and 8.5% in the most recent ACS estimates.

South Alamo is ranked the 538th most populous place in Texas, out of 1,863 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). South Alamo was ranked the 526th most populous place in the 2020 Census.

South Alamo's White Population

147 residents of South Alamo, or 4.4% of the population, identify as White. The share of White residents in South Alamo is significantly lower than in Texas overall, where 39.1% of the population is White. South Alamo ranks 1756th statewide in terms of White residents as a share of the population, out of 1,863 places.

Since the 2020 Census, South Alamo's White population has grown by an estimated 286.8%. White residents' share of South Alamo's population has increased from 1.1% to 4.4%.

South Alamo is more White than neighboring San Juan (2.9% White), Scissors (0.2% White), and North Alamo (4.3% White). South Alamo is less White than neighboring Alamo (11.4% White), and Donna (7.7% White).

South Alamo's Black Population

0 residents of South Alamo, or 0.0% of the population, identify as Black. The share of Black residents in South Alamo is considerably lower than in Texas overall, where 11.9% of the population is Black. South Alamo ranks 1437th statewide in terms of Black residents as a share of the population, out of 1,863 places.

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

South Alamo is less Black than neighboring Alamo (3.5% Black), and Donna (0.1% Black).

South Alamo's Asian Population

0 residents of South Alamo, or 0.0% of the population, identify as Asian. The share of Asian residents in South Alamo is lower than in Texas overall, where 5.5% of the population is Asian. South Alamo ranks 1083rd statewide in terms of Asian residents as a share of the population, out of 1,863 places.

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

South Alamo is less Asian than neighboring Alamo (0.1% Asian), and San Juan (0.2% Asian).

South Alamo's Hispanic Population

3,162 residents of South Alamo, or 95.6% of the population, identify as Hispanic. The share of Hispanic residents in South Alamo is significantly higher than in Texas overall, where 39.7% of the population is Hispanic. South Alamo ranks 98th statewide in terms of Hispanic residents as a share of the population, out of 1,863 places.

Since the 2020 Census, South Alamo's Hispanic population has declined by an estimated 5.5%. Hispanic residents' share of South Alamo's population has decreased from 98.0% to 95.6%.

South Alamo is more Hispanic than neighboring Alamo (84.8% Hispanic), and Donna (91.7% Hispanic). South Alamo is less Hispanic than neighboring San Juan (96.5% Hispanic), Scissors (99.8% Hispanic), and North Alamo (95.7% Hispanic).

South Alamo's Native American/Other Population

0 residents of South Alamo, 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 South Alamo is comparable to the share in Texas overall, where 0.6% of the population is Native American/Other. South Alamo ranks 1376th statewide in terms of Native American/Other residents as a share of the population, out of 1,863 places.

Since the 2020 Census, South Alamo's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of South Alamo's population has remained roughly unchanged at 0.0%.

South Alamo is less Native American/Other than neighboring Donna (0.1% Native American/Other), and San Juan (0.1% Native American/Other).

South Alamo's Multiracial Population

0 residents of South Alamo, or 0.0% of the population, identify as Multiracial. The share of Multiracial residents in South Alamo is slightly lower than in Texas overall, where 3.1% of the population is Multiracial. South Alamo ranks 1604th statewide in terms of Multiracial residents as a share of the population, out of 1,863 places.

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

South Alamo is less Multiracial than neighboring Alamo (0.2% Multiracial), Donna (0.4% Multiracial), and San Juan (0.3% 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.