South Alamo is a census-designated place (CDP) in Hidalgo County, Texas, United States. The area is known locally as "Little Mex (Mexico)". The population was 3,414 at the 2020 United States Census. It is part of the McAllen–Edinburg–Mission Metropolitan Statistical Area.
Geography
South Alamo is located at (26.150741, -98.111956).
According to the United States Census Bureau, the CDP has a total area of , all land.
Demographics
South Alamo first appeared as a census designated place in the 2000 U.S. census.
!Pop 2010
!
!% 2000
!% 2010
!
|-
|White alone (NH)
|47
|32
|style='background: #ffffe6; |38
|1.52%
|0.95%
|style='background: #ffffe6; |1.11%
|-
|Black or African American alone (NH)
|0
|0
|style='background: #ffffe6; |3
|0.00%
|0.00%
|style='background: #ffffe6; |0.09%
|-
|Native American or Alaska Native alone (NH)
|0
|0
|style='background: #ffffe6; |0
|0.00%
|0.00%
|style='background: #ffffe6; |0.00%
|-
|Asian alone (NH)
|1
|1
|style='background: #ffffe6; |8
|0.03%
|0.03%
|style='background: #ffffe6; |0.23%
|-
|Native Hawaiian or Pacific Islander alone (NH)
|0
|0
|style='background: #ffffe6; |1
|0.00%
|0.00%
|style='background: #ffffe6; |0.03%
|-
|Other race alone (NH)
|1
|0
|style='background: #ffffe6; |8
|0.03%
|0.00%
|style='background: #ffffe6; |0.23%
|-
|Mixed race or Multiracial (NH)
|1
|0
|style='background: #ffffe6; |11
|0.03%
|0.00%
|style='background: #ffffe6; |0.32%
|-
|Hispanic or Latino (any race)
|3,051
|3,328
|style='background: #ffffe6; |3,345
|98.39%
|99.02%
|style='background: #ffffe6; |97.98%
|-
|Total
|3,101
|3,361
|style='background: #ffffe6; |3,414
|100.00%
|100.00%
|style='background: #ffffe6; |100.00%
|}
2020 census
As of the 2020 census, South Alamo had a population of 3,414. The median age was 28.2 years. 32.8% of residents were under the age of 18 and 9.0% of residents were 65 years of age or older. For every 100 females there were 100.0 males, and for every 100 females age 18 and over there were 95.1 males age 18 and over.
86.6% of residents lived in urban areas, while 13.4% lived in rural areas.
There were 801 households in South Alamo, of which 55.1% had children under the age of 18 living in them. Of all households, 54.7% were married-couple households, 14.7% were households with a male householder and no spouse or partner present, and 26.0% were households with a female householder and no spouse or partner present. About 10.1% of all households were made up of individuals and 4.9% had someone living alone who was 65 years of age or older.