South Alamo, TX population, income and ZIP codes

South Alamo CDP is a small town in Texas, with 3,114 residents counted in the Census American Community Survey 2019-2023 ACS 5-year estimates, which places it #557 of 1,863 ranked by population — larger than 70% of them. The median age here is 34.6 years against 39.1 nationally, a slightly younger profile than the country as a whole. At this population the ACS sample is small, so the margin of error around every dollar figure below is wide — treat the numbers as a band, not a point, and expect them to move between annual releases without the place itself changing.

Households in South Alamo CDP earn a median of $33,516 a year, 57.3% below the national figure of $78,538 and 48% below the $64,654 median for the 1,008 Texas cities we cover. The median is the midpoint household, not an average, so a handful of very high earners cannot drag it upward the way they distort a mean. Poverty reaches 30.3% of residents here, well above the 12.4% national rate, which is the single clearest signal in this dataset that median income here is carried by a narrow band of households.

The typical owner-occupied home in South Alamo CDP is valued at $69,700, 77% below the national figure and 61% below the $179,100 peer median, while median gross rent runs $683 a month, 51.4% below the national figure, or roughly $8,196 across a full year. A household on the local median income would put about 24.5% of gross pay toward that rent against the federal 30% cost-burden threshold, so renting here is within the standard affordability guideline. The home-price-to-income ratio works out to 2.1×, against roughly 3.9× nationally, so purchase prices are unusually low against local pay, the pattern in places where supply is plentiful and wage growth has been flat. 87.5% of occupied homes are owner-occupied versus 65% nationally, an owner-dominated market where rental listings are scarce and rent medians rest on a thin sample. Rent is reported gross — contract rent plus tenant-paid utilities — which is why it runs above the advertised price on a listing for the same unit.

Every value on this page is published directly by the Census for this area — nothing is modelled or interpolated. Small-area estimates still carry wider margins of error than state or national figures, so check the linked ACS tables before relying on them for lending, appraisal or legal work.