San Isidro, Texas Demographics & Population 2026

A note before these figures: with a population of 214, San Isidro's ACS estimates come from a small number of survey responses and carry wide margins of error. Individual percentages below — particularly rates that round to 0% or 100% — are approximations, not precise measurements. See data.census.gov for the published margins of error.

Population Overview

San Isidro is a small community located in Texas, within Starr County. The total population is 214. It ranks as the 1539th most populous out of 1,795 Census-designated places in Texas.

Age Demographics

The median age in San Isidro is 51.7 years. This is 45% higher than the state median of 35.6 years. 14.0% of residents are 75 or older, suggesting a significant retirement-age population with implications for healthcare services and senior housing.

Economy, Income & Housing

The poverty rate stands at 14.9%. This is 8% higher than the state poverty rate of 13.8%. The unemployment rate is 5.8%. This is 10% higher than the state rate of 5.3%. The median home value is $47,100. Housing costs are 83% lower than the state median of $283,800. 80.2% of occupied housing units are owner-occupied. This homeownership rate is 28% higher than the state average of 62.6%.

Race & Ethnicity

San Isidro has a predominantly Hispanic or Latino population, comprising 97.7% of all residents. White (non-Hispanic) residents account for 2.3%. The White (non-Hispanic) population (2.3%) is well below the state average of 39.1%. The Hispanic or Latino population is significantly higher than the state average (97.7% vs 39.7%).

Education

26.3% of residents aged 25 and older hold a bachelor's degree or higher. This is 22% lower than the state rate of 33.8%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 79.5%. Notably, 17.9% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All demographic data for San Isidro, Texas is sourced from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates. The ACS collects data from approximately 3.5 million households annually and pools five years of responses so that even small communities can be measured, though the margin of error widens as the population falls. Comparisons are made against Texas state averages and national averages calculated from the same dataset. Rankings reflect the city's position among all 1,795 Census-designated places in Texas. Read more about how these figures are produced on our methodology page, or visit data.census.gov for official data.