San Isidro, TX Profile: Facts, Map & Data


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San Isidro, Texas - Basic Facts

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The San Isidro Census Designated Place had a population of 259 as of July 1, 2017. San Isidro ranks in the lower quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Texas. See peer rankings below.

The primary coordinate point for San Isidro is located at latitude 26.7136 and longitude -98.4479 in Starr County. The formal boundaries for the San Isidro Census Designated Place (see map below) encompass a land area of 3.1 sq. miles and a water area of 0 sq. miles. Starr County is in the Central time zone (GMT -6). The elevation is 285 feet.

The San Isidro Census Designated Place (GNIS ID: 2409257) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

Texas is one of 20 states where Census County Divisions (CCDs) are used for statistical tracking of subdivisions within each county. The San Isidro Census Designated Place is located within Rio Grande City Division of Starr County.

Beneath the boundary map are tables with San Isidro population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for San Isidro: Sanisidro.

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San Isidro Census Designated Place, TX Boundary Map

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Boundary Maps: Rio Grande City Division | Starr County | Texas Counties

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San Isidro, TX Data & Demographics (As of July 1, 2017)


Total Population 259
Daytime Population: Workers 312
Daytime Population: Residents 163
Total Daytime Population (TDP) 475
Ratio TDP/Total Population1 1.83
Population in Households 259
Population in Familes 219
Population in Group Qrtrs 0
Population Density2 84
Diversity Index3 30


Median Household Income $34,361
Average Household Income $68,050
Per Capita Income $26,178


Total Housing Units 120 (100%)
Owner Occupied HU 82 (68.3%)
Renter Occupied HU 14 (11.7%)
Vacant Housing Units 23 (19.2%)
Median Home Value $54,808
Average Home Value $88,855


Total Households 97
Average Household Size 2.67
Family Households 65
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 1.06% 1.06%
Households 1.19% 1.01%
Families -0.21% 1.2%
Median Household Income   2.69%
Per Capita Income   3.35%

San Isidro, TX - Peer Comparisons by Rank and Percentile

The table below compares San Isidro to the other 1,749 incorporated cities, towns and CDPs in Texas by rank and percentile using July 1, 2017 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 1479 16th
Population Density # 1660 5th
Diversity Index # 1391 21st
Median Household Income # 1432 18th
Per Capita Income # 653 63rd

Additional comparisons and rankings can be made with a VERY EASY TO USE Texas Census Data Comparison Tool.

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