San Isidro, Texas
11 topographic sheets cover this place, the earliest surveyed in 1939 and the latest in 1992. It stands in the Rio Grande City census division. It lies in ZIP code area 78588. The Survey maps it on the San Isidro quadrangle. 187 people lived here at the 2020 count. It stands 282 feet above sea level.
Population over time
3 figuresSan Isidro fell from 270 to 187 between 2000 and 2020. These are the recorded population figures Wikidata holds for this place, reached through the Geographic Names Information System number this page is keyed on rather than by name, so they belong to this place and not to another of the same name. Most are census counts, but not all are: an early figure may be a founding or settlement estimate, and an estimate published within five years of a census is left out. The change column is computed, and is left blank where more than 20 years separate a figure from the one before it, because a gap that long is not a change between two counts.
| Year | People | Change |
|---|---|---|
| 2000 | 270 | |
| 2010 | 240 | -30 (-11%) |
| 2020 | 187 | -53 (-22%) |
Topographic sheets covering this place
9 surveys from 11 printed sheetsMatched by testing this settlement's coordinate against the published boundary of every sheet in the United States Geological Survey's historical collection. Each opens the scanned sheet at the Survey.
- 1939 USGS La Reforma quadrangle1:62500
- 1949 USGS Mc Allen quadrangle1:250000
- 1954 USGS McAllen quadrangle1:250000
- 1957 USGS Mc Allen quadrangle1:250000, 2 printings
- 1962 USGS McAllen quadrangle1:250000
- 1972 USGS San Isidro quadrangle1:24000, 2 printings
- 1983 USGS Mc Allen quadrangle1:250000
- 1985 USGS Encino quadrangle1:100000
- 1992 USGS Encino quadrangle1:100000
Fires near this place
15 since 2005Regional context, not property-specific evidence. The federal wildfire occurrence database lists 15 fires within 5 miles of San Isidro between 2005 and 2019, burning about 3,737 acres in total. None started naturally. 2 were recorded as arson. Distance is straight-line from the map coordinates, so a fire counted here may appear on a neighbouring settlement's page as well.
| Reported cause | Fires |
|---|---|
| Missing data/not specified/undetermined | 9 |
| Debris and open burning | 3 |
| Arson/incendiarism | 2 |
| Equipment and vehicle use | 1 |
The most recent of them, most recent first, with the day each was reported and the service that recorded it.
| Date | Cause | Size | Reported by | Name on the report |
|---|---|---|---|---|
| 15 September 2017 | Debris and open burning | 100 acres | Texas A & M Forest Service | FM 2294 RD. |
| 11 August 2015 | Missing data/not specified/undetermined | 100 acres | Lower Rio Grande Valley National Wildlife Refuge | DELMITA |
| 9 June 2016 | Debris and open burning | 15 acres | Texas A & M Forest Service | FM 755 RD |
| 5 June 2018 | Missing data/not specified/undetermined | 125 acres | Texas A & M Forest Service | SANTA ELANA |
| 21 May 2005 | Arson/incendiarism | 2,200 acres | South Texas Refuge Complex | YZAGUIRRE |
| 20 April 2009 | Debris and open burning | 520 acres | Texas A & M Forest Service | DELMITA FIRE |
| 20 April 2009 | Missing data/not specified/undetermined | 150 acres | South Texas Refuge Complex | HINOJOSA |
| 6 March 2019 | Equipment and vehicle use | 75 acres | Texas A & M Forest Service | SAN ISIDRO |
Settlements close enough to share some of these fires:
Storms near this place
4 since 1997Regional context, not property-specific evidence. The National Weather Service names San Isidro in 4 storm reports between 1997 and 2025: 2 thunderstorm wind, 1 hail, 1 flash flood. No death or injury is recorded in these reports. Each account below is quoted exactly as the forecast office filed it, from the NOAA Storm Events Database, and each date opens the federal record of that event.
| When | Event | Place named | Harm | What the report says |
|---|---|---|---|---|
| March 2025 | Flash Flood | San Isidro | - | Texas Department of Transportation reported water of unknown depth was reported in an elementary school. Photos suggested the water depth was 2 feet outside the building, and up to 1 foot inside. Damage estimates were unknown at the time of this writing. |
| April 2012 | Thunderstorm Wind | San Isidro | - | Wind gust up to 60 mph was reported by a Co-op observer near San Isidro. |
| May 2007 | Thunderstorm Wind | San Isidro | - | Local media reported several large tree limbs down along Highway 1017 in San Isidro. |
| June 1997 | Hail | San Isidro | - | no account filed |
Nearest settlements
The eight closest, with where each one stands in the county. Distances are straight-line, computed from the Geographic Names Information System coordinates.
| Map | Place | Distance | Sheets |
|---|---|---|---|
| Gloria Colonia | 1.0 miles | 11 | |
| Old Santa Elena | 1.3 miles | 11 | |
| El Centro | 2.7 miles | 11 | |
| Delmita | 3.3 miles | 11 | |
| Santa Elena | 3.5 miles | 11 | |
| La Gloria | 3.6 miles | 10 | |
| Arkansas City | 4.0 miles | 11 | |
| La Reforma | 4.7 miles | 11 |
Elsewhere
Matched on this settlement's Geographic Names Information System number rather than its name, so it cannot be a different place of the same name in another state.
| Wikipedia article on San Isidro | An encyclopaedic summary. Its text is share-alike, so it is linked here rather than copied. |
| Wikidata item Q974459 | The structured record the population and elevation above come from. Public domain (CC0). |
Provenance
This settlement is recorded in the Geographic Names Information System as feature 1346363. The sheet list is computed by point-in-boundary test against the United States Geological Survey's historical topographic inventory. Both are works of the United States government and carry no copyright under 17 U.S.C. 105.
Wildfire. Short, Karen C. 2022. Spatial wildfire occurrence data for the United States, 1992-2020 [FPA_FOD_20221014]. 6th Edition. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2013-0009.6 Collected with United States Government funding and usable without additional permissions or fees.
Storms. NOAA National Centers for Environmental Information, Storm Events Database https://www.ncei.noaa.gov/stormevents/ A work of the United States government, no copyright under 17 U.S.C. 105. Narratives are quoted verbatim from the National Weather Service report and are not edited or summarised.








