Zip Code 78240 — San Antonio, TX

ZIP Code 78240 is associated with San Antonio, TX, in Bexar County. The listed population estimate is 57,921; estimated density is 2,001.7 people per square mile. Among records with population estimates, it ranks #8 of 69 in Bexar County and #88 of 1,924 in TX.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (29.524400, -98.608130)

Data MetricLocal Statistic
Postal / Zip Code78240
Primary CitySan Antonio
State / ProvinceTX
CountyBexar
Total Population57,921
Population Density2,001.7 people/sq mi
TimezoneAmerica/Chicago

How 78240 Compares

MetricZIP 78240Bexar County recordsTX records
Population estimate57,9212,079,418 (sum)30,188,035 (sum)
Population Density2,001.7 /sq mi----
County population rank#8 of 69----
State population rank#88 of 1,924----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in TX

ZIP CodeCityDistancePopulation estimate
ZIP 78229San Antonio2.5 mi35,664
ZIP 78249San Antonio3.0 mi63,439
ZIP 78230San Antonio3.5 mi41,387
ZIP 78238San Antonio3.8 mi26,032
ZIP 78250San Antonio3.8 mi57,323

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →