Home > TX > Bexar County > San Antonio > Zip 78243

Zip Code 78243 — San Antonio, TX

ZIP Code 78243 is associated with San Antonio, TX, in Bexar County. The listed population estimate is 232; estimated density is 139.4 people per square mile. Among records with population estimates, it ranks #69 of 69 in Bexar County and #1723 of 1,924 in TX.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (29.372130, -98.593490)

Data MetricLocal Statistic
Postal / Zip Code78243
Primary CitySan Antonio
State / ProvinceTX
CountyBexar
Total Population232
Population Density139.4 people/sq mi
TimezoneAmerica/Chicago

How 78243 Compares

MetricZIP 78243Bexar County recordsTX records
Population estimate2322,079,418 (sum)30,188,035 (sum)
Population Density139.4 /sq mi----
County population rank#69 of 69----
State population rank#1723 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 78242San Antonio1.7 mi36,168
ZIP 78226San Antonio1.7 mi6,554
ZIP 78236Jbsa Lackland2.0 mi7,635
ZIP 78211San Antonio2.5 mi30,857
ZIP 78227San Antonio3.3 mi44,035

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 →