Home > TX > Caldwell County > Lockhart > Zip 78644

Zip Code 78644 — Lockhart, TX

78644 is a ZIP Code associated with Lockhart, TX, located within Caldwell. The postal region supports an estimated population of 22,348 residents across Data Pending housing units, with a population density of 48.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (29.871110, -97.672920)

Data MetricLocal Statistic
Postal / Zip Code78644
Primary CityLockhart
State / ProvinceTX
CountyCaldwell
Total Population22,348
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density48.0 people/sq mi
TimezoneAmerica/Chicago

How 78644 Compares

MetricZIP 78644Caldwell CountyTX State Average
Population22,34848,63730,188,035
Median IncomeData PendingN/AN/A
Population Density48.0 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 78616Dale8.0 mi10,683N/A
Zip 78656Maxwell8.4 mi2,847N/A
Zip 78622Fentress9.5 mi331N/A
Zip 78655Martindale10.3 mi3,730N/A
Zip 78661Prairie Lea10.6 mi835N/A

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 →