Home > TX > Guadalupe County > Seguin > Zip 78155

Zip Code 78155 — Seguin, TX

78155 is a ZIP Code associated with Seguin, TX, located within Guadalupe. The postal region supports an estimated population of 55,600 residents across Data Pending housing units, with a population density of 60.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (29.533050, -97.938320)

Data MetricLocal Statistic
Postal / Zip Code78155
Primary CitySeguin
State / ProvinceTX
CountyGuadalupe
Total Population55,600
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density60.4 people/sq mi
TimezoneAmerica/Chicago

How 78155 Compares

MetricZIP 78155Guadalupe CountyTX State Average
Population55,600219,94230,188,035
Median IncomeData PendingN/AN/A
Population Density60.4 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 78123McQueeney7.8 mi2,127N/A
Zip 78638Kingsbury12.2 mi2,135N/A
Zip 78124Marion12.9 mi6,157N/A
Zip 78130New Braunfels13.5 mi104,009N/A
Zip 78122Leesville14.4 mi338N/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 →