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ZIP Code Database - Facts & Stats

Data Last Updated: March 1, 2023

ZIP Codes for City of Seguin, TX

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Area Code(s):830
Timezone(s):Central (GMT -06:00)
City Population:25,175 (More Details)
CBSA:San Antonio-New Braunfels, TX
Congressional District(s):15, 28
Land Area:711 square miles (county)
Water Area:4 square miles (county)

2 ZIP Codes

Seguin, TX ZIP Code Boundaries

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Seguin, TX Covers 2 ZIP Codes

ZIP CodeTypePopulation% of PopulationAliases
78155Standard45,341100.00%NEW BERLIN
78156P.O. Box00.00%

Seguin, TX Demographic Information *

Total population**25,175
Male population12,169
Female population13,006
Median age (years)35.3
White Population19,114
Black Population2,026
Indian Population138
Asian Population222
Hawaiian Population10
Hispanic Population13,938
Median age (Male)32.9
Median age (Female)37.7
Total households8,794
Family households (families)5,968
Average household size2.68
Average family size3.25
Total housing units9,714
* Demographic data is based on 2010 Census for the City of SEGUIN.
** City and ZIP Code Population will not be equal due to differences in their geographies.


  1. U.S. Postal Service [Last Updated: 2/1/2023],
  2. Internal Data Creation [Last Updated: 2/1/2023],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],