Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — CITY/TX/SEGUIN

Seguin ZIP codes, Texas

Seguin, TX has 2 ZIP codes (78155 and 78156) and area code 830. The largest is 78155.

USPS city name
2 ZIP codes
Overlapping the city
2 more
Population
33,754
Area code
830
State
Texas

Mail addressed to Seguin uses the ZIP codes above. 2 more ZIP codes cover part of the city but are addressed as somewhere else; they are listed separately below.

Seguin in numbers

About 33,754 people live in Seguin, in 12,483 households. The median household income is $64,861 a year, 17% below the Texas median of $78,476 (US: $80,734). The median owner-occupied home is valued at $249,400 (12% below the Texas median), and median gross rent is $1,187 a month. The median age is 37.1; 19.2% of adults 25 and over hold a bachelor's degree or higher (33.8% across Texas); the average commute takes 25 minutes.

Population33,754Seguin33,754
Households12,483Seguin12,483
Median age37.1Seguin37.1Texas35.6US 38.9
Median household income$64,861Seguin$64,861Texas$78,476US $80,734
Median home value$249,400Seguin$249,400Texas$283,800US $332,700
Median gross rent$1,187Seguin$1,187Texas$1,403US $1,413
Bachelor's degree or higher19.2%Seguin19.2%Texas33.8%US 35.7%
Mean commute24.7 minSeguin24.7 minTexas26.7 minUS 26.4 min
Population density843 / sq miSeguin843 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, for the census place Seguin city. Survey estimates carry margins of error, wider for small places. Sources and methods.

ZIP codes addressed as Seguin

ZIP codes with the USPS city name Seguin
ZIP City Type Population Median income Median home
78155 Seguin , TX Standard 55,600 $71,039 $266,700
78156 Seguin , TX No street area — — —

Other ZIP codes overlapping Seguin

These ZIP codes cover part of Seguin but are addressed as somewhere else.

ZIP codes overlapping Seguin
ZIP City Type Population Median income Median home
78123 Mc Queeney , TX Standard 2,127 $97,553 $238,500
78638 Kingsbury , TX Standard 2,135 $69,250 $317,400

Map of Seguin ZIP codes

7815578156

The ZIP codes of Seguin, TX, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

Towns near Seguin

The nearest larger towns are New Braunfels (104,643 people, 12 mi), Cibolo (35,109 people, 15 mi) and Schertz (44,050 people, 17 mi).

Towns near Seguin
TownPopulationDistance
New Braunfels 104,643 11.6 mi
Cibolo 35,109 15.0 mi
Redwood 3,441 15.6 mi
Schertz 44,050 17.1 mi
San Marcos 70,897 19.7 mi
Garden Ridge 4,332 19.7 mi
Luling 5,531 20.3 mi
Universal City 20,189 20.5 mi
Selma 11,503 20.8 mi
Converse 29,607 20.9 mi
Live Oak 15,984 22.4 mi
Windcrest 5,820 25.3 mi
Lockhart 15,326 26.3 mi
Canyon Lake 33,883 26.4 mi

More nearby: every ZIP code in Guadalupe County · Texas ZIP codes

Cite this page

zipcodes.pro. “Seguin, TX ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/city/tx/seguin

Underlying data is public domain or openly licensed — sources, vintages and licences.