US ZIP Code
78155

Seguin, TX

Guadalupe County  ·  Texas

● Active
👥 53,449 Population ↑ 9% since 2019
💰 $71,367 Median HH Income
≈ Avg ↑ 23% since 2019
🎂 39.4 Median Age ↑ 5% since 2019
🏠 $246,000 Median Home Value
▼ 12% below avg ↑ 57% since 2019
🎓 32.2% College Grads
▼ 17% below avg
📊 3.4% Unemployment
▼ 30% below avg ↓ 13% since 2019
ZIP Code Details
ZIP Code78155
CitySeguin
StateTexas (TX)
CountyGuadalupe County
Area Code830
Elevation519 ft
Latitude29.537496
Longitude-97.936596
TimezoneChicago (DST)
FIPS48187
ZIP TypeStandard
StatusActive
People & Population (ACS 2023)
♂ Male 50.1% (26,794) Female 49.9% (26,655) ♀

Race & Ethnicity

White: 42.6%Hispanic: 48.7%Black: 4.6%Asian: 0.6%Other: 2.6%Race
White42.6%
Hispanic48.7%
Black4.6%
Asian0.6%
Other2.6%

Age Breakdown

Under 5
6%
5–17
16%
18–24
9%
25–44
27%
45–64
25%
65+
8%

Key Indicators

Median Age39.4 yrs ↑ 5% since 2019
Avg Household Size2.58
Below Poverty16.5% ▲ 65% above avg
College Grads32.2% ▼ 17% below avg
Unemployment3.4% ▼ 30% below avg
No HS Diploma1,271 (3.8%)
HS Graduate11,955 (35.9%)
Some College5,149 (15.5%)
Associates4,191 (12.6%)
Bachelors2,605 (7.8%)
Graduate Degree8,111 (24.4%)

Education

No HS: 3.8%HS Grad: 35.9%Some College: 15.5%Associates: 12.6%Bachelors: 7.8%Graduate: 24.4%Edu
No HS3.8%
HS Grad35.9%
Some College15.5%
Associates12.6%
Bachelors7.8%
Graduate24.4%
Housing & Income

Housing Tenure

Owner: 73.1%Renter: 26.9%Tenure
Owner73.1%
Renter26.9%

Home Value Distribution

Under $50k
10%
$50k–100k
9%
$100k–150k
9%
$150k–200k
10%
$200k–300k
26%
$300k–500k
25%
Over $500k
12%

Financials

Median HH Income$71,367 ≈ Avg ↑ 23% since 2019
Median Home Value$246,000 ▼ 12% below avg ↑ 57% since 2019
Home/Income Ratio3.4x (nat avg ~3.5x)
Median Rent$1,149/mo ↑ 28% since 2019
Total Units21,791
Vacant Units1,713
Avg HH Size2.58

Income Distribution

Under $25k
15%
$25k–50k
18%
$50k–75k
18%
$75k–100k
12%
$100k–150k
20%
$150k–200k
9%
Over $200k
9%
Employment & Commute

How People Get to Work

Drove Alone
88%
Public Transit
0%
Walked
2%
Work From Home
10%

Commute Time

Under 15 min
32%
15–30 min
32%
30–45 min
17%
Over 45 min
19%
Housing Stock

Year Built

Before 1940
2%
1940s–1950s
7%
1960s–1970s
13%
1980s–1990s
17%
2000+
61%

Summary

Total Units21,791
Vacant1,713
Owner Occupied73.1%
Renter Occupied26.9%
Avg HH Size2.58
Frequently Asked Questions
ZIP code 78155 is in Seguin, TX, in Guadalupe County.
ZIP code 78155 is located in Texas (TX).
ZIP code 78155 is in Guadalupe County, TX.
ZIP 78155 observes the Chicago timezone. Daylight Saving Time is observed.
The estimated population of ZIP code 78155 is 53,449 people (ACS 2023).
The median household income in ZIP code 78155 is $71,367 (ACS 2023).
The median home value in ZIP 78155 is $246,000 (ACS 2023).
About ZIP Code 78155

ZIP code 78155 is located in Seguin, Texas, within Guadalupe County. With a population of 53,449, this is a highly populated ZIP code with a middle-aged community — the median age is 39.4 years. Economically, 78155 is a solidly middle-class ZIP code: the median household income of $71,367 is near the national average.

Real estate in ZIP code 78155 represents an affordable housing market. The median home value of $246,000 is near the national average. Renters can expect to pay around $1,149 per month in median rent. Homeownership is strong here — 73.1% of occupied units are owner-occupied, suggesting an established, stable residential community. Median home values have increased by 57% since 2019.

The population of 78155 is racially diverse, with Hispanic as the largest group at 48.7%. Residents are moderately educated — 32.2% hold a bachelor's degree or higher, which is below the national average. Poverty affects some residents at 16.5%. Household income has grown by 23% since 2019.

The unemployment rate in 78155 stands at 3.4%, which is below the national average. As in most parts of the country, driving alone is the dominant commute mode at 78%.

Overall, ZIP code 78155 in Seguin, TX is characterized as solidly middle-class, moderately educated, a middle-aged community, and predominantly owner-occupied. With 53,449 residents, a median household income of $71,367, and a median home value of $246,000, it offers a clear picture of life in this part of Texas.