Postal Codes

78155 ZIP Code

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ZIP code 78155 covers Seguin, Texas, with a population of about 53,449 and a median household income of $71,367.

Population
53,449150 per square mile
Median age
39.40.7 points above the US average
Median household income
$71,3676% below the Texas median
Poverty rate
17%4.6 points above the US average
Typical home value
$272,879up 3.4% in five years
Median rent
$1,14914% below the Texas median
Degree or higher
22.5%12.5 points below the US average
Homeownership
73.1%8.1 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
1,028

Where 78155 is

Seguin, Texas — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population53,449
Median age39.4
Family households68.5%
Born outside the US8.3%
Speaks a language other than English at home26.4%
White (non-Hispanic)42.6%
Black (non-Hispanic)4.6%
Asian (non-Hispanic)0.6%
Hispanic or Latino48.7%
Veterans8.5%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$71,367
Income per person$35,743
Poverty rate17%
Households on SNAP or cash assistance16.5%

Household income distribution

Under $10k4.3%
$10–15k5.0%
$15–20k2.0%
$20–25k3.2%
$25–30k4.5%
$30–35k5.9%
$35–40k3.4%
$40–45k3.8%
$45–50k3.5%
$50–60k7.3%
$60–75k9.8%
$75–100k11.5%
$100–125k9.6%
$125–150k9.5%
$150–200k8.4%
$200k or more8.5%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed26,050
Mean adjusted gross income$70,534
Returns declaring $200,000 or more4%
Returns, under $25k27.7%
Returns, $25k–$50k27.2%
Returns, $50k–$75k16.3%
Returns, $75k–$100k9.8%
Returns, $100k–$200k14.9%
Returns, $200k or more4.0%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$246,000
Median gross rent$1,149
Rent as a share of household income27.6%
Owner-occupied73.1%
Vacant homes7.9%
Median year built1989

What the homes are

Detached house67.8%
Attached house1.1%
2 to 4 units4.6%
5 to 19 units4.7%
20 or more units1.8%
Mobile home18.7%
Boat, RV or van1.2%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$272,879as of 2026-07
Typical home value, 1 yeardown 2%
Typical home value, 5 yearsup 3.4%
Typical home value, 10 yearsup 43.3%
Typical asking rent$1,537as of 2026-07
Typical asking rent, 1 yearup 1.8%
Typical home value since 2000
200920172026$310,374$162,240

$173,051 in 2009 to $272,879 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate3.4%
Bachelor's degree or higher22.5%
High school diploma or higher85.1%
Works from home8.5%
Drives to work alone78.4%
Takes public transport0.3%
Commutes 45 minutes or more19.5%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity36.5% 3.1 pts above the national average of 33.4%
Diagnosed diabetes15.5% 3.5 pts above the national average of 12%
Currently smokes14.8% 1.6 pts above the national average of 13.2%
High blood pressure37.5% 3.4 pts above the national average of 34.1%
Fair or poor general health25.4% 5.1 pts above the national average of 20.3%
No health insurance (18–64)21.3% 10 pts above the national average of 11.3%
Depression22.8% 0.9 pts above the national average of 21.9%
No leisure-time physical activity31% 5.6 pts above the national average of 25.4%
Arthritis27.6% 2.5 pts above the national average of 25.1%
Binge drinking17% 1 pts above the national average of 16%
Taking blood pressure medication77.9% 3.2 pts above the national average of 74.7%
Cancer (non-skin)7.4% same as the national average of 7.7%
Current asthma9.8% 0.6 pts below the national average of 10.4%
Coronary heart disease7.2% 1 pts above the national average of 6.2%
Routine check-up in past year75.6% 1.1 pts below the national average of 76.7%
Cholesterol screening84.8% 1.1 pts below the national average of 85.9%
Cognitive disability16.5% 1.7 pts above the national average of 14.8%
Colorectal screening59.8% 4.5 pts below the national average of 64.3%
COPD7.3% 0.7 pts above the national average of 6.6%
Visited a dentist52% 9.3 pts below the national average of 61.3%
Any disability36.3% 5.6 pts above the national average of 30.7%
Hearing disability8.1% 1.4 pts above the national average of 6.7%
High cholesterol38% 1.8 pts above the national average of 36.2%
Independent living disability9.4% 1 pts above the national average of 8.4%
Mammography use70.7% 5.2 pts below the national average of 75.9%
Poor mental health (14+ days)17.3% 0.5 pts above the national average of 16.8%
Mobility disability17.4% 3.4 pts above the national average of 14%
Poor physical health (14+ days)15.4% 1.9 pts above the national average of 13.5%
Self-care disability4.8% 0.8 pts above the national average of 4%
Sleeps under 7 hours38.1% 1.7 pts above the national average of 36.4%
Stroke3.9% 0.5 pts above the national average of 3.4%
All natural teeth lost15.5% 2.5 pts above the national average of 13%
Vision disability7.2% 1.6 pts above the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments1,028
People employed18,960
Annual payroll$1,113,664,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 71.3% of US census tracts
FEMA ratingRelatively Low to Relatively High across the 18 census tracts this ZIP code covers
Expected annual loss66.6 out of 100
Community resilience39.6 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Drought87.3Relatively Moderate at its worst in this ZIP code
Hail86Relatively High at its worst in this ZIP code
River flooding85.8Very High at its worst in this ZIP code
Wildfire84.2Relatively Moderate at its worst in this ZIP code
Lightning80.2Relatively High at its worst in this ZIP code
Tornado78.8Relatively High at its worst in this ZIP code
Winter weather74Relatively High at its worst in this ZIP code
Heat wave70.2Relatively High at its worst in this ZIP code
Landslide62.9Very Low at its worst in this ZIP code
Hurricane58.8Relatively Low at its worst in this ZIP code
Strong wind57.1Relatively Moderate at its worst in this ZIP code
Cold wave55Relatively Moderate at its worst in this ZIP code
Ice storm32.5Relatively Low at its worst in this ZIP code
Earthquake6.2Very Low at its worst in this ZIP code
Compared with Texas and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPTexasUnited States
Median household income$71,367$76,292$78,538
Income per person$35,743$39,446$43,289
Poverty rate17%13.8%12.4%
Median home value$246,000$260,400$303,400
Median gross rent$1,149$1,339$1,348
Homeownership73.1%62.6%65%
Bachelor's degree or higher22.5%33.1%35%
Unemployment rate3.4%5.1%5.2%
Works from home8.5%12.8%13.5%
Born outside the US8.3%17.2%13.9%
Median age39.435.538.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationAUSTIN SAN ANTONIO, TX US17 km away
Rain in a year31 in

Average high and low by month

January64.2°F / 40.3°F2.14 in rain
February68.3°F / 43.8°F1.72 in rain
March74.9°F / 50.6°F2.49 in rain
April81.5°F / 58°F2 in rain
May87.7°F / 65.5°F3.63 in rain
June93.4°F / 71.4°F3.44 in rain
July96.3°F / 72.7°F2.21 in rain
August97.5°F / 72.7°F2.01 in rain
September91.8°F / 67.9°F3.45 in rain
October83.6°F / 58.9°F3.3 in rain
November72.9°F / 49.1°F2.46 in rain
December65.4°F / 41.6°F2.42 in rain
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarket6% of this ZIP code's area
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 3 school districts, so the address decides which one, not the ZIP code.

Seguin Independent School District75.2% of this ZIP code's land area
Navarro Independent School District13.7% of this ZIP code's land area
Marion Independent School District10.2% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability55more vulnerable than 55% of US census tracts
Socioeconomic status49more vulnerable than 49% of US census tracts
Household characteristics61more vulnerable than 61% of US census tracts
Racial and ethnic minority status58more vulnerable than 58% of US census tracts
Housing type and transport49more vulnerable than 49% of US census tracts
Walkability3.6 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

78156 Seguin, TX5.7 km away
78115 Geronimo, TX7.8 km away
78123 Mc Queeney, TX9.5 km away
78638 Kingsbury, TX17.8 km away
78124 Marion, TX18.3 km away
78150 Jbsa Randolph, TX20.6 km away
78130 New Braunfels, TX20.9 km away
78131 New Braunfels, TX22.2 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Guadalupe County100% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area355.46 sq mi
Water area1.48 sq mi
Population density150 people per sq mi
Latitude, longitude29.5613, -97.9628

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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