PlainZIP

Seguin, TX · standard

ZIP Code 78155

Guadalupe County, Texas - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

45,341
49/sq mi
$71,039
Median income
$266,700
Median home value
21.7%
Bachelor's or higher

The verdict

Seguin pairs a below-median household income with above-median home values, in a rural, homeowner-dominated area.

48th pct
household income, US ZIPs
Top 39%
home value, US ZIPs
49
people per sq mi
73%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 78155 against every reporting US ZIP.

ZIP code 78155 is a densely settled ZIP (a standard USPS delivery area) in Seguin, Guadalupe County, Texas, with 45,341 residents across 917.8 square miles, a density of 49 people per square mile, in the Chicago time zone.

ZIP 78155 lands in the middle-income range, with a median household income of $71,039 (6% below the Texas average), while per-capita income is $36,571. 16.9% of residents live below the poverty line, and the unemployment rate reads 3.9%. Housing costs here run $266,700 for a typical home value (8% above the state average), with rent averaging $1,198 a month; 72.5% of homes are owner-occupied.

Educational attainment sits below the national norm: 21.7% of adults hold a bachelor's degree or higher, the median age is 39.4, and the average commute is 27 minutes. We also surface 2 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Guadalupe County, so you can benchmark 78155 against its immediate geography rather than a national average alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 78155

Top 5 sectors by establishment count in Seguin, TX

Which industries have the most business establishments in ZIP 78155.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 78155, Seguin, TX · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

45,341

Population

917.8

Area (sq mi)

49

People / sq mi

Chicago

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 78155?

39.4

Median Age

50.1%

Male

49.9%

Female

8.9%

Foreign-Born

White 51.5%
African American 4.9%
Asian 0.7%
American Indian or Alaska Native 0.3%
Native Hawaiian or Pacific Islander 0.1%
Two or More Ethnicities 30.5%
Hispanic or Latino 50.1%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$71,039

Median Household Income

-6% vs state

$36,571

Per Capita Income

16.9%

Poverty Rate

3.9%

Unemployment Rate

26.5 min

Mean Commute Time

How ZIP 78155 ranks nationally

Seguin, TX household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$71,039 48th percentile higher than 48% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 59.0%
Bachelor's Degree or Higher 21.7%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

22,688

Total Housing Units

21,007

Occupied Units

1,681

Vacant Units

2.56

Avg Household Size

Occupancy Type

Owner 72.5%
Renter 27.5%

$266,700

Median Home Value

+8% vs state

$1,198

Median Rent

1992

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+0.1%

YoY Change (2024)

335

HPI Index (2000 = 100)

+235%

Total Change Since 2000

Home values in ZIP 78155 have increased 0.1% over the past year (2024). Since 2000, this ZIP has seen +235% cumulative appreciation.

Year Annual Change HPI Index
2020 +2.6% 228
2021 +13.7% 259
2022 +18.5% 307
2023 +8.9% 335
2024 +0.1% 335

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 1,065 business establishments in ZIP 78155, employing approximately 20,490 people with a combined annual payroll of $1,195,648,000.

1,065

Businesses

20,490

Employees

$1.2B

Annual Payroll

19

Industry Sectors

Industry Establishments % of Total
Retail trade 160 15.0%
Construction 116 10.9%
Health care and social assistance 104 9.8%
Accommodation and food services 104 9.8%
Other services (except public administration) 104 9.8%
Manufacturing 73 6.8%
Finance and insurance 73 6.8%
Professional, scientific, and technical services 66 6.2%
Real estate and rental and leasing 54 5.1%
Transportation and warehousing 47 4.4%
Administrative and support and waste management and remediation services 44 4.1%
Wholesale trade 40 3.8%
Arts, entertainment, and recreation 21 2.0%
Information 17 1.6%
Management of companies and enterprises 16 1.5%
Educational services 13 1.2%
Mining, quarrying, and oil and gas extraction 4 0.4%
Industries not classified 4 0.4%
Utilities 3 0.3%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 78155 vs 78123 →

ZIP 78155 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 78155 ranks the most populous - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 78155 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 78155 ranks #2 of 3 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
78123 Mc Queeney, TX 2,397 7.9 mi
78638 Kingsbury, TX 2,005 12.1 mi

More ZIP Codes in Guadalupe County

78666 standard
San Marcos, TX
Pop: 63,836
78154 standard
Schertz, TX
Pop: 30,347
78108 standard
Cibolo, TX
Pop: 27,770
78124 standard
Marion, TX
Pop: 5,609
78123 standard
Mc Queeney, TX
Pop: 2,397
78638 standard
Kingsbury, TX
Pop: 2,005

Related Areas

Guadalupe County Seguin, TX Texas

Frequently Asked Questions

What county is ZIP code 78155 in? ▼
ZIP code 78155 (Seguin) is located in Guadalupe County, Texas. Guadalupe County contains multiple ZIP codes, see the full list at /counties/guadalupe-tx.
What is the population of ZIP code 78155? ▼
ZIP code 78155 in Seguin, TX has a population of 45,341 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 78155? ▼
The median household income in ZIP 78155 is $71,039, which is 7% below the national average of $76,288.
What is the average home value in ZIP 78155? ▼
The median home value in ZIP 78155 is $266,700, which is 4% below the national average of $278,155.
What is the demographic makeup of ZIP 78155? ▼
The largest racial group in ZIP 78155 is White at 51.5%. Hispanic or Latino residents make up 50.1% of the population.
How many businesses are in ZIP code 78155? ▼
ZIP code 78155 has 1,065 business establishments employing approximately 20,490 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 78155? ▼
The top industries by establishment count in ZIP 78155 are: Retail trade (160), Construction (116), Health care and social assistance (104). There are 19 industry sectors represented in total.
How have home values changed in ZIP code 78155? ▼
According to the FHFA House Price Index, home values in ZIP 78155 increased by 0.1% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 235%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 78155? ▼
In ZIP code 78155, 59.0% of residents aged 25+ have a high school diploma or higher, and 21.7% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 78155? ▼
The mean commute time for workers in ZIP code 78155 is 26.5 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 78155? ▼
In ZIP code 78155, approximately 72.5% of occupied housing units are owner-occupied and 27.5% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 78155? ▼
The poverty rate in ZIP code 78155 is 16.9% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.