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 Moderate-density area
- $71,039
- Median income Near-median income area
- $266,700
- Median home value Near-median home value
- 21.7%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
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 average Texas ZIP), while per-capita income is $36,571. The poverty rate is 16.9%, with unemployment at 3.9%; those measures add context to the income figure. Median home value is $266,700 (8% above the average Texas ZIP) and median rent is $1,198; 72.5% of occupied 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. The page also surfaces 2 ZIP codes within roughly 10 miles and 6 more in Guadalupe County, so 78155 can be compared with both its immediate and county-level context.
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.
- Retail trade
Retail trade
160 establishments
- Construction
Construction
116 establishments
- Health care and social assistance
Health care and social assistance
104 establishments
- Accommodation and food services
Accommodation and food services
104 establishments
- Other services (except public administration)
Other services (except public administration)
104 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, 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
Who lives in ZIP 78155?
39.4
Median Age
50.1%
Male
49.9%
Female
8.9%
Foreign-Born
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 ZIP avg
$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
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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
22,688housing units
22,688
Total Housing Units
21,007
Occupied Units
1,681
Vacant Units
2.56
Avg Household Size
Occupancy Type
$266,700
Median Home Value
+8% vs state ZIP avg
$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.
- 78155
Seguin (78155)
45,341 residents
- 78123 2,397
Mc Queeney (78123)
2,397 residents
- 78638 2,005
Kingsbury (78638)
2,005 residents
What this shows Among its immediate neighbors, ZIP 78155 ranks the most populous - useful context the national average alone can't give.
ZIP 78155 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 78123
Mc Queeney (78123)
$97,553 median income
- 78155
Seguin (78155)
$71,039 median income
- 78638
Kingsbury (78638)
$69,250 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.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 78155, both outside TX so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (45,341 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Guadalupe County
Related Areas
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.
Related
Take this with you
What to do with ZIP 78155's numbers, next.
- See how ZIP 78155 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Seguin, TX ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
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ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.