ZIP Code 78121, Texas
ZIP Code 78121 profile, demographic data, and geographic information.
ZCTA5 78121 is a 5-digit ZIP Code area located in Guadalupe County / Wilson County, Texas. As of official census estimates, it has a reported population of 16,120. The land area covers 102.62 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 16,120 | ±1,260 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 38.2 yrs | ±1.1 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 5,274 | ±403 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 5,426 | ±414 |
| Occupied Housing Units | 5,274 | ±403 |
| Vacant Housing Units | 152 | ±90 |
| Median Home Value | $402,600 | ±$28,801 |
| Median Gross Rent | $1,192 | ±$166 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $120,048 | ±$10,416 |
| Per Capita Income | $46,254 | ±$3,303 |
| Poverty Rate | 8% | ±2.2% |
| Population Below Poverty Level | 1,284 | ±361 |
| Unemployment Rate | 2.7% | ±1.3% |
| Civilian Labor Force, Employed | 8,210 | ±728 |
| Broadband Internet Rate | 93.7% | ±2.1% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
GUS Population: 195,166 (2024)
ID: 175888
|
County | Official County Government |
Contact: GREGORY WEBB
310 IH 10 W, SEGUIN TX 78155
|
Education
Listing 10 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Alternative School Nearby | 09-12 | SCHERTZ, TX | |
| Alternative School Nearby | 09-12 | CONVERSE, TX | |
| Regular School Nearby | PK-05 | CONVERSE, TX | |
| Regular School Nearby | PK-05 | CONVERSE, TX | |
| Regular School Nearby | PK-05 | UNIVERSAL CITY, TX | |
| Regular School Nearby | PK-05 | SAN ANTONIO, TX | |
| Regular School Nearby | 08-12 | SAN ANTONIO, TX | |
| Regular School Nearby | 09-12 | SAN ANTONIO, TX | |
| Regular School Nearby | 06-08 | SAN ANTONIO, TX | |
| Regular School Nearby | PK-05 | CONVERSE, TX |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 10 civic institutions across 2 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
Texas Lutheran University
|
College | 16.6 mi away | 1000 W. Court St, Seguin, TX, 78155-5999 |
8303728000
|
|
JANE YELVINGTON MCCALLUM PUBLIC LIBRARY
|
Library | 1.5 mi away | 112 E CHIHUAHUA ST, LA VERNIA, TX, 78121 |
(830) 253-1429
|
|
Seguin Beauty School-Seguin
|
College Vocational | 16.8 mi away | 102 E Court St, Seguin, TX, 78155 |
8303720935
|
|
SARAH BAIN CHANDLER LIBRARY
|
Library | 11.0 mi away | 800 W MAIN ST, STOCKDALE, TX, 78160 |
(830) 996-3114
|
|
College of Biomedical Equipment Technology
|
College | 18.9 mi away | 105 Windy Meadows, Bldg. 2, Suite 201, Schertz, TX, 78154 |
2102331102
|
|
WILSON COUNTY PUBLIC LIBRARIES
|
Library | 15.4 mi away | 1103 4TH ST, FLORESVILLE, TX, 78114 |
(830) 393-7361
|
|
Northeast Lakeview College
|
College | 19.5 mi away | 1201 Kitty Hawk Rd, Universal City, TX, 78145 |
2104865000
|
|
MARION COMMUNITY LIBRARY
|
Library | 15.5 mi away | 201 S CENTER ST, MARION, TX, 78124 |
(830) 420-4022
|
|
Top of the Line Barber School
|
College Vocational | 20.2 mi away | 5806 Walzem Road, San Antonio, TX, 78218-2109 |
2106460567
|
|
WILSON COUNTY HISTORICAL COMMISSION ARCHIVE
|
Library | 15.6 mi away | 1144 C ST, FLORESVILLE, TX, 78114 |
(830) 393-7361
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at FLORESVILLE, TX US, located 15.7 miles from ZCTA5 78121. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 64.8° | 39.0° | 51.9° | 1.64" | 0.0" |
| February | 69.0° | 42.8° | 55.9° | 1.61" | 0.0" |
| March | 75.9° | 50.5° | 63.2° | 2.28" | 0.0" |
| April | 82.0° | 56.4° | 69.2° | 2.41" | 0.0" |
| May | 88.0° | 65.9° | 77.0° | 4.38" | 0.0" |
| June | 93.5° | 71.4° | 82.4° | 2.95" | 0.0" |
| July | 96.1° | 73.6° | 84.8° | 2.32" | 0.0" |
| August | 97.6° | 73.0° | 85.3° | 2.66" | 0.0" |
| September | 91.8° | 67.8° | 79.8° | 4.06" | 0.0" |
| October | 84.4° | 58.0° | 71.2° | 3.16" | 0.0" |
| November | 73.8° | 48.1° | 61.0° | 2.32" | 0.0" |
| December | 66.1° | 40.9° | 53.5° | 1.84" | 0.0" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| La Vernia city | City | 2.3 mi | — |
| St. Hedwig town | Town | 8.6 mi | — |
| New Berlin city | City | 9.6 mi | — |
| Stockdale city | City | 11.0 mi | — |
| Zuehl CDP | CDP | 11.3 mi | — |
| Floresville city | City | 14.8 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 78121. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.