78234 ZIP Code, Jbsa Ft Sam Houston, TX
78234 is a ZIP code in Jbsa Ft Sam Houston, Texas in Bexar County. It covers 5.1 square miles of land, centered about 4.2 miles northeast of downtown San Antonio. The closest ZIP codes are 78208, 78209 and 78202. 7,149 people live here in 1,035 households. At about 1,405 people per square mile it has suburban density, and most households rent (0% own). Median household income is $100,662, above the Texas median of $78,476; 74% of households have children under 18.
Quick facts
- Mailing city: Jbsa Ft Sam Houston, TX
- County: Bexar County
- Metro area: San Antonio
- Land area: 5.1 sq mi
- Population: 7,149
- Median household income: $100,662
- Carrier routes: 3 (931 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 7,149 |
| Households | 1,035 |
| Median household income | $100,662 |
| Income per person | $27,584 |
| Median age | 21.2 |
| Homeowners | 0.0% |
| Median home value | not published |
| Median rent | $2,223 |
| Bachelor's degree or higher | 51.2% |
| Average commute (minutes) | 11.6 |
| Households with kids under 18 | 74.3% |
| Moved in the past year | 62.9% |
| Below the poverty line | 11.1% |
| Broadband internet | 99.4% |
| Speak a non-English language at home | 22.4% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.1% |
| $10–15K | 1.2% |
| $15–25K | 4.8% |
| $25–35K | 3.8% |
| $35–50K | 12.9% |
| $50–75K | 12.6% |
| $75–100K | 12.2% |
| $100–150K | 24.5% |
| $150–200K | 10.0% |
| $200K+ | 15.8% |
Age
| % of all residents | Value |
|---|---|
| <10 | 13.4% |
| 10–19 | 29.7% |
| 20–24 | 23.3% |
| 25–34 | 16.3% |
| 35–44 | 10.5% |
| 45–54 | 4.9% |
| 55–64 | 1.4% |
| 65–74 | 0.4% |
| 75+ | 0.0% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 0.0% |
| Owned outright | 0.0% |
| Rented | 88.2% |
| Vacant | 11.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 68.5% |
| Townhome | 22.6% |
| 2–4 units | 0.9% |
| 5–19 units | 0.0% |
| 20+ units | 7.9% |
| Mobile / other | 0.0% |
Businesses in 78234
89 business establishments with 3,700 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 34
- Retail Trade: 13
- Administrative and Support and Waste Management and Remediation Services: 9
- Other Services (except Public Administration): 9
- Accommodation and Food Services: 8
- Health Care and Social Assistance: 4
- Construction: 3
- Finance and Insurance: 3
EDDM carrier routes
78234 has 3 USPS carrier routes with 931 residential and 9 business mailboxes. Open the EDDM route map.
Carrier routes in 78234
78234 has 3 USPS carrier routes (3 city (C)) with 931 residential and 9 business mailboxes. Routes range from 102 homes (C003) to 550 homes (C001); the median route has 279 homes. The Census counted 1,035 households in 78234 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 1 |
| 250–499 | 1 |
| 500–749 | 1 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 78234 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C001 — Est. median household income $100,650, 550 homes
- Route C002 — Est. median household income $100,650, 279 homes
Select these 2 routes on the route map
Often mailed by: Home services EDDM, Real estate EDDM postcards, Landscaping and lawn care mailers
Most families with kids
For tutoring, youth sports, pediatric dental, child care and family dining.
- Route C001 — Est. families with children under 18 74.3%, 550 homes
- Route C002 — Est. families with children under 18 74.3%, 279 homes
Select these 2 routes on the route map
Often mailed by: Dental practice EDDM, Healthcare and clinic mailers
Most homeowners
Owners decide on roofs, HVAC, lawns, solar and insurance; renters usually can't.
- Route C001 — Est. owner-occupied homes 0.0%, 550 homes
- Route C002 — Est. owner-occupied homes 0.0%, 279 homes
Select these 2 routes on the route map
Often mailed by: Roofing direct mail, HVAC postcards
Most new movers
New residents are still choosing a dentist, a gym and a lawn service.
- Route C001 — Est. residents who moved in the past year 62.9%, 550 homes
- Route C002 — Est. residents who moved in the past year 62.9%, 279 homes
Select these 2 routes on the route map
Often mailed by: Restaurant EDDM menus and offers, Gym and fitness mailers
Newest homes
Newer subdivisions: landscaping, window treatments, fencing, security, home warranties.
- Route C001 — Est. homes built 2010 or later 13.2%, 550 homes
- Route C002 — Est. homes built 2010 or later 13.2%, 279 homes
Select these 2 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C003 — USPS business mailboxes 5, 102 homes
- Route C001 — USPS business mailboxes 4, 550 homes
Select these 2 routes on the route map
Every carrier route in 78234
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C001 | City | 550 | 4 | $100,650 | 0.0% | 74.3% | 62.9% |
| C002 | City | 279 | 0 | $100,650 | 0.0% | 74.3% | 62.9% |
| C003 | City | 102 | 5 | $100,650 | 0.0% | 74.3% | 62.9% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78234 on the EDDM route map.
How route demographics are estimated
Mailbox counts come from USPS; demographics are estimates
The number of homes and businesses on each carrier route is the current USPS EDDM count. The Census Bureau does not publish figures for carrier routes, so income, homeownership, ages, families, movers and housing age on a route are EDDM2GO estimates built from Census block groups (neighborhood areas of roughly 600 to 3,000 people).
How a route gets its figures: the block-group length-share method
We trace each route's streets every 25 meters and record which block group each stretch falls in. The route's homes are spread along its streets in proportion to length, so a route with 60% of its street length in one block group is assumed to have 60% of its homes there. Each block group then contributes its Census counts in proportion to the share of its housing units that sit on the route (capped at the whole block group). Medians are recalculated from the combined income, home-value and age brackets, the way the Census Bureau computes them, not averaged.
Margins of error
Census survey figures carry a margin of error at 90% confidence; we carry it through the calculation and show it as ±. Our margins treat the route-to-block-group split as exact, so the real uncertainty is larger. Routes with fewer than 100 estimated households, large margins, or streets we could not place are flagged.
Different years
USPS mailbox counts are current. Census figures are 5-year averages for 2020–2024, so a new subdivision may have more homes on the route today than the Census counted. Use the route figures to compare routes with each other, not as an exact head count.
Why some routes show identical figures
Two routes that run through the same block group get the same percentages and medians, because the Census publishes one set of figures for the whole block group. Their mailbox counts still differ, and those are exact.
Route and mailbox counts: USPS EDDM route data. Route demographics: EDDM2GO estimates from U.S. Census Bureau American Community Survey 5-year block-group data (2020–2024) and 2024 cartographic block-group boundaries. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.
Nearby ZIP codes
- 78208 — San Antonio city, TX (1.9 mi)
- 78209 — San Antonio city, TX (2.2 mi)
- 78202 — San Antonio city, TX (2.6 mi)
- 78215 — San Antonio city, TX (2.9 mi)
- 78212 — San Antonio city, TX (3.3 mi)
- 78203 — San Antonio city, TX (3.4 mi)
- 78218 — San Antonio city, TX (3.4 mi)
- 78219 — San Antonio city, TX (3.5 mi)
Areas that include 78234
- San Antonio, TX ZIP codes — 64 ZIP codes
- Jbsa Ft Sam Houston, TX ZIP codes — 1 ZIP code
- Bexar County ZIP codes — 76 ZIP codes
- San Antonio ZIP code map — 121 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 24 of 104: highest median household income in the San Antonio area
- No. 2 of 104: highest share of households with children in the San Antonio area
- No. 2 of 104: highest share of residents who moved in during the past year in the San Antonio area
- No. 1 of 104: lowest median age in the San Antonio area
- No. 12 of 104: fastest population growth in the San Antonio area
- No. 16 of 74: highest median household income in Bexar County
- No. 2 of 74: highest share of households with children in Bexar County
- No. 2 of 74: highest share of residents who moved in during the past year in Bexar County
- No. 1 of 74: lowest median age in Bexar County
- No. 10 of 74: fastest population growth in Bexar County
Mail every home in 78234
Route counts on this page price as Full Service 6.5 × 9 postcards: we print, bundle by carrier route and hand the mailing to USPS. Prefer to take it to the Post Office yourself? Print only costs less and you pay postage at drop-off.
San Antonio EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 78234, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78234 in?
- 78234 is a Jbsa Ft Sam Houston, TX mailing address. By land area, 100% lies inside San Antonio.
- What county is 78234 in?
- 78234 is in Bexar County.
- What is the population of 78234?
- About 7,149 people (±508), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 7,464.
- What is the median household income in 78234?
- $100,662 (±$21,360), compared with $78,476 for Texas as a whole. Half the households in the ZIP code earn more and half earn less.
- How many carrier routes and mailboxes are in 78234?
- 3 USPS carrier routes with 931 residential and 9 business mailboxes (940 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78234?
- The closest, measured center to center: 78208 (1.9 mi, San Antonio), 78209 (2.2 mi, San Antonio), 78202 (2.6 mi, San Antonio), 78215 (2.9 mi, San Antonio), 78212 (3.3 mi, San Antonio) and 78203 (3.4 mi, San Antonio).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.