78233 ZIP Code, San Antonio, TX
78233 is a ZIP code in San Antonio, Texas in Bexar County. It covers 14 square miles of land, centered about 12 miles northeast of downtown San Antonio. The closest ZIP codes are 78239, 78247 and 78217. 48,911 people live here in 18,970 households, more than in 9 of every 10 Texas ZIP codes. At about 3,578 people per square mile it has suburban density, and owners and renters are mixed (60% own). Median household income is $76,421, close to the Texas median of $78,476.
Quick facts
- Mailing city: San Antonio, TX
- County: Bexar County
- Metro area: San Antonio
- Land area: 14 sq mi
- Population: 48,911
- Median household income: $76,421
- Carrier routes: 23 (22,056 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 48,911 |
| Households | 18,970 |
| Median household income | $76,421 |
| Income per person | $34,614 |
| Median age | 36 |
| Homeowners | 60.4% |
| Median home value | $220,800 |
| Median rent | $1,514 |
| Bachelor's degree or higher | 27.5% |
| Average commute (minutes) | 23.3 |
| Households with kids under 18 | 37.4% |
| Moved in the past year | 11.2% |
| Below the poverty line | 10.4% |
| Broadband internet | 95.2% |
| Speak a non-English language at home | 30.5% |
Household income
| % of households | Value |
|---|---|
| <$10K | 4.7% |
| $10–15K | 1.5% |
| $15–25K | 5.9% |
| $25–35K | 6.2% |
| $35–50K | 11.5% |
| $50–75K | 19.1% |
| $75–100K | 19.2% |
| $100–150K | 19.9% |
| $150–200K | 7.0% |
| $200K+ | 4.8% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.6% |
| 10–19 | 14.4% |
| 20–24 | 6.4% |
| 25–34 | 16.4% |
| 35–44 | 14.9% |
| 45–54 | 10.6% |
| 55–64 | 11.2% |
| 65–74 | 7.7% |
| 75+ | 6.6% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 33.9% |
| Owned outright | 24.0% |
| Rented | 37.6% |
| Vacant | 4.5% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 69.4% |
| Townhome | 2.0% |
| 2–4 units | 3.8% |
| 5–19 units | 10.5% |
| 20+ units | 10.4% |
| Mobile / other | 4.0% |
Businesses in 78233
864 business establishments with 16,432 employees (ZIP Codes Business Patterns 2023).
- Health Care and Social Assistance: 155
- Construction: 127
- Retail Trade: 106
- Accommodation and Food Services: 92
- Other Services (except Public Administration): 74
- Administrative and Support and Waste Management and Remediation Services: 70
- Wholesale Trade: 50
- Real Estate and Rental and Leasing: 38
EDDM carrier routes
78233 has 23 USPS carrier routes with 22,056 residential and 1,380 business mailboxes. Open the EDDM route map.
Carrier routes in 78233
78233 has 23 USPS carrier routes (23 city (C)) with 22,056 residential and 1,380 business mailboxes. Routes range from 551 homes (C054) to 1,545 homes (C042); the median route has 897 homes. The Census counted 18,970 households in 78233 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 8 |
| 750–999 | 6 |
| 1,000–1,499 | 7 |
| 1,500+ | 2 |
Best routes in 78233 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C024 — Est. median household income $114,989, 1,523 homes
- Route C059 — Est. median household income $106,589, 903 homes
- Route C040 — Est. median household income $99,757, 1,294 homes
- Route C025 — Est. median household income $98,873, 810 homes
- Route C063 — Est. median household income $94,987, 1,461 homes
Select these 5 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 C040 — Est. families with children under 18 67.2%, 1,294 homes
- Route C024 — Est. families with children under 18 55.4%, 1,523 homes
- Route C051 — Est. families with children under 18 47.4%, 744 homes
- Route C026 — Est. families with children under 18 46.4%, 990 homes
- Route C025 — Est. families with children under 18 44.6%, 810 homes
Select these 5 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 C044 — Est. owner-occupied homes 86.4%, 662 homes
- Route C049 — Est. owner-occupied homes 82.4%, 629 homes
- Route C063 — Est. owner-occupied homes 82.1%, 1,461 homes
- Route C059 — Est. owner-occupied homes 81.6%, 903 homes
- Route C048 — Est. owner-occupied homes 80.9%, 684 homes
Select these 5 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 C026 — Est. residents who moved in the past year 21.3%, 990 homes
- Route C058 — Est. residents who moved in the past year 20.1%, 897 homes
- Route C046 — Est. residents who moved in the past year 19.8%, 874 homes
- Route C054 — Est. residents who moved in the past year 19.3%, 551 homes
- Route C052 — Est. residents who moved in the past year 16.0%, 641 homes
Select these 5 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 C024 — Est. homes built 2010 or later 40.0%, 1,523 homes
- Route C040 — Est. homes built 2010 or later 35.8%, 1,294 homes
- Route C062 — Est. homes built 2010 or later 35.5%, 560 homes
- Route C042 — Est. homes built 2010 or later 34.5%, 1,545 homes
- Route C064 — Est. homes built 2010 or later 21.8%, 1,034 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C062 — USPS business mailboxes 223, 560 homes
- Route C041 — USPS business mailboxes 215, 1,389 homes
- Route C055 — USPS business mailboxes 182, 1,205 homes
- Route C040 — USPS business mailboxes 168, 1,294 homes
- Route C049 — USPS business mailboxes 125, 629 homes
Select these 5 routes on the route map
Every carrier route in 78233
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C024 | City | 1,523 | 48 | $114,989 | 70.4% | 55.4% | 6.8% |
| C025 | City | 810 | 34 | $98,873 | 79.8% | 44.6% | 4.0% |
| C026 | City | 990 | 16 | $80,754 | 53.1% | 46.4% | 21.3% |
| C040 | City | 1,294 | 168 | $99,757 | 71.2% | 67.2% | 3.3% |
| C041 | City | 1,389 | 215 | $48,464 | 51.9% | 32.5% | 12.7% |
| C042 | City | 1,545 | 111 | $72,085 | 51.2% | 34.5% | 14.2% |
| C043 | City | 818 | 3 | $72,368 | 56.9% | 19.0% | 12.3% |
| C044 | City | 662 | 5 | $92,222 | 86.4% | 29.9% | 5.3% |
| C046 | City | 874 | 21 | $56,891 | 61.5% | 19.5% | 19.8% |
| C047 | City | 1,021 | 9 | $59,457 | 77.5% | 34.8% | 7.2% |
| C048 | City | 684 | 11 | $71,439 | 80.9% | 20.2% | 8.8% |
| C049 | City | 629 | 125 | $67,400 | 82.4% | 33.9% | 7.0% |
| C050 | City | 640 | 22 | $79,914 | 72.6% | 29.0% | 14.0% |
| C051 | City | 744 | 8 | $78,475 | 80.2% | 47.4% | 4.8% |
| C052 | City | 641 | 2 | $86,879 | 69.9% | 42.1% | 16.0% |
| C054 | City | 551 | 42 | $87,189 | 65.0% | 43.5% | 19.3% |
| C055 | City | 1,205 | 182 | $73,035 | 62.9% | 34.8% | 13.9% |
| C056 | City | 1,181 | 103 | $70,899 | 75.1% | 34.6% | 15.6% |
| C058 | City | 897 | 4 | $68,174 | 58.4% | 40.7% | 20.1% |
| C059 | City | 903 | 0 | $106,589 | 81.6% | 44.0% | 4.0% |
| C062 | City | 560 | 223 | $93,475 | 68.7% | 44.3% | 12.3% |
| C063 | City | 1,461 | 25 | $94,987 | 82.1% | 41.3% | 10.1% |
| C064 | City | 1,034 | 3 | $82,538 | 61.1% | 44.2% | 9.3% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78233 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
- 78239 — Windcrest city, TX (2.7 mi)
- 78247 — San Antonio city, TX (3.2 mi)
- 78217 — San Antonio city, TX (3.5 mi)
- 78148 — Universal City city, TX (4.1 mi)
- 78218 — San Antonio city, TX (4.6 mi)
- 78150 — Randolph AFB CDP, TX (5.1 mi)
- 78244 — San Antonio city, TX (5.4 mi)
- 78259 — San Antonio city, TX (5.9 mi)
Areas that include 78233
- San Antonio, TX ZIP codes — 64 ZIP codes
- Live Oak, 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
Mail every home in 78233
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) 78233, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78233 in?
- 78233 is a San Antonio, TX mailing address. By land area, 66% lies inside San Antonio, 33% lies inside Live Oak and 1% lies inside Universal City.
- What county is 78233 in?
- 78233 is in Bexar County.
- What is the population of 78233?
- About 48,911 people (±2,344), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 49,442.
- What is the median household income in 78233?
- $76,421 (±$4,930), 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 78233?
- 23 USPS carrier routes with 22,056 residential and 1,380 business mailboxes (23,438 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78233?
- The closest, measured center to center: 78239 (2.7 mi, Windcrest), 78247 (3.2 mi, San Antonio), 78217 (3.5 mi, San Antonio), 78148 (4.1 mi, Universal City), 78218 (4.6 mi, San Antonio) and 78150 (5.1 mi, Randolph AFB).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.