78266 ZIP Code, San Antonio, TX
78266 is a ZIP code in San Antonio, Texas — mostly in Comal County (80% of its land), with smaller parts in Bexar County. It covers 40 square miles of land, centered about 18 miles northeast of downtown San Antonio. The closest ZIP codes are 78261, 78259 and 78247. 7,338 people live here in 2,651 households. With about 185 people per square mile it is lightly settled, and most homes are owner-occupied (94%). Median household income is $146,792, well above the Texas median of $78,476; the median age is 49.8, older than most ZIP codes.
Quick facts
- Mailing city: San Antonio, TX
- County: Comal County
- Metro area: San Antonio
- Land area: 40 sq mi
- Population: 7,338
- Median household income: $146,792
- Carrier routes: 7 (3,698 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 7,338 |
| Households | 2,651 |
| Median household income | $146,792 |
| Income per person | $71,737 |
| Median age | 49.8 |
| Homeowners | 94.3% |
| Median home value | $586,600 |
| Median rent | $2,306 |
| Bachelor's degree or higher | 60.1% |
| Average commute (minutes) | 32.9 |
| Households with kids under 18 | 27.6% |
| Moved in the past year | 18.2% |
| Below the poverty line | 1.6% |
| Broadband internet | 97.3% |
| Speak a non-English language at home | 12.1% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.4% |
| $10–15K | 0.9% |
| $15–25K | 0.5% |
| $25–35K | 1.5% |
| $35–50K | 5.0% |
| $50–75K | 7.7% |
| $75–100K | 10.4% |
| $100–150K | 23.5% |
| $150–200K | 9.5% |
| $200K+ | 38.6% |
Age
| % of all residents | Value |
|---|---|
| <10 | 6.2% |
| 10–19 | 17.9% |
| 20–24 | 3.6% |
| 25–34 | 6.1% |
| 35–44 | 10.9% |
| 45–54 | 11.7% |
| 55–64 | 23.6% |
| 65–74 | 12.4% |
| 75+ | 7.7% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 55.4% |
| Owned outright | 34.0% |
| Rented | 5.4% |
| Vacant | 5.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 93.2% |
| Townhome | 0.0% |
| 2–4 units | 0.0% |
| 5–19 units | 0.0% |
| 20+ units | 3.1% |
| Mobile / other | 3.7% |
Businesses in 78266
288 business establishments with 4,146 employees (ZIP Codes Business Patterns 2023).
- Construction: 59
- Professional, Scientific, and Technical Services: 34
- Real Estate and Rental and Leasing: 24
- Health Care and Social Assistance: 22
- Other Services (except Public Administration): 22
- Retail Trade: 20
- Finance and Insurance: 20
- Administrative and Support and Waste Management and Remediation Services: 19
EDDM carrier routes
78266 has 7 USPS carrier routes with 3,698 residential and 287 business mailboxes. Open the EDDM route map.
Carrier routes in 78266
78266 has 7 USPS carrier routes (7 rural (R)) with 3,698 residential and 287 business mailboxes. Routes range from 382 homes (R003) to 663 homes (R315); the median route has 523 homes. The Census counted 2,651 households in 78266 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 2 |
| 500–749 | 5 |
| 750–999 | 0 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 78266 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R119 — Est. median household income $187,465, 462 homes
- Route R020 — Est. median household income $184,949, 512 homes
- Route R016 — Est. median household income $168,892, 523 homes
- Route R240 — Est. median household income $144,459, 531 homes
- Route R003 — Est. median household income $134,934, 382 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 R315 — Est. families with children under 18 37.5%, 663 homes
- Route R164 — Est. families with children under 18 33.4%, 625 homes
- Route R003 — Est. families with children under 18 32.9%, 382 homes
- Route R020 — Est. families with children under 18 31.8%, 512 homes
- Route R119 — Est. families with children under 18 28.8%, 462 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 R020 — Est. owner-occupied homes 95.3%, 512 homes
- Route R119 — Est. owner-occupied homes 94.3%, 462 homes
- Route R016 — Est. owner-occupied homes 92.8%, 523 homes
- Route R240 — Est. owner-occupied homes 91.3%, 531 homes
- Route R003 — Est. owner-occupied homes 89.9%, 382 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 R240 — Est. residents who moved in the past year 22.4%, 531 homes
- Route R164 — Est. residents who moved in the past year 21.8%, 625 homes
- Route R003 — Est. residents who moved in the past year 20.5%, 382 homes
- Route R016 — Est. residents who moved in the past year 14.0%, 523 homes
- Route R020 — Est. residents who moved in the past year 13.5%, 512 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 R003 — Est. homes built 2010 or later 52.9%, 382 homes
- Route R315 — Est. homes built 2010 or later 49.6%, 663 homes
- Route R164 — Est. homes built 2010 or later 45.1%, 625 homes
- Route R240 — Est. homes built 2010 or later 31.3%, 531 homes
- Route R020 — Est. homes built 2010 or later 28.6%, 512 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R003 — USPS business mailboxes 219, 382 homes
- Route R164 — USPS business mailboxes 32, 625 homes
- Route R020 — USPS business mailboxes 19, 512 homes
- Route R119 — USPS business mailboxes 8, 462 homes
- Route R016 — USPS business mailboxes 7, 523 homes
Select these 5 routes on the route map
Every carrier route in 78266
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R003 | Rural | 382 | 219 | $134,934 | 89.9% | 32.9% | 20.5% |
| R016 | Rural | 523 | 7 | $168,892 | 92.8% | 19.6% | 14.0% |
| R020 | Rural | 512 | 19 | $184,949 | 95.3% | 31.8% | 13.5% |
| R119 | Rural | 462 | 8 | $187,465 | 94.3% | 28.8% | 11.6% |
| R164 | Rural | 625 | 32 | $126,368 | 81.5% | 33.4% | 21.8% |
| R240 | Rural | 531 | 2 | $144,459 | 91.3% | 26.6% | 22.4% |
| R315 | Rural | 663 | 0 | $104,464 | 73.2% | 37.5% | 13.2% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78266 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
- 78261 — San Antonio city, TX (4.7 mi)
- 78259 — San Antonio city, TX (5.3 mi)
- 78247 — San Antonio city, TX (6.4 mi)
- 78233 — San Antonio city, TX (6.8 mi)
- 78148 — Universal City city, TX (7.8 mi)
- 78150 — Randolph AFB CDP, TX (8.5 mi)
- 78154 — Schertz city, TX (8.5 mi)
- 78108 — Cibolo city, TX (9.1 mi)
Areas that include 78266
- San Antonio, TX ZIP codes — 64 ZIP codes
- Garden Ridge, TX ZIP codes — 1 ZIP code
- Bexar County ZIP codes — 76 ZIP codes
- Comal County ZIP codes — 9 ZIP codes
- San Antonio ZIP code map — 121 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 5 of 104: highest median household income in the San Antonio area
- No. 4 of 101: highest median home value in the San Antonio area
- No. 4 of 104: highest share of owner-occupied homes in the San Antonio area
- No. 25 of 104: highest share of residents who moved in during the past year in the San Antonio area
- No. 9 of 104: highest median age in the San Antonio area
- No. 2 of 9: highest median household income in Comal County
- No. 2 of 9: highest median home value in Comal County
- No. 3 of 9: highest share of owner-occupied homes in Comal County
- No. 1 of 9: highest share of residents who moved in during the past year in Comal County
- No. 3 of 9: highest median age in Comal County
- No. 4 of 63: highest median household income in San Antonio, TX
- No. 3 of 61: highest median home value in San Antonio, TX
Mail every home in 78266
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) 78266, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78266 in?
- 78266 is a San Antonio, TX mailing address. By land area, 17% lies inside Garden Ridge and 13% lies inside San Antonio; the rest is outside any Census-defined city or community.
- What county is 78266 in?
- 78266 is mostly in Comal County (80% of its land), with smaller parts in Bexar County.
- What is the population of 78266?
- About 7,338 people (±675), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 7,534.
- What is the median household income in 78266?
- $146,792 (±$19,731), 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 78266?
- 7 USPS carrier routes with 3,698 residential and 287 business mailboxes (3,991 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78266?
- The closest, measured center to center: 78261 (4.7 mi, San Antonio), 78259 (5.3 mi, San Antonio), 78247 (6.4 mi, San Antonio), 78233 (6.8 mi, San Antonio), 78148 (7.8 mi, Universal City) and 78150 (8.5 mi, Randolph AFB).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.