78070 ZIP Code, Spring Branch, TX
78070 is a ZIP code in Spring Branch, Texas — mostly in Comal County (82% of its land), with smaller parts in Kendall and Blanco counties. It covers 133 square miles of land, centered about 33 miles north of downtown San Antonio. The closest ZIP codes are 78004, 78163 and 78133. 20,200 people live here in 7,621 households. With about 152 people per square mile it is lightly settled, and most homes are owner-occupied (89%). Median household income is $115,175, above the Texas median of $78,476; the median age is 46.2, older than most ZIP codes.
Quick facts
- Mailing city: Spring Branch, TX
- County: Comal County
- Metro area: San Antonio
- Land area: 133 sq mi
- Population: 20,200
- Median household income: $115,175
- Carrier routes: 17 (9,863 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 20,200 |
| Households | 7,621 |
| Median household income | $115,175 |
| Income per person | $57,010 |
| Median age | 46.2 |
| Homeowners | 89.2% |
| Median home value | $516,600 |
| Median rent | $1,318 |
| Bachelor's degree or higher | 41.2% |
| Average commute (minutes) | 38.1 |
| Households with kids under 18 | 27.6% |
| Moved in the past year | 12.7% |
| Below the poverty line | 6.2% |
| Broadband internet | 96.1% |
| Speak a non-English language at home | 10.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 2.0% |
| $10–15K | 2.1% |
| $15–25K | 4.6% |
| $25–35K | 5.1% |
| $35–50K | 8.8% |
| $50–75K | 12.0% |
| $75–100K | 7.4% |
| $100–150K | 20.3% |
| $150–200K | 9.0% |
| $200K+ | 28.7% |
Age
| % of all residents | Value |
|---|---|
| <10 | 9.9% |
| 10–19 | 12.5% |
| 20–24 | 3.2% |
| 25–34 | 9.2% |
| 35–44 | 12.9% |
| 45–54 | 14.3% |
| 55–64 | 16.5% |
| 65–74 | 14.5% |
| 75+ | 6.9% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 56.1% |
| Owned outright | 28.6% |
| Rented | 10.1% |
| Vacant | 5.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 82.5% |
| Townhome | 0.4% |
| 2–4 units | 0.3% |
| 5–19 units | 1.0% |
| 20+ units | 1.9% |
| Mobile / other | 13.9% |
Businesses in 78070
528 business establishments with 5,118 employees (ZIP Codes Business Patterns 2023).
- Construction: 101
- Professional, Scientific, and Technical Services: 84
- Retail Trade: 50
- Accommodation and Food Services: 47
- Health Care and Social Assistance: 44
- Other Services (except Public Administration): 39
- Administrative and Support and Waste Management and Remediation Services: 34
- Finance and Insurance: 27
EDDM carrier routes
78070 has 17 USPS carrier routes with 9,863 residential and 442 business mailboxes. Open the EDDM route map.
Carrier routes in 78070
78070 has 17 USPS carrier routes (9 rural (R), 8 highway contract (H)) with 9,863 residential and 442 business mailboxes. Routes range from 381 homes (R017) to 872 homes (R018); the median route has 554 homes. The Census counted 7,621 households in 78070 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 5 |
| 500–749 | 10 |
| 750–999 | 2 |
| 1,000–1,499 | 0 |
| 1,500+ | 0 |
Best routes in 78070 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R014 — Est. median household income $195,161, 693 homes
- Route R012 — Est. median household income $136,867, 551 homes
- Route R010 — Est. median household income $131,088, 478 homes
- Route R016 — Est. median household income $130,499, 627 homes
- Route H004 — Est. median household income $126,689, 674 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 R014 — Est. families with children under 18 38.6%, 693 homes
- Route H002 — Est. families with children under 18 34.9%, 674 homes
- Route R012 — Est. families with children under 18 34.5%, 551 homes
- Route H006 — Est. families with children under 18 32.8%, 517 homes
- Route R010 — Est. families with children under 18 31.4%, 478 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 R016 — Est. owner-occupied homes 95.6%, 627 homes
- Route R014 — Est. owner-occupied homes 95.1%, 693 homes
- Route R012 — Est. owner-occupied homes 94.7%, 551 homes
- Route H007 — Est. owner-occupied homes 92.4%, 566 homes
- Route R013 — Est. owner-occupied homes 90.8%, 523 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 H001 — Est. residents who moved in the past year 24.3%, 554 homes
- Route R018 — Est. residents who moved in the past year 20.1%, 872 homes
- Route H008 — Est. residents who moved in the past year 15.9%, 412 homes
- Route H007 — Est. residents who moved in the past year 15.8%, 566 homes
- Route H005 — Est. residents who moved in the past year 14.5%, 635 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 R018 — Est. homes built 2010 or later 53.9%, 872 homes
- Route H007 — Est. homes built 2010 or later 53.2%, 566 homes
- Route H006 — Est. homes built 2010 or later 47.7%, 517 homes
- Route H002 — Est. homes built 2010 or later 46.3%, 674 homes
- Route H005 — Est. homes built 2010 or later 46.0%, 635 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R015 — USPS business mailboxes 122, 454 homes
- Route R017 — USPS business mailboxes 110, 381 homes
- Route R010 — USPS business mailboxes 67, 478 homes
- Route R018 — USPS business mailboxes 62, 872 homes
- Route H004 — USPS business mailboxes 27, 674 homes
Select these 5 routes on the route map
Every carrier route in 78070
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| H001 | Highway contract | 554 | 1 | $102,425 | 80.7% | 25.9% | 24.3% |
| H002 | Highway contract | 674 | 4 | $67,019 | 79.8% | 34.9% | 5.8% |
| H003 | Highway contract | 762 | 3 | $97,919 | 86.0% | 18.7% | 14.3% |
| H004 | Highway contract | 674 | 27 | $126,689 | 87.0% | 25.9% | 9.3% |
| H005 | Highway contract | 635 | 8 | $109,012 | 87.3% | 21.5% | 14.5% |
| H006 | Highway contract | 517 | 1 | $75,459 | 82.3% | 32.8% | 7.0% |
| H007 | Highway contract | 566 | 1 | $107,099 | 92.4% | 21.0% | 15.8% |
| H008 | Highway contract | 412 | 1 | $118,462 | 83.9% | 20.3% | 15.9% |
| R010 | Rural | 478 | 67 | $131,088 | 88.7% | 31.4% | 11.9% |
| R011 | Rural | 490 | 17 | $93,858 | 84.1% | 26.2% | 13.0% |
| R012 | Rural | 551 | 10 | $136,867 | 94.7% | 34.5% | 9.3% |
| R013 | Rural | 523 | 2 | $125,921 | 90.8% | 28.6% | 11.9% |
| R014 | Rural | 693 | 4 | $195,161 | 95.1% | 38.6% | 7.8% |
| R015 | Rural | 454 | 122 | $108,065 | 86.5% | 31.2% | 6.9% |
| R016 | Rural | 627 | 2 | $130,499 | 95.6% | 27.2% | 7.8% |
| R017 | Rural | 381 | 110 | $116,555 | 89.1% | 29.0% | 11.3% |
| R018 | Rural | 872 | 62 | $92,944 | 76.8% | 21.1% | 20.1% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78070 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
- 78004 (8.1 mi)
- 78163 — Bulverde city, TX (8.8 mi)
- 78133 — Canyon Lake CDP, TX (9.4 mi)
- 78027 (9.5 mi)
- 78623 — Canyon Lake CDP, TX (12.3 mi)
- 78606 — Blanco city, TX (13.7 mi)
- 78261 — San Antonio city, TX (14 mi)
- 78260 — Timberwood Park CDP, TX (14.3 mi)
Areas that include 78070
- Canyon Lake, TX ZIP codes — 4 ZIP codes
- Bulverde, TX ZIP codes — 2 ZIP codes
- Spring Branch, TX ZIP codes — 1 ZIP code
- Comal County ZIP codes — 9 ZIP codes
- San Antonio ZIP code map — 121 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 17 of 104: highest median household income in the San Antonio area
- No. 9 of 101: highest median home value in the San Antonio area
- No. 12 of 104: highest share of owner-occupied homes in the San Antonio area
- No. 13 of 104: highest median age in the San Antonio area
- No. 16 of 104: fastest population growth in the San Antonio area
- No. 3 of 9: highest median home value in Comal County
- No. 5 of 9: highest share of owner-occupied homes in Comal County
- No. 3 of 9: highest share of residents who moved in during the past year in Comal County
- No. 4 of 9: highest median age in Comal County
Mail every home in 78070
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.
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 78070, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78070 in?
- 78070 is a Spring Branch, TX mailing address. By land area, 21% lies inside Canyon Lake, 2% lies inside Bulverde and 2% lies inside Spring Branch; the rest is outside any Census-defined city or community.
- What county is 78070 in?
- 78070 is mostly in Comal County (82% of its land), with smaller parts in Kendall and Blanco counties.
- What is the population of 78070?
- About 20,200 people (±1,696), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,618.
- What is the median household income in 78070?
- $115,175 (±$12,467), 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 78070?
- 17 USPS carrier routes with 9,863 residential and 442 business mailboxes (10,307 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78070?
- The closest, measured center to center: 78004 (8.1 mi), 78163 (8.8 mi, Bulverde), 78133 (9.4 mi, Canyon Lake), 78027 (9.5 mi), 78623 (12.3 mi, Canyon Lake) and 78606 (13.7 mi, Blanco).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.