78737 ZIP Code, Austin, TX
78737 is a ZIP code in Austin, Texas — mostly in Hays County (71% of its land), with smaller parts in Travis County. It covers 36 square miles of land, centered about 14 miles southwest of downtown Austin. The closest ZIP codes are 78739, 78736 and 78619. 27,023 people live here in 9,145 households. With about 742 people per square mile it is lightly settled, and most homes are owner-occupied (88%). Median household income is $168,920, well above the Texas median of $78,476; 47% of households have children under 18.
Quick facts
- Mailing city: Austin, TX
- County: Hays County
- Metro area: Austin
- Land area: 36 sq mi
- Population: 27,023
- Median household income: $168,920
- Carrier routes: 15 (9,330 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 27,023 |
| Households | 9,145 |
| Median household income | $168,920 |
| Income per person | $74,677 |
| Median age | 39.5 |
| Homeowners | 87.7% |
| Median home value | $765,000 |
| Median rent | $2,131 |
| Bachelor's degree or higher | 66.9% |
| Average commute (minutes) | 29.4 |
| Households with kids under 18 | 46.6% |
| Moved in the past year | 7.6% |
| Below the poverty line | 4.6% |
| Broadband internet | 95.7% |
| Speak a non-English language at home | 11.9% |
Household income
| % of households | Value |
|---|---|
| <$10K | 0.6% |
| $10–15K | 1.0% |
| $15–25K | 1.9% |
| $25–35K | 3.8% |
| $35–50K | 4.0% |
| $50–75K | 5.2% |
| $75–100K | 7.4% |
| $100–150K | 17.8% |
| $150–200K | 14.1% |
| $200K+ | 44.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 18.0% |
| 10–19 | 15.0% |
| 20–24 | 2.6% |
| 25–34 | 6.8% |
| 35–44 | 18.8% |
| 45–54 | 15.1% |
| 55–64 | 9.4% |
| 65–74 | 8.7% |
| 75+ | 5.7% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 62.6% |
| Owned outright | 22.8% |
| Rented | 11.8% |
| Vacant | 2.7% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 88.8% |
| Townhome | 0.2% |
| 2–4 units | 2.7% |
| 5–19 units | 1.2% |
| 20+ units | 6.0% |
| Mobile / other | 1.1% |
Businesses in 78737
713 business establishments with 4,231 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 163
- Construction: 89
- Health Care and Social Assistance: 68
- Real Estate and Rental and Leasing: 65
- Retail Trade: 50
- Other Services (except Public Administration): 50
- Administrative and Support and Waste Management and Remediation Services: 45
- Wholesale Trade: 32
EDDM carrier routes
78737 has 15 USPS carrier routes with 9,330 residential and 450 business mailboxes. Open the EDDM route map.
Carrier routes in 78737
78737 has 15 USPS carrier routes (13 rural (R), 2 highway contract (H)) with 9,330 residential and 450 business mailboxes. Routes range from 398 homes (H003) to 1,363 homes (H001); the median route has 600 homes. The Census counted 9,145 households in 78737 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 3 |
| 500–749 | 10 |
| 750–999 | 1 |
| 1,000–1,499 | 1 |
| 1,500+ | 0 |
Best routes in 78737 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R261 — Est. median household income $200,000+, 825 homes
- Route R156 — Est. median household income $200,000+, 642 homes
- Route R099 — Est. median household income $200,000+, 627 homes
- Route R234 — Est. median household income $200,000+, 532 homes
- Route R250 — Est. median household income $200,000+, 439 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 R156 — Est. families with children under 18 60.4%, 642 homes
- Route R261 — Est. families with children under 18 57.2%, 825 homes
- Route R195 — Est. families with children under 18 57.1%, 550 homes
- Route R099 — Est. families with children under 18 56.9%, 627 homes
- Route R250 — Est. families with children under 18 53.6%, 439 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 R099 — Est. owner-occupied homes 99.1%, 627 homes
- Route R261 — Est. owner-occupied homes 97.0%, 825 homes
- Route R006 — Est. owner-occupied homes 96.0%, 600 homes
- Route R210 — Est. owner-occupied homes 94.5%, 602 homes
- Route R097 — Est. owner-occupied homes 94.3%, 510 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 R261 — Est. residents who moved in the past year 12.1%, 825 homes
- Route R234 — Est. residents who moved in the past year 11.7%, 532 homes
- Route R099 — Est. residents who moved in the past year 11.5%, 627 homes
- Route H001 — Est. residents who moved in the past year 10.9%, 1,363 homes
- Route R156 — Est. residents who moved in the past year 10.9%, 642 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 R099 — Est. homes built 2010 or later 70.4%, 627 homes
- Route R261 — Est. homes built 2010 or later 64.7%, 825 homes
- Route R156 — Est. homes built 2010 or later 61.8%, 642 homes
- Route R234 — Est. homes built 2010 or later 47.4%, 532 homes
- Route R250 — Est. homes built 2010 or later 46.4%, 439 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R089 — USPS business mailboxes 120, 399 homes
- Route R250 — USPS business mailboxes 77, 439 homes
- Route H001 — USPS business mailboxes 74, 1,363 homes
- Route R027 — USPS business mailboxes 50, 642 homes
- Route H003 — USPS business mailboxes 49, 398 homes
Select these 5 routes on the route map
Every carrier route in 78737
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| H001 | Highway contract | 1,363 | 74 | $141,164 | 73.7% | 30.9% | 10.9% |
| H003 | Highway contract | 398 | 49 | $142,144 | 83.9% | 30.6% | 4.5% |
| R006 | Rural | 600 | 37 | $179,869 | 96.0% | 50.4% | 8.5% |
| R027 | Rural | 642 | 50 | $170,103 | 93.2% | 49.5% | 6.0% |
| R070 | Rural | 521 | 6 | $155,023 | 86.3% | 38.3% | 9.6% |
| R089 | Rural | 399 | 120 | $141,948 | 80.1% | 27.4% | 7.0% |
| R097 | Rural | 510 | 1 | $155,739 | 94.3% | 40.9% | 5.4% |
| R099 | Rural | 627 | 0 | $200,000+ | 99.1% | 56.9% | 11.5% |
| R156 | Rural | 642 | 0 | $200,000+ | 79.5% | 60.4% | 10.9% |
| R179 | Rural | 680 | 16 | $176,414 | 92.9% | 42.0% | 4.1% |
| R195 | Rural | 550 | 0 | $179,561 | 84.6% | 57.1% | 7.3% |
| R210 | Rural | 602 | 17 | $187,126 | 94.5% | 47.8% | 4.7% |
| R234 | Rural | 532 | 2 | $200,000+ | 91.1% | 51.6% | 11.7% |
| R250 | Rural | 439 | 77 | $200,000+ | 88.0% | 53.6% | 8.3% |
| R261 | Rural | 825 | 1 | $200,000+ | 97.0% | 57.2% | 12.1% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78737 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
- 78739 — Austin city, TX (3.9 mi)
- 78736 — Austin city, TX (4.9 mi)
- 78619 — Driftwood CDP, TX (6.3 mi)
- 78652 — Austin city, TX (6.4 mi)
- 78749 — Austin city, TX (6.6 mi)
- 78748 — Austin city, TX (8.1 mi)
- 78735 — Austin city, TX (8.2 mi)
- 78738 — Bee Cave city, TX (9.2 mi)
Areas that include 78737
- Austin, TX ZIP codes — 46 ZIP codes
- Belterra, TX ZIP codes — 1 ZIP code
- Bear Creek, TX ZIP codes — 1 ZIP code
- Hays County ZIP codes — 8 ZIP codes
- Travis County ZIP codes — 56 ZIP codes
- Austin ZIP code map — 89 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 7 of 83: highest median household income in the Austin area
- No. 14 of 83: highest median home value in the Austin area
- No. 10 of 83: highest share of owner-occupied homes in the Austin area
- No. 5 of 83: highest share of households with children in the Austin area
- No. 6 of 81: fastest population growth in the Austin area
- No. 2 of 8: highest median household income in Hays County
- No. 2 of 8: highest median home value in Hays County
- No. 2 of 8: highest share of owner-occupied homes in Hays County
- No. 1 of 8: highest share of households with children in Hays County
- No. 4 of 8: lowest median age in Hays County
- No. 5 of 8: highest median age in Hays County
- No. 1 of 8: fastest population growth in Hays County
Mail every home in 78737
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.
Austin EDDM mailing
EDDM guides
ZIP code statistics describe the Census ZIP Code Tabulation Area (ZCTA) 78737, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78737 in?
- 78737 is a Austin, TX mailing address. By land area, 6% lies inside Belterra, 3% lies inside Bear Creek and 1% lies inside Dripping Springs; the rest is outside any Census-defined city or community.
- What county is 78737 in?
- 78737 is mostly in Hays County (71% of its land), with smaller parts in Travis County.
- What is the population of 78737?
- About 27,023 people (±2,259), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 20,996.
- What is the median household income in 78737?
- $168,920 (±$15,830), 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 78737?
- 15 USPS carrier routes with 9,330 residential and 450 business mailboxes (9,778 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78737?
- The closest, measured center to center: 78739 (3.9 mi, Austin), 78736 (4.9 mi, Austin), 78619 (6.3 mi, Driftwood), 78652 (6.4 mi, Austin), 78749 (6.6 mi, Austin) and 78748 (8.1 mi, Austin).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.