78729 ZIP Code, Austin, TX
78729 is a ZIP code in Austin, Texas — mostly in Williamson County (88% of its land), with smaller parts in Travis County. It covers 9.8 square miles of land, centered about 13 miles north of downtown Austin. The closest ZIP codes are 78750, 78717 and 78727. 30,460 people live here in 14,500 households. At about 3,104 people per square mile it has suburban density, and most households rent (39% own). Median household income is $86,438, above the Texas median of $78,476.
Quick facts
- Mailing city: Austin, TX
- County: Williamson County
- Metro area: Austin
- Land area: 9.8 sq mi
- Population: 30,460
- Median household income: $86,438
- Carrier routes: 14 (15,015 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 30,460 |
| Households | 14,500 |
| Median household income | $86,438 |
| Income per person | $56,393 |
| Median age | 34.9 |
| Homeowners | 38.5% |
| Median home value | $476,200 |
| Median rent | $1,678 |
| Bachelor's degree or higher | 62.5% |
| Average commute (minutes) | 24.8 |
| Households with kids under 18 | 24.9% |
| Moved in the past year | 17.8% |
| Below the poverty line | 6.5% |
| Broadband internet | 95.9% |
| Speak a non-English language at home | 22.8% |
Household income
| % of households | Value |
|---|---|
| <$10K | 4.6% |
| $10–15K | 1.4% |
| $15–25K | 4.1% |
| $25–35K | 6.0% |
| $35–50K | 7.7% |
| $50–75K | 19.5% |
| $75–100K | 14.0% |
| $100–150K | 16.4% |
| $150–200K | 11.2% |
| $200K+ | 15.1% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.6% |
| 10–19 | 8.4% |
| 20–24 | 8.0% |
| 25–34 | 22.3% |
| 35–44 | 18.3% |
| 45–54 | 13.4% |
| 55–64 | 9.1% |
| 65–74 | 6.1% |
| 75+ | 2.8% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 24.8% |
| Owned outright | 11.8% |
| Rented | 57.1% |
| Vacant | 6.2% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 41.5% |
| Townhome | 6.2% |
| 2–4 units | 8.2% |
| 5–19 units | 23.1% |
| 20+ units | 20.3% |
| Mobile / other | 0.8% |
Businesses in 78729
595 business establishments with 13,417 employees (ZIP Codes Business Patterns 2023).
- Professional, Scientific, and Technical Services: 97
- Health Care and Social Assistance: 63
- Retail Trade: 58
- Other Services (except Public Administration): 55
- Construction: 53
- Accommodation and Food Services: 50
- Real Estate and Rental and Leasing: 47
- Administrative and Support and Waste Management and Remediation Services: 42
EDDM carrier routes
78729 has 14 USPS carrier routes with 15,015 residential and 535 business mailboxes. Open the EDDM route map.
Carrier routes in 78729
78729 has 14 USPS carrier routes (13 city (C), 1 rural (R)) with 15,015 residential and 535 business mailboxes. Routes range from 655 homes (C038) to 1,677 homes (C027); the median route has 1,153 homes. The Census counted 14,500 households in 78729 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 1 |
| 750–999 | 1 |
| 1,000–1,499 | 10 |
| 1,500+ | 1 |
Best routes in 78729 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route C028 — Est. median household income $118,926, 819 homes
- Route C036 — Est. median household income $116,225, 1,153 homes
- Route C042 — Est. median household income $107,239, 1,234 homes
- Route C031 — Est. median household income $104,089, 1,273 homes
- Route C037 — Est. median household income $97,591, 1,129 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 C019 — Est. families with children under 18 35.4%, 1,223 homes
- Route C028 — Est. families with children under 18 30.3%, 819 homes
- Route C030 — Est. families with children under 18 29.1%, 1,494 homes
- Route C038 — Est. families with children under 18 27.0%, 655 homes
- Route C042 — Est. families with children under 18 26.9%, 1,234 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 C028 — Est. owner-occupied homes 76.8%, 819 homes
- Route C039 — Est. owner-occupied homes 66.0%, 1,038 homes
- Route C038 — Est. owner-occupied homes 65.2%, 655 homes
- Route C019 — Est. owner-occupied homes 60.7%, 1,223 homes
- Route C042 — Est. owner-occupied homes 57.3%, 1,234 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 C025 — Est. residents who moved in the past year 27.2%, 1,178 homes
- Route C024 — Est. residents who moved in the past year 24.1%, 1,003 homes
- Route C031 — Est. residents who moved in the past year 21.3%, 1,273 homes
- Route C027 — Est. residents who moved in the past year 20.8%, 1,677 homes
- Route C037 — Est. residents who moved in the past year 20.2%, 1,129 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 C031 — Est. homes built 2010 or later 40.5%, 1,273 homes
- Route C037 — Est. homes built 2010 or later 32.6%, 1,129 homes
- Route C036 — Est. homes built 2010 or later 27.7%, 1,153 homes
- Route C042 — Est. homes built 2010 or later 17.9%, 1,234 homes
- Route C025 — Est. homes built 2010 or later 14.4%, 1,178 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route C024 — USPS business mailboxes 165, 1,003 homes
- Route C025 — USPS business mailboxes 159, 1,178 homes
- Route C021 — USPS business mailboxes 68, 1,139 homes
- Route C036 — USPS business mailboxes 37, 1,153 homes
- Route R083 — USPS business mailboxes 26, 0 homes
Select these 5 routes on the route map
Every carrier route in 78729
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| C019 | City | 1,223 | 2 | $96,424 | 60.7% | 35.4% | 11.6% |
| C021 | City | 1,139 | 68 | $83,880 | 45.3% | 18.9% | 12.3% |
| C024 | City | 1,003 | 165 | $74,243 | 23.8% | 21.5% | 24.1% |
| C025 | City | 1,178 | 159 | $71,360 | 10.9% | 18.4% | 27.2% |
| C027 | City | 1,677 | 15 | $60,226 | 33.8% | 22.0% | 20.8% |
| C028 | City | 819 | 1 | $118,926 | 76.8% | 30.3% | 12.4% |
| C030 | City | 1,494 | 21 | $88,433 | 34.7% | 29.1% | 12.1% |
| C031 | City | 1,273 | 21 | $104,089 | 34.7% | 25.6% | 21.3% |
| C036 | City | 1,153 | 37 | $116,225 | 46.9% | 24.0% | 15.3% |
| C037 | City | 1,129 | 4 | $97,591 | 28.6% | 25.4% | 20.2% |
| C038 | City | 655 | 0 | $88,594 | 65.2% | 27.0% | 9.9% |
| C039 | City | 1,038 | 14 | $95,341 | 66.0% | 17.5% | 15.8% |
| C042 | City | 1,234 | 2 | $107,239 | 57.3% | 26.9% | 13.8% |
| R083 | Rural | 0 | 26 | $86,891 | — | — | — |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78729 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
- 78750 — Austin city, TX (2.1 mi)
- 78717 — Austin city, TX (2.2 mi)
- 78727 — Austin city, TX (3 mi)
- 78759 — Austin city, TX (3.8 mi)
- 78728 — Austin city, TX (4.2 mi)
- 78613 — Cedar Park city, TX (5.1 mi)
- 78726 — Austin city, TX (5.3 mi)
- 78758 — Austin city, TX (5.6 mi)
Areas that include 78729
- Austin, TX ZIP codes — 46 ZIP codes
- Travis County ZIP codes — 56 ZIP codes
- Williamson County ZIP codes — 24 ZIP codes
- Austin ZIP code map — 89 ZIP codes
- Texas ZIP code data
Where it ranks
- No. 23 of 83: highest share of residents who moved in during the past year in the Austin area
- No. 25 of 83: lowest median age in the Austin area
- No. 5 of 22: highest share of residents who moved in during the past year in Williamson County
- No. 6 of 22: lowest median age in Williamson County
Mail every home in 78729
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) 78729, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78729 in?
- 78729 is a Austin, TX mailing address. By land area, 73% lies inside Austin; the rest is outside any Census-defined city or community.
- What county is 78729 in?
- 78729 is mostly in Williamson County (88% of its land), with smaller parts in Travis County.
- What is the population of 78729?
- About 30,460 people (±1,895), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 31,829.
- What is the median household income in 78729?
- $86,438 (±$6,660), 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 78729?
- 14 USPS carrier routes with 15,015 residential and 535 business mailboxes (15,550 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78729?
- The closest, measured center to center: 78750 (2.1 mi, Austin), 78717 (2.2 mi, Austin), 78727 (3 mi, Austin), 78759 (3.8 mi, Austin), 78728 (4.2 mi, Austin) and 78613 (5.1 mi, Cedar Park).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.