78728 ZIP Code, Austin, TX
78728 is a ZIP code in Austin, Texas — mostly in Travis County (78% of its land), with smaller parts in Williamson County. It covers 7.7 square miles of land, centered about 13 miles north of downtown Austin. The closest ZIP codes are 78727, 78729 and 78664. 26,777 people live here in 13,169 households. At about 3,456 people per square mile it has suburban density, and most households rent (29% own). Median household income is $75,243, close to the Texas median of $78,476.
Quick facts
- Mailing city: Austin, TX
- County: Travis County
- Metro area: Austin
- Land area: 7.7 sq mi
- Population: 26,777
- Median household income: $75,243
- Carrier routes: 15 (14,485 homes)
Key figures
| Measure | Value |
|---|---|
| Residents | 26,777 |
| Households | 13,169 |
| Median household income | $75,243 |
| Income per person | $47,745 |
| Median age | 33.9 |
| Homeowners | 29.1% |
| Median home value | $437,000 |
| Median rent | $1,632 |
| Bachelor's degree or higher | 47.7% |
| Average commute (minutes) | 23.1 |
| Households with kids under 18 | 26.1% |
| Moved in the past year | 19.7% |
| Below the poverty line | 11.8% |
| Broadband internet | 95.9% |
| Speak a non-English language at home | 29.0% |
Household income
| % of households | Value |
|---|---|
| <$10K | 6.8% |
| $10–15K | 1.3% |
| $15–25K | 2.7% |
| $25–35K | 7.0% |
| $35–50K | 12.0% |
| $50–75K | 19.6% |
| $75–100K | 16.9% |
| $100–150K | 12.9% |
| $150–200K | 11.4% |
| $200K+ | 9.4% |
Age
| % of all residents | Value |
|---|---|
| <10 | 11.7% |
| 10–19 | 7.1% |
| 20–24 | 7.8% |
| 25–34 | 26.9% |
| 35–44 | 18.5% |
| 45–54 | 10.3% |
| 55–64 | 9.7% |
| 65–74 | 5.5% |
| 75+ | 2.6% |
Tenure
| % of housing units | Value |
|---|---|
| Owned, with mortgage | 19.2% |
| Owned outright | 8.0% |
| Rented | 65.9% |
| Vacant | 6.8% |
Type of building
| % of housing units | Value |
|---|---|
| Detached house | 36.1% |
| Townhome | 0.7% |
| 2–4 units | 3.2% |
| 5–19 units | 28.2% |
| 20+ units | 29.1% |
| Mobile / other | 2.7% |
Businesses in 78728
631 business establishments with 16,007 employees (ZIP Codes Business Patterns 2023).
- Construction: 77
- Wholesale Trade: 70
- Retail Trade: 58
- Professional, Scientific, and Technical Services: 58
- Other Services (except Public Administration): 54
- Manufacturing: 49
- Administrative and Support and Waste Management and Remediation Services: 49
- Accommodation and Food Services: 48
EDDM carrier routes
78728 has 15 USPS carrier routes with 14,485 residential and 842 business mailboxes. Open the EDDM route map.
Carrier routes in 78728
78728 has 15 USPS carrier routes (15 rural (R)) with 14,485 residential and 842 business mailboxes. Routes range from 508 homes (R020) to 1,322 homes (R201); the median route has 980 homes. The Census counted 13,169 households in 78728 (2020–2024 average); USPS counts current mailboxes, including new and vacant homes.
| Homes per route | Routes |
|---|---|
| 1–249 | 0 |
| 250–499 | 0 |
| 500–749 | 2 |
| 750–999 | 7 |
| 1,000–1,499 | 6 |
| 1,500+ | 0 |
Best routes in 78728 for…
Highest income
For bigger-ticket offers: remodeling, pools, financial planning, private schools.
- Route R020 — Est. median household income $125,817, 508 homes
- Route R037 — Est. median household income $113,119, 745 homes
- Route R220 — Est. median household income $109,591, 826 homes
- Route R201 — Est. median household income $102,787, 1,322 homes
- Route R051 — Est. median household income $96,294, 995 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 R051 — Est. families with children under 18 36.9%, 995 homes
- Route R037 — Est. families with children under 18 35.3%, 745 homes
- Route R136 — Est. families with children under 18 34.7%, 1,088 homes
- Route R053 — Est. families with children under 18 30.1%, 980 homes
- Route R026 — Est. families with children under 18 29.1%, 1,004 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 R037 — Est. owner-occupied homes 80.8%, 745 homes
- Route R053 — Est. owner-occupied homes 59.8%, 980 homes
- Route R051 — Est. owner-occupied homes 56.3%, 995 homes
- Route R026 — Est. owner-occupied homes 53.8%, 1,004 homes
- Route R220 — Est. owner-occupied homes 49.3%, 826 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 R057 — Est. residents who moved in the past year 38.8%, 767 homes
- Route R186 — Est. residents who moved in the past year 24.2%, 773 homes
- Route R136 — Est. residents who moved in the past year 23.8%, 1,088 homes
- Route R042 — Est. residents who moved in the past year 23.4%, 966 homes
- Route R264 — Est. residents who moved in the past year 23.0%, 922 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 R201 — Est. homes built 2010 or later 49.8%, 1,322 homes
- Route R020 — Est. homes built 2010 or later 45.2%, 508 homes
- Route R068 — Est. homes built 2010 or later 42.0%, 1,229 homes
- Route R053 — Est. homes built 2010 or later 41.4%, 980 homes
- Route R220 — Est. homes built 2010 or later 38.4%, 826 homes
Select these 5 routes on the route map
Most businesses
For B2B offers: office supplies, cleaning, IT, catering and commercial services.
- Route R264 — USPS business mailboxes 183, 922 homes
- Route R186 — USPS business mailboxes 160, 773 homes
- Route R053 — USPS business mailboxes 94, 980 homes
- Route R026 — USPS business mailboxes 73, 1,004 homes
- Route R037 — USPS business mailboxes 70, 745 homes
Select these 5 routes on the route map
Every carrier route in 78728
| Route | Type | Homes | Businesses | Est. median income | Est. owners | Est. families with kids | Est. moved in past year |
|---|---|---|---|---|---|---|---|
| R020 | Rural | 508 | 57 | $125,817 | 33.8% | 23.3% | 10.3% |
| R025 | Rural | 1,198 | 5 | $67,415 | 33.3% | 22.2% | 14.7% |
| R026 | Rural | 1,004 | 73 | $86,296 | 53.8% | 29.1% | 15.8% |
| R037 | Rural | 745 | 70 | $113,119 | 80.8% | 35.3% | 9.1% |
| R042 | Rural | 966 | 0 | $86,976 | 46.4% | 27.8% | 23.4% |
| R051 | Rural | 995 | 1 | $96,294 | 56.3% | 36.9% | 14.4% |
| R053 | Rural | 980 | 94 | $84,423 | 59.8% | 30.1% | 11.0% |
| R057 | Rural | 767 | 55 | $59,097 | 8.4% | 12.5% | 38.8% |
| R068 | Rural | 1,229 | 19 | $87,641 | 12.2% | 28.3% | 13.4% |
| R074 | Rural | 1,162 | 34 | $91,745 | 18.3% | 24.5% | 14.3% |
| R136 | Rural | 1,088 | 31 | $72,883 | 14.5% | 34.7% | 23.8% |
| R186 | Rural | 773 | 160 | $67,308 | 29.4% | 15.5% | 24.2% |
| R201 | Rural | 1,322 | 3 | $102,787 | 32.6% | 22.7% | 11.4% |
| R220 | Rural | 826 | 57 | $109,591 | 49.3% | 23.7% | 10.2% |
| R264 | Rural | 922 | 183 | $63,460 | 20.0% | 22.9% | 23.0% |
Income, owners, families and movers are estimates for each route (how we estimate them); mailbox counts are current USPS figures. Open 78728 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
- 78727 — Austin city, TX (2.5 mi)
- 78729 — Austin city, TX (4.2 mi)
- 78664 — Round Rock city, TX (4.3 mi)
- 78717 — Austin city, TX (4.7 mi)
- 78758 — Austin city, TX (4.7 mi)
- 78753 — Austin city, TX (4.9 mi)
- 78660 — Pflugerville city, TX (5.6 mi)
- 78759 — Austin city, TX (5.7 mi)
Areas that include 78728
- Austin, TX ZIP codes — 46 ZIP codes
- Wells Branch, TX ZIP codes — 1 ZIP code
- 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. 20 of 83: highest share of residents who moved in during the past year in the Austin area
- No. 18 of 83: lowest median age in the Austin area
- No. 25 of 81: fastest population growth in the Austin area
- No. 16 of 54: highest share of residents who moved in during the past year in Travis County
- No. 12 of 54: lowest median age in Travis County
- No. 9 of 53: fastest population growth in Travis County
- No. 10 of 44: lowest median age in Austin, TX
- No. 4 of 44: fastest population growth in Austin, TX
Mail every home in 78728
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) 78728, which approximates the USPS ZIP code area. Census figures: American Community Survey 5-year estimates, 2020–2024.
Frequently asked questions
- What city is 78728 in?
- 78728 is a Austin, TX mailing address. By land area, 39% lies inside Austin, 31% lies inside Wells Branch and 5% lies inside Round Rock; the rest is outside any Census-defined city or community.
- What county is 78728 in?
- 78728 is mostly in Travis County (78% of its land), with smaller parts in Williamson County.
- What is the population of 78728?
- About 26,777 people (±2,418), according to the Census Bureau's American Community Survey 5-year estimates for 2020–2024. The 2020 Census counted 25,555.
- What is the median household income in 78728?
- $75,243 (±$5,752), 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 78728?
- 15 USPS carrier routes with 14,485 residential and 842 business mailboxes (15,326 in all), from the route data stored by EDDM2GO. An EDDM mailing can target any combination of these routes.
- What ZIP codes are near 78728?
- The closest, measured center to center: 78727 (2.5 mi, Austin), 78729 (4.2 mi, Austin), 78664 (4.3 mi, Round Rock), 78717 (4.7 mi, Austin), 78758 (4.7 mi, Austin) and 78753 (4.9 mi, Austin).
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.