78739
ZIP 78739 is in Austin, Texas, mostly in Travis County; area codes 512 and 737; Central time. Austin has 74 ZIP codes in all.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Travis +1 more
- Metro area
- Austin-Round Rock-San Marcos, TX
- Population
- 20,659
- Coordinates
- 30.1760, -97.8909
Weather right now
Asking the National Weather Service…
Where 78739 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 78739 into a pocket calculator and turn it upside down: GELBL — not quite a word, sorry.
- ➕ As a number, 78,739 = 71 × 1109. Its digits add up to 34, a total 322 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001110010011 - 🏠 Its numerical neighbours: 78738 (Austin, TX, 11 mi away) and 78741 (Austin, TX, 11 mi away).
- 🔄 Backwards, 78739 becomes 93787, which is not a ZIP code at all.
- 👥 16 other ZIP codes are made of exactly the same digits (37879, 39877, 77389, 77983, 78379, 79378, …). The farthest-flung twin is 97378 in Sheridan, OR, 1,723 miles away.
- 🧭 Farther south than 93% of all ZIP codes, and farther west than 77%.
- 🎯668 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78739 and you would come out at 30.18°S, 82.11°E — 1,463 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 06m of daylight. Shortest: 10h 12m.
- 📏 At 11.6 square miles of land, 78739 is bigger than 29% of ZIP codes — room for about 8.8 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 20,659This ZIP20,659 |
|---|---|
| Households | 7,090This ZIP7,090 |
| Housing units | 7,180This ZIP7,180 |
| Median age | 41.1This ZIP41.1Texas35.6US 38.9 |
| Median household income | $238,559This ZIP$238,559Texas$78,476US $80,734 |
| Median home value | $808,600This ZIP$808,600Texas$283,800US $332,700 |
| Median gross rent | $3,473This ZIP$3,473Texas$1,403US $1,413 |
| Bachelor's degree or higher | 82.1%This ZIP82.1% |
| Mean commute | 28.3 minThis ZIP28.3 min |
| Population density | 1,782.8 / sq miThis ZIP1,782.8 / sq mi |
Business and tax activity
| Business establishments | 343This ZIP343 |
|---|---|
| Employees | 1,932This ZIP1,932 |
| Annual payroll | $111,987,000This ZIP$111,987,000 |
| Tax returns filed | 8,940This ZIP8,940 |
| Total adjusted gross income | $2,192,556,000This ZIP$2,192,556,000 |
Land area
| Land area | 11.59 sq miThis ZIP11.59 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Counties 78739 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Travis County | 92.2% |
| Hays County | 7.8% |
Other place names in 78739
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78739
| ZIP | City | Distance |
|---|---|---|
78652 | Manchaca, TX | 3.4 mi |
78749 | Austin, TX | 3.5 mi |
78737 | Austin, TX | 3.9 mi |
78748 | Austin, TX | 4.2 mi |
78745 | Austin, TX | 5.9 mi |
78736 | Austin, TX | 6.1 mi |
78735 | Austin, TX | 6.6 mi |
78610 | Buda, TX | 7.3 mi |
78704 | Austin, TX | 8.8 mi |
78619 | Driftwood, TX | 9.5 mi |
Find every ZIP code within 10 miles of 78739 →
Questions about this ZIP code
Where is ZIP code 78739?
78739 is in Austin, Texas, in Travis County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.1760, -97.8909.
What county is 78739 in?
78739 spans 2 counties: Travis County and Hays County. Most of it falls in Travis County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 78739?
Austin uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78739 in?
78739 uses America/Chicago.
How many people live in 78739?
About 20,659 people live in ZIP code 78739, in 7,090 households, at 1,782.8 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 78739?
$238,559 a year, against $78,476 across Texas.
What ZIP codes are near 78739?
The closest are 78652 (3.4 mi), 78749 (3.5 mi), 78737 (3.9 mi), 78748 (4.2 mi) and 78745 (5.9 mi).
Is 78739 a PO Box ZIP code?
78739 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78739 ZIP Code — Austin, Texas (Travis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78739
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78739.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.