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Where 78730 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 78730 into a pocket calculator and turn it upside down: OELBL — not quite a word, sorry.
- ➕ As a number, 78,730 = 2 × 5 × 7873. Its digits add up to 25, a total 2,242 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001110001010 - 🏠 Its numerical neighbours: 78729 (Austin, TX, 8 mi away) and 78731 (Austin, TX, 4 mi away).
- 🔄 Backwards, 78730 becomes 03787, which is not a ZIP code at all.
- 👥 25 other ZIP codes are made of exactly the same digits (07738, 07837, 37078, 37087, 37708, 37807, …). The farthest-flung twin is 07738 in Lincroft, NJ, 1,497 miles away.
- 🧭 Farther south than 92% of all ZIP codes, and farther west than 77%.
- 🎯655 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78730 and you would come out at 30.36°S, 82.16°E — 1,453 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 11m.
- 📏 At 15.1 square miles of land, 78730 is bigger than 33% of ZIP codes — room for about 11 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 9,142This ZIP9,142 |
|---|---|
| Households | 4,090This ZIP4,090 |
| Housing units | 4,349This ZIP4,349 |
| Median age | 42.9This ZIP42.9Texas35.6US 38.9 |
| Median household income | $158,673This ZIP$158,673Texas$78,476US $80,734 |
| Median home value | $1,014,700This ZIP$1,014,700Texas$283,800US $332,700 |
| Median gross rent | $1,860This ZIP$1,860Texas$1,403US $1,413 |
| Bachelor's degree or higher | 73.6%This ZIP73.6% |
| Mean commute | 24.5 minThis ZIP24.5 min |
| Population density | 606.9 / sq miThis ZIP606.9 / sq mi |
Business and tax activity
| Business establishments | 446This ZIP446 |
|---|---|
| Employees | 10,241This ZIP10,241 |
| Annual payroll | $1,085,278,000This ZIP$1,085,278,000 |
| Tax returns filed | 4,430This ZIP4,430 |
| Total adjusted gross income | $1,445,807,000This ZIP$1,445,807,000 |
Land area
| Land area | 15.06 sq miThis ZIP15.06 sq mi |
|---|---|
| Water area | 0.41 sq miThis ZIP0.41 sq mi |
Other place names in 78730
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78730
| ZIP | City | Distance |
|---|---|---|
78732 | Austin, TX | 3.3 mi |
78716 | Austin, TX | 3.5 mi |
78733 | Austin, TX | 4.0 mi |
78731 | Austin, TX | 4.4 mi |
78726 | Austin, TX | 4.6 mi |
73301 | Austin, TX | 4.8 mi |
73344 | Austin, TX | 4.8 mi |
78651 | Mc Neil, TX | 4.8 mi |
78708 | Austin, TX | 4.8 mi |
78709 | Austin, TX | 4.8 mi |
Find every ZIP code within 10 miles of 78730 →
Questions about this ZIP code
Where is ZIP code 78730?
78730 is in Austin, Texas, in Travis County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.3636, -97.8398.
What county is 78730 in?
78730 lies in Travis County.
What area code is 78730?
Austin uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78730 in?
78730 uses America/Chicago.
How many people live in 78730?
About 9,142 people live in ZIP code 78730, in 4,090 households, at 606.9 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 78730?
$158,673 a year, against $78,476 across Texas.
What ZIP codes are near 78730?
The closest are 78732 (3.3 mi), 78716 (3.5 mi), 78733 (4 mi), 78731 (4.4 mi) and 78726 (4.6 mi).
Is 78730 a PO Box ZIP code?
78730 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78730 ZIP Code — Austin, Texas (Travis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78730
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78730.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.