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Where 78733 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 78733 into a pocket calculator and turn it upside down: EELBL — not quite a word, sorry.
- ➕ As a number, 78,733 = 43 × 1831. Its digits add up to 28, a total 1,520 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001110001101 - 🏠 Its numerical neighbours: 78732 (Austin, TX, 4 mi away) and 78734 (Austin, TX, 6 mi away).
- 🔄 Backwards, 78733 becomes 33787, which is not a ZIP code at all.
- 👥 15 other ZIP codes are made of exactly the same digits (33778, 33877, 37378, 37387, 37738, 37873, …). The farthest-flung twin is 33877 in Waverly, FL, 994 miles away.
- 🧭 Farther south than 92% of all ZIP codes, and farther west than 77%.
- 🎯658 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78733 and you would come out at 30.32°S, 82.12°E — 1,454 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 11.2 square miles of land, 78733 is bigger than 29% of ZIP codes — room for about 8.5 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 9,029This ZIP9,029 |
|---|---|
| Households | 3,171This ZIP3,171 |
| Housing units | 3,427This ZIP3,427 |
| Median age | 43.7This ZIP43.7Texas35.6US 38.9 |
| Median household income | $206,368This ZIP$206,368Texas$78,476US $80,734 |
| Median home value | $1,008,600This ZIP$1,008,600Texas$283,800US $332,700 |
| Median gross rent | $1,925This ZIP$1,925Texas$1,403US $1,413 |
| Bachelor's degree or higher | 77.0%This ZIP77.0% |
| Mean commute | 26.0 minThis ZIP26.0 min |
| Population density | 806.2 / sq miThis ZIP806.2 / sq mi |
Business and tax activity
| Business establishments | 272This ZIP272 |
|---|---|
| Employees | 2,203This ZIP2,203 |
| Annual payroll | $166,493,000This ZIP$166,493,000 |
| Tax returns filed | 4,070This ZIP4,070 |
| Total adjusted gross income | $1,762,497,000This ZIP$1,762,497,000 |
Land area
| Land area | 11.20 sq miThis ZIP11.20 sq mi |
|---|---|
| Water area | 0.23 sq miThis ZIP0.23 sq mi |
Other place names in 78733
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78733
| ZIP | City | Distance |
|---|---|---|
78716 | Austin, TX | 1.6 mi |
78735 | Austin, TX | 3.7 mi |
78730 | Austin, TX | 4.0 mi |
78732 | Austin, TX | 4.1 mi |
78746 | Austin, TX | 4.8 mi |
78734 | Austin, TX | 5.5 mi |
78738 | Austin, TX | 6.3 mi |
78736 | Austin, TX | 6.4 mi |
73301 | Austin, TX | 6.8 mi |
73344 | Austin, TX | 6.8 mi |
Find every ZIP code within 10 miles of 78733 →
Questions about this ZIP code
Where is ZIP code 78733?
78733 is in Austin, Texas, in Travis County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.3214, -97.8847.
What county is 78733 in?
78733 lies in Travis County.
What area code is 78733?
Austin uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78733 in?
78733 uses America/Chicago.
How many people live in 78733?
About 9,029 people live in ZIP code 78733, in 3,171 households, at 806.2 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 78733?
$206,368 a year, against $78,476 across Texas.
What ZIP codes are near 78733?
The closest are 78716 (1.6 mi), 78735 (3.7 mi), 78730 (4 mi), 78732 (4.1 mi) and 78746 (4.8 mi).
Is 78733 a PO Box ZIP code?
78733 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78733 ZIP Code — Austin, Texas (Travis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78733
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78733.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.