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Where 78735 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 78735 into a pocket calculator and turn it upside down: SELBL — not quite a word, sorry.
- ➕ As a number, 78,735 = 3 × 5 × 29 × 181. Its digits add up to 30, a total 1,024 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001110001111 - 🏠 Its numerical neighbours: 78734 (Austin, TX, 9 mi away) and 78736 (Austin, TX, 5 mi away).
- 🔄 Backwards, 78735 becomes 53787, which is not a ZIP code at all.
- 👥 31 other ZIP codes are made of exactly the same digits (37857, 38577, 53778, 57738, 57783, 58377, …). The farthest-flung twin is 58737 in Flaxton, ND, 1,310 miles away.
- 🧭 Farther south than 92% of all ZIP codes, and farther west than 77%.
- 🎯662 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78735 and you would come out at 30.27°S, 82.13°E — 1,458 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 20.2 square miles of land, 78735 is bigger than 38% of ZIP codes — room for about 15 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 20,996This ZIP20,996 |
|---|---|
| Households | 9,791This ZIP9,791 |
| Housing units | 10,228This ZIP10,228 |
| Median age | 38.3This ZIP38.3Texas35.6US 38.9 |
| Median household income | $139,191This ZIP$139,191Texas$78,476US $80,734 |
| Median home value | $867,500This ZIP$867,500Texas$283,800US $332,700 |
| Median gross rent | $2,005This ZIP$2,005Texas$1,403US $1,413 |
| Bachelor's degree or higher | 71.4%This ZIP71.4% |
| Mean commute | 21.2 minThis ZIP21.2 min |
| Population density | 1,039.8 / sq miThis ZIP1,039.8 / sq mi |
Business and tax activity
| Business establishments | 928This ZIP928 |
|---|---|
| Employees | 20,142This ZIP20,142 |
| Annual payroll | $2,995,575,000This ZIP$2,995,575,000 |
| Tax returns filed | 10,360This ZIP10,360 |
| Total adjusted gross income | $3,335,452,000This ZIP$3,335,452,000 |
Land area
| Land area | 20.19 sq miThis ZIP20.19 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 78735
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78735
| ZIP | City | Distance |
|---|---|---|
78716 | Austin, TX | 3.3 mi |
78733 | Austin, TX | 3.7 mi |
78749 | Austin, TX | 3.7 mi |
78746 | Austin, TX | 4.0 mi |
78736 | Austin, TX | 5.0 mi |
78745 | Austin, TX | 6.0 mi |
78703 | Austin, TX | 6.4 mi |
78704 | Austin, TX | 6.4 mi |
78739 | Austin, TX | 6.6 mi |
78730 | Austin, TX | 6.8 mi |
Find every ZIP code within 10 miles of 78735 →
Questions about this ZIP code
Where is ZIP code 78735?
78735 is in Austin, Texas, in Travis County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.2691, -97.8688.
What county is 78735 in?
78735 lies in Travis County.
What area code is 78735?
Austin uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78735 in?
78735 uses America/Chicago.
How many people live in 78735?
About 20,996 people live in ZIP code 78735, in 9,791 households, at 1,039.8 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 78735?
$139,191 a year, against $78,476 across Texas.
What ZIP codes are near 78735?
The closest are 78716 (3.3 mi), 78733 (3.7 mi), 78749 (3.7 mi), 78746 (4 mi) and 78736 (5 mi).
Is 78735 a PO Box ZIP code?
78735 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78735 ZIP Code — Austin, Texas (Travis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78735
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78735.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.