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Where 78757 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 78757 into a pocket calculator and turn it upside down: LSLBL — not quite a word, sorry.
- ➕ As a number, 78,757 = 7 × 11251. Its digits add up to 34, a total 322 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001110100101 - 🏠 Its numerical neighbours: 78756 (Austin, TX, 2 mi away) and 78758 (Austin, TX, 3 mi away).
- 🔄 Backwards, 78757 becomes 75787, which is not a ZIP code at all.
- 👥 8 other ZIP codes are made of exactly the same digits (57787, 75778, 77578, 77587, 77857, 77875, …). The farthest-flung twin is 57787 in Union Center, SD, 1,025 miles away.
- 🧭 Farther south than 92% of all ZIP codes, and farther west than 76%.
- 🎯657 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78757 and you would come out at 30.35°S, 82.27°E — 1,456 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 5.0 square miles of land, 78757 is bigger than 19% of ZIP codes — room for about 3.8 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 23,856This ZIP23,856 |
|---|---|
| Households | 11,335This ZIP11,335 |
| Housing units | 11,985This ZIP11,985 |
| Median age | 39.1This ZIP39.1Texas35.6US 38.9 |
| Median household income | $103,860This ZIP$103,860Texas$78,476US $80,734 |
| Median home value | $655,900This ZIP$655,900Texas$283,800US $332,700 |
| Median gross rent | $1,723This ZIP$1,723Texas$1,403US $1,413 |
| Bachelor's degree or higher | 67.8%This ZIP67.8% |
| Mean commute | 19.7 minThis ZIP19.7 min |
| Population density | 4,818.4 / sq miThis ZIP4,818.4 / sq mi |
Business and tax activity
| Business establishments | 1,130This ZIP1,130 |
|---|---|
| Employees | 14,816This ZIP14,816 |
| Annual payroll | $865,426,000This ZIP$865,426,000 |
| Tax returns filed | 11,950This ZIP11,950 |
| Total adjusted gross income | $1,768,859,000This ZIP$1,768,859,000 |
Land area
| Land area | 4.95 sq miThis ZIP4.95 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 78757
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78757
| ZIP | City | Distance |
|---|---|---|
78710 | Austin, TX | 1.0 mi |
78756 | Austin, TX | 2.1 mi |
78731 | Austin, TX | 2.1 mi |
78752 | Austin, TX | 2.2 mi |
78751 | Austin, TX | 2.9 mi |
73301 | Austin, TX | 2.9 mi |
73344 | Austin, TX | 2.9 mi |
78651 | Mc Neil, TX | 2.9 mi |
78708 | Austin, TX | 2.9 mi |
78709 | Austin, TX | 2.9 mi |
Find every ZIP code within 10 miles of 78757 →
Questions about this ZIP code
Where is ZIP code 78757?
78757 is in Austin, Texas, in Travis County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.3517, -97.7327.
What county is 78757 in?
78757 lies in Travis County.
What area code is 78757?
Austin uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78757 in?
78757 uses America/Chicago.
How many people live in 78757?
About 23,856 people live in ZIP code 78757, in 11,335 households, at 4,818.4 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 78757?
$103,860 a year, against $78,476 across Texas.
What ZIP codes are near 78757?
The closest are 78710 (1 mi), 78756 (2.1 mi), 78731 (2.1 mi), 78752 (2.2 mi) and 78751 (2.9 mi).
Is 78757 a PO Box ZIP code?
78757 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78757 ZIP Code — Austin, Texas (Travis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78757
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78757.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.