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Where 78756 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 78756 into a pocket calculator and turn it upside down: gSLBL — not quite a word, sorry.
- ➕ As a number, 78,756 = 2 × 2 × 3 × 6563. Its digits add up to 33, a total 456 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001110100100 - 🏠 Its numerical neighbours: 78755 (Austin, TX, 2 mi away) and 78757 (Austin, TX, 2 mi away).
- 🔄 Backwards, 78756 becomes 65787 — and that is a real ZIP code: Roach, MO, 602 miles away.
- 👥 22 other ZIP codes are made of exactly the same digits (58776, 65778, 65787, 67578, 67758, 67857, …). The farthest-flung twin is 58776 in Ross, ND, 1,265 miles away.
- 🧭 Farther south than 92% of all ZIP codes, and farther west than 76%.
- 🎯659 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78756 and you would come out at 30.32°S, 82.26°E — 1,457 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 1.7 square miles of land, 78756 is bigger than 11% of ZIP codes — room for about 1.3 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 9,197This ZIP9,197 |
|---|---|
| Households | 4,637This ZIP4,637 |
| Housing units | 4,902This ZIP4,902 |
| Median age | 36.2This ZIP36.2Texas35.6US 38.9 |
| Median household income | $94,701This ZIP$94,701Texas$78,476US $80,734 |
| Median home value | $832,000This ZIP$832,000Texas$283,800US $332,700 |
| Median gross rent | $1,433This ZIP$1,433Texas$1,403US $1,413 |
| Bachelor's degree or higher | 72.7%This ZIP72.7% |
| Mean commute | 18.0 minThis ZIP18.0 min |
| Population density | 5,503.9 / sq miThis ZIP5,503.9 / sq mi |
Business and tax activity
| Business establishments | 624This ZIP624 |
|---|---|
| Employees | 9,051This ZIP9,051 |
| Annual payroll | $616,391,000This ZIP$616,391,000 |
| Tax returns filed | 4,610This ZIP4,610 |
| Total adjusted gross income | $799,732,000This ZIP$799,732,000 |
Land area
| Land area | 1.67 sq miThis ZIP1.67 sq mi |
|---|---|
| Water area | 0.00 sq mi |
Other place names in 78756
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78756
| ZIP | City | Distance |
|---|---|---|
78751 | Austin, TX | 1.3 mi |
73301 | Austin, TX | 1.9 mi |
73344 | Austin, TX | 1.9 mi |
78651 | Mc Neil, TX | 1.9 mi |
78708 | Austin, TX | 1.9 mi |
78709 | Austin, TX | 1.9 mi |
78711 | Austin, TX | 1.9 mi |
78718 | Austin, TX | 1.9 mi |
78720 | Austin, TX | 1.9 mi |
78755 | Austin, TX | 1.9 mi |
Find every ZIP code within 10 miles of 78756 →
Questions about this ZIP code
Where is ZIP code 78756?
78756 is in Austin, Texas, in Travis County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.3223, -97.7402.
What county is 78756 in?
78756 lies in Travis County.
What area code is 78756?
Austin uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78756 in?
78756 uses America/Chicago.
How many people live in 78756?
About 9,197 people live in ZIP code 78756, in 4,637 households, at 5,503.9 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 78756?
$94,701 a year, against $78,476 across Texas.
What ZIP codes are near 78756?
The closest are 78751 (1.3 mi), 73301 (1.9 mi), 73344 (1.9 mi), 78651 (1.9 mi) and 78708 (1.9 mi).
Is 78756 a PO Box ZIP code?
78756 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78756 ZIP Code — Austin, Texas (Travis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78756
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78756.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.