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Where 78704 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 78704 into a pocket calculator and turn it upside down: hOLBL — not quite a word, sorry.
- ➕ As a number, 78,704 = 2 × 2 × 2 × 2 × 4919. Its digits add up to 26, a total 2,038 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001101110000 - 🏠 Its numerical neighbours: 78703 (Austin, TX, 3 mi away) and 78705 (Austin, TX, 4 mi away).
- 🔄 Backwards, 78704 becomes 40787, which is not a ZIP code at all.
- 👥 24 other ZIP codes are made of exactly the same digits (04787, 07748, 07847, 07874, 47708, 47807, …). The farthest-flung twin is 04787 in Westfield, ME, 1,949 miles away.
- 🧭 Farther south than 92% of all ZIP codes, and farther west than 76%.
- 🎯664 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78704 and you would come out at 30.24°S, 82.23°E — 1,462 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 12m.
- 📏 At 8.8 square miles of land, 78704 is bigger than 25% of ZIP codes — room for about 6.7 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 50,688This ZIP50,688 |
|---|---|
| Households | 27,940This ZIP27,940 |
| Housing units | 30,002This ZIP30,002 |
| Median age | 34.5This ZIP34.5Texas35.6US 38.9 |
| Median household income | $106,897This ZIP$106,897Texas$78,476US $80,734 |
| Median home value | $916,100This ZIP$916,100Texas$283,800US $332,700 |
| Median gross rent | $1,801This ZIP$1,801Texas$1,403US $1,413 |
| Bachelor's degree or higher | 70.5%This ZIP70.5% |
| Mean commute | 20.2 minThis ZIP20.2 min |
| Population density | 5,779.0 / sq miThis ZIP5,779.0 / sq mi |
Business and tax activity
| Business establishments | 2,466This ZIP2,466 |
|---|---|
| Employees | 38,652This ZIP38,652 |
| Annual payroll | $2,409,653,000This ZIP$2,409,653,000 |
| Tax returns filed | 25,760This ZIP25,760 |
| Total adjusted gross income | $4,789,807,000This ZIP$4,789,807,000 |
Land area
| Land area | 8.77 sq miThis ZIP8.77 sq mi |
|---|---|
| Water area | 0.10 sq miThis ZIP0.10 sq mi |
Other place names in 78704
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78704
| ZIP | City | Distance |
|---|---|---|
78713 | Austin, TX | 2.1 mi |
78714 | Austin, TX | 2.1 mi |
78715 | Austin, TX | 2.1 mi |
78766 | Austin, TX | 2.1 mi |
78767 | Austin, TX | 2.1 mi |
78768 | Austin, TX | 2.1 mi |
78799 | Austin, TX | 2.1 mi |
78701 | Austin, TX | 2.3 mi |
78745 | Austin, TX | 3.2 mi |
78741 | Austin, TX | 3.2 mi |
Find every ZIP code within 10 miles of 78704 →
Questions about this ZIP code
Where is ZIP code 78704?
78704 is in Austin, Texas, in Travis County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.2430, -97.7651.
What county is 78704 in?
78704 lies in Travis County.
What area code is 78704?
Austin uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78704 in?
78704 uses America/Chicago.
How many people live in 78704?
About 50,688 people live in ZIP code 78704, in 27,940 households, at 5,779.0 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 78704?
$106,897 a year, against $78,476 across Texas.
What ZIP codes are near 78704?
The closest are 78713 (2.1 mi), 78714 (2.1 mi), 78715 (2.1 mi), 78766 (2.1 mi) and 78767 (2.1 mi).
Is 78704 a PO Box ZIP code?
78704 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78704 ZIP Code — Austin, Texas (Travis County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78704
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78704.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.