78613
ZIP 78613 is in Cedar Park, Texas, mostly in Williamson County; area codes 512 and 737; Central time. Cedar Park has 2 ZIP codes; the other is 78630.
- Type
- Standard
- Time zone
- America/Chicago
- County
- Williamson +1 more
- Metro area
- Austin-Round Rock-San Marcos, TX
- Population
- 89,956
- Coordinates
- 30.5071, -97.8195
Weather right now
Asking the National Weather Service…
Where 78613 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 78613 into a pocket calculator and turn it upside down: EIgBL — not quite a word, sorry.
- ➕ As a number, 78,613 = 127 × 619. Its digits add up to 25, a total 2,242 other ZIP codes share.
- 💾In binary, the way a computer stores it:
10011001100010101 - 🏠 Its numerical neighbours: 78612 (Cedar Creek, TX, 34 mi away) and 78614 (Cost, TX, 77 mi away).
- 🔄 Backwards, 78613 becomes 31687, which is not a ZIP code at all.
- 👥 43 other ZIP codes are made of exactly the same digits (13678, 13687, 13786, 16738, 16837, 16873, …). The farthest-flung twin is 13678 in Raymondville, NY, 1,585 miles away.
- 🧭 Farther south than 91% of all ZIP codes, and farther west than 77%.
- 🎯645 miles south of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 78613 and you would come out at 30.51°S, 82.18°E — 1,444 miles from Port-aux-Français, French Southern Territories, the nearest big city to that spot.
- ☀Longest day of the year: 14h 07m of daylight. Shortest: 10h 10m.
- 📏 At 27.7 square miles of land, 78613 is bigger than 44% of ZIP codes — room for about 21 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 89,956This ZIP89,956 |
|---|---|
| Households | 33,919This ZIP33,919 |
| Housing units | 34,500This ZIP34,500 |
| Median age | 37.7This ZIP37.7Texas35.6US 38.9 |
| Median household income | $125,487This ZIP$125,487Texas$78,476US $80,734 |
| Median home value | $496,200This ZIP$496,200Texas$283,800US $332,700 |
| Median gross rent | $1,815This ZIP$1,815Texas$1,403US $1,413 |
| Bachelor's degree or higher | 55.8%This ZIP55.8% |
| Mean commute | 25.1 minThis ZIP25.1 min |
| Population density | 3,248.1 / sq miThis ZIP3,248.1 / sq mi |
Business and tax activity
| Business establishments | 2,571This ZIP2,571 |
|---|---|
| Employees | 30,305This ZIP30,305 |
| Annual payroll | $1,542,865,000This ZIP$1,542,865,000 |
| Tax returns filed | 39,600This ZIP39,600 |
| Total adjusted gross income | $5,029,631,000This ZIP$5,029,631,000 |
Land area
| Land area | 27.70 sq miThis ZIP27.70 sq mi |
|---|---|
| Water area | 0.16 sq miThis ZIP0.16 sq mi |
Counties 78613 spans
A ZIP code is a mail route and ignores county lines. Shares are by overlapping land area.
| County | Share of this ZIP |
|---|---|
| Williamson County | 88.6% |
| Travis County | 11.4% |
Other place names in 78613
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 78613
| ZIP | City | Distance |
|---|---|---|
78630 | Cedar Park, TX | 0.1 mi |
78717 | Austin, TX | 4.1 mi |
78750 | Austin, TX | 5.0 mi |
78729 | Austin, TX | 5.1 mi |
78646 | Leander, TX | 5.3 mi |
78726 | Austin, TX | 5.4 mi |
78681 | Round Rock, TX | 6.6 mi |
78641 | Leander, TX | 6.6 mi |
78759 | Austin, TX | 8.0 mi |
78727 | Austin, TX | 8.1 mi |
Find every ZIP code within 10 miles of 78613 →
Questions about this ZIP code
Where is ZIP code 78613?
78613 is in Cedar Park, Texas, in Williamson County, part of the Austin-Round Rock-San Marcos, TX metropolitan area. Its published point location is 30.5071, -97.8195.
What county is 78613 in?
78613 spans 2 counties: Williamson County and Travis County. Most of it falls in Williamson County, measured by overlapping land area — the county holding the most land in a ZIP code is not always the one holding the most residents.
What area code is 78613?
Cedar Park uses area codes 512 and 737, from NANPA's telephone records.
What time zone is 78613 in?
78613 uses America/Chicago.
How many people live in 78613?
About 89,956 people live in ZIP code 78613, in 33,919 households, at 3,248.1 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 78613?
$125,487 a year, against $78,476 across Texas.
What ZIP codes are near 78613?
The closest are 78630 (0.1 mi), 78717 (4.1 mi), 78750 (5 mi), 78729 (5.1 mi) and 78646 (5.3 mi).
Is 78613 a PO Box ZIP code?
78613 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “78613 ZIP Code — Cedar Park, Texas (Williamson County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/78613
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/78613.json Underlying data is public domain or openly licensed — sources, vintages and licences.