ZIP 78664

Old Round Rock, TX

Data based on listings and public records observed by Rufus. May not represent the entire market.

ZIP 78664 covers 22 tracked apartment buildings totaling 5,367 units in Old Round Rock, TX, with an average asking rent of $1,386 — close to the national median for this ZIP code. Asking rents span $727 to $2,395 across the available inventory. Occupancy of 92.7% is in line with a healthy stabilized market.

The for-sale market in this ZIP code shows a median asking price of $360,000 ($147 per square foot). For-sale listings sit on the market for an average of 23 days. As of the most recent snapshot Rufus is tracking 1 active listings. HMDA mortgage data for the county covering Old Round Rock shows an average loan amount of $403,790 at an average interest rate of 6.26%. 37,449 loans were originated in the most recent reporting year, a denial rate close to the national average.

Rufus refreshes this ZIP code snapshot from live scraping of listing sources and public deed and mortgage records; figures are observed rather than reported by owners and may differ from marketing brochures.

Last updated 2026-07-27 · Tracked since 2025-09-05
Avg Rent
$1,386
$727 – $2,395
Buildings
22
Total Units
5,367
Est. Occupancy
92.7%
394 vacant (observed)

Building Vintage

Pre-1980
1
1980-1999
10
2000-2014
6
2015+
5

Largest Buildings

PropertyUnitsBuiltAvg Rent
Townhomes at Double CreekN/A1999$1,558
MAA Round Rock4222005$1,545
MAA Ashton Oaks3622009$1,221
Lantower Round Rock3582000$1,494
Dalton Austin Residences3502021$1,458
The Dalton3502021$1,419
Hollybrook Ranch3362022$1,391
The Warner3362022$1,600
Falls Round Rock3241995$1,441
Regency Dell Ranch Apartments2562001$1,386
Last updated: 2026-07-20
Median Asking Price
$360,000
Median Size
2,456 sqft
Price per Sqft
$147
Avg Days on Market
23 days
Active Listings
1

Home Type Breakdown

Single Family100%(1)
Source: HMDA / CFPB

Mortgage data is reported at the county level and may cover a broader area than the ZIP, city, or metro shown.

Avg Loan Amount
$403,790
Avg Property Value
$510,912
Avg Applicant Income
$176,565
Denial Rate
9.7%
Avg Interest Rate
6.26%
Originations
37,449

Loan Type Breakdown

Conventional71.1%
FHA18.8%
VA9.4%
USDA0.7%