ZIP 78664
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Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).
12-month history
Last updated: October 17, 2026
What the numbers show
February. Asking rents in ZIP 78664 usually run 0.6% below trend in February and 0.8% above it in July, about $23 a month apart at today's median. Based on 11 years of data.
Rent in ZIP 78664 is 5.8% below its high of $1,744 in January 2024, at $1,643 as of September 2026.
Rent in ZIP 78664 changed +3.2% over the year to September 2026. Across the 629 Texas ZIP codes Zillow tracks, the typical change was +1.2%.
From 2019 to 2024, rent in ZIP 78664 rose 32.8% while median household income rose 15.4% ($75,766 to $87,417). Rent outpaced income.
Rent in ZIP 78664 is 26.7% higher than in March 2020. Across the US, rent is up 37.3% over the same stretch.
Rent has risen 4 months in a row, and rose in 7 of the last 12 months.
30% of the median household income ($87,417) is $2,185 a month. That covers HUD's Fair Market Rent for up to a 2-bedroom ($1,790); a 3-bedroom is $2,270.
1st cheapest of 3 ZIP codes in Round Rock.
ZIP 78728, 4 miles away, rents for 22% less ($1,279/mo), about $4,400 a year in savings.
From Zillow's monthly rent index (ZORI) for ZIP 78664. The seasonal pattern compares Zillow’s seasonally adjusted and unadjusted series. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.
Who lives here
ZIP 78664 (Round Rock, TX) is roughly split between renters and owners, 36.4% of residents hold a bachelor's degree or higher.
Source: U.S. Census Bureau · ACS 2024 5-Year Estimates
How ZIP 78664 in Round Rock, TX has changed in 5 years
Five years ago, renters in ZIP 78664 in Round Rock, TX paid around $1,369 a month. That figure now sits near $1,643, up 20.0% from the 2021 baseline. Local incomes tracked alongside that move, going from a median of $80,403 in 2021 to $87,417 more recently. Because rent grew faster than wages over the same span, the affordability picture has tightened relative to 2021. Census counts show ZIP 78664 in Round Rock, TX adding about 1,908 residents over the five-year window, up 3.2% on net. Bachelor's-degree-or-higher attainment moved from 32.4% to 36.4% across the same window. These shifts give renters and would-be renters a longer baseline for sizing up today's listings against the ZIP 78664 in Round Rock, TX market of 2021.
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Tips for renters in ZIP 78664
Last updated: October 17, 2026
ZIP code 78664 covers Round Rock, TX. The median rent here is $1,643/mo as of October 2026. A 1-bedroom rents for a median of $1,510/mo. A 2-bedroom rents for a median of $1,790/mo.
At 23% of local median household income ($87,417/yr), ZIP 78664 ranks as affordable compared to the national benchmark of 30%. Rents have increased 3.2% over the past year.
Frequently asked questions
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How does ZIP 78664 compare to other ZIPs in Texas?
How does ZIP 78664 compare to the rest of Round Rock?
At $1,643/mo, rent takes ~23% of ZIP 78664's median household income ($87,417/yr). The standard benchmark is 30%.
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