ZIP 78681
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12-month history
Last updated: October 17, 2026
What the numbers show
December. Asking rents in ZIP 78681 usually run 1.5% below trend in December and 1.3% above it in July, about $50 a month apart at today's median. Based on 10 years of data.
Rent in ZIP 78681 is 8.7% below its high of $1,939 in February 2023, at $1,771 as of September 2026.
Rent in ZIP 78681 changed +0.6% 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 78681 rose 28% while median household income rose 27.7% ($107,912 to $137,819). Rent outpaced income.
Rent in ZIP 78681 is 21.6% higher than in March 2020. Across the US, rent is up 37.3% over the same stretch.
Rent rose in 6 of the last 12 months.
30% of the median household income ($137,819) is $3,445 a month. That covers HUD's Fair Market Rent for up to a 4-bedroom ($3,120).
3rd cheapest of 3 ZIP codes in Round Rock.
ZIP 78729, 6 miles away, rents for 29% less ($1,266/mo), about $6,100 a year in savings.
From Zillow's monthly rent index (ZORI) for ZIP 78681. 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 78681 (Round Rock, TX) is majority owner-occupied, has a large share of families with children, has a median income above the national average, 58% of residents hold a bachelor's degree or higher.
Source: U.S. Census Bureau · ACS 2024 5-Year Estimates
How ZIP 78681 in Round Rock, TX has changed in 5 years
Rent in ZIP 78681 in Round Rock, TX has increased 14.0% since 2021, going from about $1,553 per month to roughly $1,771 today. Census figures show median household income at $137,819 today, compared with $112,020 five years earlier. Income growth outran rent by about 9.0 percentage points, easing the affordability math somewhat compared with 2021. Headcount in the area went from 57,451 to 56,691 between 2021 and 2024, a 1.3% change. Educational attainment has shifted as well, with the share of adults holding a bachelor's degree or higher climbed from 53.9% to 58%. The combined trend lines point to a market that has changed measurably from where it stood in early 2021.
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Tips for renters in ZIP 78681
Last updated: October 17, 2026
ZIP code 78681 covers Round Rock, TX. The median rent here is $1,771/mo as of October 2026. A 1-bedroom rents for a median of $1,760/mo. A 2-bedroom rents for a median of $2,090/mo.
At 15% of local median household income ($137,819/yr), ZIP 78681 ranks as affordable compared to the national benchmark of 30%. Rents have increased 0.6% over the past year.
Frequently asked questions
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How does ZIP 78681 compare to other ZIPs in Texas?
How does ZIP 78681 compare to the rest of Round Rock?
At $1,771/mo, rent takes ~15% of ZIP 78681's median household income ($137,819/yr). The standard benchmark is 30%.
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