How much is a home worth in ZIP code 78642?

The typical home in 78642 is worth $502,414, based on the Zillow Home Value Index.

Are home values rising in 78642?

Home values in 78642 are down 6.7% over the past year, and up 2.2% a year over five years.

What is the typical rent in 78642?

A typical home in 78642 rents for about $2,215 a month, a gross rental yield of 5.3%.

What is the property tax rate in 78642?

The effective property tax rate in 78642 is 1.4% — roughly $7,210 a year on a typical home.

ZIP code 78642 has a population of 26,434 and a median household income of $132,958.

HousingHandbookReference data

…

U.S. ZIP Code · TX78642

Williamson County · Austin-Round Rock-San Marcos, TX

Typical home value

$502,414^[1]

Zillow Home Value Index, as of April 2026

Appreciation

1-year: -6.7%
5-year / yr: +2.2%
10-year / yr: +4.9%

Relative price

vs U.S.: +76.9%
vs metro: +14.3%
vs state: +91.9%

Price history

Zillow Home Value Index — monthly, smoothed and seasonally adjusted.

The typical home in 78642 is worth $502,414 — 14.3% above the Austin-Round Rock-San Marcos, TX median. Over the past year, values have fallen 6.7%. Homes here rent for a typical $2,215 a month — a 5.3% gross rental yield. The effective property tax rate is 1.4%.

#Rent & investment

Typical asking rent, and the returns it implies at the current home value.

Monthly rent: $2,215^[2]
Gross yield: 5.3%^[2]
Cap rate: 3.2%^[2]

#Property tax

Effective rate — total real estate taxes paid relative to total home value.

Effective tax rate: 1.4%^[3]
Typical annual tax: $7,210^[3]

#Climate risk

FEMA National Risk Index ratings for Williamson County. "Not Applicable" means the hazard does not threaten the county.

Overall risk: Relatively Moderate^[4]
Riverine flood: Relatively Moderate
Coastal flood: Not Applicable
Wildfire: Relatively Low
Drought: Relatively Moderate
Heat wave: Relatively Moderate
Hurricane: Relatively Low
Tornado: Relatively High
Earthquake: Very Low
Winter weather: Very High

#Who lives here

Population: 26,434^[3]
Median household income: $132,958^[3]

#Migration

Household moves in and out of Williamson County over a year, from IRS tax-return data.

Net migration: +7,478^[5]
Moved in: 32,697
Moved out: 25,219

Schools

Open public schools in this ZIP, from the NCES Common Core of Data.

Public schools: 8
Elementary: 4
Middle: 2
High: 1

LIBERTY HILL H S
High · Grades 9–12 · LIBERTY HILL ISD
2,213 students
SANTA RITA EL
Elementary · Grades PK–5 · LIBERTY HILL ISD
1,027 students
SANTA RITA MIDDLE
Middle · Grades 6–8 · LIBERTY HILL ISD
1,023 students
LIBERTY HILL MIDDLE
Middle · Grades 6–8 · LIBERTY HILL ISD
976 students
BILL BURDEN EL
Elementary · Grades PK–5 · LIBERTY HILL ISD
792 students

Run the numbers

Interactive calculators pre-filled with this ZIP's typical home value, rent, and property-tax rate. Edit any field to recompute.

Home value$Monthly rent$

Gross yield5.3%

Net yield (after ~40% expenses)3.2%

Annual rent$26,583

Gross and net yield are estimates based on the inputs and the selected expense ratio. Actual income and expenses will vary by property and market. Not investment advice.

Home price$Down payment%Interest rate%Loan termyears

Monthly payment$2,540

Loan principal$401,931

Down payment$100,483

Total interest paid$512,641

Estimated monthly payments include principal and interest only. Actual costs will include property tax, insurance, possibly PMI, and HOA fees not modeled here. Loan terms shown are estimates; consult a licensed lender for current rates and qualification.

Home price$Monthly rent$Down payment%Mortgage rate%Property tax rate% / yrMaintenance% / yrRule of thumb: 1% of home value per year.

Own : rent ratio1.61

Monthly cost to own$3,562

Monthly rent$2,215

Renting is meaningfully cheaper month-to-month.

This calculator projects multi-year scenarios based on assumptions about appreciation, rent growth, and investment returns — none of which are guaranteed. Actual outcomes depend on variables this tool cannot know. Not financial or real estate advice.

#Metro ranking

Where this ZIP sits among others in its metro area.

Appreciation: 66th percentile^[1]
Rental yield: 70th percentile^[2]
Property tax: 79th percentile^[3]

Frequently asked

How much is a home worth in ZIP code 78642?: The typical home in 78642 is worth $502,414, based on the Zillow Home Value Index.
Are home values rising in 78642?: Home values in 78642 are down 6.7% over the past year, and up 2.2% a year over five years.
What is the typical rent in 78642?: A typical home in 78642 rents for about $2,215 a month, a gross rental yield of 5.3%.
What is the property tax rate in 78642?: The effective property tax rate in 78642 is 1.4% — roughly $7,210 a year on a typical home.
Who lives in 78642?: ZIP code 78642 has a population of 26,434 and a median household income of $132,958.

#Comparable ZIPs

Same metro, nearest typical home value. Each card shows the comparable ZIP's headline numbers so you can scan at a glance.

78681 vs 78642 →
Round Rock, TX
Typical home
$491,286
Gross yield
4.4%
78723 vs 78642 →
Austin, TX
Typical home
$483,808
Gross yield
4.5%
78628
Georgetown, TX
Typical home
$480,872
Gross yield
4.7%
78652
Austin, TX
Typical home
$473,308
Gross yield
5.3%
78613
Cedar Park, TX
Typical home
$469,580
Gross yield
3.9%
78650
McDade CDP, TX
Typical home
$469,067
Gross yield
—

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#Jump to section

U.S. ZIP Code · TX78642

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