HousingHandbookReference data

U.S. ZIP Code · TX78655

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

Typical home value

$335,994[1]

Zillow Home Value Index, as of April 2026

Appreciation

1-year
-1.3%
5-year / yr
+3.5%
10-year / yr
+5.9%

Relative price

vs U.S.
+18.3%
vs metro
-23.6%
vs state
+28.4%
ZIP 78655 location in TX
Location of ZIP 78655 in TX

Price history

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

The typical home in 78655 is worth $335,994 — 23.6% below the Austin-Round Rock-San Marcos, TX median. Over the past year, values have fallen 1.3%. The effective property tax rate is 1.2%.

#Rent & investment

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

Monthly rent
[2]
Gross yield
[2]
Cap rate
[2]

#Property tax

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

Effective tax rate
1.2%[3]
Typical annual tax
$4,124[3]

#Climate risk

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

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

#Who lives here

Population
3,730[3]
Median household income
$55,952[3]

#Migration

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

Net migration
+687[5]
Moved in
2,099
Moved out
1,412

Run the numbers

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

Gross yield
Net yield (after ~40% expenses)
Annual rent

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.

Monthly payment$1,699
Loan principal$268,795
Down payment$67,199
Total interest paid$342,833

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.

Own : rent ratio
Monthly cost to own$2,323
Monthly rent

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
88th percentile[1]
Rental yield
[2]
Property tax
36th percentile[3]

Frequently asked

How much is a home worth in ZIP code 78655?
The typical home in 78655 is worth $335,994, based on the Zillow Home Value Index.
Are home values rising in 78655?
Home values in 78655 are down 1.3% over the past year, and up 3.5% a year over five years.
What is the property tax rate in 78655?
The effective property tax rate in 78655 is 1.2% — roughly $4,124 a year on a typical home.
Who lives in 78655?
ZIP code 78655 has a population of 3,730 and a median household income of $55,952.

#Comparable ZIPs

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

  • Austin, TX

    Typical home
    $336,342
    Gross yield
    6.1%
  • Austin, TX

    Typical home
    $334,234
    Gross yield
    5.4%
  • Austin, TX

    Typical home
    $332,462
    Gross yield
    5.0%
  • Hutto, TX

    Typical home
    $340,450
    Gross yield
    6.1%
  • Austin, TX

    Typical home
    $344,231
    Gross yield
    4.5%
  • Round Rock, TX

    Typical home
    $344,736
    Gross yield
    5.5%

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