Williamson County, TX Average Home Price (2026)
The average home price in Williamson County, Texas is about $420,000 (the 2026 median across 17 ZIP codes, at ~$206/sq ft) — 61% more expensive than the Texas median and 45% more expensive than the typical U.S. home.
How Williamson County compares
Williamson County is relatively expensive for housing nationally: its typical home costs $420,000 against $261,000 for Texas and $289,000 for the U.S. Within the county, ZIP-level values run from about $251,000 to $548,000.
| Area | Typical value | $ / sq ft |
|---|---|---|
| Williamson County | $420,000 | $206 |
| Texas | $261,000 | $171 |
| United States | $289,000 | $193 |
Cities in Williamson County
Cities with their own home-value page, largest first:
Williamson County home prices by ZIP code
The 15 most valuable ZIP codes in Williamson County (of 17 with data):
| ZIP code | Typical value | $ / sq ft | vs county |
|---|---|---|---|
| 78717 Austin | $548,000 | $231 | +30% |
| 76527 Florence | $530,000 | $258 | +26% |
| 78615 Coupland | $528,000 | $375 | +26% |
| 78642 Liberty Hill | $486,000 | $200 | +16% |
| 78681 Round Rock | $473,000 | $214 | +13% |
| 78628 Georgetown | $469,000 | $206 | +12% |
| 78613 Cedar Park | $452,000 | $213 | +8% |
| 78633 Georgetown | $436,000 | $206 | +4% |
| 78729 Austin | $420,000 | $236 | +0% |
| 78665 Round Rock | $390,000 | $187 | -7% |
| 76578 Thrall | $363,000 | $239 | -14% |
| 78626 Georgetown | $344,000 | $191 | -18% |
| 78634 Hutto | $328,000 | $172 | -22% |
| 78664 Round Rock | $328,000 | $196 | -22% |
| 76530 Granger | $311,000 | $281 | -26% |
Home value appreciation in Williamson County
Home prices in Williamson County have risen about 100% over the last 10 years (≈7.2% a year) and +190.3% over 20 years, according to the FHFA house price index through 2025. The most recent year came in at -1.0% — a recent dip. A home worth $420,000 today was worth roughly $210,210 ten years ago.
See where that trend takes a specific home with the home appreciation calculator — statewide, Texas is +88.2% over the same 10 years. Past appreciation is a track record, not a forecast; local prices can fall.
Calculators for Williamson County
Run the numbers for Williamson County with the local rates already filled in — change any input to test your own situation.
Salary needed to buy a home in Williamson County
To buy the typical $420,000 home in Williamson County with 20% down, you need a household income of roughly $114,000 a year (about $2,670 a month for the mortgage, taxes, and insurance). With 10% down the bar rises to about $136,000, because the loan is bigger and mortgage insurance kicks in.
| Down payment | Cash down | Monthly payment | Income needed |
|---|---|---|---|
| 5% (+PMI) | $21,000 | $3,310/mo | $142,000/yr |
| 10% (+PMI) | $42,000 | $3,170/mo | $136,000/yr |
| 20% | $84,000 | $2,670/mo | $114,000/yr |
Assumes a 30-year fixed mortgage at 6.5%, property tax at 1.1% and insurance at 0.45% of value per year, PMI of 0.75% on loans with less than 20% down, and the standard 28% housing-to-income rule. Your rate, taxes, and HOA will move these — run your own numbers in the mortgage calculator.
What your budget buys in Williamson County
At about $206 per square foot, here is roughly how much home different budgets get you in Williamson County:
| Budget | Approx. size | What that looks like locally |
|---|---|---|
| $200k | 970 sq ft | below the local median — condos, smaller or older homes |
| $250k | 1210 sq ft | below the local median — condos, smaller or older homes |
| $300k | 1460 sq ft | below the local median — condos, smaller or older homes |
| $400k | 1940 sq ft | around the typical home here |
| $500k | 2430 sq ft | around the typical home here |
Wondering where that budget goes further? The relocation calculator ranks hundreds of U.S. cities by what the same money buys — it opens filtered to Texas.
Estimate a specific home in Williamson County
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Williamson County home prices: frequently asked
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Browse all Texas cities and counties, or look up price per square foot by ZIP code nationwide.
Directional estimates from public market data (Realtor.com & Zillow research; FHFA house price index; Census ZIP-to-county relationships), not appraisals.