The typical owner-occupied home in Williamson County is worth about $447,000, 58% above the Texas median of $283,800 and 34% above the national median of $332,700. Owners pay a median $7,205 a year in property taxes, about 1.61% of their home's value, higher than the Texas rate of 1.49%. The median household earns $111,340 a year, so the median home costs 4.0 times the median income (3.6 times for Texas). 66% of occupied homes here are lived in by their owners, and 70% of those owners still have a mortgage.
Williamson County at a glance
| Williamson County | Texas | U.S. | |
|---|---|---|---|
| Median home value | $447,000 | $283,800 | $332,700 |
| Median property tax paid per year | $7,205 | $4,232 | $3,119 |
| Property tax as a share of value | 1.61% | 1.49% | 0.94% |
| Median household income | $111,340 | $78,476 | $80,734 |
| Homes lived in by their owners | 66% | 63% | 65% |
| Owner homes with a mortgage | 70% | 56% | 61% |
| Median monthly costs, owners with a mortgage | $2,453 | $2,106 | $1,963 |
| Those costs as a share of the owners' income | 20.9% | 21.7% | 21.0% |
| Median rent | $1,796 | $1,403 | $1,413 |
| Rent as a share of renters' income | 29.2% | 30.9% | 30.6% |
| Median year homes were built | 2006 | 1992 | 1980 |
| Vacant homes | 3.9% | 9.4% | 10.1% |
| Population | 672,688 | 30,188,424 | 334,922,499 |
What a typical home costs per month in Williamson County
At this week's average 30-year rate of 7.11%, buying the median Williamson County home of $447,000 with 20% down costs about $3,192 a month, including property taxes and insurance. With an FHA loan and 3.5% down, it's about $3,936, because the loan is bigger and FHA adds mortgage insurance.
Lenders usually want housing costs under about 28% of gross income, which means an income of roughly $136,782 for the 20%-down payment. That payment is 34% of the median Williamson County household income of $111,340; at that income and 20% down, the 28% guideline points to a home of about $364,000.
The median rent here is $1,796 a month, so owning the median home costs about $1,396 a month more than renting, before you count the equity you build and any tax benefits.
| Down payment | $89,400 |
|---|---|
| Loan amount | $357,600 |
| Principal and interest | $2,406 |
| Property taxes (1.61% a year) | $600 |
| Homeowners insurance (our estimate, 0.5% a year) | $186 |
| PMI | $0 |
| Total per month | $3,192 |
Change the numbers in the calculator
| Down payment | $15,645 |
|---|---|
| Loan amount | $438,904 |
| Principal and interest | $2,953 |
| Property taxes (1.61% a year) | $600 |
| Homeowners insurance (our estimate, 0.5% a year) | $186 |
| FHA mortgage insurance | $198 |
| Total per month | $3,936 |
Change the numbers in the calculator
Questions about home buying in Williamson County
What is the median home value in Williamson County?
About $447,000 for owner-occupied homes, according to the Census Bureau's 2020–2024 American Community Survey.
How much are property taxes in Williamson County?
Homeowners pay a median $7,205 a year, which is about 1.61% of the median home value. Your bill depends on your home's assessed value and local rates.
What income do you need to buy a home in Williamson County?
For the median home with 20% down at 7.11%, the payment is about $3,192 a month. Keeping that under 28% of gross income takes about $136,782 a year.
More about Williamson County
- Mortgage Refinance in Williamson County
- Debt Relief in Williamson County
- Home Equity Loans in Williamson County
- Guides and quotes for mortgage refinance on our sister site, MortgageRefinance.com
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates; Freddie Mac Primary Mortgage Market Survey, week of November 12, 2026. Estimates for small places have wide margins of error. About our data