Cost to Own
United StatesKentuckyGrant CountyWilliamstown Population 3,929 Data vintage ACS 2023 5-Year Rates updated 2026-07-30

Total monthly cost of ownership

Cost to Own a Home in Williamstown, Kentucky

A $159,000 home here costs

$1,381

per month, all in — with 20% down at today's 6.66% 30-year fixed rate.

A standard mortgage calculator would have told you $817. The real number is $563 higher every month — 69% more than the payment most buyers budget for.

Williamstown median: $159,100
Under 20% adds PMI
Freddie Mac PMMS
US average household

Where every dollar goes

Only the first line is a mortgage payment. Change any assumption above and every figure below recalculates.

Principal & interest30-year fixed, $127,200 borrowed $817
Property tax1.091% effective rate for Williamstown itself $145
Homeowners insuranceKentucky averages $1,232/yr (NAIC), or 0.631% of home value $84
Electricity14.98¢/kWh — Kentucky residential average, EIA $135
Water, sewer & trashUS household average $68
Maintenance reserve1% of home value per year $133
Total monthly $1,381

Williamstown against Grant County and Kentucky

MeasureWilliamstownGrant County
Median home value$159,100$185,500
Median property tax$1,735$1,339
Effective tax rate1.091%0.722%
Median gross rent$770$855
Population3,92925,238

Williamstown extends across 2 counties. Figures here use Grant County, where most of its housing sits.

The weather behind that power bill

Williamstown sits in Grant County, which averages a high of 87.1°F in its hottest month and a low of 25.0°F in its coldest, with 45.86" of precipitation a year and 31% of it in a single three-month stretch. That climate drives 1,276 cooling and 4,392 heating degree days, which is what sets the $135 electricity line above.

See the full climate breakdown for Grant County — month by month temperatures, rainy season timing, snowfall and heating and cooling costs.

Other cities in Grant County

Full Grant County cost breakdown · Every county in Kentucky

Common questions

How much does it cost to own a home in Williamstown?

A $159,000 home in Williamstown, Kentucky costs approximately $1,381 per month with 20% down at 6.66%. That is $817 principal and interest, $145 property tax, $84 homeowners insurance, $203 utilities and $133 set aside for maintenance.

What is the property tax rate in Williamstown?

Williamstown has an effective property tax rate of 1.091%, based on a median home value of $159,100 and median real estate taxes of $1,735. That is higher than the Grant County average of 0.722%.

What is the average home price in Williamstown?

The median owner-occupied home value in Williamstown, Kentucky is $159,100, against $185,500 across Grant County.

Is it cheaper to rent or buy in Williamstown?

Median gross rent in Williamstown is $770 a month, against $1,381 to own the median home all in. Renting costs less month to month here, though renting builds no equity.

Sources & methodology

  • Median home value, real estate taxes, gross rent and population for Williamstown — US Census Bureau, American Community Survey ACS 2023 5-Year, place-level tables.
  • Homeowners insurance — NAIC average premium for Kentucky.
  • Electricity price — EIA Electric Power Monthly Table 5.6.A.
  • Mortgage rate — Freddie Mac PMMS, refreshed weekly.
  • Maintenance (1%/yr) and water and sewer ($68/mo) are national estimates. Every assumption above is editable.

Full methodology