
King William
- County:
- King William County
- County Seat:
- Yes
- Area (mi²):
- 4.613
- State:
- Virginia
King William is a CDP located in King William County, Virginia. King William has a 2025 population of 131. It is also the county seat of .King William is currently declining at a rate of -5.76% annually and its population has decreased by -58.28% since the most recent census, which recorded a population of 314 in 2020.
The average household income in King William is $63,173 with a poverty rate of 43.71%. The median age in King William is 39.3 years: 39.2 years for males, and 39.5 years for females.