King William is a city located in Virginia. King William has a 2020 population of 325. King William is currently declining at a rate of 0.00% annually and its population has increased by 28.97% since the most recent census, which recorded a population of 252 in 2010. King William reached it's highest population of 325 in 2018.
The average household income in King William is $94,883 with a poverty rate of 9.23%. The median rental costs in recent years comes to - per month, and the median house value is $196,200. The median age in King William is 35.5 years, 37.1 years for males, and 35.1 years for females. For every 100 females there are 73.8 males.