Rockville is a city located in Washington County Utah. With a 2020 population of 265, it is the 226th largest city in Utah and the 15754th largest city in the United States . Rockville is currently declining at a rate of -0.75% annually but its population has increased by 8.16% since the most recent census, which recorded a population of 245 in 2010. Rockville reached it's highest population of in . Spanning over 8 miles, Rockville has a population density of 31 people per square mile.
The average household income in Rockville is $52,438 with a poverty rate of 4.48%. The median rental costs in recent years comes to $840 per month, and the median house value is $383,800. The median age in Rockville is 57.9 years, 57.6 years for males, and 60.3 years for females.