Grantsville is a city located in Maryland. With a 2020 population of 862, it is the 104th largest city in Maryland and the 10948th largest city in the United States. Grantsville is currently declining at a rate of -0.35% annually but its population has increased by 12.53% since the most recent census, which recorded a population of 766 in 2010. Grantsville reached it's highest population of 891 in 2010. Spanning over 1 miles, Grantsville has a population density of 831 people per square mile.
The average household income in Grantsville is $45,808 with a poverty rate of 15.93%. The median rental costs in recent years comes to $508 per month, and the median house value is $141,300. The median age in Grantsville is 60 years, 56.4 years for males, and 61.7 years for females. For every 100 females there are 76.1 males.