In 2019, Grantsville, MD had a population of 638 people with a median age of 58 and a median household income of $35,500. Between 2018 and 2019 the population of Grantsville, MD declined from 664 to 638, a −3.92% decrease and its median household income grew from $31,111 to $35,500, a 14.1% increase.
The 5 largest ethnic groups in Grantsville, MD are White (Non-Hispanic) (95.9%), White (Hispanic) (1.41%), Two+ (Non-Hispanic) (0.94%), American Indian & Alaska Native (Non-Hispanic) (0.784%), and Asian (Non-Hispanic) (0.627%). 0% of the households in Grantsville, MD speak a non-English language at home as their primary language.
99.1% of the residents in Grantsville, MD are U.S. citizens.
In 2019, the median property value in Grantsville, MD was $148,300, and the homeownership rate was 47.6%. Most people in Grantsville, MD drove alone to work, and the average commute time was 20.3 minutes. The average car ownership in Grantsville, MD was 2 cars per household.