Montgomery County is the most populous county in the U.S. state of Maryland. As of the 2020 census, the county's population was 1,062,061, increasing by 9.3% from 2010.
The average household income in Montgomery County is among the highest in the United States.
According to the U.S. Census Bureau, the county has a total area of 507 square miles, of which 491 square miles is land and 16 square miles is water.
