Gaithersburg is a city located in Montgomery County Maryland. With a 2020 population of 67,815, it is the 4th largest city in Maryland (after Baltimore, Frederick, and Rockville) and the 550th largest city in the United States . Gaithersburg is currently declining at a rate of -0.13% annually but its population has increased by 13.15% since the most recent census, which recorded a population of 59,933 in 2010. Gaithersburg reached it's highest population of 68,070 in 2018. Spanning over 10 miles, Gaithersburg has a population density of 6,572 people per square mile.
The average household income in Gaithersburg is $118,318 with a poverty rate of 9.46%. The median rental costs in recent years comes to $1,740 per month, and the median house value is $392,200. The median age in Gaithersburg is 36.5 years, 34.7 years for males, and 38.2 years for females.