Potomac is located in Montgomery County, Maryland, United States, named for the nearby Potomac River. In 2013, CNNMoney.com listed Potomac as the most affluent town in all the United States based on median household income. Potomac is also the seventh most top-educated American small town according to Forbes. Bloomberg Businessweek labeled Potomac as the twenty-ninth richest zip code in the United States in 2011, stating that it had the largest population of any U.S. town with a median income of more than $240,000. In 2012, The Higley Elite 100 published a list of highest-income neighborhoods by mean household income, which included four neighborhoods in Potomac; one of these neighborhoods, “Carderock-The Palisades” was ranked the highest-income neighborhood in the United States, followed by “Beverly Hills-North of Sunset” in Beverly Hills, CA, and “Swinks Mill-Dominion Reserve” of Mclean, VA. More recently, two Potomac neighborhoods were ranked among the ten wealthiest neighborhoods in the country by CNBC in 2014. Many Potomac residents work in nearby Washington, D.C.

The climate in this area is characterized by hot, humid summers and generally mild to cool winters. Potomac has a humid subtropical climate.

Potomac is located in Montgomery County, Maryland, United States, named for the nearby Potomac River. In 2013, CNNMoney.com listed Potomac as the most affluent town in all the United States based on median household income. Potomac is also the seventh most top-educated American small town according to Forbes. Bloomberg Businessweek labeled Potomac as the twenty-ninth richest zip code in the United States in 2011, stating that it had the largest population of any U.S. town with a median income of more than $240,000. In 2012, The Higley Elite 100 published a list of highest-income neighborhoods by mean household income, which included four neighborhoods in Potomac; one of these neighborhoods, “Carderock-The Palisades” was ranked the highest-income neighborhood in the United States, followed by “Beverly Hills-North of Sunset” in Beverly Hills, CA, and “Swinks Mill-Dominion Reserve” of Mclean, VA.[4] More recently, two Potomac neighborhoods were ranked among the ten wealthiest neighborhoods in the country by CNBC in 2014. Many Potomac residents work in nearby Washington, D.C.

Potomac’s geographical focal point is Potomac Village, a small cluster of upscale shops and businesses at the intersection of Maryland State Highway 189 (Falls Road, which connects the Great Falls of the Potomac River in the south to Rockville in the north) and Maryland State Highway 190 (River Road, which runs from western Montgomery County into Washington, D.C.).

The climate in this area is characterized by hot, humid summers and generally mild to cool winters. Potomac has a humid subtropical climate.