 25.5 percent of residents were under the age of 18, while 14.2 percent were 65 years of age or older.The gender makeup of the city was 48.1 percent male and 51.9 percent female.The racial makeup of North Potomac was 51.6 percent White alone, 35.8 percent Asian alone, 7.3 percent Black or African American alone, and a 5 percent total for all other categories.