Rockville, Maryland

Rockville population, 2020 to 2024

Rockville added 1,080 residents from July 2020 to July 2024, a change of +1.6%. In the latest year it moved by +451. Among 46 Maryland places of 5,000 or more, that growth ranks 21st; the median place changed by +1.3%. The median place of 5,000+ in Maryland has 10,155 people, so Rockville is 6.7 times that size.

Rockville covers 13.57 square miles of land and 0.04 of water, for 5,042 people per square mile of land. The median Maryland place of 5,000+ has 2,607, so Rockville is denser than the typical town.

What county Rockville is in

All of Rockville's residents live in Montgomery County, which had 1,082,273 residents in 2024. Rockville holds 6.3% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Rockville

3 ZIP Code Tabulation Areas (ZCTAs) overlap Rockville by at least 10% of the ZCTA's or the city's land: 20850, 20851, 20852. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Rockville is

The Census internal point of Rockville is at 39.083700, -77.155600. Annapolis, the capital, is 36.4 miles ESE in a straight line. The nearest larger place is Gaithersburg, MD (70,686 people), 5.0 miles away. The nearest city of 100,000 or more is Washington, DC, 14.5 miles away.

Daylight in Rockville

At 39.08° N, Rockville gets about 14 h 55 min of daylight around the June solstice and 9 h 25 min around the December solstice, a swing of 5 h 30 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Rockville

The eight nearest incorporated places of 1,000+ in Maryland, measured between internal points. The closest is Garrett Park, 4.7 miles away, with 1,004 people.