Olney, Maryland

Olney, Maryland
Olney, Maryland
Census-designated place
	Olney's St. John's Episcopal Church in 2013.
	Location of Olney in Maryland
	Coordinates: 39°08′11″N 77°04′17″W / 39.13639°N 77.07139°W
Country	United States
State	Maryland
County	Montgomery
Area
• Total	16.22 sq mi (42.02 km2)
• Land	16.18 sq mi (41.91 km2)
• Water	0.04 sq mi (0.11 km2)
Elevation	499 ft (152 m)
Population (2020)
• Total	35,820
• Density	2,213.57/sq mi (854.69/km2)
Time zone	UTC−5 (Eastern (EST))
• Summer (DST)	UTC−4 (EDT)
ZIP codes	20830, 20832, 20833
Area code(s)	301, 240
FIPS code	24-58900
GNIS feature ID	2389620

Olney is a census-designated place and an unincorporated area in Montgomery County, Maryland, United States. It is located in the north central part of the county, ten miles (16 km) north of Washington, D.C.

Olney was largely agricultural until the 1960s, when growth of Washington, D.C.'s suburbs led to its conversion into a mostly residential area. It has a total population of 35,820 as of the 2020 United States census.^[3]

^ "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved April 26, 2022.
^ ^a ^b U.S. Geological Survey Geographic Names Information System: Olney, Maryland
^ "QuickFacts: Olney CDP, Maryland". United States Census Bureau. Retrieved August 17, 2021.

[CenPopGazetteer2020-1] "2020 U.S. Gazetteer Files". United States Census Bureau. Retrieved April 26, 2022.

[gnis-2] U.S. Geological Survey Geographic Names Information System: Olney, Maryland

[QuickFacts-3] "QuickFacts: Olney CDP, Maryland". United States Census Bureau. Retrieved August 17, 2021.

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