Montgomery County, Maryland

Montgomery County, Maryland
County
Clockwise: Downtown Bethesda, Spring Street in Silver Spring, Billy Goat B Trail, rural Darnestown, Rockville town center, Great Falls on the Potomac River.
Flag Seal Coat of arms
Nickname:  "MoCo"
Motto:  French: Gardez Bien (English: Watch Well)
Location in the U.S. state of Maryland
Coordinates: 39°08′11″N 77°12′15″W / 39.13638°N 77.20424°W / 39.13638; -77.20424[1]
Country	United States
State	Maryland
Seat	Rockville
Largest community	Germantown
Founded	September 6, 1776[2][3]
Named for	Richard Montgomery
Government
• Executive	Marc Elrich (D)
Area
• Total	506.91 sq mi (1,312.89 km2)
• Land	493.11 sq mi (1,277.15 km2)
• Water	13.80 sq mi (35.74 km2)
Population  (2020)
• Total	1,062,061
• Density	2,153.80/sq mi (831.59/km2)
Demonyms	Montgomery Countyan, MoCoite
Gross Domestic Product [4]
• Total	US$93.746 billion (2022)
Time zone	UTC−05:00 (Eastern [EST])
• Summer (DST)	UTC−04:00 (EDT)
ZIP Codes	20812–20918
Area codes	301 240
Congressional districts	4th, 6th, 8th
Website	www.montgomerycountymd.gov

Montgomery County of the U.S. state of Maryland is north of Washington, D.C. and southwest of Baltimore. It is one of the richest counties in the United States,^[5] and has one of the highest percentages (32.8%) of residents over 25 years old who hold a post-graduate degree.^[6] The county seat and largest municipality is Rockville.^[7]

1. ↑ "Montgomery County". GeoNames.org. Retrieved December 5, 2019.
2. ↑ "Montgomery County Centennial: An Old-Fashioned Maryland Reunion". The Baltimore Sun. September 7, 1876. p. 1. ProQuest 534282014.
3. ↑ Maryland. Convention (1836). Proceedings of the Conventions of the providence of Maryland, held at the city of Annapolis, in 1774, 1775, & 1776. Baltimore, Md.; Annapolis, Md.: Baltimore, James Lucas & E. K. Deaver; Annapolis, Jonas Green. p. 242. hdl:loc.gdc/scd0001.00117695347. LCCN 10012042. OCLC 3425542. OL 7018977M. Resolved, That after the first day of October next, such part of the said county of Frederick as is contained within the bounds and limits following, to wit : beginning at the east side of the mouth of Rock creek on Potowmac river, and running with the said river to the mouth of Monocacy, then with a straight line to Par's spring, from thence with the lines of the county to the beginning, shall be and is hereby erected into a new county by the name of Montgomery county.
4. ↑ "Gross Domestic Product by County and Metropolitan Area, 2022" (PDF). www.bea.gov. Bureau of Economic Analysis.
5. ↑ https://www.washingtonpost.com/wp-dyn/content/article/2006/08/29/AR2006082901543.html
6. ↑ "What Counties in the U.S. Are the Most Educated?". January 25, 2024. Retrieved May 6, 2024.
7. ↑ "Maryland by Place - GCT-PH1-R. Population, Housing Units, Area, and Density (Geographies ranked by total population): 2000". Archived from the original on 2009-02-26. Retrieved 2009-01-02.