Montgomery County, Maryland | |
---|---|
County of Montgomery[1] | |
Clockwise: Downtown Bethesda, Spring Street in Silver Spring, Billy Goat B Trail, rural Darnestown, Rockville town center, Great Falls on the Potomac River | |
Nickname: "MoCo" | |
Motto: French: Gardez Bien (English: Watch Well) | |
Coordinates: 39°08′11″N 77°12′15″W / 39.13638°N 77.20424°W[2] | |
Country | United States |
State | Maryland |
Seat | Rockville |
Largest community | Germantown |
Founded | September 6, 1776[3][4] |
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 [dubious – discuss] |
• Density | 2,153.80/sq mi (831.59/km2) |
Demonyms | Montgomery Countyan, MoCoite |
Gross Domestic Product | |
• Total | $106.7 billion (2022) |
Time zone | UTC−05:00 (Eastern [EST]) |
• Summer (DST) | UTC−04:00 (EDT) |
ZIP Codes | 20812–20918 |
Area codes | |
Congressional districts | 4th, 6th, 8th |
Website | www |
Montgomery County is the most populous county in the U.S. state of Maryland. As of the 2020 census, the county's population was 1,062,061, increasing by 9.3% from 2010.[6] The county seat is Rockville, and Germantown is the most populous place in the county.[7] The county is adjoined to Washington, D.C., the nation's capital, and is part of the Washington metropolitan area and the Washington–Baltimore combined statistical area. Most of the county's residents live in Silver Spring, Bethesda, Germantown, and the incorporated cities of Rockville and Gaithersburg.[N 1]
The average household income in Montgomery County is the 20th-highest among U.S. counties as of 2020.[8][9][10]
The county has the highest percentage (29.2%) of residents over 25 years of age who hold post-graduate degrees.[11] Like other counties in the Washington metropolitan area, the county has several U.S. government offices, scientific research and learning centers, and business campuses.[12][13]
County of Montgomery
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.
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