Montgomery County Planning Department

Population of Montgomery County Region Jurisdictions
 
Jurisdictions
 1950 1960 1970 1980 1990 2000
 
Anne Arundel County, MD 117,392 206,634 297,539 370,775 427,239 489,656
Frederick County, MD 62,287 71,930 84,927 114,792 150,208 195,277
Howard County 23,119 36,152 61,911 118,572 187,328 247,842
Montgomery County, MD 164,401 340,928 522,809 579,053 757,027 873,341
Prince George's County, MD 194,182 357,395 660,567 665,071 729,268 801,515
Arlington County, VA 135,449 163,401 174,284 152,599 170,897 189,453
Fairfax County, VA 98,557 275,002 455,021 596,901 818,358 969,749
Loudoun County, VA 21,147 24,549 37,150 57,427 86,129 169,599
Prince William County, VA 22,612 50,164 111,102 144,703 215,677 280,813
City of Alexandria , VA 61,787 91,023 110,938 103,217 111,182 128,283
District of Columbia 802,178 763,956 756,510 638,333 606,900 572,069
 
Source: U.S. Bureau of the Census PL94-171; Montgomery County Dept. of Park and Planning, Research and Technology Center.