Washington Metropolitan Area Jurisdictions Number of Workers Residing and Working in the Same Jurisdiction, 1990 and 2000
Jurisdiction	1990	2000
District of Columbia	190,566	260,884
Anne Arundel County, MD	144,033	255,858
Frederick County, MD	60,272	102,318
Montgomery County, MD	267,128	455,331
Alexandria city, VA	19,473	77,190
Arlington County, VA	34,379	116,046
Fairfax County, VA	278,064	527,464
Loudoun County, VA	38,321	92,315
Prince George's County,MD	155,671	397,403
Prince William County, VA	50,435	150,526
Source: U.S. Bureau of the Census; Montgomery County Department of Park and Planning, Research & Technology Center.