Springfield is an unincorporated community in Fairfax County, Virginia, United States and is a suburb of Washington, D.C. Within Springfield are three census-designated places (CDPs): Springfield CDP, West Springfield CDP, and North Springfield CDP, plus a substantial portion of Newington CDP. All are officially titled Springfield by the United States Postal Service.

The Springfield CDP is recognized by the U.S. Census Bureau with a population of 30,417 as of the 2000 census.

Springfield zip codes: 22009, 22015, 22150, 22151, 22152, 22153, 22156, 22158, 22159, 22160, 22161.