The U.S. currently has 13 statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated three combined statistical areas, six metropolitan statistical areas, and four micropolitan statistical areas in Maryland. As of 2023, the largest of these is the Washington-Baltimore-Arlington, DC-MD-VA-WV-PA CSA, comprising Washington, D.C. and its suburbs as well as Maryland's largest city of Baltimore and its capital, Annapolis.

+The 13 United States statistical areas and 24 counties of the State of MarylandCombined statistical area2025 population (est.)Core-based statistical area2025 population (est.)County2025 population (est.)Metropolitan division2025 population (est.)Washington-Baltimore-Arlington, DC-MD-VA-WV-PA CSA10,274,8945,822,986 ()Washington-Arlington-Alexandria, DC-VA-MD-WV MSA6,465,7242,524,432 (MD)Fairfax County, Virginia1,167,873Arlington-Alexandria-Reston, VA-WV MD3,247,647Prince William County, Virginia502,966Loudoun County, Virginia449,749Arlington County, Virginia243,931Stafford County, Virginia170,803City of Alexandria, Virginia160,662Spotsylvania County, Virginia155,388Fauquier County, Virginia76,503Jefferson County, West Virginia63,102Culpeper County, Virginia57,666City of Manassas, Virginia44,332Warren County, Virginia42,740City of Fredericksburg, Virginia30,393City of Fairfax, Virginia26,772City of Manassas Park, Virginia16,560Clarke County, Virginia15,609City of Falls Church, Virginia15,159Rappahannock County, Virginia7,439Prince George's County, Maryland970,374Washington, DC-MD MD1,840,6121,146,967 (MD)District of Columbia693,645Charles County, Maryland176,593Montgomery County, Maryland1,074,582Frederick-Gaithersburg-Bethesda, MD MD1,377,465Frederick County, Maryland302,883Baltimore-Columbia-Towson, MD MSA2,857,781Baltimore County, Maryland847,650noneAnne Arundel County, Maryland603,380Baltimore City, Maryland569,997Howard County, Maryland339,183Harford County, Maryland266,446Carroll County, Maryland176,677Queen Anne's County, Maryland54,448Hagerstown-Martinsburg, MD-WV MSA315,280157,731 (MD)Washington County, Maryland157,731Berkeley County, West Virginia139,522Morgan County, West Virginia18,027Lexington Park, MD MSA211,176St. Mary's County, Maryland116,692Calvert County, Maryland94,484Chambersburg-Waynesboro, PA MSA160,652Franklin County, Pennsylvania160,652Winchester, VA-WV MSA152,332Frederick County, Virginia99,955City of Winchester, Virginia28,272Hampshire County, West Virginia24,105Lake of the Woods, VA μSA40,083Orange County, Virginia40,083Easton, MD μSA38,238Talbot County, Maryland38,238Cambridge, MD μSA33,628Dorchester County, Maryland33,628Salisbury-Ocean Pines, MD CSA183,881Salisbury, MD MSA131,872Wicomico County, Maryland106,899Somerset County, Maryland24,973Ocean Pines, MD μSA54,459Worcester County, Maryland54,459Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA7,493,171107,131 (MD)Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA6,329,118107,131 (MD)Philadelphia County, Pennsylvania1,574,281Philadelphia, PA MD2,155,218Delaware County, Pennsylvania580,937Montgomery County, Pennsylvania877,643Montgomery County-Bucks County-Chester County, PA MD2,082,587Bucks County, Pennsylvania647,828Chester County, Pennsylvania557,116Camden County, New Jersey535,799Camden, NJ MD1,329,876Burlington County, New Jersey481,439Gloucester County, New Jersey312,638New Castle County, Delaware588,026Wilmington, DE-MD-NJ MD782,812107,131 (MD)Cecil County, Maryland107,131Salem County, New Jersey66,280Reading, PA MSA440,072Berks County, Pennsylvania440,072noneAtlantic City-Hammonton, NJ MSA372,047Atlantic County, New Jersey278,657Cape May County, New Jersey93,390Dover, DE MSA194,786Kent County, Delaware194,786Vineland, NJ MSA157,148Cumberland County, New Jersey157,148noneCumberland, MD-WV μSA93,64066,848 (MD)Allegany County, Maryland66,848Mineral County, West Virginia26,792noneCaroline County, Maryland34,116Garrett County, Maryland28,370Kent County, Maryland19,565State of Maryland6,265,347

+The 10 core-based statistical areas of the State of Maryland2025 rankCore-based statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusBaltimore-Columbia-Towson, MD MSAWashington-Arlington-Alexandria, DC-VA-MD-WV MSA (MD)Lexington Park, MD MSAHagerstown-Martinsburg, MD-WV MSA (MD)Salisbury, MD MSAPhiladelphia-Camden-Wilmington, PA-NJ-DE-MD MSA (MD)Cumberland, MD-WV μSA (MD)Ocean Pines, MD μSAEaston, MD μSACambridge, MD μSACumberland, MD-WV μSAHagerstown-Martinsburg, MD-WV MSAPhiladelphia–Camden–Wilmington, PA-NJ-DE-MD MSAWashington–Arlington–Alexandria, DC-VA-MD-WV MSA

+The three combined statistical areas of the State of Maryland2025 rankCombined statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusWashington-Baltimore-Arlington, DC-MD-VA-WV-PA CSA (MD)Salisbury-Ocean Pines, MD CSAPhiladelphia-Reading-Camden, PA-NJ-DE-MD CSA (MD)Philadelphia-Reading-Camden, PA-NJ-DE-MD CSAWashington-Baltimore-Arlington, DC-MD-VA-WV-PA CSA

See also

Geography of Maryland Demographics of Maryland List of Maryland locations by per capita income

Notes

References

External links

Office of Management and Budget United States Census Bureau