The U.S. currently has four statistical areas that have been delineated by the Office of Management and Budget (OMB). On July 21, 2023, the OMB delineated one combined statistical area, two metropolitan statistical areas, and one micropolitan statistical area in Delaware. As of 2023, the largest statistical area in the state is the Philadelphia-Reading-Camden, PA-NJ-DE-MD Combined Statistical Area, which includes Delaware's largest city, Wilmington.

+The four United States statistical areas and three counties of the State of DelawareCombined statistical area2025 population (est.)Core-based statistical area2025 population (est.)County2025 population (est.)Metropolitan division2025 population (est.)Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA7,493,171782,812 ()Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA6,329,118588,026 (DE)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 MD782,812588,026 (DE)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 Jersey157,148noneSeaford, DE μSA277,140Sussex County, Delaware277,140State of Delaware1,059,952

+The three core-based statistical areas of the State of Delaware2025 rankCore-based statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusPhiladelphia-Camden-Wilmington, PA-NJ-DE-MD MSA (DE)Seaford, DE μSADover, DE MSAPhiladelphia-Camden-Wilmington, PA-NJ-DE-MD MSA

+The one combined statistical area of the State of Delaware2025 rankCombined statistical areaPopulation2025 estimateChange2020 CensusChange2010 CensusPhiladelphia-Reading-Camden, PA-NJ-DE-MD CSA (DE)Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA

See also

Geography of Delaware Demographics of Delaware

Notes

References

External links

Office of Management and Budget United States Census Bureau