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.[1] 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.__TOC__
| Combined statistical area | 2023 population (est.)[2] | Core-based statistical area | 2023 population (est.) | County | 2023 population (est.) | Metropolitan division | 2023 population (est.) |
|---|---|---|---|---|---|---|---|
| Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA | 7,390,919 768,381 | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA | 6,246,160 578,592 (DE) | Philadelphia County, Pennsylvania | 1,550,542 | Philadelphia, PA MD | 2,127,262 |
| Delaware County, Pennsylvania | 576,720 | ||||||
| Montgomery County, Pennsylvania | 868,742 | Montgomery County-Bucks County-Chester County, PA MD | 2,064,510 | ||||
| Bucks County, Pennsylvania | 645,984 | ||||||
| Chester County, Pennsylvania | 549,784 | ||||||
| Camden County, New Jersey | 527,196 | Camden, NJ MD | 1,304,786 | ||||
| Burlington County, New Jersey | 469,167 | ||||||
| Gloucester County, New Jersey | 308,423 | ||||||
| New Castle County, Delaware | 578,592 | Wilmington, DE-MD-NJ MD | 749,602 578,592 (DE) | ||||
| Cecil County, Maryland | 105,672 | ||||||
| Salem County, New Jersey | 65,338 | ||||||
| Reading, PA MSA | 432,821 | Berks County, Pennsylvania | 432,821 | none | |||
| Atlantic City-Hammonton, NJ MSA | 369,823 | Atlantic County, New Jersey | 275,213 | ||||
| Cape May County, New Jersey | 94,610 | ||||||
| Dover, DE MSA | 189,789 | Kent County, Delaware | 189,789 | ||||
| Vineland, NJ MSA | 152,326 | Cumberland County, New Jersey | 152,326 | ||||
| none | Seaford, DE μSA | 263,509 | Sussex County, Delaware | 263,509 | |||
| State of Delaware | 1,031,890 |
The following table provides the in-state population ranking of each CBSA along with its rate of population change over time.
| scope=col rowspan=2 | 2023 rank | scope=col rowspan=2 | Core-based statistical area | Population | |||||
|---|---|---|---|---|---|---|---|---|---|
| scope=col | 2023 estimate | scope=col | Change | scope=col | 2020 Census[3] | scope=col | Change | scope=col | 2010 Census[4] |
| scope=row | Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA (DE) | ||||||||
| scope=row | Seaford, DE μSA | ||||||||
| scope=row | Dover, DE MSA | ||||||||
| Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA | |||||||||
The following table provides the in-state population ranking of each CSA along with its rate of population change over time.
| scope=col rowspan=2 | 2023 rank | scope=col rowspan=2 | Combined statistical area | Population | |||||
|---|---|---|---|---|---|---|---|---|---|
| scope=col | 2023 estimate | scope=col | Change | scope=col | 2020 Census[5] | scope=col | Change | scope=col | 2010 Census[6] |
| scope=row | Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA (DE) | ||||||||
| Philadelphia-Reading-Camden, PA-NJ-DE-MD CSA | |||||||||