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| Component Change History |
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| Apr 1950 |
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| - | | Bucks County, PA included as original component of Philadelphia, PA-NJ SMA |
| - | | Chester County, PA included as original component of Philadelphia, PA-NJ SMA |
| - | | Delaware County, PA included as original component of Philadelphia, PA-NJ SMA |
| - | | Montgomery County, PA included as original component of Philadelphia, PA-NJ SMA |
| - | | Philadelphia County, PA included as original component of Philadelphia, PA-NJ SMA |
| - | | Philadelphia, PA designated as original central city of new Philadelphia, PA-NJ SMA |
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| Jun 2003 |
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| - | | New Metro Division: Philadelphia, PA Metro Division in Philadelphia-Camden-Wilmington, PA-NJ-DE-MD Metro Area in Philadelphia-Camden-Vineland, PA-NJ-DE-MD CSA (The Philadelphia Metro Division included only the counties in Pennsylvania that had been in the Philadelphia PMSA. The New Jersey counties became part of the Camden Metro Division.) |
| - | | Bucks County, PA included as original Metro Division component, transferred from Philadelphia, PA-NJ PMSA in Philadelphia-Wilmington-Atlantic City, PA-NJ-DE CMSA |
| - | | Chester County, PA included as original Metro Division component, transferred from Philadelphia, PA-NJ PMSA in Philadelphia-Wilmington-Atlantic City, PA-NJ-DE CMSA |
| - | | Delaware County, PA included as original Metro Division component, transferred from Philadelphia, PA-NJ PMSA in Philadelphia-Wilmington-Atlantic City, PA-NJ-DE CMSA |
| - | | Montgomery County, PA included as original Metro Division component, transferred from Philadelphia, PA-NJ PMSA in Philadelphia-Wilmington-Atlantic City, PA-NJ-DE CMSA |
| - | | Philadelphia County, PA included as original Metro Division component, transferred from Philadelphia, PA-NJ PMSA in Philadelphia-Wilmington-Atlantic City, PA-NJ-DE CMSA |
| - | | Philadelphia, PA designated as original principal city of new Metro Division, transferred from Philadelphia, PA-NJ PMSA in Philadelphia-Wilmington-Atlantic City, PA-NJ-DE CMSA |
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