Office of Planning, Environment, & Realty (HEP)
Planning • Environment • Real Estate
| STATE | COUNTY | 2001.7.1 POPULATION |
1-Hr O3 Classification |
O3 WT |
CO Classification |
CO WT |
POPULATION FINAL WTED |
|---|---|---|---|---|---|---|---|
| US States and Territories (Total) | 171,927,016 | 205,020,910 | |||||
| PENNSYLVANIA | 10,400,192 | 11,497,012 | |||||
| Allentown-Bethlehem-Easton | |||||||
| Carbon | 59,506 | Marginal | 1.0 | 59,506 | |||
| Lehigh | 314,204 | Marginal | 1.0 | 314,204 | |||
| Northampton | 269,779 | Marginal | 1.0 | 269,779 | |||
| Altoona | |||||||
| Blair | 128,391 | Marginal | 1.0 | 128,391 | |||
| Erie | |||||||
| Erie | 279,636 | Marginal | 1.0 | 279,636 | |||
| Johnstown | |||||||
| Cambria | 150,726 | Marginal | 1.0 | 150,726 | |||
| Somerset | 79,553 | Marginal | 1.0 | 79,553 | |||
| Harrisburg-Lebanon-Carlisle | |||||||
| Cumberland | 215,695 | Marginal | 1.0 | 215,695 | |||
| Dauphin | 251,316 | Marginal | 1.0 | 251,316 | |||
| Lebanon | 120,963 | Marginal | 1.0 | 120,963 | |||
| Perry | 43,787 | Marginal | 1.0 | 43,787 | |||
| Lancaster | |||||||
| Lancaster | 474,601 | Marginal | 1.0 | 474,601 | |||
| Philadelphia-Wilmington-Atlantic City, PA-DE-NJ-MD | |||||||
| Bucks | 605,379 | Severe | 1.3 | Maintenance | 1.1 | 865,692 | |
| Chester | 443,346 | Severe | 1.3 | Maintenance | 1.1 | 633,985 | |
| Delaware | 551,158 | Severe | 1.3 | Maintenance | 1.1 | 788,156 | |
| Montgomery | 759,953 | Severe | 1.3 | Maintenance | 1.1 | 1,086,733 | |
| Philadelphia | 1,491,812 | Severe | 1.3 | Maintenance | 1.1 | 2,133,291 | |
| Pittsburgh-Beaver Valley | |||||||
| Allegheny | 1,270,612 | Maintenance | 0.8 | 1,016,490 | |||
| Armstrong | 72,101 | Maintenance | 0.8 | 57,681 | |||
| Beaver | 179,871 | Maintenance | 0.8 | 143,897 | |||
| Butler | 176,593 | Maintenance | 0.8 | 141,274 | |||
| Fayette | 147,367 | Maintenance | 0.8 | 117,894 | |||
| Washington | 203,737 | Maintenance | 0.8 | 162,990 | |||
| Westmoreland | 368,983 | Maintenance | 0.8 | 295,186 | |||
| Reading | |||||||
| Berks | 377,679 | Maintenance | 0.8 | 302,143 | |||
| Scranton-Wilkes-Barre | |||||||
| Columbia | 64,152 | Marginal | 1.0 | 64,152 | |||
| Lackawanna | 211,829 | Marginal | 1.0 | 211,829 | |||
| Luzerne | 315,754 | Marginal | 1.0 | 315,754 | |||
| Monroe | 144,676 | Marginal | 1.0 | 144,676 | |||
| Wyoming | 28,055 | Marginal | 1.0 | 28,055 | |||
| York | |||||||
| Adams | 92,997 | Marginal | 1.0 | 92,997 | |||
| York | 386,299 | Marginal | 1.0 | 386,299 | |||
| Youngstown-Warren-Sharon | |||||||
| Mercer | 119,682 | Marginal | 1.0 | 119,682 |