| Name | Status | State(s) | Population census 1990-04-01 | Population census 2000-04-01 | Population census 2010-04-01 | Population estimate 2012-07-01 | |
|---|---|---|---|---|---|---|---|
| Pittsburgh - New Castle - Weirton | Combined Statistical Area | PA-OH-WV | 2,797,052 | 2,747,388 | 2,660,733 | 2,661,369 | |
| All Metropolitan Areas | 234,680,262 | 266,339,058 | 293,306,359 | 298,521,424 |
Source: US Census Bureau (web).
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