Allegheny County vs Westmoreland County, PA: growth, jobs and income compared
Allegheny County is shrinking more slowly than Westmoreland County: −0.2% vs −0.3% between 2024 and 2025. Allegheny County lost 2,139 residents and Westmoreland County lost 1,149 residents (Census Bureau population estimates).
Data as of 2025 · updated
Side by side
| Measure | Allegheny County | Westmoreland County |
|---|---|---|
| Population2025 | 1,225,035 Larger | 349,324 |
| Population change2020–25 | −2.0% | −1.4% Higher |
| Net domestic migration per 1,000 residents2025 | −2.3 | 1.8 Higher |
| Private-sector job growth2018–23 | +0.6% Higher | −0.6% |
| Median household income2020–24 | $78,548 Higher | $74,109 |
| Unemployment rate2025 | 4.0% Lower | 4.2% |
| New homes permitted per 1,000 residents2025 | 2.6 Higher | 1.2 |
The tag marks the stronger figure in each row: the higher one, or the lower one for the unemployment rate ("Larger" is only the head count). Changes compare the latest period with five years earlier. – means no figure, or a base too small for a change or rate (it would swing on a few people). A figure from another period shows its year and is left out of the comparison.
The two counties share a border, and both are part of the Pittsburgh, PA metro area.
Each county in full
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Questions
Is Allegheny County or Westmoreland County growing faster?
Allegheny County is shrinking more slowly than Westmoreland County: −0.2% vs −0.3% between 2024 and 2025. Allegheny County lost 2,139 residents and Westmoreland County lost 1,149 residents (Census Bureau population estimates).
Which has the higher median household income, Allegheny County or Westmoreland County?
Allegheny County: $78,548, against $74,109 in Westmoreland County (American Community Survey 5-year estimates, 2020–24).
Which has the lower unemployment rate, Allegheny County or Westmoreland County?
Allegheny County: 4.0%, against 4.2% in Westmoreland County (2025 annual average, BLS Local Area Unemployment Statistics).
Where they rank in the state
- Pennsylvania counties by population growth
- Pennsylvania counties by net domestic migration per 1,000 residents
- Pennsylvania counties by private-sector job growth
- Pennsylvania counties by median household income
- Pennsylvania counties by lowest unemployment rate
- Pennsylvania counties by new homes permitted per 1,000 residents
More comparisons
Sources and method
- U.S. Census Bureau, Population Estimates Program (Vintage 2025)
- U.S. Bureau of Labor Statistics, Local Area Unemployment Statistics
- U.S. Census Bureau, Building Permits Survey
- U.S. Census Bureau, American Community Survey 5-year estimates
- U.S. Census Bureau, County Business Patterns
Each number shows its own period. Changes compare the latest period with five years earlier (or the earliest period available). Beacon CRE last refreshed these figures on 2026-11-05. Figures come from public federal statistics and are informational only, not investment advice. Check the source before relying on a number. Methodology: how we compute every number. More on every layer: data sources and licences.