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Mammoth CDP, PA
ZIP 15666 — People & Community
Source: U.S. Census Bureau ACS 2019–2023 5-Year Estimates. Page data updated 2026-08-02.
Middle ClassLow Snow Area
Demographics, education attainment, health access, and community lifestyle
Population & Demographics in 15666
15666 has a population of 15,420 with a median age of 49.3 yrs (48.0% male).
Health & Community Indicators in 15666
Historical Trends in 15666 (2020–Present)
Since 2020, population declined 2.1%, median income rose 8.4% (inflation-adjusted), home values decreased 0.7%.
People & Community key statistics
| Population | |
|---|---|
| Population | 15,420 |
| Median age | 49.3 |
| Poverty rate | 10.8% |
| Demographics | |
|---|---|
| White | 97.9% |
| Hispanic | 0.3% |
| Black | 0.2% |
| Asian | 0.1% |
| Foreign-born | 4.2% |