Mackay city, Idaho
Official LSAD Designation: Mackay city • Census GEOID: 1649240
• Custer County
Demographics & Population Profile
Population and demographics for Mackay city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 480 | — | 2025 | Census |
| Median Age | 61.7 yrs | ±4.5 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 277 | ±88 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).