Gillette city, Wyoming
Official LSAD Designation: Gillette city • Census GEOID: 5631855
• Campbell County
Demographics & Population Profile
Population and demographics for Gillette city.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 34,024 | — | 2025 | Census |
| Median Age | 34.2 yrs | ±1.4 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 12,689 | ±495 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).