Buffalo Grove village, Illinois
Official LSAD Designation: Buffalo Grove village • Census GEOID: 1709447
• Cook County / Lake County
Demographics & Population Profile
Population and demographics for Buffalo Grove village.
| Demographic Variable | Estimate / Count | Margin of Error | Period | Source |
|---|---|---|---|---|
| Total Population (2025 PEP Estimate) | 42,812 | — | 2025 | Census |
| Median Age | 42 yrs | ±1 | 2020-2024 | Census ACS 5-Year 2024 |
| Total Households | 16,213 | ±461 | 2020-2024 | Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).