| Place Name | Olney |
| Place Type | Census Designated Place |
| ZIP Code(s) | 20832 |
| GEOID | 2458900 |
| County | Montgomery County |
| Area Code(s) | 240,301 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2021) | 35,815 |
| Majority Ethnicity | White 62.9% |
| Metro/Micro Stats Area | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| US Congressional District(s) | Maryland 3rdMaryland 8th |
| House of Delegates Districts | 14,19 |
| State Senate Districts | 14,19 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 62.9% |
| African American | 13.78% |
| Hispanic | 0.49% |
| Asian | 12.86% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 9.98% |