| Place Name | Idylwood |
| Place Type | Census Designated Place |
| ZIP Code(s) | 22042 22043 22046 |
| County | Fairfax County |
| Area Code(s) | 571,703 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 16,756 |
| Population Growth Rate (2010-19) | 3.85% |
| Majority Ethnicity | White 53.94% |
| Metro/Micro Stats Area | Washington-Arlington-Alexandria, DC-VA-MD-WV |
| US Congressional District(s) | Virginia 8th |
| House of Delegates Districts | 53 |
| State Senate Districts | 35 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 53.94% |
| African American | 5.45% |
| Hispanic | 0.19% |
| Asian | 22.74% |
| Native American | 0.03% |
| Hawaiin/Pacific Islander | 17.65% |