| Circle Oaks | |
| Settlement Type: | Unincorporated community |
| Pushpin Map: | USA California#USA |
| Pushpin Map Caption: | Location within the state of California |
| Pushpin Relief: | 1 |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | California |
| Subdivision Type2: | County |
| Subdivision Name2: | Napa |
| Unit Pref: | Imperial |
| Population As Of: | 2000 |
| Population Density Km2: | auto |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Coordinates: | 38.4103°N -122.2108°W |
| Postal Code Type: | ZIP codes |
| Blank Name: | FIPS code |
| Blank1 Name: | GNIS feature ID |
Circle Oaks is an unincorporated community in the hills to the northeast of the Napa Valley. Created in 1964, this wildland interface has thrived since, growing into a small country community outside of a bustling valley. Lots in the community are circular, with the areas between the circles ("triangles") considered to be non-developable "greenbelt", an idea supposedly envisioned by renowned architect Frank Lloyd Wright. The community was initially planned to have an airstrip and golf course, but these never materialized.[1]
Circle Oaks was threatened, but not significantly damaged, by the 2017 Atlas Fire and the 2020 Hennessey Fire.