| Place Name | Willow Oak |
| Place Type | Census Designated Place |
| ZIP Code(s) | 33811 33860 |
| County | Polk County |
| Area Code(s) | 863 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 5,188 |
| Population Growth Rate (2010-19) | 1.10% |
| Majority Ethnicity | Hispanic 1.21% |
| Metro/Micro Stats Area | Lakeland-Winter Haven, FL |
| US Congressional District(s) | Florida 17th |
| State House Districts | 56 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 47.38% |
| African American | 3.26% |
| Hispanic | 1.21% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 48.15% |