| Place Name | Willow Street |
| Place Type | Census Designated Place |
| ZIP Code(s) | 17584 |
| County | Lancaster County |
| Area Code(s) | 717 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 7,210 |
| Population Growth Rate (2010-19) | 20.73% |
| Majority Ethnicity | White 87.95% |
| Metro/Micro Stats Area | Lancaster, PA |
| US Congressional District(s) | Pennsylvania 16th |
| State House Districts | 43,100 |
| State Senate Districts | 13 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 87.95% |
| African American | 0.9% |
| Hispanic | 0.24% |
| Asian | 3.67% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 7.25% |