However, research from different sources can help us make an estimate. Here are some studies that can help us answer this question:
* A study from 2023 showed that 83% of all American women between 18-49 years old painted their nails.
Considering all of these factors, a reasonable estimate might be that a significant portion of girls paint their nails, likely more than half, but the exact percentage is difficult to pinpoint without more specific demographic information.