Which is the nicest family beach?

Beach 10 or 11 for sure .

We personally liked 10

I recommend the Mill Road Beaches and also Beach 11, because they are smoke-free. Here's a description of all of the beaches, straight from the park's official site: https://www.dcnr.pa.gov/StateParks/FindAPark/PresqueIsleStatePark/Pages/Swimming.aspx

They all seem "family" oriented.i believe swimming only where life guards are.