- Delfino Airstrip: 1
- Delfino Plaza: 19
- Bianco Hills, Gelato Beach, Ricco Harbor, Pinna Park, Noki Bay, Sirena Beach, Pianta Village: 30
- Corona Mountain: 10
Total of 240. Sorry, no way to find out how many are left or, but you can see how many blue coins you have collected in an area by pressing the Z button and selecting a level on the map. The amount of blue coins collected in that area is shown at the bottom right. Unfortunately, Delfino Plaza does not show this tally.
Source(s)
