Unfortunately there is no way to know this number precisly. USBC has a record of all sanctioned 300's in America, however this do not include 300's bowled for fun or practice or in unsanctioned leagues and tournaments, or before the establishment of USBC. So theres no definite answer.
Jim Hosier has bowled 112 perfect games in his career.
I don't believe this statistic is kept. The list of 300 games can be found at the Hall of Fame Bowling Museum in Arlington, TX
As of 4-13-2015, the number of 300 games Bob Learn has bowled is 115.
It is not a known statistic, however for USBC, you can compare the list of names of who bowled a 300 and how many bowled an 800 and then how many of those who bowled an 800 had a 300.
Many people have bowled a 300 game. About 26,000 people a year. You can check the USBC website for a listing of sanctioned 300 game bowlers.
Two. One on 10/5/2000 and one on 9/19/2005.
Bob Learn Jr., has bowled 100 USBC approved 300 games, Last one bowed at 300 Bowl in Waterford Michigan 9-28-2010.
It depends on if you are speaking of sanctioned 300 games by ABC, WIBC and/or YABA or by the PBA. For the earlier, you would need to check the International Bowling Museum / Hall of Fame in Arlington, TX for that data.
There is a very long list of bowlers in the IBHOF who have bowled a sanctioned 300 game.
I am part of a bowling team and i dont know many people who have bowled a 300/perfect game. i do know a few good players though and i have seen people bowl 300. x