At the time of the Revolution:

  • 98 percent of the country was Protestant;

  • around 1 percent was Catholic; and

  • one-tenth of one percent was Jewish.

https://newsmaven.io/americanminute/american-history/penn-s-holy-experiment-the-seed-of-a-nation-tY5hIxCH6US1HFPRs9v-fg/