The Rapid Growth of Christianity

From a very small group in a dusty rural community, the Good News of Christianity rapidly exploded upon the world.  The numbers below are very rough estimates but are almost universally agreed to be accurate.

ca 30 AD                        ca 50

ca 100 Ad                       several thousand

1^st  Century                     500,000 to 1,000,000

2^nd Century                    2,000,000

10^th Century                   50,000,000

15^th Century                   100,000,000

18^th Century                   200,000,000

19^th Century                   400,000,000

Today                             2,200,000,000

Many of the modern 2.2 billion may be only nominally Christian, but if only 10% are actually Christian, then we number 220,000,000.  The actual percentage is probably higher than 10%.