 It doubled between 1100 and 1300 from 5,000 to 10,000, and in 1400 counted 14,000 inhabitants.By 1550, the population of metropolitan Kraków was 18,000; although it went down to 15,000 in the next fifty years due to calamity.By the early 17th century the Kraków population had reached 28,000 inhabitants.