You can see how Janopoulos families moved over time by selecting different census years. The Janopoulos family name was found in the USA in 1920. In 1920 there were 3 Janopoulos families living in Massachusetts. This was about 75% of all the recorded Janopoulos's in USA. Massachusetts had the highest population of Janopoulos families in 1920.

Use census records and voter lists to see where families with the Janopoulos surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.