Sienncki Family History

You can see how Sienncki families moved over time by selecting different census years. The Sienncki family name was found in the USA in 1920. In 1920 there was 1 Sienncki family living in Connecticut. This was 100% of all the recorded Sienncki's in USA. Connecticut had the highest population of Sienncki families in 1920.

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