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

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