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Where is the Koyanagi family from?
You can see how Koyanagi families moved over time by selecting different census years. The Koyanagi family name was found in the USA, and Canada between 1911 and 1920. The most Koyanagi families were found in USA in 1920. In 1911 there were 2 Koyanagi families living in British Columbia. This was 100% of all the recorded Koyanagi's in Canada. British Columbia had the highest population of Koyanagi families in 1911.
Use census records and voter lists to see where families with the Koyanagi surname lived. Within census records, you can often find information like name of household members, ages, birthplaces, residences, and occupations.
Between 1964 and 2004, in the United States, Koyanagi life expectancy was at its lowest point in 1970, and highest in 1988. The average life expectancy for Koyanagi in 1964 was 69, and 86 in 2004.