The 1865 Minnesota census showed Charles Genser living with his parents Michael and Margaretha in Chaska, Minnesota. His other siblings were Mary, Martin, E., Margaretha, Joseph, and George.

The 1875 Minnesota census showed Charles Genser (age 26, born in France) living with his parents Michael (age 60, born in France) and Maggie (age 55, born in France) in Chaska, Minnesota. His other siblings were Martin (age 23, born in France), Maggie (age 17, born in Minnesota), Josephine (age 15, born in Minnesota), and George (age 11, born in Minnesota).

The 1880 United States census showed Charles Guenser (age 30, born in France, farmer) married to Flora (Riedele, age 20, born in Minnesota) and living in Chaska, Minnesota. Son Charles (age 1, born in Minnesota) also lived with the couple.

The 1885 Minnesota census showed Charles Guenser (age 36, born in Germany) married to Flora (age 25, born in Minnesota) and living in Chaska, Minnesota. Children Charles (age 5, born in Minnesota) and Heinrich (age 4, born in Minnesota) also lived with the couple.

The 1900 United States census showed Charles Guenser (age 50, born in November 1849 in Germany, provision dealer) married to Flora (age 40, born in March 1860 in Minnesota) and living in Chaska, Minnesota. Children Henry M. (age 19, born in October 1880 in Minnesota) and Flora C. (age 14, born in May 1886 in Minnesota) also lived with the couple.

The 1910 United States census showed Chas. Guenser (age 59, born in Germany, butcher and farmer) married to Flora (age 50, born in Minnesota) and living in Chaska, Minnesota. Children Henry (age 29, born in Minnesota) and Clara (age 23, born in Minnesota) also lived with the couple.

The 1920 United States census showed Charles Guenser (age 71, born in Germany, proprietor brickyard) married to Loirra (age 58, born in Minnesota) and living in Two Rivers Township, Morrison County, Minnesota. Daughter Clara (age 33, born in Minnesota) also lived with the couple.

Charles Guenser died in March 1922.