The 1880 United States census showed Rudolph Carlson (age 8, born in Wisconsin) living with his parents Hans (age 30, born in Norway, farm laborer) and Amelia (age 28, born in Norway) in Hesper Township, Winneshiek County, Iowa. His other siblings were Lewis (age 3, born in Minnesota) and Jennie (age 2 months, born in Minnesota).

The 1885 Minnesota census showed Rudolph Carlson (age 13, born in Minnesota) living with his mother Amelia (age 35, born in Canada) in Crookston, Minnesota. His other siblings were Louis (age 8, born in Minnesota), Jane (age 5, born in Minnesota), and Anna (age 1, born in Minnesota).

The 1895 Minnesota census showed Rudolph Carlson (age 23, born in Wisconsin, brick setter) living with his mother Amelia (age 43, born in Norway) in Crookston, Minnesota. His other siblings were Louie (age 17, born in Iowa), Jenney (age 15, born in Iowa), and Anna (age 13, born in Iowa).

The 1900 United States census showed Rudolph Carlson (age 28, born in October 1872 in Wisconsin, brickyard foreman) married to Emma (age 28, born in February 1872 in Sweden) and living in Crookston, Minnesota. Children Lilian G. (age 1, born in August 1898 in Minnesota) and Florence (age 7 months, born in October 1899 in Minnesota) also lived with the couple.

The 1905 Minnesota census showed Rudolf Carlson (age 33, born in Wisconsin, brickyard foreman) married to Emma (age 33, born in Sweden) and living in Crookston, Minnesota. Children Lillian (age 6, born in Minnesota), Florence (age 5, born in Minnesota), Edith (age 3, born in Minnesota), and Genet (age 1, born in Minnesota) also lived with the couple.

The 1910 United States census showed Rudolph Carlson (age 38, born in Iowa, brickyard manager) married to Emma M. (age 38, born in Sweden) and living in Crookston, Minnesota. Children Lillian (age 11, born in Minnesota), Florence (age 10, born in Minnesota), Jeannett (age 6, born in Minnesota), Gladys (3, born in Minnesota), and Elanson (age 2, born in Minnesota) also lived with the couple.

The 1920 United States census showed Rudolph Carlson (age 47, born in Wisconsin, smelter laborer) married to Emma M. (age 47, born in Sweden) and living in Great Falls, Montana. Children Lillian (age 21, born in Minnesota), Florence (age 20, born in Minnesota), Jeannette (age 15, born in Minnesota), Gladys (12, born in Minnesota), and Elnora (age 11, born in Minnesota), Kennith (age 8, born in Minnesota), and Vernon (age 6, born in Minnesota) also lived with the couple.

The 1930 United States census showed Rudolph Carlson (age 58, born in Wisconsin, brickyard foreman) married to Emma (age 58, born in Sweden) and living in Wrenshall, Minnesota. Children Kennith (age 19, born in Minnesota, brickyard laborer) and Vernon (age 16, born in Minnesota, brickyard laborer) also lived with the couple.

Rudolph Carlson died March 5, 1946, in St. Louis County, Minnesota.