RC
Ruth Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Mclean-County, North Dakota
Our Model Tree links this Ruth Carlson across the 1920, 1930 and 1940 US Censuses in Mclean-County, North Dakota (XGBoost, ~Confirmed), with identified parents August & August — first a daughter (b.~1916), then head of a 9-person household.
Age 24
b. ~1916
Female
Daughter
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mclean-County, North Dakota |
| Surname | Carlson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Township 149 Range 85 |
| 1935 Residence (County) | McLean |
| Additional Details | |
| Occupation | Teacher |
| Industry | Rural school |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 134 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Teacher |
| Township / Ward | Township 149 Range 85 |
| Est. Birth Year | ~1916 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ruth | Age | Birth yr |
|---|---|---|---|---|
| Ruth Carlson | Daughter | — | 24 | ~1916 |
| Arnold Carlson | Son | — | 15 | ~1925 |
| Frank Johnson | Other | — | 33 | ~1907 |
| Mrs Carlson | Head | — | 54 | ~1886 |
| August Carlson | Son | — | 22 | ~1918 |
| Carl Carlson | Son | — | 17 | ~1923 |
| Oscar Carlson | Other | — | 69 | ~1871 |
| Bernice Carlson | Daughter | — | 20 | ~1920 |
| Grace Johnson | Daughter | — | 32 | ~1908 |
Census Appearances
1920
Mclean, North …
Daughter, age 4
Mclean, North Dakota · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Ruth E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Norway |
| Speaks English | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1930
Mclean, North …
Daughter, age 14
Mclean, North Dakota · implied b. ~1916 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Ruth E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Norway |
| Can Read/Write | Yes |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Mclean-County, North …
Daughter, age 24
Mclean-County, North Dakota · implied b. ~1916 — 9 household members
| Surname | Carlson |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | Township 149 Range 85 |
| 1935 Residence (County) | McLean |
| Occupation | Teacher |
| Industry | Rural school |
| Class of Worker | GW |
| Hours Worked | 35 |
| Income (1939) | 134 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Ruth Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father August Carlson (~0.92 confidence) and father August Carlson (~0.92 confidence) and mother Mrs Carlson (~0.92 confidence) and mother Bertha Carlson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
August Carlson
b. ~1868
Source father
● Household
· direct · ~0.92
Father
August Carlson
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mrs Carlson
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Bertha Carlson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Carlson
Daughter · 1940 · age 24 · b. ~1916 · North Dakota
★ You are viewing this record
Sibling
August Carlson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Carlson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Carlson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arnold Carlson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Grace Johnson
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Mclean-County, North Dakota
Open full size
1940 US Federal Census — Mclean-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03006-00910)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sidney H. Mcelwain | 53 | Head | Farmer | South Dakota |
| 2 | Sarah Mcelwain | 47 | Wife | — | Minnesota |
| 3 | Vernon Mcelwain | 11 | Son | — | Washington |
| 4 | Marilyn Mcelwain | 11 | Daughter | — | North Dakota |
| 5 | Eda J. Mcelwain | 74 | Mother | — | Iowa |
| 6 | Fred O. Hanson | 52 | Head | Farmer | North Dakota |
| 7 | Minnie B. Hanson | 53 | Wife | — | North Dakota |
| 8 | Caroline Hanson | 16 | Daughter | — | North Dakota |
| 9 | June Hanson | 11 | Daughter | — | North Dakota |
| 10 | Gabe Usalman | 27 | Hired man | Laborer | North Dakota |
| 11 | William Trueblood | 33 | Head | Farmer | North Dakota |
| 12 | Elvira S. Trueblood | 31 | Wife | — | North Dakota |
| 13 | Loren Trueblood | 10 | Son | — | North Dakota |
| 14 | Robert Trueblood | 9 | Son | — | North Dakota |
| 15 | Celeste Trueblood | 7 | Daughter | — | North Dakota |
| 16 | Myron Trueblood | 4 | Son | — | North Dakota |
| 17 | Howard Trueblood | 2 | Son | — | North Dakota |
| 18 | Mrs. Bertha Carlson | 54 | Head | — | Norway |
| 19 | Ruth Carlson THIS PERSON | 24 | Daughter | Teacher | North Dakota |
| 20 | August Carlson | 22 | Son | Teacher | North Dakota |
| 21 | Bernice Carlson | 20 | Daughter | Teacher | North Dakota |
| 22 | Carl Carlson | 17 | Son | Laborer | North Dakota |
| 23 | Arnold Carlson | 15 | Son | — | North Dakota |
| 24 | Frank H. Johnson | 33 | Son-in-law | Farmer | Iowa |
| 25 | Grace Johnson | 32 | Daughter | — | North Dakota |
| 26 | Oscar Carlson | 69 | Brother-in-law | — | Sweden |
| 27 | Joseph Bentley | 84 | Head | — | Iowa |
| 28 | Bonnie B. Bentley | 42 | Wife | — | Tennessee |
| 29 | Clara May Bentley | 20 | Daughter | — | North Dakota |
| 30 | Jean Rae Bentley | 17 | Daughter | — | North Dakota |
| 31 | Ole N. Ostby | 49 | Head | Farmer | Minnesota |
| 32 | Emma C. Ostby | 36 | Wife | — | Minnesota |
| 33 | Shirley Mae Ostby | 12 | Daughter | — | North Dakota |
| 34 | Norman Ostby | 11 | Son | — | North Dakota |
| 35 | Vernon Ostby | 9 | Son | — | North Dakota |
| 36 | Carol Ostby | 7 | Daughter | — | North Dakota |
| 37 | Audrey Jean Ostby | 5 | Daughter | — | North Dakota |
| 38 | Lora Lee Ostby | 2 | Daughter | — | North Dakota |
| 39 | Leann Ostby | 0 | Daughter | — | North Dakota |
| 40 | Emanuel Anderson | 54 | Head | Farmer | Norway |
Pedigree Summary
Ruth + 5 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)