RC
Robert Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Robert Carlson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Albert & Marie — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Carlson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Laborer |
| Industry | Sign Painting |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 390 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Carlson | Son | — | 22 | ~1918 |
| Betty Carlson | Daughter | — | 6 | ~1934 |
| Walter Carlson | Son | — | 21 | ~1919 |
| Marie Carlson | Spouse | — | 44 | ~1896 |
| Albert Carlson | Head | — | 48 | ~1892 |
Census Appearances
1920
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 22
Cook-County, Illinois · implied b. ~1918 — 5 household members
| Surname | Carlson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Laborer |
| Industry | Sign Painting |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 390 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Robert Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Carlson (~0.92 confidence) and mother Marie Carlson (~0.92 confidence) and mother Marie Carlson (~0.92 confidence) and mother Mary Carlson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Carlson
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Marie Carlson
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Marie Carlson
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Mary Carlson
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Carlson
Son · 1940 · age 22 · b. ~1918 · Illinois
★ You are viewing this record
Sibling
Betty Carlson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Carlson
Sibling · 1940 · age 21
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
41 people indexed on this census page (nara:1940:m-t0627-01001-00107)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arlene Masser | 15 | Daughter | — | Illinois |
| 2 | Shirley Masser | 13 | Daughter | — | Illinois |
| 3 | Morey Masser | 10 | Son | — | Illinois |
| 4 | Morris Kadish | 37 | Head | Secretary | Illinois |
| 5 | Dorothy Kadish | 34 | Wife | — | Russia |
| 6 | Marshall Kadish | 1 | Son | 0 | Illinois |
| 7 | Josephine Tyrell | 22 | Servant | Servant | Illinois |
| 8 | Gustav Carlson | 58 | Head | Production Manager | Sweden |
| 9 | Emma Carlson | 51 | Wife | — | Sweden |
| 10 | Kenneth Carlson | 18 | Son | — | Michigan |
| 11 | Maynard Knutson | 37 | Head | Jobber | Illinois |
| 12 | Bernice Knutson | 38 | Wife | — | Illinois |
| 13 | Maynard Jr. Knutson | 14 | Son | — | Illinois |
| 14 | Ronald Knutson | 8 | Son | — | Illinois |
| 15 | Kenneth Knutson | 5 | Son | — | Illinois |
| 16 | Ralph Schmiedel | 35 | Head | Accountant | Ohio |
| 17 | Melba Schmiedel | 35 | Wife | Stenographer | Ohio |
| 18 | Carol Schmiedel | 5 | Daughter | — | Ohio |
| 19 | Sylvia Harvey | 57 | Mother-in-law | — | Ohio |
| 20 | Flora Dunbar | 90 | Grandmother-in-law | — | Ohio |
| 21 | Albert Carlson | 48 | Head | Butcher | Sweden |
| 22 | Marie Carlson | 44 | Wife | — | Sweden |
| 23 | Robert Carlson THIS PERSON | 22 | Son | Laborer | Illinois |
| 24 | Walter Carlson | 21 | Son | Butcher | Illinois |
| 25 | Betty Carlson | 6 | Daughter | — | Illinois |
| 26 | Charles Hoffman | 54 | Head | Accountant | Illinois |
| 27 | Myrtle Hoffman | 50 | Wife | — | Illinois |
| 28 | Charlotte Hoffman | 20 | Daughter | Stenographer | Illinois |
| 29 | David Levy | 36 | Head | Physician | Illinois |
| 30 | Dorothy Levy | 31 | Wife | — | New York |
| 31 | Gerald Levy | 8 | Son | — | Illinois |
| 32 | James Levy | 2 | Son | — | Illinois |
| 33 | Lillian Leven | 26 | Sister-in-law | — | New York |
| 34 | Joe Reeder | 37 | Head | Salesman | Russia |
| 35 | Pauline Reeder | 33 | Wife | — | Russia |
| 36 | Merton Reeder | 7 | Son | — | Illinois |
| 37 | Lois Reeder | 5 | Daughter | — | Illinois |
| 38 | Rosalie Reeder | 1 | Daughter | — | Illinois |
| 39 | Gertrude Gill | 41 | Servant | Servant | Illinois |
| 40 | Hymen Cohen | 39 | Head | Salesman | Illinois |
| 41 | Minnie Cohen | 35 | Wife | — | New York |
Related Census Records
Pedigree Summary
Robert + 2 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)