AC
Arthur Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Arthur Carlson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Carl & Carl — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Carlson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1919 |
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 Arthur | Age | Birth yr |
|---|---|---|---|---|
| Hulda Carlson | Spouse | — | 60 | ~1880 |
| Arthur Carlson | Son | — | 21 | ~1919 |
| Carl Carlson | Head | — | 57 | ~1883 |
| Earling Carlson | Son | — | 28 | ~1912 |
| Eleanor Carlson | Daughter | — | 23 | ~1917 |
Census Appearances
1920
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| 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 11
Cook, Illinois · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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 21
Cook-County, Illinois · implied b. ~1919 — 5 household members
| Surname | Carlson |
| Given Name | Arthur |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| 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 Arthur Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Carlson (~0.92 confidence) and father Carl Carlson (~0.92 confidence) and father Carl Carlson (~0.92 confidence) and mother Hulda Carlson (~0.92 confidence) and mother Hulda Carlson (~0.92 confidence) and mother Hulda Carlson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Carlson
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Carl Carlson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Carl Carlson
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Hulda Carlson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Hulda Carlson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Hulda Carlson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arthur Carlson
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Eleanor Carlson
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Earling Carlson
Sibling · 1940 · age 28
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
40 people indexed on this census page (nara:1940:m-t0627-00987-00357)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Albert Nygren | 29 | Head | Con Goods Buyer | Illinois |
| 2 | Anne Nygren | 26 | Wife | — | Illinois |
| 3 | Nancy Nygren | 1 | Daughter | — | Illinois |
| 4 | Albert Hanson | 52 | Head | Bartender | Illinois |
| 5 | Sophie Hanson | 45 | Wife | All Around Helper | Illinois |
| 6 | James Miller | 53 | Head | Welder | Illinois |
| 7 | Anna Miller | 53 | Wife | — | Illinois |
| 8 | Ethel Mckay | 29 | Daughter | Compt. Switch Board | Illinois |
| 9 | James T Miller | 26 | Son | Shipping Clerk | Illinois |
| 10 | Andrew Miller | 17 | Son | Welder | Illinois |
| 11 | Donald Mckay | 9 | Grandson | — | Illinois |
| 12 | Carl E Carlson | 57 | Head | Motorman | Sweden |
| 13 | Hulda Carlson | 60 | Wife | — | Sweden |
| 14 | Earling Carlson | 28 | Son | Conductor | Illinois |
| 15 | Eleanor Carlson | 23 | Daughter | Steno | Illinois |
| 16 | Arthur Carlson THIS PERSON | 21 | Son | — | Illinois |
| 17 | Charles Wagner | 51 | Head | Electrotyper | Illinois |
| 18 | Effie Wagner | 49 | Wife | — | Illinois |
| 19 | Helen Wagner | 25 | Daughter | Beautician | Illinois |
| 20 | Charles Krause | 79 | Lodger | — | Germany |
| 21 | John Osterman | 47 | Head | Time Study Man | Illinois |
| 22 | Hallie Osterman | 47 | Wife | — | Illinois |
| 23 | John Jr Osterman | 27 | Son | Draftsman | Illinois |
| 24 | Keith Osterman | 22 | Son | Packer | Illinois |
| 25 | Frank Tolbert | 31 | Head | Truck Driver | Illinois |
| 26 | Ruth Tolbert | 34 | Wife | — | Illinois |
| 27 | Frank Jr. Tolbert | 5 | Son | — | Illinois |
| 28 | Ernest Dachow | 53 | Head | Electrical Repair | Illinois |
| 29 | Louise Dachow | 53 | Wife | — | Illinois |
| 30 | Ernest A. Dachow | 26 | Son | New Worker | Illinois |
| 31 | William Dachow | 21 | Son | Bakers Helper | Illinois |
| 32 | Ernest W Dachow | 79 | Head | — | Germany |
| 33 | Bertha Dachow | 78 | Wife | — | Germany |
| 34 | John Nielsen | 25 | Head | Feeder | Illinois |
| 35 | Mary Nielsen | 58 | Mother | Sales Lady | Illinois |
| 36 | Ernest Roller | 52 | Head | Tailor | Austria |
| 37 | Ida Roller | 50 | Wife | — | Austria |
| 38 | Ernest Jr Roller | 27 | Son | Checker Of Radio | Illinois |
| 39 | Marko Lepcin | 49 | Head | Pastry Baker | Austria |
| 40 | Anna Lepcin | 36 | Wife | — | Austria |
Pedigree Summary
Arthur + 2 siblings
Gen 1 · 6 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)