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Jack Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Jack Johnson across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1928 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Jack | Age | Birth yr |
|---|---|---|---|---|
| Charlotte Johnson | Daughter | — | 21 | ~1919 |
| Annette Johnson | Daughter | — | 12 | ~1928 |
| Anna Johnson | Head | — | 50 | ~1890 |
| Phillip Johnson | Son | — | 1 | ~1939 |
| Arthur Johnson | Son | — | 21 | ~1919 |
| Jack Johnson | Son | — | 12 | ~1928 |
| Burton Johnson | Son | — | 20 | ~1920 |
| Raymond Johnson | Son | — | 7 | ~1933 |
Census Appearances
1930
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1929 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 12
Cook-County, Illinois · implied b. ~1928 — 8 household members
| Surname | Johnson |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 5 |
| 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 Jack Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jack Johnson
Son · 1940 · age 12 · b. ~1928 · Illinois
★ You are viewing this record
Sibling
Arthur Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annette Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Burton Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillip Johnson
Sibling · 1940 · age 1
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-t0627-01022-00385)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Emil Reding | 47 | Head | Maintenance | Illinois |
| 2 | Margaret Reding | 41 | Wife | — | Wisconsin |
| 3 | Raymond Reding | 14 | Son | Pin Setter | Illinois |
| 4 | Robert Reding | 18 | Son | Delivery Boy | Wisconsin |
| 5 | Mary Reding | 14 | Daughter | — | Illinois |
| 6 | Ezrouiel | Ezrouel Alegria | 39 | Head | Jeweler | Mexico |
| 7 | Marjorie Alegria | 35 | Wife | — | Wisconsin |
| 8 | Gloria Alegria | 11 | Daughter | — | Illinois |
| 9 | Henry Hughes | 47 | Head | Watchman | England |
| 10 | Daisy Hughes | 47 | Wife | — | England |
| 11 | Evelyn Hughes | 17 | Daughter | — | Canada-English |
| 12 | Brenda Hughes | 15 | Daughter | — | Canada-English |
| 13 | Norah Hughes | 13 | Daughter | — | Canada-English |
| 14 | Roger Hughes | 7 | Son | — | Illinois |
| 15 | Louis Levine | 60 | Head | Proprietor | Russia |
| 16 | Rebecca Levine | 58 | Wife | — | Russia |
| 17 | John Berk | 68 | Head | Elevator Boy | Ohio |
| 18 | Catherine Berk | 63 | Wife | — | Illinois |
| 19 | Edward Berk | 22 | Son | Elevator Boy | Indiana |
| 20 | Charles Senbauch | Senbauch | 41 | Head | Mail Man | Oklahoma |
| 21 | Maude Senbauch | Senbauch | 40 | Wife | — | Virginia |
| 22 | Troy Jones | 20 | Son | Clerk | Virginia |
| 23 | Irene Jones | 19 | Daughter | — | Tennessee |
| 24 | Mary Kate Jones | 16 | Daughter | — | Virginia |
| 25 | Fred Jones | 14 | Son | — | Virginia |
| 26 | Jos. Kramer | 35 | Lodger | Candy Maker | Wisconsin |
| 27 | Eva Kramer | 26 | Lodger | — | Ohio |
| 28 | Mary O'Neil | 25 | Lodger | — | Indiana |
| 29 | Anna Johnson | 50 | Head | — | Illinois |
| 30 | Raymond Johnson | 7 | Son | — | Illinois |
| 31 | Charlotte Johnson | 21 | Daughter | Bookkeeper | Illinois |
| 32 | Phillip Johnson | 1 | Son | — | Illinois |
| 33 | Arthur Johnson | 21 | Son | Clerk | Illinois |
| 34 | Burton Johnson | 20 | Son | Clerk | Illinois |
| 35 | Annette Johnson | 12 | Daughter | — | Illinois |
| 36 | Jack Johnson THIS PERSON | 12 | Son | — | Illinois |
| 37 | Gertrude Ball | 70 | Head | — | England |
| 38 | Tom Quirk | 42 | Lodger | Janitor | Montana |
| 39 | Gordon Moy | 45 | Head | Laundry Man | China |
| 40 | John Dewitt | 37 | Head | Upholsterer | Canada-English |
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)