LJ
Leroy Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Leroy Johnson across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 9-person household.
Age 17
b. ~1923
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Leroy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Chicago-City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | new worker |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | New Worker |
| Township / Ward | Chicagocity |
| Est. Birth Year | ~1923 |
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 Leroy | Age | Birth yr |
|---|---|---|---|---|
| Edwin Johnson | Head | — | 44 | ~1896 |
| Stanley Johnson | Son | — | 19 | ~1921 |
| Leroy Johnson | Son | — | 17 | ~1923 |
| Lunt Johnson | Son | — | 1 | ~1939 |
| Helga Johnson | Spouse | — | 44 | ~1896 |
| Bernice Johnson | Daughter | — | 8 | ~1932 |
| Ingrid Johnson | Daughter | — | 5 | ~1935 |
| Robert Johnson | Son | — | 21 | ~1919 |
| Edwin Johnson | Son | — | 11 | ~1929 |
Census Appearances
1930
Cook, Illinois
Son, age 6
Cook, Illinois · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leroy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | Sweden |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Cook-County, Illinois
Son, age 17
Cook-County, Illinois · implied b. ~1923 — 9 household members
| Surname | Johnson |
| Given Name | Leroy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Chicago-City |
| 1935 Residence (County) | Cook |
| Occupation | new worker |
| Class of Worker | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Leroy Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leroy Johnson
Son · 1940 · age 17 · b. ~1923 · Illinois
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Sibling
Bernice Johnson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lunt Johnson
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ingrid Johnson
Sibling · 1940 · age 5
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-t0627-00987-00748)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Francesca Izbicky | 6 | Grand daughter | — | Poland |
| 42 | Joe Stern | 35 | Son-in-law | — | Poland |
| 43 | Alice Stern | 33 | Daughter | Gen. Office Work | Poland |
| 44 | Paul Stern | 8 | Son | — | Poland |
| 45 | Jack Fabian | 33 | Head | Salesman | Austria |
| 46 | Rose Fabian | 31 | Wife | — | Illinois |
| 47 | Harry Joe Fabian | 3 | Son | — | Illinois |
| 48 | Samuel Fabian | 2 | Son | — | Illinois |
| 49 | Thomas Goldberg | 72 | Father-in-law | — | Lithuania |
| 50 | Bessie Goldberg | 35 | Sister-in-law | Gen. Office Work | England |
| 51 | Thurmont Anderson | 34 | Head | Printer | Illinois |
| 52 | Delores Anderson | 23 | Wife | — | North Dakota |
| 53 | Joan Anderson | 1 | Daughter | — | Illinois |
| 54 | William Scramstad | 26 | Head | Rearner|Reamer|Learner | Illinois |
| 55 | Alice Scramstad | 23 | Wife | — | Wisconsin |
| 56 | Albert Scramstad | 62 | Father | Laborer | Illinois |
| 57 | Roy H. Brophy | 45 | Head | Truck Driver | Illinois |
| 58 | Lena Brophy | 43 | Wife | — | Arkansas |
| 59 | Stanley Oloneki | 50 | Head | Presser | Poland |
| 60 | Bernice Oloneki | 53 | Wife | — | Illinois |
| 61 | Edward Oloneki | 18 | Son | — | Illinois |
| 62 | Sophy Oloneki | 15 | Daughter | — | Illinois |
| 63 | Edwin Johnson | 44 | Head | Night Watchman | So Dakota |
| 64 | Helga Johnson | 44 | Wife | — | Sweden |
| 65 | Robert Johnson | 21 | Son | Ccc Camp | So Dakota |
| 66 | Stanley Johnson | 19 | Son | New Worker | So Dakota |
| 67 | Leroy Johnson THIS PERSON | 17 | Son | New Worker | Minnesota |
| 68 | Edwin Johnson | 11 | Son | — | Illinois |
| 69 | Bernice Johnson | 8 | Daughter | — | Illinois |
| 70 | Ingrid Johnson | 5 | Daughter | — | Illinois |
| 71 | Lunt Johnson | 1 | Son | — | Illinois |
| 72 | James Huggins | 39 | Head | Automobile Mechanic | Illinois |
| 73 | Sophie Huggins | 31 | Wife | — | Illinois |
| 74 | Barbara Huggins | 8 | Daughter | — | Illinois |
| 75 | Delores Huggins | 7 | Daughter | — | Illinois |
| 76 | Jeanette Huggins | 5 | Daughter | — | Illinois |
| 77 | James Jr. Huggins | 1 | Son | — | Illinois |
| 78 | Anna Sbeling | 40 | Head | Kitchen Help | Illinois |
| 79 | Gertrude Sbeling | 21 | Daughter | Maid | Illinois |
| 80 | Wm H. Sbeling | 16 | Son | — | Illinois |
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)