OJ
Oscar Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Oscar Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Constance — first a head (b.~1893), then head of a 6-person household.
Age 47
b. ~1893
Male
Head
Born: Norway
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Laborer |
| Industry | Stone |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 818 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Occupation | Laborer |
| Township / Ward | Chicago |
| Est. Birth Year | ~1893 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Lillian Johnson | Daughter | — | 12 | ~1928 |
| Grace Johnson | Daughter | — | 20 | ~1920 |
| Sonja Johnson | Daughter | — | 7 | ~1933 |
| Oscar Johnson | Head | — | 47 | ~1893 |
| Ascaly Johnson | Son | — | 6 | ~1934 |
| Signe Johnson | Spouse | — | 41 | ~1899 |
Census Appearances
1910
Cook, Illinois
Son, age 17
Cook, Illinois · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Norway |
| Year of Immigration | 1891 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1920
Cook, Illinois
Head, age 27
Cook, Illinois · implied b. ~1893 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1910 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Salesman |
| Industry | Pie Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1930
Cook, Illinois
Head, age 37
Cook, Illinois · implied b. ~1893 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Norway |
| Naturalization Status | Naturalized |
| Year of Immigration | 1910 |
| Age at First Marriage | 27 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Salesman |
| Industry | Pie Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Home Value / Rent | 65 |
| Radio Set | R |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Cook-County, Illinois
Head, age 47
Cook-County, Illinois · implied b. ~1893 — 6 household members
| Surname | Johnson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Laborer |
| Industry | Stone |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 818 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
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 Oscar Johnson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Johnson (~0.92 confidence) and mother Constance Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Constance Johnson
b. ~1867
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Johnson
Head · 1940 · age 47 · b. ~1893 · Illinois
★ You are viewing this record
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-t0627-00993-00242)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Carson | 29 | Head | Machinist | Iowa |
| 42 | Helen Carson | 29 | Wife | File Clerk | Illinois |
| 43 | Mary Carson | 62 | Mother | — | Illinois |
| 44 | Edward Berner | 33 | Head | Bartender | Illinois |
| 45 | Helen B Berner | 27 | Wife | — | Germany |
| 46 | Robert Berner | 5 | Son | — | Illinois |
| 47 | Robert Frehe | 22 | Head | Elevator Operator | Illinois |
| 48 | Elsa D Frehe | 22 | Wife | — | Denmark |
| 49 | Glenna Frehe | 1 | Daughter | — | Illinois |
| 50 | Frank S Baron | 41 | Head | Janitor | Poland |
| 51 | Gustaf Suschke | 56 | Head | Cook & Ship Master | Germany |
| 52 | Marie Suschke | 56 | Wife | — | Germany |
| 53 | Vincent Fillippine | 26 | Head | Foreman | Illinois |
| 54 | Margaret Fillippine | 25 | Wife | — | Illinois |
| 55 | Harry Meyer | 50 | Head | Carpet Repairer | Illinois |
| 56 | Lorena Meyer | 37 | Wife | — | Illinois |
| 57 | Roland Meyer | 15 | Son | — | Illinois |
| 58 | Oscar Johnson THIS PERSON | 47 | Head | Laborer | Norway |
| 59 | Signe Johnson | 41 | Wife | — | Norway |
| 60 | Grace Johnson | 20 | Daughter | Machine Operator | Illinois |
| 61 | Lillian Johnson | 12 | Daughter | — | Illinois |
| 62 | Sonja Johnson | 7 | Daughter | — | Illinois |
| 63 | Ascaly Johnson | 6 | Son | — | Illinois |
| 64 | Charles Sievert | 57 | Head | Salesman | Germany |
| 65 | Martha Sievert | 54 | Wife | — | Germany |
| 66 | Ruth Sievert | 31 | Daughter | New Worker | Illinois |
| 67 | Clarence Geyer | 58 | Head | Painter | Pennsylvania |
| 68 | Mary Geyer | 48 | Wife | — | New York |
| 69 | Malcolm Geyer | 23 | Son | Laborer | Illinois |
| 70 | Marcia Geyer | 14 | Daughter | — | Illinois |
| 71 | Emanuel Morgan | 49 | Head | Truck Driver | Indiana |
| 72 | Myrtle Morgan | 48 | Wife | House Lady | Tennessee |
| 73 | George Adams | 45 | Lodger | Printer | Mississippi |
| 74 | Laura Adams | 43 | Lodger | — | Missouri |
| 75 | George Jr Adams | 17 | Lodger | — | Mississippi |
| 76 | Emil Bunkert | 71 | Head | Street Sweeper | Germany |
| 77 | Alvina Bunkert | 67 | Wife | — | Illinois |
| 78 | Earl Bunkert | 22 | Nephew | Delivery Boy | Illinois |
| 79 | Frank Hoffer | 63 | Head | — | Wisconsin |
| 80 | Lillie Hoffer | 59 | Wife | — | Illinois |
Pedigree Summary
Oscar
Gen 1 · 2 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)