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Oscar Anderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Oscar Anderson across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Julia — first a head (b.~1888), then head of a 4-person household.
Age 52
b. ~1888
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO CITY |
| 1935 Residence (County) | COOK |
| Additional Details | |
| Occupation | Engineer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 3200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Engineer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1888 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Oscar Anderson | Head | — | 52 | ~1888 |
| Marion Watson | Other | — | 30 | ~1910 |
| Dick Anderson | Son | — | 10 | ~1930 |
| Helma Anderson | Spouse | — | 48 | ~1892 |
Census Appearances
1910
Cook, Illinois
Son, age 23
Cook, Illinois · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Swed. Swedish |
| Mother's Birthplace | Norw. Norwegian |
| Occupation | Carpenter |
| Industry | Buildings |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Head, age 32
Cook, Illinois · implied b. ~1888 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | House Builder |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 42
Cook, Illinois · implied b. ~1888 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 31 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Carpenter |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 10,500 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 52
Cook-County, Illinois · implied b. ~1888 — 4 household members
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO CITY |
| 1935 Residence (County) | COOK |
| Occupation | Engineer |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 3200 |
| Highest Grade | No 8 |
| 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 Oscar Anderson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Julia Anderson (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Julia Anderson
b. ~1855
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Anderson
Head · 1940 · age 52 · b. ~1888 · 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
39 people indexed on this census page (nara:1940:m-t0627-01000-00141)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elaine P Hayden | 45 | Daughter | Social Worker | Iowa |
| 42 | Catherine B Hayden | 7 | Daughter | — | Illinois |
| 43 | Mary Williams | 37 | Maid | Housework | South Dakota |
| 44 | John M Shipe | 74 | Head | — | Ohio |
| 45 | Ira Shipe | 69 | Wife | — | Iowa |
| 46 | Thor A Hansen | 43 | Lodger | Salesman | Illinois |
| 47 | William Clark | 42 | Lodger | Salesman | Pennsylvania |
| 48 | Arthur G Duval | 68 | Head | Salesman | Wisconsin |
| 49 | Katherine Duval | 68 | Wife | — | Illinois |
| 50 | Oscar Anderson THIS PERSON | 52 | Head | Engineer | Illinois |
| 51 | Helma Anderson | 48 | Wife | — | Sweden |
| 52 | Dick Anderson | 10 | Son | — | Illinois |
| 53 | Marion Watson | 30 | Lodger | Stenographer | Illinois |
| 54 | Omar G Sone | 39 | Head | Carpenter | Norway |
| 55 | Marie E Sone | 44 | Wife | — | Norway |
| 56 | Roy B Sone | 10 | Son | — | Illinois |
| 57 | Rayna Ostradt | 49 | Sister-in-law | Saleswoman | Norway |
| 58 | Doris Ostradt | 19 | Niece | Stenographer | Illinois |
| 59 | Carl J Wallach | 48 | Head | Salesman | Illinois |
| 60 | Adele M Wallach | 48 | Wife | — | Illinois |
| 61 | Lillian Du Plain | 65 | Aunt | Forelady | Illinois |
| 62 | James Lynch | 28 | Head | Salesman | Illinois |
| 63 | Dorothy K Lynch | 27 | Wife | — | Illinois |
| 64 | Mary Missing | 55 | Head | — | Illinois |
| 65 | Olaf Hansen | 65 | Head | Clerk | Illinois |
| 66 | Mary Hansen | 63 | Sister | Saleswoman | Illinois |
| 67 | Harry M Gray | 47 | Head | Salesman | Iowa |
| 68 | Marguerite Gray | 45 | Wife | — | Illinois |
| 69 | Harry Jr Gray | 21 | Son | New Worker | Illinois |
| 70 | Elizabeth Seydell | 40 | Sister-in-law | Clerk | Illinois |
| 71 | Edwin C Pinyard | 35 | Head | Mechanic | Michigan |
| 72 | Ruth N Pinyard | 31 | Wife | Trimmer | Michigan |
| 73 | Clyde M Deardorff | 53 | Head | Salesman | Iowa |
| 74 | Gertrude Deardorff | 47 | Wife | — | Illinois |
| 76 | John Guest | 64 | Head | Printer | England |
| 77 | Catherine Guest | 60 | Wife | — | Illinois |
| 78 | William Young | 71 | Head | — | Illinois |
| 79 | Anna Young | 59 | Wife | — | Ireland |
| 80 | Hilma Sandell | 71 | Head | — | Sweden |
Pedigree Summary
Oscar
Gen 1 · 1 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)