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Oscar Anderson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Oscar Anderson across the 1910, 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents Beatrice & Sophie — first a son (b.~1888), then head of a 2-person household.
Age 52
b. ~1888
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline City |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | Proprietor |
| Industry | Grocery Store |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 843 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Proprietor |
| Township / Ward | Moline 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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Oscar Anderson | Son | — | 52 | ~1888 |
| Josephine Oleson | Spouse | — | 61 | ~1879 |
Census Appearances
1910
Rock Island, …
Other, age 25
Rock Island, Illinois · implied b. ~1885 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Roomer |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Industry | Shop |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Rock Island, …
Son, age 34
Rock Island, Illinois · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Industry | Garage |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Son, age 43
Rock Island, Illinois · implied b. ~1887 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Auto Mechanic |
| Industry | Auto Repair Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Son, age 52
Rock-Island-County, Illinois · implied b. ~1888 — 2 household members
| Surname | Anderson |
| Given Name | Oscar |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline City |
| 1935 Residence (County) | Rock Island |
| Occupation | Proprietor |
| Industry | Grocery Store |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 843 |
| Highest Grade | 8 |
| 1935 Residence | Same House |
| 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 Beatrice Anderson (~0.92 confidence) and mother Sophie Anderson (~0.92 confidence) and mother Josephine Oleson (~0.60 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.81
Mother
Beatrice Anderson
b. ~1852
Source mother
● Household
· direct · ~0.92
Mother
Sophie Anderson
b. ~1856
Source mother
● Household
· direct · ~0.92
Mother
Josephine Oleson
b. ~1879
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Oscar Anderson
Son · 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 — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00875-00026)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Josephine Oleson | 61 | wife | — | Illinois |
| 2 | Oscar Anderson THIS PERSON | 52 | son | Proprietor | Illinois |
| 3 | Angelo Kokinos | 44 | Head | Case Cleaner | Greece |
| 4 | Pearl Kokinos | 36 | wife | Packer | Greece |
| 5 | James Kokinos | 17 | son | — | Illinois |
| 6 | Theodore Vassaka | 34 | Head | Laster | Greece |
| 7 | Nicholas Vassaka | 9 | son | — | Illinois |
| 8 | Basil Vassaka | 7 | son | — | Illinois |
| 9 | Clarence Steele | 48 | Head | Machine Operator | Illinois |
| 10 | Stella Steele | 45 | wife | — | Illinois |
| 11 | Francis Steele | 19 | son | Apprentice Draftsman | Illinois |
| 12 | Clarence Steele | 16 | son | — | Illinois |
| 13 | Betty Steele | 10 | daughter | — | Illinois |
| 14 | Oscar Placek | 25 | Head | Grinder | Missouri |
| 15 | Rose Placek | 24 | wife | — | Illinois |
| 16 | Norene Placek | 6 | daughter | — | Illinois |
| 17 | Juanita Placek | 4 | daughter | — | Illinois |
| 18 | Gloria Placek | 3 | daughter | — | Illinois |
| 19 | Sarah Wardell | 62 | Head | — | Ohio |
| 20 | Lawrence Session | 40 | son | Laborer | Ohio |
| 21 | Anna M. Session | 39 | daughter-in-law | — | Illinois |
| 22 | Lawrence Jr. Session | 6 | grandson | — | Illinois |
| 23 | Ralph Session | 5 | grandson | — | Illinois |
| 24 | Mary La Fave | 65 | Head | — | France |
| 25 | Edward La Fave | 25 | son | Molder | Illinois |
| 26 | Eva Nix | 64 | Head | Domestic | Illinois |
| 27 | Extra Line - Roomer | None | did longer here | — | — |
| 28 | Walter Buman | 55 | Head | Searcher | Kentucky |
| 29 | Bessie Buman | 56 | wife | — | Kentucky |
| 30 | Mike Bwedzinski | 51 | Head | Keeper | Minnesota |
| 31 | Elizabeth Bwedzinski | 45 | wife | — | Nebraska |
| 32 | Adeline Bwedzinski | 11 | daughter | — | Minnesota |
| 33 | Donald Bwedzinski | 7 | daughter | — | Minnesota |
| 34 | William Roeh | 39 | Head | Machine Operator | Iowa |
| 35 | Elizabeth M. Roeh | 37 | wife | — | Iowa |
| 36 | Ruth Roeh | 14 | daughter | — | Iowa |
| 37 | Lois Roeh | 12 | daughter | — | Iowa |
| 38 | Ole Berge | 42 | Head | Carpenter | Norway |
| 39 | Gertrude Berge | 38 | wife | — | Illinois |
| 40 | Jeanette Berge | 11 | daughter | — | Illinois |
Pedigree Summary
Oscar
Gen 1 · 3 parents
~0.81
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)