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Oscar Olson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Cook, Illinois
Our Model Tree links this Oscar Olson across the 1910, 1920 and 1930 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Hans & Hulda — first a son (b.~1900), then head of a 8-person household.
Age 20
b. ~1900
Male
Son
Born: Illinois
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | Olson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Additional Details | |
| Occupation | Driver |
| Industry | Baker |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Driver |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1900 |
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 1920 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Helen Olson | Daughter | — | 16 | ~1904 |
| Ethel Olson | Daughter | — | 10 | ~1910 |
| Margaret Olson | Daughter | — | 7 | ~1913 |
| Elizabeth Olson | Daughter | — | 4 | ~1916 |
| Hans Olson | Head | — | 56 | ~1864 |
| Harold Olson | Son | — | 23 | ~1897 |
| Arthur Olson | Son | — | 18 | ~1902 |
| Oscar Olson | Son | — | 20 | ~1900 |
Census Appearances
1910
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Swed. Swedish |
| Mother's Birthplace | Swed. Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Cook, Illinois
Son, age 20
Cook, Illinois · implied b. ~1900 — 8 household members
| Surname | Olson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Driver |
| Industry | Baker |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 31
Cook, Illinois · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Oscar C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Driver |
| Industry | Ice Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Olson across 3 US Census years (1910, 1920 and 1930) in Cook, Illinois, using XGBoost record linkage. Identified parents: father Hans Olson (~0.92 confidence) and mother Hulda Olson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hans Olson
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Hulda Olson
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Olson
Son · 1920 · age 20 · b. ~1900 · Illinois
★ You are viewing this record
Sibling
Arthur Olson
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Olson
Sibling · 1920 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Olson
Sibling · 1920 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Olson
Sibling · 1920 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Olson
Sibling · 1920 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Olson
Sibling · 1920 · age 4
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
1920 US Federal Census — Cook, Illinois
Open full size
1920 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu338unit:0874)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Clifford | 8 | Son | None | Illinois |
| 52 | Robert | 5 | Son | None | Illinois |
| 53 | Augusta Kanter | 60 | Boarder | None | Germany |
| 54 | Dennis Mccarthy | 61 | Head | Laborer | Michigan |
| 55 | Daniel Mccarthy | 29 | Son | Conductor | Illinois |
| 56 | Edward Mccarthy | 25 | Son | Chauffeur | Illinois |
| 57 | Edna Mccarthy | 19 | Daughter | None | Illinois |
| 58 | Andrew Biscoglia | 47 | Head | Tailor | Italy |
| 59 | Edith Biscoglia | 42 | Wife | None | Wisconsin |
| 60 | Frank Biscoglia | 25 | Son | Checker | Wisconsin |
| 61 | Lawrence Biscoglia | 21 | Son | Chauffeur | Illinois |
| 62 | Marguerite Biscoglia | 15 | Daughter | None | Illinois |
| 63 | Gustaf A. Olson | 28 | Head | Manager | Illinois |
| 64 | Eleanor Olson | 23 | Wife | None | Illinois |
| 65 | Hans Olson | 56 | Head | Painter | Norway |
| 66 | Harold Olson | 23 | Son | Office Clk | Illinois |
| 67 | Oscar Olson THIS PERSON | 20 | Son | Driver | Illinois |
| 68 | Arthur Olson | 18 | Son | Salesman | Illinois |
| 69 | Helen Olson | 16 | Daughter | None | Illinois |
| 70 | Ethel Olson | 10 | Daughter | None | Illinois |
| 71 | Margaret Olson | 7 | Daughter | None | Illinois |
| 72 | Elizabeth Olson | 4 | Daughter | None | Illinois |
| 73 | Mark S. Barnes | 55 | Head | R. R. Clerk | Michigan |
| 74 | Emma Barnes | 51 | Wife | None | Michigan |
| 75 | Arthur V. Barnes | 29 | Son | Office Clk | Michigan |
| 76 | Irma Barnes | 27 | Daughter | Stenographer | Michigan |
| 77 | Mary Reardon | 28 | Head | None | Illinois |
| 78 | Edward Reardon | 27 | Brother | Steamfitter | Illinois |
| 79 | Michael Reardon | 24 | Brother | Packer | Illinois |
| 80 | Richard Reardon | 21 | Brother | Packer | Illinois |
| 81 | James Reardon | 17 | Brother | Printer | Illinois |
| 82 | Alice Reardon | 15 | Sister | Sales | Illinois |
| 83 | Catherine Reardon | 13 | Sister | None | Illinois |
| 84 | Daniel Reardon | 13 | Brother | None | Illinois |
| 85 | Nora Ferguson | 47 | Head | None | Ireland |
| 86 | John Ferguson | 23 | Son | Manager | Illinois |
| 87 | Mary Ferguson | 21 | Daughter | Telephone Op | Illinois |
| 88 | Thomas Ferguson | 20 | Son | None | Illinois |
| 89 | Nora Ferguson | 17 | Daughter | None | Illinois |
| 90 | Alice Ferguson | 15 | Daughter | None | Illinois |
| 91 | Edward Ferguson | 13 | Son | None | Illinois |
| 92 | James Ferguson | 10 | Son | None | Illinois |
| 93 | Henry Dickman | 56 | Head | Mail Carrier | Norway |
| 94 | Lena Dickman | 54 | Wife | None | Norway |
| 95 | Bernice Dickman | 14 | Daughter | None | Illinois |
| 96 | Fred Thomsen | 27 | Head | Driver | Denmark |
| 97 | Edna Thomsen | 26 | Wife | None | Illinois |
| 98 | Augusta Pruitt | 61 | Mother-in-law | None | Illinois |
| 99 | Clarence Soderblom | 22 | Boarder | Cutter | Illinois |
| 100 | Anton Smetana | 33 | Head | Butcher | Austria |
Pedigree Summary
Oscar + 6 siblings
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 1920 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)