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Oscar Olson — 1920 US Census Record
Model Tree available1920 United States Federal Census · King, Washington
Our Model Tree links this Oscar Olson across the 1920, 1930 and 1940 US Censuses in King, Washington (XGBoost, ~Confirmed), with identified parents Chas & Nettie — first a son (b.~1896), then head of a 5-person household.
Age 24
b. ~1896
Male
Son
Born: Washington
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | King, Washington |
| Surname | Olson |
| Given Name | Oscar C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Laborer |
| Township / Ward | Gilman Precinct |
| Est. Birth Year | ~1896 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Alma Olson | Daughter | — | 24 | ~1896 |
| Chas Olson | Head | — | 53 | ~1867 |
| Mary Olson | Other | — | 84 | ~1836 |
| Oscar Olson | Son | — | 24 | ~1896 |
| Nettie Olson | Spouse | — | 52 | ~1868 |
Census Appearances
1920
King, Washington
Son, age 24
King, Washington · implied b. ~1896 — 5 household members
| Surname | Olson |
| Given Name | Oscar C. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 34
King, Washington · implied b. ~1896 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Contractor |
| Industry | Road Building |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Veteran | WW |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Head, age 44
King-County, Washington · implied b. ~1896 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Renton City |
| 1935 Residence (County) | King |
| Occupation | Truck driver |
| Industry | Ice Plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | H 8 |
| 1935 Residence | Same House |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chas Olson (~0.92 confidence) and mother Nettie Olson (~0.92 confidence) and mother Mathilda Olsen (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chas Olson
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Nettie Olson
b. ~1868
Source mother
● Household
· direct · ~0.92
Mother
Mathilda Olsen
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Olson
Son · 1920 · age 24 · b. ~1896 · Washington
★ You are viewing this record
Sibling
Alma Olson
Sibling · 1920 · age 24
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 — King, Washington
Open full size
1920 US Federal Census — King, Washington
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1924unit:0912)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Plum | 44 | Head | Common Laborer | Germany |
| 2 | Elizabeth Plum | 39 | Wife | — | Hungary |
| 3 | Bertha Plum | 13 | Daughter | — | Washington |
| 4 | Joseph O. Plum | 11 | Son | — | Washington |
| 5 | Elsie M. Plum | 9 | Daughter | — | Washington |
| 6 | Anna Marie Plum | 7 | Daughter | — | Washington |
| 7 | Marie Christine Plum | 5 | Daughter | — | Washington |
| 8 | Leslie B. Plum | 3 | Daughter | — | Washington |
| 9 | Annie E. Plum | 1 | Daughter | — | Washington |
| 10 | Bertha Plum | 76 | Mother | — | Germany |
| 11 | Chas L. Olson | 53 | Head | Farmer | Norway |
| 12 | Nettie C. Olson | 52 | Wife | — | Iowa |
| 13 | Oscar C. Olson THIS PERSON | 24 | Son | Laborer | Washington |
| 14 | Alma Olson | 24 | Daughter | — | Washington |
| 15 | Mary Alice Olson | 84 | Mother | — | Pennsylvania |
| 16 | W. Shellenberger | 44 | Head | Farmer & Machinist | Wisconsin |
| 17 | Lida Shellenberger | 41 | Wife | — | Pennsylvania |
| 18 | Corina Shellenberger | 17 | Daughter | — | Washington |
| 19 | Joe King | 39 | Head | Logger | Oregon |
| 20 | Sam King | 45 | Hired Hand | Stableman | Missouri |
| 21 | Mary Webster | 44 | Head | — | Prussia |
| 22 | George Webster | 44 | Husband | Farmer | Kansas |
| 23 | Helen Dutton | 26 | Daughter | Farmer | Washington |
| 24 | John Gallick | 43 | Head | Saw Mill Man | California |
| 25 | Stella Gallick | 42 | Wife | — | Kansas |
| 26 | Wayne Gallick | 13 | Son | — | Washington |
| 27 | Miles Gallick | 11 | Son | — | Washington |
| 28 | Francis Gallick | 6 | Daughter | — | Washington |
| 29 | Howard Miller | 51 | Boarder | Laborer | Kansas |
| 30 | Harry Key | 44 | Head | Farmer | Indiana |
| 31 | Vi Key | 34 | Wife | — | Indiana |
| 32 | Thelma Key | 16 | Daughter | — | Illinois |
| 33 | Margaret Dutton | 57 | Wife | — | Isle of Man |
| 34 | Thomas Babbon | 60 | Head | Farmer & Dairy Truck | Isle of Man |
| 35 | Ruth Babbon | 25 | Daughter | — | Washington |
| 36 | Will Babbon | 23 | Son | Clerk | Washington |
| 37 | Nelson Babbon | 21 | Son | — | Washington |
| 38 | Margaret Babbon | 19 | Daughter | — | Washington |
| 39 | Mike Lapinski | 44 | Head | Miner | Austria |
| 40 | Mary Lapinski | 36 | Wife | — | Austria |
| 41 | Joe Lapinski | 17 | Son | Miner | Austria |
| 42 | Mary Lapinski | 10 | Daughter | — | Washington |
| 43 | Helen Lapinski | 8 | Daughter | — | Washington |
| 44 | Clement Lapinski | 6 | Son | — | Washington |
| 45 | Mike Lapinski | 4 | Son | — | Washington |
| 46 | Tony Lapinski | 2 | Son | — | Washington |
| 47 | John Stidel | 49 | Head | — | Germany |
| 48 | Mary Stidel | 46 | Wife | — | Germany |
| 49 | Henry Stidel | 16 | Son | — | Washington |
| 50 | Joseph Reale | 65 | Head | — | France |
Pedigree Summary
Oscar + 1 sibling
Gen 1 · 3 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)