AO
Andrew Olson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Andrew Olson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Andrew & Andrew — first a son (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Olson |
| Given Name | Andrew |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Fisherman |
| Industry | Halibut |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Fisherman |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1918 |
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 Andrew | Age | Birth yr |
|---|---|---|---|---|
| Elsie Olson | Daughter | — | 25 | ~1915 |
| Grace Olson | Other | — | 25 | ~1915 |
| Ray Olson | Son | — | 26 | ~1914 |
| Evelyn Olson | Daughter | — | 19 | ~1921 |
| Emma Olson | Head | — | 51 | ~1889 |
| Andrew Olson | Son | — | 22 | ~1918 |
Census Appearances
1920
King, Washington
Son, age 2
King, Washington · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | Andrew E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 12
King, Washington · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olson |
| Given Name | Andrew J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 22
King-County, Washington · implied b. ~1918 — 6 household members
| Surname | Olson |
| Given Name | Andrew |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Fisherman |
| Industry | Halibut |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 400 |
| Highest Grade | C 3 |
| 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 Andrew Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Andrew Olsen (~0.92 confidence) and father Andrew Olson (~0.92 confidence) and mother Emma Olson (~0.92 confidence) and mother Emma Olsen (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Andrew Olsen
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Andrew Olson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Emma Olson
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Emma Olsen
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Andrew Olson
Son · 1940 · age 22 · b. ~1918 · Washington
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Sibling
Ray Olson
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Olson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elsie Olson
Sibling · 1940 · age 25
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
1940 US Federal Census — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-04375-00377)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Wife La Retta | None | F | — | — |
| 2 | Daughter Sharon | None | F | — | — |
| 3 | Brother Charles | None | M | City | — |
| 4 | Henry H. Becker | 76 | Head | Maintenance Man | Canada-Eng |
| 5 | Edna Becker | 75 | Wife | — | Canada-Eng |
| 6 | John Thurston | 47 | Head | Auto Electrician | Colorado |
| 7 | Marguerite Thurston | 50 | Wife | — | Canada-Eng |
| 8 | Palmer Thurston | 20 | Son | — | Colorado |
| 9 | Dorothy Thurston | 18 | Daughter | — | Colorado |
| 10 | Margaret Thurston | 17 | Daughter | — | Oregon |
| 11 | Mary Hall | 78 | Mother-in-law | — | Canada-Eng |
| 12 | Kathleen Hall | 38 | Sister-in-law | — | Washington |
| 13 | Lawrence Parish | 44 | Head | Janitor | Indiana |
| 14 | Iva Parish | 44 | Wife | — | Indiana |
| 15 | Mae Parish | 11 | Daughter | — | Washington |
| 17 | Hillian Jackson | 40 | Head | Optometrist | Missouri |
| 18 | Dora Jackson | 40 | Wife | — | Wisconsin |
| 19 | Madeleine Jackson | 16 | Daughter | — | Washington |
| 20 | William Jackson | 13 | Son | — | Washington |
| 21 | Merrill Lamson | 34 | Head | Reg. Sub Clerk | California |
| 22 | Bernice Lamson | 33 | Wife | — | Washington |
| 23 | Emma Olson | 51 | Head | — | Norway |
| 24 | Elsie Olson | 25 | Daughter | Stenographer | Washington |
| 25 | Andrew Olson THIS PERSON | 22 | Son | Fisherman | Washington |
| 26 | Evelyn Olson | 19 | Daughter | — | Washington |
| 27 | Ray Olson | 26 | Son | Dispatcher | Washington |
| 28 | Grace Olson | 25 | Daughter-in-law | Stenographer | Washington |
| 29 | Douglas Volney Gibson | 43 | Head | Electrician | Wisconsin |
| 30 | Hazel Gayle Gibson | 32 | Wife | Clerk-Sales | Minnesota |
| 31 | Blanche G. Kimble | 78 | Mother | — | Wisconsin |
| 32 | Emil Volney | 62 | Head | Shipping Clerk | Minnesota |
| 33 | Anna Volney | 60 | Wife | — | Minnesota |
| 34 | Mabel Volney | 30 | Son | Marker | Washington |
| 35 | Winifred Volney | 25 | Daughter | Factory Worker | Washington |
| 38 | Ernest Larson | 63 | Head | Store Keeper | Minnesota |
| 39 | Louise Larson | 58 | Wife | Clerk | Minnesota |
| 40 | Phyllis Larson | 23 | Daughter | Service Repres. | No. Dakota |
Pedigree Summary
Andrew + 3 siblings
Gen 1 · 4 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)