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Oscar Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Multnomah-County, Oregon
Our Model Tree links this Oscar Larson across the 1920, 1930 and 1940 US Censuses in Multnomah-County, Oregon (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 4-person household.
Age 53
b. ~1887
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Multnomah-County, Oregon |
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Driver |
| Industry | Transfer Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Driver |
| Township / Ward | Portland City |
| Est. Birth Year | ~1887 |
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 |
|---|---|---|---|---|
| Anna Larson | Spouse | — | 53 | ~1887 |
| Oscar Larson | Head | — | 53 | ~1887 |
| Harold Larson | Son | — | 21 | ~1919 |
| Stanley Larson | Son | — | 24 | ~1916 |
Census Appearances
1920
Washington, Oregon
Head, age 36
Washington, Oregon · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Carpenter |
| Industry | Shipyards |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Sweden |
| Year of Naturalization | 1913 |
| Birthplace (normalized) | sweden |
1930
Multnomah, Oregon
Head, age 43
Multnomah, Oregon · implied b. ~1887 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Alien |
| Year of Immigration | 1906 |
| Age at First Marriage | 36 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Millwright |
| Industry | Lumber Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Multnomah-County, Oregon
Head, age 53
Multnomah-County, Oregon · implied b. ~1887 — 4 household members
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Naturalization Status | Naturalized |
| Occupation | Driver |
| Industry | Transfer Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Larson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
Oscar Larson
Head · 1940 · age 53 · b. ~1887 · Oregon
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Multnomah-County, Oregon
Open full size
1940 US Federal Census — Multnomah-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03385-00444)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clark Richard Gould | 6 | Step-son | — | Oregon |
| 2 | Mario Marci | 26 | Head | Shipping Clerk | Oregon |
| 3 | Helen Marci | 26 | Wife | Trained Nurse | Oregon |
| 4 | Robert E. Kitchen | 32 | Head | Salesman | Oklahoma |
| 5 | Bernice Kitchen | 28 | Wife | Clerk | Oregon |
| 6 | Oscar Larson THIS PERSON | 53 | Head | Driver | Sweden |
| 7 | Anna Larson | 53 | Wife | Owner | Sweden |
| 8 | Harold Larson | 21 | Son | House Boy | North Dakota |
| 9 | Stanley Larson | 24 | Son | Engine Wiper | North Dakota |
| 10 | Donald Howe | 33 | Head | Waiter | Indiana |
| 11 | Morton G. Christensen | 42 | Head | Banking | Oregon |
| 12 | Vivian Christensen | 29 | Wife | Bookkeeper | Oregon |
| 13 | William Paterson | 33 | Head | Salesman | Canada-English |
| 14 | Marguerite Paterson | 24 | Wife | Clerk | Minnesota |
| 15 | Alice White | 32 | Head | Bookkeeper | Wisconsin |
| 16 | Edward Manson | 71 | Head | — | Illinois |
| 17 | Ellen C. Manson | 71 | Wife | — | Kansas |
| 18 | Peta M. Chapal | 43 | Head | Buyer | Missouri |
| 19 | Jessie B. Failing | 62 | Head | — | Illinois |
| 20 | Willard Failing | 16 | Son | Auditor | Iowa |
| 21 | Mildred M. Passina | 26 | Head | Trained Nurse | Oregon |
| 22 | Helene L. Courson | 46 | Head | Teacher | North Dakota |
| 23 | Don L. Carmichael | 27 | Head | Accountant | Oregon |
| 24 | Fern Carmichael | 25 | Wife | — | Oregon |
| 25 | Katherine Terry | 57 | Head | Stenographer | Canada-English |
| 26 | Ruby V. Richter | 34 | Head | Stenographer | Oregon |
| 27 | Constance Smart | 30 | Head | Advisor | Oregon |
| 28 | Francis E. Kelly | 53 | Head | Salesman | Oregon |
| 29 | Vera E. Kelly | 53 | Wife | Manager | Oregon |
| 30 | Henry J. Mutchler | 61 | Head | Battery Man | Minnesota |
| 31 | Mary M. Mutchler | 62 | Wife | — | Minnesota |
| 32 | Anita Dowlin | 45 | Head | Bookkeeper | Nebraska |
| 33 | Mabel L. Dowlin | 23 | Daughter | Underwriter | Oregon |
| 34 | Mabel P. Halverson | 26 | Head | Clerk | Oregon |
| 35 | Carol L. Kollak | 19 | Lodger | Beautician | Montana |
| 36 | Warren J. Pollack | 30 | Head | Draftsman | Washington |
| 37 | Claudia M. Pollack | 27 | Wife | Stenographer | Washington |
| 38 | Dorothy Ostind | 25 | Head | Stenographer | Minnesota |
| 39 | Jessie Paddock | 25 | Lodger | Trained Nurse | Minnesota |
| 40 | Ruth M. Yoder | 32 | Head | Cashier | Minnesota |
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)