OL
Oscar Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Louis-County, Minnesota
Our Model Tree links this Oscar Larson across the 1910, 1920, 1930 and 1940 US Censuses in St.-Louis-County, Minnesota (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 6-person household.
Age 56
b. ~1884
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Louis-County, Minnesota |
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Owens Township |
| 1935 Residence (County) | St. Louis |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | laborer |
| Industry | road work |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Laborer |
| Township / Ward | Owens Township |
| Est. Birth Year | ~1884 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| Elma Larson | Spouse | — | 52 | ~1888 |
| Roy Larson | Son | — | 14 | ~1926 |
| Loretta Larson | Daughter | — | 1 | ~1939 |
| Florence Larson | Daughter | — | 24 | ~1916 |
| Fern Larson | Daughter | — | 15 | ~1925 |
| Oscar Larson | Head | — | 56 | ~1884 |
Census Appearances
1910
Ramsey, Minnesota
Other, age 23
Ramsey, Minnesota · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Brother-in-law |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1908 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Laborer |
| Industry | House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1920
St Louis, …
Other, age 34
St Louis, Minnesota · implied b. ~1886 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Sweden |
| Year of Immigration | 1910 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
St Louis, …
Head, age 46
St Louis, Minnesota · implied b. ~1884 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1911 |
| Age at First Marriage | 36 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Woodsman |
| Industry | Logging Camp |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
St.-Louis-County, Minnesota
Head, age 56
St.-Louis-County, Minnesota · implied b. ~1884 — 6 household members
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Owens Township |
| 1935 Residence (County) | St. Louis |
| Naturalization Status | Naturalized |
| Occupation | laborer |
| Industry | road work |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| 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 4 US Census years (1910, 1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Oscar Larson
Head · 1940 · age 56 · b. ~1884 · Minnesota
★ 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 — St.-Louis-County, Minnesota
Open full size
1940 US Federal Census — St.-Louis-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01957-00033)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lorraine Holato | 16 | Daughter | — | Minnesota |
| 42 | Marianne Holato | 14 | Daughter | — | Minnesota |
| 43 | Einar (Ab) Wik | 41 | Head | Wood Cutter | Sweden |
| 44 | Jennie A Wik | 46 | Wife | — | Sweden |
| 45 | Nels (Ab) Wik | 20 | Son | New Worker | Sweden |
| 46 | Ruth Wik | 18 | Daughter | — | Sweden |
| 47 | Anna Lisa Wik | 16 | Daughter | — | Sweden |
| 48 | Maybritt Wik | 1 | Daughter | — | Minnesota |
| 49 | Ida Magnuson | 24 | Head | — | Minnesota |
| 50 | Joseph Magnuson | 21 | Brother | New Worker | Minnesota |
| 51 | Fred Larson | 75 | Head | — | Sweden |
| 52 | John Olson | 77 | Head | — | Sweden |
| 53 | Martha Olson | 71 | Wife | — | Sweden |
| 54 | Gottfried Carlson | 48 | Head | Logger | Sweden |
| 55 | Beda Sophie Carlson | 51 | Wife | — | Sweden |
| 56 | Francis J Carlson | 17 | Daughter | — | Minnesota |
| 57 | Helen L Carlson | 15 | Daughter | — | Minnesota |
| 58 | Robert J Carlson | 8 | Son | — | Minnesota |
| 59 | Lars M Carlson | 42 | Brother | Laborer | Sweden |
| 60 | George Brintz | 53 | Head | Truck Driver | Minnesota |
| 61 | Anna Brintz | 32 | Wife | — | Minnesota |
| 62 | Marianne Brintz | 9 | Daughter | — | Illinois |
| 63 | Loretta Brintz | 8 | Daughter | — | Minnesota |
| 64 | Ronald Brintz | 6 | Son | — | Minnesota |
| 65 | Thomas Brintz | 2 | Son | — | Minnesota |
| 66 | Ralph Petrow | 27 | Head | Bus Driver | Minnesota |
| 67 | Augusta Carlson | 61 | Head | — | Sweden |
| 68 | Leo Carlson | 33 | Son | Truck Driver | Minnesota |
| 69 | Maxine Carlson | 14 | Grand-daughter | — | Minnesota |
| 70 | John B Carlson | 63 | Head | — | Finland |
| 71 | Oscar Larson THIS PERSON | 56 | Head | Laborer | Sweden |
| 72 | Elma Larson | 52 | Wife | — | Michigan |
| 73 | Florence Larson | 24 | Daughter | — | Minnesota |
| 74 | Fern Larson | 15 | Daughter | — | Minnesota |
| 75 | Roy Larson | 14 | Son | — | Minnesota |
| 76 | Loretta Larson | 1 | Daughter | — | Minnesota |
| 77 | Clarence Johnson | 39 | Head | Farmer | Minnesota |
| 78 | Florence Johnson | 37 | Wife | — | Minnesota |
| 79 | Gerald Johnson | 15 | Son | — | Minnesota |
| 80 | Norman Johnson | 11 | Son | — | 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)