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Oscar Larson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Vernon-County, Wisconsin
Our Model Tree links this Oscar Larson across the 1920, 1930 and 1940 US Censuses in Vernon-County, Wisconsin (XGBoost, ~Confirmed), with identified parents Ole & Oline — first a head (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Head
Born: Wisconsin
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Vernon-County, Wisconsin |
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Vernon |
| Additional Details | |
| Occupation | Truck driver |
| Industry | Oil Products |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Occupation | Truck Driver |
| Township / Ward | Coon Valley Village |
| Est. Birth Year | ~1911 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Millie Larson | Spouse | — | 29 | ~1911 |
| Oscar Larson | Head | — | 29 | ~1911 |
| Karen Larson | Daughter | — | 1 | ~1939 |
Census Appearances
1920
Vernon, Wisconsin
Son, age 8
Vernon, Wisconsin · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Vernon, Wisconsin
Son, age 18
Vernon, Wisconsin · implied b. ~1912 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Age at First Marriage | 18 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Wisconsin |
| Occupation | Farm Laborer |
| Industry | General farming |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Vernon-County, Wisconsin
Head, age 29
Vernon-County, Wisconsin · implied b. ~1911 — 3 household members
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Wisconsin |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Vernon |
| Occupation | Truck driver |
| Industry | Oil Products |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 2 locations, using XGBoost record linkage. Identified parents: father Ole Larson (~0.92 confidence) and mother Oline Larson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ole Larson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Oline Larson
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Larson
Head · 1940 · age 29 · b. ~1911 · Wisconsin
★ 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 — Vernon-County, Wisconsin
Open full size
1940 US Federal Census — Vernon-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04530-00125)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Karen Hansen | 72 | wife | — | Norway |
| 42 | George Nessel | 48 | Head | Carpenter | Norway |
| 43 | Christine Nessel | 45 | wife | — | Wisconsin |
| 44 | Rudolf Skaaland | 44 | Head | Blacksmith | Wisconsin |
| 45 | Molly Skaaland | 30 | wife | — | Wisconsin |
| 46 | Albert Skaaland | 3 | Son | — | Wisconsin |
| 47 | Gena Olsen | 68 | Head | — | Norway |
| 48 | Inga Olsen | 47 | Daughter | — | Wisconsin |
| 49 | Morris Hansen | 36 | Head | Truck Driver | Wisconsin |
| 50 | Joris Hansen | 33 | wife | — | Wisconsin |
| 51 | Duane M. Hansen | 1 | Son | 0 | Wisconsin |
| 52 | Thomas Thomte | 63 | Head | Owner & Operator | Wisconsin |
| 53 | Arin Nothle | 24 | Head | Proprietor | Wisconsin |
| 54 | Gladys Nothle | 26 | wife | — | North Dakota |
| 55 | Haldor Hagen | 56 | Head | Track Worker | Norway |
| 56 | Ralph Colton | 31 | Head | Laborer | Wisconsin |
| 57 | Jennie Colton | 46 | wife | — | Wisconsin |
| 58 | Henry Slakston | 31 | Head | Milk-Driver | Wisconsin |
| 59 | Elnora Slakston | 29 | wife | — | Wisconsin |
| 60 | Elaine Slakston | 3 | Daughter | 0 | Wisconsin |
| 61 | Virginia Slakston | 12 | Daughter | 0 | Wisconsin |
| 62 | Ella Evans | 86 | Head | — | Wisconsin |
| 63 | Sigward Ihle | 69 | Head | Mason | Norway |
| 64 | Elena Hanson | 56 | Housekeeper | Housework | Norway |
| 65 | Edwin Rokkeby | 46 | Head | Buttermaker & Driver | Wisconsin |
| 66 | Lillian Rokkeby | 42 | wife | — | Wisconsin |
| 67 | Karen Berg | 66 | Head | — | Norway |
| 68 | William Anderson | 54 | Head | Laborer | Norway |
| 69 | Olga Anderson | 50 | wife | — | Wisconsin |
| 70 | Olin Anderson | 22 | Son | Laborer | Wisconsin |
| 71 | Hannah Bakkum | 44 | Head | — | Wisconsin |
| 72 | Ella Larson | 59 | Head | — | Wisconsin |
| 73 | Waldo Larson | 27 | Son | Laborer | Wisconsin |
| 74 | Theo Running | 74 | Head | — | Wisconsin |
| 75 | William Running | 44 | Son | Track Worker | Wisconsin |
| 76 | Alton Running | 31 | Son | Proprietor | Wisconsin |
| 77 | Oscar Larson THIS PERSON | 29 | Head | Truck Driver | Wisconsin |
| 78 | Millie Larson | 29 | wife | — | Wisconsin |
| 79 | Karen Larson | 1 | Daughter | 0 | Wisconsin |
| 80 | Ragna Johnson | 50 | Head | — | Wisconsin |
Pedigree Summary
Oscar
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 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)