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Oscar Larson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Todd-County, Minnesota
Our Model Tree links this Oscar Larson across the 1920, 1930 and 1940 US Censuses in Todd-County, Minnesota (XGBoost, ~Confirmed), with identified parents Peter & Julia — first a head (b.~1901), then head of a 3-person household.
Age 39
b. ~1901
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Todd-County, Minnesota |
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Iona Township |
| 1935 Residence (County) | Todd |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 84 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Farmer |
| Township / Ward | Iona Township |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Oscar Larson | Head | — | 39 | ~1901 |
| Gladys Larson | Spouse | — | 38 | ~1902 |
| Duane Larson | Son | — | 14 | ~1926 |
Census Appearances
1920
Todd, Minnesota
Son, age 18
Todd, Minnesota · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Todd, Minnesota
Head, age 28
Todd, Minnesota · implied b. ~1902 — 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 | 28 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 23 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Todd-County, Minnesota
Head, age 39
Todd-County, Minnesota · implied b. ~1901 — 3 household members
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Iona Township |
| 1935 Residence (County) | Todd |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 84 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Peter Larson (~0.92 confidence) and mother Julia Larson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Larson
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Julia Larson
b. ~1861
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Larson
Head · 1940 · age 39 · b. ~1901 · 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 — Todd-County, Minnesota
Open full size
1940 US Federal Census — Todd-County, Minnesota
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01964-00349)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Alois J. Kaluza | 24 | Head | Farmer | Minnesota |
| 2 | Robert T. Kaluza | 22 | Brother | Farmer | Minnesota |
| 3 | Ladislaw Marosek | 49 | Head | Farmer | Illinois |
| 4 | Emma Marosek | 74 | Mother | — | Bohemia |
| 5 | John E. Gorbleck | 37 | Head | Farmer | Minnesota |
| 6 | Theodore X. Kaluza | 30 | Head | Farmer | Minnesota |
| 7 | Lavida Kaluza | 28 | Wife | — | Minnesota |
| 8 | Johann Kaluza | 2 | Daughter | — | Minnesota |
| 9 | Retia Kaluza | 0 | Daughter | — | Minnesota |
| 10 | William Kulick | 31 | Head | Farmer | Minnesota |
| 11 | Ruth Kulick | 26 | Wife | — | Minnesota |
| 12 | Edward Friauf | 49 | Head | Farmer | Minnesota |
| 13 | Martha Karrow | 50 | Hired Hand | Housewife | Minnesota |
| 14 | Michal C. Balzer | 52 | Laborer | Laborer | Germany |
| 15 | Joseph Rising | 69 | Head | Farmer | Sweden |
| 16 | Ellen Rising | 59 | Wife | — | Norway |
| 17 | Joseph W. Rising | 32 | Son | Farmer | Minnesota |
| 18 | Elmer Swedal | 26 | Head | School Bus Driver | Minnesota |
| 19 | Hazel Swedal | 21 | Wife | — | Minnesota |
| 20 | Oscar Larson THIS PERSON | 39 | Head | Farmer | Minnesota |
| 21 | Gladys P. Larson | 38 | Wife | — | Iowa |
| 22 | Duane G. Larson | 14 | Son | — | Minnesota |
| 23 | Herbert E. Fuller | 37 | Head | Farmer | Iowa |
| 24 | Mabel Fuller | 35 | Wife | — | Minnesota |
| 25 | Donald G. Fuller | 15 | Son | — | Minnesota |
| 26 | Henry Legard | 45 | Head | Farmer | Minnesota |
| 27 | Richard Legard | 38 | Brother | Farmer | Minnesota |
| 28 | Bernard Birkholz | 41 | Head | Farmer | Minnesota |
| 29 | Eli E. Kaluza | 32 | Head | Farmer | Minnesota |
| 30 | Hattie H. Kaluza | 25 | Wife | — | Minnesota |
| 31 | Dorothy K. Kaluza | 8 | Daughter | — | Minnesota |
| 32 | Theresa B. Kaluza | 3 | Daughter | — | Minnesota |
| 33 | Donald J. Kaluza | 2 | Son | — | Minnesota |
| 34 | William Brown | 53 | Head | Farmer | Pennsylvania |
| 35 | Addie Brown | 48 | Wife | — | Minnesota |
| 36 | Joseph J. Baker | 50 | Head | Farmer | Czechoslovakia |
| 37 | Mary M. Baker | 44 | Wife | — | Illinois |
| 38 | Mayme T. Baker | 16 | Daughter | — | Minnesota |
| 39 | Joseph B. Baker | 15 | Son | Farmer | Minnesota |
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)