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Oscar Larson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Monona, Iowa
Our Model Tree links this Oscar Larson across the 1900, 1910 and 1920 US Censuses in Monona, Iowa (XGBoost, ~Confirmed), with identified parents Hans & Anna — first a son (b.~1901), then head of a 5-person household.
Age 19
b. ~1901
Male
Son
Born: Iowa
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Monona, Iowa |
| Surname | Larson |
| Given Name | Oscar L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Soldier 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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Oscar Larson | Son | — | 19 | ~1901 |
| Harold Larson | Son | — | 15 | ~1905 |
| Hans Larson | Head | — | 50 | ~1870 |
| Anna Larson | Spouse | — | 37 | ~1883 |
| Olga Larson | Daughter | — | 18 | ~1902 |
Census Appearances
1900
Monona, Iowa
Son, age 1
Monona, Iowa · implied b. ~1899 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Feb |
| Birth Year | 1899 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Monona, Iowa
Son, age 10
Monona, Iowa · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Monona, Iowa
Son, age 19
Monona, Iowa · implied b. ~1901 — 5 household members
| Surname | Larson |
| Given Name | Oscar L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 (1900, 1910 and 1920) in Monona, Iowa, using XGBoost record linkage. Identified parents: father Hans Larson (~0.92 confidence) and mother Anna Larson (~0.92 confidence) and mother Anna Larson (~0.92 confidence) and mother Annie Larson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hans Larson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Anna Larson
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Anna Larson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Annie Larson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Larson
Son · 1920 · age 19 · b. ~1901 · Iowa
★ You are viewing this record
Sibling
Olga Larson
Sibling · 1920 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Larson
Sibling · 1920 · age 15
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
1920 US Federal Census — Monona, Iowa
Open full size
1920 US Federal Census — Monona, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu503unit:0643)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Emal Gallup | 58 | Head | Farmer | Norway |
| 52 | Bertha Gallup | 54 | Wife | — | Norway |
| 53 | Edward Gallup | 26 | Son | Laborer | Iowa |
| 54 | Annie Gallup | 19 | Daughter | — | Iowa |
| 55 | Bennett Gallup | 10 | Son | — | Iowa |
| 56 | Elsa L Gallup | 8 | Daughter | — | Iowa |
| 57 | Soren Severson | 49 | Head | Farmer | Wisconsin |
| 58 | Julia Severson | 52 | Wife | — | Wisconsin |
| 59 | Soren B Severson | 23 | Son | Laborer | Iowa |
| 60 | Anna S Severson | 18 | Daughter | Teacher | South Dakota |
| 61 | Raymond Severson | 12 | Son | — | South Dakota |
| 62 | Emeline H Severson | 10 | Daughter | — | South Dakota |
| 63 | Elvira M Severson | 4 | Daughter | — | Iowa |
| 64 | Christian Iverson | 67 | Head | Farmer | Norway |
| 65 | Inge Iverson | 38 | Daughter | — | Iowa |
| 66 | Clarence Iverson | 26 | Son | Laborer | Iowa |
| 67 | Ole K Bye | 65 | Head | Farmer | Norway |
| 68 | Mary Bye | 65 | Wife | — | Norway |
| 69 | Isadore Bye | 26 | Son | Laborer | Iowa |
| 70 | Hellen Bye | 20 | Daughter | — | Iowa |
| 71 | Trygve Bye | 18 | Son | Laborer | Iowa |
| 72 | Gilbert Bye | 15 | Son | — | Iowa |
| 73 | Gunda Bye | 12 | Daughter | — | Iowa |
| 74 | Carl G Lee | 35 | Head | Farmer | Iowa |
| 75 | Gladys S Lee | 26 | Wife | — | Iowa |
| 76 | Arthur M Lee | 4 | Son | — | Iowa |
| 77 | John C Lee | 1 | Son | — | Iowa |
| 78 | Theodore Lee | 17 | Brother | Laborer | Iowa |
| 79 | Oscar Wingate | 33 | Head | Farmer | Iowa |
| 80 | Nettie D Wingate | 31 | Wife | — | Iowa |
| 81 | Burton D Wingate | 11 | Son | — | Iowa |
| 82 | Alice L Wingate | 7 | Daughter | — | Iowa |
| 83 | Gladys M Wingate | 5 | Daughter | — | Iowa |
| 84 | Svea Adele Wingate | 2 | Daughter | — | Iowa |
| 85 | Lewis Thoreson | 39 | Head | Farmer | Norway |
| 86 | Magnia S Thoreson | 30 | Wife | — | Iowa |
| 87 | Clara G Thoreson | 7 | Daughter | — | Iowa |
| 88 | Mabel L Thoreson | 6 | Daughter | — | Iowa |
| 89 | Andrew J Muller | 77 | Head | Farmer | Norway |
| 90 | Ada C Muller | 36 | Wife | — | Iowa |
| 91 | Louise S Muller | 6 | Daughter | — | Iowa |
| 92 | Lars And W Muller | 4 | Son | — | Iowa |
| 93 | Isaac Muller | 18 | Brother | Laborer | Norway |
| 94 | Hans Larson | 50 | Head | Farmer | Norway |
| 95 | Anna G Larson | 37 | Wife | — | Norway |
| 96 | Oscar L Larson THIS PERSON | 19 | Son | Laborer | Iowa |
| 97 | Olga G Larson | 18 | Daughter | — | Iowa |
| 98 | Harold Larson | 15 | Son | — | Iowa |
| 99 | Casper Gunderson | 48 | Head | Farmer | Iowa |
| 100 | Annie Gunderson | 36 | Wife | — | Iowa |
Pedigree Summary
Oscar + 2 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 1920 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)