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Oscar Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-Haven-County, Connecticut
Our Model Tree links this Oscar Larson across the 1910, 1920, 1930 and 1940 US Censuses in New-Haven-County, Connecticut (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 5-person household.
Age 61
b. ~1879
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-Haven-County, Connecticut |
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Oxford Town |
| 1935 Residence (County) | New Haven |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Press operator |
| Industry | Factory |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1040 |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Press Operator |
| Township / Ward | Oxford Town |
| Est. Birth Year | ~1879 |
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 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Milton Larson | Son | — | 20 | ~1920 |
| June Larson | Daughter | — | 17 | ~1923 |
| Ruth Larson | Spouse | — | 54 | ~1886 |
| Robert Griswold | Other | — | 22 | ~1918 |
| Oscar Larson | Head | — | 61 | ~1879 |
Census Appearances
1910
New Haven, …
Head, age 31
New Haven, Connecticut · implied b. ~1879 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar A |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Sweden |
| Years Married | 3 |
| Year of Immigration | 1902 |
| Naturalization Status | Alien |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Moulder |
| Industry | Iron Foundry |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1920
Hartford, Connecticut
Head, age 41
Hartford, Connecticut · implied b. ~1879 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1902 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Toolmaker |
| Industry | Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Birth Country | Sweden |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | sweden |
1930
New Haven, …
Head, age 51
New Haven, Connecticut · implied b. ~1879 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Oscar E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1906 |
| Age at First Marriage | 27 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | President |
| Industry | manf co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
New-Haven-County, Connecticut
Head, age 61
New-Haven-County, Connecticut · implied b. ~1879 — 5 household members
| Surname | Larson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Oxford Town |
| 1935 Residence (County) | New Haven |
| Naturalization Status | Naturalized |
| Occupation | Press operator |
| Industry | Factory |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1040 |
| Highest Grade | No 0 |
| 1935 Residence | Same House |
| 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.
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This person
Anchor record
Oscar Larson
Head · 1940 · age 61 · b. ~1879 · Connecticut
★ 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 — New-Haven-County, Connecticut
Open full size
1940 US Federal Census — New-Haven-County, Connecticut
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00518-00764)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leonard P. Crofut | 25 | Head | Laborer | Connecticut |
| 2 | Ella E. Crofut | 24 | Wife | — | Connecticut |
| 3 | Leona R. Crofut | 4 | Daughter | — | Connecticut |
| 4 | Sylvia A. Crofut | 0 | Daughter | — | Connecticut |
| 5 | James Gorin | 61 | Lodger | Teamster | Canada-French |
| 6 | Albert Knapp | 58 | Head | Laborer | Connecticut |
| 7 | Charlotte Knapp | 48 | Wife | — | Connecticut |
| 8 | Gloria Michaud | 15 | Step-daughter | — | Maine |
| 9 | Helen Michaud | 12 | Step-daughter | — | Maine |
| 10 | Francis Michaud | 11 | Step-son | — | Maine |
| 11 | William Maher | 32 | Head | Foreman | Connecticut |
| 12 | Regina Maher | 30 | Wife | — | Connecticut |
| 13 | Clifford Parsons | 24 | Head | Manager | Connecticut |
| 14 | Jeanette Parsons | 22 | Wife | — | Connecticut |
| 15 | Oscar Larson THIS PERSON | 61 | Head | Press Operator | Sweden |
| 16 | Ruth Larson | 54 | Wife | — | Sweden |
| 17 | Milton Larson | 20 | Son | Plumber | Connecticut |
| 18 | June Larson | 17 | Daughter | — | Connecticut |
| 19 | Robert Griswold | 22 | Lodger | Clerk | Connecticut |
| 20 | Pauline Martin | 51 | Head | — | Sweden |
| 21 | Herbert Martin | 15 | Son | — | New York |
| 22 | Alexander Mikulich | 50 | Head | Owner | Russia |
| 23 | Stephania Mikulich | 45 | Wife | — | Russia |
| 24 | Vera Mikulich | 25 | Daughter | Teacher | Connecticut |
| 25 | Valentine Mikulich | 23 | Daughter | Teacher | Connecticut |
| 26 | Alexander Mikulich | 21 | Son | — | Connecticut |
| 27 | Anne Mikulich | 17 | Daughter | — | Connecticut |
| 28 | Nadia Mikulich | 14 | Daughter | — | Connecticut |
| 29 | Lydia Mikulich | 14 | Daughter | — | Connecticut |
| 30 | William Tuckow | 54 | Head | Farm Labor | Connecticut |
| 31 | Beeda Tuckow | 46 | Wife | — | Connecticut |
| 32 | Sherman Tuckow | 55 | Brother | — | Connecticut |
| 33 | Mildred Seven | 10 | Lodger | — | Connecticut |
| 34 | Wesley S. Smith | 30 | Head | Mechanic | Connecticut |
| 35 | Mary Smith | 23 | Wife | — | Connecticut |
| 36 | Shirley Ann Smith | 0 | Daughter | — | Connecticut |
| 37 | Thomas Flannery | 55 | Head | Carpenter | Connecticut |
| 38 | Myrtle Flannery | 52 | Wife | — | Vermont |
| 39 | James Flannery | 79 | Father | — | Ireland |
| 40 | Helen Movanich | 44 | Head | Owner | Lithuania |
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)