OC
Oscar Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Isanti-County, Minnesota
Our Model Tree links this Oscar Carlson across the 1910, 1920, 1930 and 1940 US Censuses in Isanti-County, Minnesota (XGBoost, ~Confirmed), with identified parents Nels & Annie — first a head (b.~1904), then head of a 5-person household.
Age 36
b. ~1904
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Isanti-County, Minnesota |
| Surname | Carlson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Isanti |
| Additional Details | |
| Occupation | Isanti County |
| Industry | Register of Deeds |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 2400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Isanti County |
| Township / Ward | Cambridge |
| Est. Birth Year | ~1904 |
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 |
|---|---|---|---|---|
| Karin Carlson | Daughter | — | 1 | ~1939 |
| Stanton Carlson | Son | — | 3 | ~1937 |
| Oscar Carlson | Head | — | 36 | ~1904 |
| Lenore Carlson | Spouse | — | 34 | ~1906 |
| Paul Carlson | Son | — | ~1940 |
Census Appearances
1910
Isanti, Minnesota
Son, age 6
Isanti, Minnesota · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1920
Isanti, Minnesota
Son, age 16
Isanti, Minnesota · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Isanti, Minnesota
Son, age 26
Isanti, Minnesota · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Isanti-County, Minnesota
Head, age 36
Isanti-County, Minnesota · implied b. ~1904 — 5 household members
| Surname | Carlson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Isanti |
| Occupation | Isanti County |
| Industry | Register of Deeds |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 2400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Minnesota |
| 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 Carlson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nels Carlson (~0.92 confidence) and mother Annie Carlson (~0.92 confidence) and mother Carrie Carlson (~0.92 confidence) and mother Kari Carlson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nels Carlson
b. ~1850
Source father
● Household
· direct · ~0.92
Mother
Annie Carlson
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Carrie Carlson
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Kari Carlson
b. ~1862
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Carlson
Head · 1940 · age 36 · b. ~1904 · 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 — Isanti-County, Minnesota
Open full size
1940 US Federal Census — Isanti-County, Minnesota
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01927-00953)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wesley Runnean | Runneam | 30 | Head | Truck Driver | Louisiana |
| 42 | Gayle Runnean | Runneam | 21 | Wife | 7 | So Dakota |
| 43 | Arid | Fred Runnean | Runneam | 0 | Son | — | Minnesota |
| 44 | Eric Erickson | 71 | Head | Operator | Sweden |
| 45 | Edith Erickson | 52 | Wife | — | Minnesota |
| 46 | Bernice Erickson | 23 | Daughter | Truck Driver | Minnesota |
| 47 | Bennett Erickson | 21 | Son | Truck Driver | Minnesota |
| 48 | Wilbur Rogers | 37 | Head | Surveyor | Minnesota |
| 49 | Emeline Rogers | 40 | Wife | — | Missouri |
| 50 | Wilbur Jr Rogers | 17 | Son | — | Minnesota |
| 51 | Blaine A Loren | 31 | Head | Attendant | Minnesota |
| 52 | Gladys Loren | 31 | Wife | — | Minnesota |
| 53 | Olin Erickson | 81 | Head | — | Iowa |
| 54 | Bessie Erickson | 61 | Daughter | — | Iowa |
| 55 | Martina Erickson | 47 | Daughter | Music Teacher | Iowa |
| 56 | Richard Idstrom | 38 | Head | Area Engineer | Iowa |
| 57 | Anna Idstrom | 41 | Wife | — | Iowa |
| 58 | John Idstrom | 10 | Son | — | Minnesota |
| 59 | Paul Idstrom | 8 | Son | — | Minnesota |
| 60 | Dorothy Idstrom | 4 | Daughter | — | Minnesota |
| 61 | Delores Idstrom | 3 | Daughter | — | Minnesota |
| 62 | Sandra Idstrom | 1 | Daughter | — | Minnesota |
| 63 | Reynold Stake | 40 | Head | Operator | Minnesota |
| 64 | Dagmar Stake | 33 | Wife | — | Minnesota |
| 65 | Barbara Stake | 9 | Daughter | — | Minnesota |
| 66 | William Stake | 7 | Son | — | Minnesota |
| 67 | Herbert Fluge | 23 | Roomer | Manager | Wisconsin |
| 68 | George D Clark | 32 | Head | Dentist | Minnesota |
| 69 | Meta Clark | 31 | Wife | — | Minnesota |
| 70 | Ernest Carlson | 32 | Head | Mechanic | Minnesota |
| 71 | Bernelda Carlson | 27 | Wife | — | Minnesota |
| 72 | Ronald Carlson | 5 | Son | — | Minnesota |
| 73 | Oscar Carlson THIS PERSON | 36 | Head | Isanti County | Minnesota |
| 74 | Lenore Carlson | 34 | Wife | — | Minnesota |
| 75 | Stanton Carlson | 3 | Son | — | Minnesota |
| 76 | Karin Carlson | 1 | Daughter | — | Minnesota |
| 77 | Paul Carlson | 0 | Son | — | Minnesota |
| 78 | Clarence Olsen | 27 | Head | Music Teacher | Michigan |
| 79 | Sylvia Olsen | 23 | Wife | — | Maine |
Pedigree Summary
Oscar
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 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)