ON
Oscar Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Isanti-County, Minnesota
Our Model Tree links this Oscar Nelson across the 1920, 1930 and 1940 US Censuses in Isanti-County, Minnesota (XGBoost, ~Confirmed), with identified parents Charlie & Jennie — first a head (b.~1904), then head of a 6-person household.
Age 36
b. ~1904
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Isanti-County, Minnesota |
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Maple Ridge Township |
| 1935 Residence (County) | Isanti |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 6 |
| Income (1939) | 610 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Laborer |
| Township / Ward | Maple Ridge Township |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Oscar | Age | Birth yr |
|---|---|---|---|---|
| Jeanette Nelson | Daughter | — | 8 | ~1932 |
| Oscar Nelson | Head | — | 36 | ~1904 |
| Leroy Nelson | Son | — | 2 | ~1938 |
| Melvin Nelson | Son | — | 12 | ~1928 |
| Richard Nelson | Son | — | 6 | ~1934 |
| Mable Nelson | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Isanti, Minnesota
Son, age 18
Isanti, Minnesota · implied b. ~1902 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Isanti, Minnesota
Head, age 26
Isanti, Minnesota · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Minnesota |
| Age at First Marriage | 23 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | Dairy Farm |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| 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 — 6 household members
| Surname | Nelson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | Maple Ridge Township |
| 1935 Residence (County) | Isanti |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | PW |
| Hours Worked | 6 |
| Income (1939) | 610 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 Nelson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charlie Nelson (~0.92 confidence) and mother Jennie Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charlie Nelson
b. ~1855
Source father
● Household
· direct · ~0.92
Mother
Jennie Nelson
b. ~1859
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Nelson
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
40 people indexed on this census page (nara:1940:m-t0627-01927-01066)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald Nelson | 12 | Son | — | Minnesota |
| 2 | Jennie Nelson | 71 | Head | — | Sweden |
| 3 | Henry Nelson | 43 | Son | Stone Mason | Wisconsin |
| 4 | Oscar Nelson THIS PERSON | 36 | Head | Laborer | Minnesota |
| 5 | Mable Nelson | 33 | Wife | — | Minnesota |
| 6 | Melvin Nelson | 12 | Son | — | Minnesota |
| 7 | Jeanette Nelson | 8 | Daughter | — | Minnesota |
| 8 | Richard Nelson | 6 | Son | — | Minnesota |
| 9 | Leroy Nelson | 2 | Son | — | Minnesota |
| 10 | John Nelson | 72 | Head | Farmer | Sweden |
| 11 | Clara Nelson | 76 | Wife | — | Sweden |
| 12 | Edgar Nelson | 37 | Head | Farmer | Minnesota |
| 13 | Aldia Nelson | 23 | Wife | — | Minnesota |
| 14 | Joyce Nelson | 5 | Daughter | — | Minnesota |
| 15 | Mabrette Nelson | 3 | Daughter | — | Minnesota |
| 16 | Willard Nelson | 45 | Head | Farmer | Minnesota |
| 17 | Olga Nelson | 33 | Wife | — | Minnesota |
| 18 | Beverly Nelson | 7 | Daughter | — | Minnesota |
| 19 | Charley Vickstrom | 57 | Head | Farmer | Minnesota |
| 20 | Maggie Vickstrom | 38 | Wife | — | No Dakota |
| 21 | Alice Vickstrom | 17 | Daughter | Typist | No Dakota |
| 22 | Gordon Vickstrom | 16 | Son | Farm Worker | No Dakota |
| 23 | Edith Vickstrom | 14 | Daughter | — | No Dakota |
| 24 | Elmer Vickstrom | 12 | Son | — | No Dakota |
| 25 | Allegra Vickstrom | 8 | Daughter | — | No Dakota |
| 26 | Richard Vickstrom | 45 | Brother | Farm Laborer | Minnesota |
| 27 | William Parker | 27 | Head | Farmer | New Hampshire |
| 28 | Irma Parker | 24 | Wife | — | Illinois |
| 29 | Daniel Parker | 15 | Son | — | So Dakota |
| 30 | William Parker | 11 | Son | — | So Dakota |
| 31 | Harley Parker | 6 | Son | — | So Dakota |
| 32 | Henry Parker | 3 | Son | — | Minnesota |
| 33 | Lawrence Parker | 1 | Son | — | Minnesota |
| 34 | Oscar Nelson | 53 | Head | Farmer | Minnesota |
| 35 | Clara Nelson | 57 | Wife | — | Minnesota |
| 36 | Pearl Nelson | 23 | Daughter | Teacher | Minnesota |
| 37 | Gordon Nelson | 19 | Son | Farm Laborer | Minnesota |
| 38 | Kenneth Kolby | 36 | Head | Farmer | Minnesota |
| 39 | Irene Kolby | 34 | Wife | — | Minnesota |
| 40 | Betty Kolby | 11 | Daughter | — | 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)