ON
Oscar Nelson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this Oscar Nelson across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents John & Janna — first a head (b.~1902), then head of a 3-person household.
Age 38
b. ~1902
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Nelson |
| Given Name | Oscar F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Teller |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2100 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Teller |
| Township / Ward | Denver |
| Est. Birth Year | ~1902 |
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 |
|---|---|---|---|---|
| Shirley Nelson | Daughter | — | 10 | ~1930 |
| Oscar Nelson | Head | — | 38 | ~1902 |
| Ruby Nelson | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Denver, Colorado
Son, age 18
Denver, Colorado · implied b. ~1902 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Oscar F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Window Trimmer |
| Industry | Department Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Head, age 28
Denver, Colorado · implied b. ~1902 — 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 | 28 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 25 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | teller |
| Industry | bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | $38 |
| Radio Set | R |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Head, age 38
Denver-County, Colorado · implied b. ~1902 — 3 household members
| Surname | Nelson |
| Given Name | Oscar F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver |
| 1935 Residence (County) | Denver |
| Occupation | Teller |
| Industry | Bank |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2100 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 John Nelson (~0.92 confidence) and mother Janna Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Nelson
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Janna Nelson
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Nelson
Head · 1940 · age 38 · b. ~1902 · Colorado
★ 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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00487-00460)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carol D. Anderson | 5 | Daughter | — | Kansas |
| 42 | Russell T. Anderson | 39 | Head | Proprietor | Nebraska |
| 43 | Marie Anderson | 28 | Wife | — | Iowa |
| 44 | Axel W. Sandberg | 51 | Head | Proprietor | Pennsylvania |
| 45 | Mabel D. Sandberg | 41 | Wife | — | Colorado |
| 46 | Delores Sandberg | 16 | Daughter | — | Colorado |
| 47 | Shirley Sandberg | 13 | Daughter | — | Colorado |
| 48 | Oscar F. Nelson THIS PERSON | 38 | Head | Teller | Colorado |
| 49 | Ruby A. Nelson | 37 | Wife | — | Iowa |
| 50 | Shirley J. Nelson | 10 | Daughter | — | Colorado |
| 51 | Rodney Snyder | 45 | Head | Salesman | Colorado |
| 52 | Ella M. Snyder | 50 | Wife | Teacher | Pennsylvania |
| 53 | Thomas J. Leahy | 60 | Head | Engineer Inspector | Colorado |
| 54 | Agnes J. Leahy | 59 | Wife | — | Colorado |
| 55 | Florence M. Leahy | 20 | Daughter | Stenographer | Colorado |
| 56 | Katherine Leahy | 62 | Sister | Teacher | New Mexico |
| 57 | Rose M. Hagus | 64 | Lodger | — | Missouri |
| 58 | William J. Pedrey | 80 | Head | — | England |
| 59 | Margaret M. Pedrey | 79 | Wife | — | Canada |
| 60 | Frances Pedrey | 51 | Daughter | — | Kansas |
| 61 | Mary C. Pedrey | 49 | Daughter | Teacher | Colorado |
| 62 | Walter J. Kreuthmeier | 37 | Head | Shipping Clerk | Illinois |
| 63 | Mildred C. Kreuthmeier | 34 | Wife | Saleslady | Colorado |
| 64 | Donald W. Kreuthmeier | 14 | Son | — | Colorado |
| 65 | Eugene Farkas | 43 | Head | — | Hungary |
| 66 | Gessie Farkas | 43 | Wife | — | Hungary |
| 67 | Elizabeth Hochstadt | 19 | Daughter | — | Romania |
| 68 | William H. Hochstadt | 28 | Son-in-law | Proprietor | Romania |
| 69 | Jordan Hochstadt | 4 | Son | — | Colorado |
| 70 | Genevieve Apodaca | 20 | Maid | Maid | Colorado |
| 71 | Roderick M. Smith | 46 | Head | Mail Man | Colorado |
| 72 | Nellie F. Smith | 45 | Wife | — | N. Dakota |
| 73 | Jean K. Smith | 5 | Daughter | — | Colorado |
| 74 | Ruth V. Johns | 29 | Daughter | — | Colorado |
| 75 | Theodore Johns | 28 | Son-in-law | Salesman | Colorado |
| 76 | Samuel Kris | 34 | Head | Proprietor | Russia |
| 77 | Anna R. Kris | 35 | Wife | — | California |
| 78 | Dorothy L. Kris | 5 | Daughter | — | Colorado |
| 79 | Susan A. Kris | 2 | Daughter | — | Colorado |
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)