OT
Oscar Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Story-County, Iowa
Our Model Tree links this Oscar Thompson across the 1920, 1930 and 1940 US Censuses in Story-County, Iowa (XGBoost, ~Confirmed), with identified parents Tom & Tom — first a head (b.~1900), then head of a 3-person household.
Age 40
b. ~1900
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Story-County, Iowa |
| Surname | Thompson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | McCallsburg Town |
| 1935 Residence (County) | Story |
| Additional Details | |
| Occupation | Laborer |
| Industry | odd jobs |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 150 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Mccallsburg Town |
| Est. Birth Year | ~1900 |
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 |
|---|---|---|---|---|
| Richard Thompson | Son | — | 3 | ~1937 |
| Lottie Thompson | Spouse | — | 23 | ~1917 |
| Oscar Thompson | Head | — | 40 | ~1900 |
Census Appearances
1920
Story, Iowa
Son, age 22
Story, Iowa · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Oscar |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | farm laborer |
| Industry | general farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Story, Iowa
Son, age 33
Story, Iowa · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Oscar L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Iowa |
| Age at First Marriage | W |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | General farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Story-County, Iowa
Head, age 40
Story-County, Iowa · implied b. ~1900 — 3 household members
| Surname | Thompson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | McCallsburg Town |
| 1935 Residence (County) | Story |
| Occupation | Laborer |
| Industry | odd jobs |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 150 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Tom Thompson (~0.92 confidence) and father Tom Thompson (~0.92 confidence) and mother Christina Thompson (~0.92 confidence) and mother Christina Thompson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Tom Thompson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Tom Thompson
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Christina Thompson
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Christina Thompson
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Thompson
Head · 1940 · age 40 · b. ~1900 · Iowa
★ 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 — Story-County, Iowa
Open full size
1940 US Federal Census — Story-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01206-00963)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fannie Graves | 66 | Head | Grade Teacher | Illinois |
| 42 | Matilda Meyers | 21 | Lodger | Teacher | Iowa |
| 43 | Martha Johnson | 23 | Lodger | Teacher | Iowa |
| 44 | Walter H. Reid | 67 | Head | Merchant | Iowa |
| 45 | Ruth Reid | 65 | Wife | — | Indiana |
| 46 | Pearl Sanders | 93 | Mother-in-law | — | Ohio |
| 47 | William Collins | 30 | Head | Manual Tr. Teacher | Iowa |
| 48 | Katherine Collins | 23 | Wife | — | Iowa |
| 49 | Barbara Collins | 3 | Daughter | — | Iowa |
| 50 | Andy Thompson | 47 | Head | Insurance Agent | Iowa |
| 51 | Mable Thompson | 47 | Wife | — | Iowa |
| 52 | Louis Bjelde | 77 | Head | — | Norway |
| 53 | Sarah Bjelde | 69 | Wife | — | Iowa |
| 54 | Anna Nelson | 56 | Head | — | Iowa |
| 55 | Ralph Butler | 37 | Head | Laborer | Iowa |
| 56 | Ilo Butler | 33 | Wife | Stenographer | Iowa |
| 57 | Kenton Butler | 8 | Son | — | Iowa |
| 58 | Vincent Butler | 4 | Son | — | Iowa |
| 59 | Orville Neilson | 21 | Lodger | 7Th Grade Teacher | Iowa |
| 60 | Oscar Thompson THIS PERSON | 40 | Head | Laborer | Iowa |
| 61 | Lottie Thompson | 23 | Wife | — | Iowa |
| 62 | Richard Thompson | 3 | Son | — | Iowa |
| 63 | George W. Smith | 35 | Head | — | Iowa |
| 64 | Celia L. Smith | 62 | Wife | Weaver | Iowa |
| 65 | George Merkel | 37 | Head | Odd Laborer | New York |
| 66 | Alma Merkel | 30 | Wife | — | Canada |
| 67 | Raymond Merkel | 10 | Son | — | Iowa |
| 68 | Doris Merkel | 9 | Daughter | — | Iowa |
| 69 | Virgie Merkel | 7 | Daughter | — | Iowa |
| 70 | Charles Merkel | 5 | Son | — | Iowa |
| 71 | Gladys Merkel | 4 | Daughter | — | Iowa |
| 72 | Pauline Merkel | 3 | Daughter | — | Iowa |
| 73 | Georgia Merkel | 1 | Daughter | — | Iowa |
| 74 | Rasmus Larson | 68 | Head | — | Norway |
| 75 | Tom Thompson | 67 | Lodger | — | Norway |
| 76 | Melvin Cockerham | 65 | Head | — | North Carolina |
| 77 | Lura A. Cockerham | 63 | Wife | — | North Carolina |
| 78 | Henry T. Christianson | 66 | Head | Agent & Operator | New York |
| 79 | Carrie Christianson | 55 | Wife | — | Iowa |
| 80 | Extra Line | None | — | — | — |
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)