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John Olson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this John Olson across the 1920, 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 7-person household.
Age 53
b. ~1887
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Olson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Boomer Twp |
| 1935 Residence (County) | Pottawattamie |
| Additional Details | |
| Occupation | Farmer |
| Industry | on Farm |
| Class of Worker | OA |
| Hours Worked | 65 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Boomer Twp |
| Est. Birth Year | ~1887 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Esther Olson | Daughter | — | 18 | ~1922 |
| Bernice Olson | Daughter | — | 16 | ~1924 |
| John Olson | Head | — | 53 | ~1887 |
| Eugene Olson | Son | — | 10 | ~1930 |
| Dean Olson | Son | — | 14 | ~1926 |
| Kenneth Olson | Son | — | 2 | ~1938 |
| Dagmar Olson | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Pottawattamie, Iowa
Head, age 32
Pottawattamie, Iowa · implied b. ~1888
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Olson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Year of Naturalization | M |
| Birthplace (normalized) | iowa |
Head, age 43
Pottawattamie, Iowa · implied b. ~1887 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Olsen |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 27 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Radio Set | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Head, age 53
Pottawattamie-County, Iowa · implied b. ~1887 — 7 household members
| Surname | Olson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Boomer Twp |
| 1935 Residence (County) | Pottawattamie |
| Occupation | Farmer |
| Industry | on Farm |
| Class of Worker | OA |
| Hours Worked | 65 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 John Olson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Olson
Head · 1940 · age 53 · b. ~1887 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01198-00066)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Maria C. Gravert | 45 | Wife | — | Iowa |
| 2 | Dean E. Gravert | 15 | Son | — | Iowa |
| 3 | Albert F. Mccracken | 35 | Head | Farmer | Iowa |
| 4 | Mark M. Mccracken | 33 | Brother | Farmer | Iowa |
| 5 | Rollie M. Mccracken | 69 | Father | Farmer | Iowa |
| 6 | Lena B. Mccracken | 58 | Mother | — | Iowa |
| 7 | Frank W. Gravert | 50 | Head | Farmer | Iowa |
| 8 | Nedra Gravert | 50 | Wife | — | Iowa |
| 9 | Lavone Gravert | 13 | Daughter | — | Nebr. |
| 10 | Ellis Christiansen | 62 | Head | Farmer | Iowa |
| 11 | Nannine E. Christiansen | 57 | Wife | — | Iowa |
| 12 | Lilly Christiansen | 25 | Daughter | — | Iowa |
| 13 | Louise Christiansen | 19 | Daughter | — | Iowa |
| 14 | John Olson THIS PERSON | 53 | Head | Farmer | Iowa |
| 15 | Dagmar A. Olson | 44 | Wife | — | Iowa |
| 16 | Esther S. Olson | 18 | Daughter | — | Iowa |
| 17 | Bernice A. Olson | 16 | Daughter | — | Iowa |
| 18 | Dean H. Olson | 14 | Son | — | Iowa |
| 19 | Eugene H. Olson | 10 | Son | — | Iowa |
| 20 | Kenneth E. Olson | 2 | Son | — | Iowa |
| 21 | Harold D. Driver | 35 | Head | Farm Labor | Iowa |
| 22 | Lillie M. Driver | 33 | Wife | — | Iowa |
| 23 | Dolores L. Driver | 12 | Daughter | — | Iowa |
| 24 | H. Kenneth Driver | 9 | Son | — | Iowa |
| 25 | Gerald W. Driver | 7 | Son | — | Iowa |
| 26 | Ronald E. Driver | 3 | Son | — | Iowa |
| 27 | J. C. Jacobson | 68 | Head | Farmer | Denmark |
| 28 | Bellavi A. Jacobson | 56 | Wife | — | Iowa |
| 29 | Emil J. Jacobson | 22 | Son | Farmer Son | Iowa |
| 30 | Ester R. Jacobson | 15 | Daughter | — | Iowa |
| 31 | W. M. Ernest | 32 | Head | Farmer | Iowa |
| 32 | John Herbert Ernest | 25 | Brother | Farmer | Iowa |
| 33 | Brother George | None | M | Farm | — |
| 34 | Father John L. | None | M | — | — |
| 35 | Jake Regeth | 25 | Head | Farmer | Iowa |
| 36 | Ray Gaver | 43 | Head | Farmer | Iowa |
| 37 | Leona M. Gaver | 35 | Wife | — | Iowa |
| 38 | Arlena A. Gaver | 14 | Daughter | — | Iowa |
| 39 | Eugene R. Gaver | 12 | Son | — | Iowa |
Related Census Records
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)