LJ
Louis Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Columbia-County, Oregon
Our Model Tree links this Louis Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Columbia-County, Oregon (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 3-person household.
Age 73
b. ~1867
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Columbia-County, Oregon |
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Clatskanie |
| 1935 Residence (County) | Columbia |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | G 8 |
| 1935 Residence | Same house |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Township / Ward | Clatskanie |
| Est. Birth Year | ~1867 |
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 Louis | Age | Birth yr |
|---|---|---|---|---|
| Louis Johnson | Head | — | 73 | ~1867 |
| Victor Johnson | Son | — | 46 | ~1894 |
| Sarah Johnson | Spouse | — | 72 | ~1868 |
Census Appearances
1910
Columbia, Oregon
Head, age 43
Columbia, Oregon · implied b. ~1867 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Sweden |
| Years Married | 22 |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Faller |
| Industry | Logging Camp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1920
Columbia, Oregon
Head, age 54
Columbia, Oregon · implied b. ~1866 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | Dairy farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Sweden |
| Year of Naturalization | 1894 |
| Birthplace (normalized) | sweden |
1930
Columbia, Oregon
Head, age 63
Columbia, Oregon · implied b. ~1867 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1887 |
| Age at First Marriage | 22 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Columbia-County, Oregon
Head, age 73
Columbia-County, Oregon · implied b. ~1867 — 3 household members
| Surname | Johnson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Clatskanie |
| 1935 Residence (County) | Columbia |
| Naturalization Status | Naturalized |
| Highest Grade | G 8 |
| 1935 Residence | Same house |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 Louis Johnson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Louis Johnson
Head · 1940 · age 73 · b. ~1867 · Oregon
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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 — Columbia-County, Oregon
Open full size
1940 US Federal Census — Columbia-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03357-00048)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eldon Hawk | 14 | Son | — | Washington |
| 2 | Steel Cook | 44 | Head | School Bus Driver | Idaho |
| 3 | Ima Q Cook | 39 | Wife | — | Idaho |
| 4 | Merle Cook | 14 | Daughter | — | Oregon |
| 5 | Eugene Cook | 12 | Son | — | Oregon |
| 6 | Eric John Lindberg | 81 | Head | Farmer | Sweden |
| 7 | Anna M. Lindberg | 87 | Wife | — | Sweden |
| 8 | Oscar L. Lindberg | 46 | Son | Patrolman | Oregon |
| 9 | Max Fogel | 60 | Head | Farmer | Germany |
| 10 | Francis Fogel | 55 | Wife | — | Oregon |
| 11 | Clayton Fogel | 25 | Son | Truck Driver | Oregon |
| 12 | Jess Fogel | 21 | Son | Farm Helper | Oregon |
| 13 | Carl E. Danielson | 64 | Head | Farmer | Sweden |
| 14 | Anna Q Danielson | 59 | Wife | — | Sweden |
| 15 | Sam Devine | 39 | Head | — | Oregon |
| 16 | Ellen Q Devine | 40 | Wife | — | Sweden |
| 17 | Clair Devine | 10 | Son | — | Oregon |
| 18 | James W. Devine | 73 | Father | — | Missouri |
| 19 | Walter Zillman | 38 | Head | Farmer | Oregon |
| 20 | Marion Zillman | 31 | Wife | — | Iowa |
| 21 | N. Hinton Zillman | 12 | Son | — | Oregon |
| 22 | Mary Ruth Zillman | 10 | Daughter | — | Oregon |
| 23 | William F. Zillman | 8 | Son | — | Oregon |
| 24 | James O. Zillman | 1 | Son | — | Oregon |
| 25 | Dwight Clausen | 45 | Head | Stationary Engineer | Iowa |
| 26 | Leila Clausen | 35 | Wife | — | Idaho |
| 27 | Charles Clausen | 18 | Son | — | Idaho |
| 28 | Arthur Clausen | 14 | Son | — | Idaho |
| 29 | Celaski Bell | 89 | Mother | — | Michigan |
| 30 | Herbert B. Johnson | 31 | Head | Brakeman | Oregon |
| 31 | Viola Johnson | 28 | Wife | — | Oregon |
| 32 | Melvin Carlson | 25 | Hired man | Farm Helper | Oregon |
| 33 | Louis Johnson THIS PERSON | 73 | Head | — | Sweden |
| 34 | Sarah Johnson | 72 | Wife | — | Sweden |
| 35 | Victor Johnson | 46 | Son | Farm Helper | Oregon |
| 36 | Fred Johnson | 41 | Head | Farmer | Oregon |
| 37 | Agnes Johnson | 37 | Wife | — | Oregon |
| 38 | Arlene Johnson | 16 | Daughter | — | Oregon |
| 39 | Margaret Johnson | 14 | Daughter | — | Oregon |
| 40 | Louis Johnson | 9 | Son | — | Oregon |
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)