LJ
Leo Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Ward-County, North Dakota
Our Model Tree links this Leo Johnson across the 1930 and 1940 US Censuses in Ward-County, North Dakota (XGBoost, ~Confirmed) — first a head (b.~1904), then head of a 6-person household.
Age 36
b. ~1904
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ward-County, North Dakota |
| Surname | Johnson |
| Given Name | Leo E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Rice twp. |
| 1935 Residence (County) | Ward |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Farmer |
| Township / Ward | Rice Twp |
| 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 Leo | Age | Birth yr |
|---|---|---|---|---|
| Mary Johnson | Spouse | — | 40 | ~1900 |
| Mary Johnson | Daughter | — | 3 | ~1937 |
| Robert Johnson | Son | — | 7 | ~1933 |
| Leo Johnson | Head | — | 36 | ~1904 |
| Elmer Johnson | Son | — | 5 | ~1935 |
| Margaret Johnson | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Ward, North …
Son, age 26
Ward, North Dakota · implied b. ~1904 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Minnesota |
| Occupation | Farmer |
| Industry | Grain farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Ward-County, North …
Head, age 36
Ward-County, North Dakota · implied b. ~1904 — 6 household members
| Surname | Johnson |
| Given Name | Leo E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Rice twp. |
| 1935 Residence (County) | Ward |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Leo Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leo Johnson
Head · 1940 · age 36 · b. ~1904 · North Dakota
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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 — Ward-County, North Dakota
Open full size
1940 US Federal Census — Ward-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03017-00925)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Melvin Knudson | 34 | Head | Farmer | North Dakota |
| 42 | Arthur Knudson | 36 | Head | Farmer | North Dakota |
| 43 | Alice Knudson | 34 | Wife | — | North Dakota |
| 44 | Claymon Knudson | 13 | Son | — | North Dakota |
| 45 | Wallace Knudson | 12 | Son | — | North Dakota |
| 46 | Mary Lee Knudson | 4 | Son | — | North Dakota |
| 47 | Vernie E. Johnson | 58 | Head | Farmer | Iowa |
| 48 | Louise Johnson | 52 | Wife | — | Minnesota |
| 49 | Chester Johnson | 23 | Son | Farmer | North Dakota |
| 50 | Clayton Johnson | 10 | Son | — | North Dakota |
| 51 | Vernice Johnson | 26 | Son | Farmer | North Dakota |
| 52 | Bernice Johnson | 24 | Daughter | — | North Dakota |
| 53 | Leo E. Johnson THIS PERSON | 36 | Head | Farmer | North Dakota |
| 54 | Mary Johnson | 40 | Wife | — | Nebraska |
| 55 | Margaret Johnson | 9 | Daughter | — | North Dakota |
| 56 | Robert Johnson | 7 | Son | — | North Dakota |
| 57 | Elmer Johnson | 5 | Son | — | North Dakota |
| 58 | Mary Jo Johnson | 3 | Daughter | — | North Dakota |
| 59 | Felix St. Aubin | 62 | Head | Farmer | Illinois |
| 60 | Evelyn St. Aubin | 59 | Wife | — | Canada-English |
| 61 | Henry Mattei | 62 | Head | Farmer | Minnesota |
| 62 | Emma Mattei | 57 | Wife | — | Minnesota |
| 63 | Walter Mattei | 29 | Son | Farm Laborer | North Dakota |
| 64 | Henry Jr. Mattei | 24 | Son | Farm Laborer | North Dakota |
| 65 | Herbert Mattei | 23 | Son | Farm Laborer | North Dakota |
| 66 | Leonard Olson | 36 | Head | Farmer | North Dakota |
| 67 | Inez Olson | 34 | Wife | — | North Dakota |
| 68 | Leonard Jr. Olson | 9 | Son | — | North Dakota |
| 69 | Rodney Olson | 5 | Son | — | North Dakota |
| 70 | Walter Olson | 2 | Son | — | North Dakota |
| 71 | Herman Schwede | 67 | Head | Farmer | Wisconsin |
| 72 | Ida Schwede | 62 | Wife | — | Minnesota |
| 73 | Lewis L. Schwede | 23 | Son | Farm Laborer | North Dakota |
| 74 | Andrew Jensen | 60 | Head | Farmer | Denmark |
| 75 | Tillie Jensen | 55 | Wife | — | Minnesota |
| 76 | Knudt Asmundson | 56 | Head | Farmer | Norway |
| 77 | Asta Asmundson | 49 | Wife | — | Norway |
| 78 | Halvar Asmundson | 28 | Son | — | North Dakota |
| 79 | Henry Asmundson | 21 | Son | — | North Dakota |
| 80 | Mora Asmundson | 18 | Daughter | — | North Dakota |
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)