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James Jensen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sheridan-County, Montana
Our Model Tree links this James Jensen across the 1920, 1930 and 1940 US Censuses in Sheridan-County, Montana (XGBoost, ~Confirmed), with identified parents Niels & Truls — first a son (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sheridan-County, Montana |
| Surname | Jensen |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sheridan |
| Additional Details | |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 90 |
| Highest Grade | H-4 |
| 1935 Residence | Montana |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Occupation | Farm Laborer |
| Township / Ward | School District 72 |
| Est. Birth Year | ~1918 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Nielsine Jensen | Spouse | — | 46 | ~1894 |
| James Jensen | Son | — | 22 | ~1918 |
| Harry Jensen | Son | — | 15 | ~1925 |
| Truls Jensen | Head | — | 52 | ~1888 |
| Truls Jensen | Son | — | 8 | ~1932 |
| Jessie Jensen | Daughter | — | 13 | ~1927 |
| Thelma Jensen | Daughter | — | 10 | ~1930 |
Census Appearances
1920
Sheridan, Montana
Son, age 2
Sheridan, Montana · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | none |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1930
Sheridan, Montana
Son, age 12
Sheridan, Montana · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Montana |
| Age at First Marriage | 12 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Sheridan-County, Montana
Son, age 22
Sheridan-County, Montana · implied b. ~1918 — 7 household members
| Surname | Jensen |
| Given Name | James A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Sheridan |
| Occupation | Farm laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 60 |
| Income (1939) | 90 |
| Highest Grade | H-4 |
| 1935 Residence | Montana |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 James Jensen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Niels Jensen (~0.92 confidence) and father Truls Jensen (~0.92 confidence) and mother Christina Jensen (~0.92 confidence) and mother Ingeborg Jensen (~0.92 confidence) and mother Nielsine Jensen (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Niels Jensen
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Truls Jensen
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Christina Jensen
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Ingeborg Jensen
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Nielsine Jensen
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Jensen
Son · 1940 · age 22 · b. ~1918 · Montana
★ You are viewing this record
Sibling
Truls Jensen
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Jensen
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Jensen
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jessie Jensen
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Sheridan-County, Montana
Open full size
1940 US Federal Census — Sheridan-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02229-00569)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Madsen | 54 | Head | Farmer | Minnesota |
| 2 | Lula L. Madsen | 56 | Wife | — | Iowa |
| 3 | James S. Snyder | 18 | Nephew-in-law | Farm Laborer | Iowa |
| 4 | Ole J. Flahne | 55 | Head | Farmer | Minnesota |
| 5 | Ruth Flahne | 42 | Wife | — | Montana |
| 6 | Gladys R. Flahne | 20 | Daughter | — | Montana |
| 7 | Blanche J. Flahne | 18 | Daughter | — | Montana |
| 8 | Joseph C. Flahne | 16 | Son | — | Montana |
| 9 | Alma P. Flahne | 14 | Daughter | — | Montana |
| 10 | Mabel Flahne | 10 | Daughter | — | Montana |
| 11 | Orville Flahne | 8 | Son | — | Montana |
| 12 | Herman M. Lee | 30 | Head | Post Master | Montana |
| 13 | Arthur J. Johnson | 22 | Head | Teacher | Montana |
| 14 | Walter M. Barge | 31 | Head | Truck Driver | Minnesota |
| 15 | Margrit L. Barge | 25 | Wife | — | Montana |
| 16 | Janice F. Barge | 2 | Daughter | — | Montana |
| 17 | Truls K. Jensen | 52 | Head | Farmer | Denmark |
| 18 | Nielsine K. Jensen | 46 | Wife | — | Denmark |
| 19 | James A. Jensen THIS PERSON | 22 | Son | Farm Laborer | Montana |
| 20 | Harry C. Jensen | 15 | Son | — | Montana |
| 21 | Jessie A. Jensen | 13 | Daughter | — | Montana |
| 22 | Thelma K. Jensen | 10 | Daughter | — | Montana |
| 23 | Truls Jr. Jensen | 8 | Son | — | Montana |
| 24 | Vernon J. Mickels | 38 | Head | Farmer | North Dakota |
| 25 | Hazel R. Mickels | 37 | Wife | — | Illinois |
| 26 | Frank J. Mickels | 10 | Son | — | North Dakota |
| 27 | Iris A. Mickels | 7 | Daughter | — | North Dakota |
| 28 | Harold L. Mickels | 5 | Son | — | Montana |
| 29 | William F. Leader | 50 | Head | Laborer | Minnesota |
| 30 | Sophie Leader | 45 | Wife | Housekeeper | Minnesota |
| 31 | Harold P. Leader | 21 | Son | Waiter | Montana |
| 32 | Bernice C. Leader | 19 | Daughter | — | Montana |
| 33 | Ester E. Leader | 17 | Daughter | Housekeeper | Montana |
| 34 | Freddy W. Leader | 14 | Son | — | Montana |
| 35 | Agnes Leader | 12 | Daughter | — | Montana |
| 36 | Selma Leader | 9 | Daughter | — | Montana |
| 37 | Lenard Leader | 4 | Son | — | Montana |
| 38 | Henry Styve | 48 | Head | Farmer | Minnesota |
| 39 | Martha G. Styve | 39 | Wife | — | Minnesota |
| 40 | Theodore L. Flahne | 50 | Head | Letter Carrier | Minnesota |
Pedigree Summary
James + 4 siblings
Gen 1 · 5 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)