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James Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Jackson-County, Missouri
Our Model Tree links this James Jensen across the 1930 and 1940 US Censuses in Jackson-County, Missouri (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 9-person household.
Age 18
b. ~1922
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Jackson-County, Missouri |
| Surname | Jensen |
| Given Name | James N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Washington Township |
| 1935 Residence (County) | Jackson |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Washington Township |
| Est. Birth Year | ~1922 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| John Jensen | Son | — | 10 | ~1930 |
| Robert Jensen | Son | — | 9 | ~1931 |
| George Jensen | Son | — | 6 | ~1934 |
| Frank Jensen | Son | — | 16 | ~1924 |
| Marie Jensen | Spouse | — | 40 | ~1900 |
| Dorotha Jensen | Daughter | — | 17 | ~1923 |
| James Jensen | Son | — | 18 | ~1922 |
| Niels Jensen | Head | — | 41 | ~1899 |
| Kenneth Jensen | Son | — | 8 | ~1932 |
Census Appearances
1930
Jackson, Missouri
Son, age 8
Jackson, Missouri · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Jackson-County, Missouri
Son, age 18
Jackson-County, Missouri · implied b. ~1922 — 9 household members
| Surname | Jensen |
| Given Name | James N. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Washington Township |
| 1935 Residence (County) | Jackson |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Jensen
Son · 1940 · age 18 · b. ~1922 · Missouri
★ You are viewing this record
Sibling
Robert Jensen
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Jensen
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Jensen
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Jensen
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Jensen
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorotha Jensen
Sibling · 1940 · age 17
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 — Jackson-County, Missouri
Open full size
1940 US Federal Census — Jackson-County, Missouri
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02116-00905)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Susan Brisco | 56 | Wife | — | Mo. |
| 2 | Niels V. Jensen | 41 | Head | Farm | Denmark |
| 3 | Marie K. Jensen | 40 | Wife | — | Denmark |
| 4 | James N. Jensen THIS PERSON | 18 | Son | — | Colorado |
| 5 | Dorotha A. Jensen | 17 | Daughter | — | Mo. |
| 6 | Frank M. Jensen | 16 | Son | — | Mo. |
| 7 | John R. Jensen | 10 | Son | — | Kansas |
| 8 | Robert E. Jensen | 9 | Son | — | Mo. |
| 9 | Kenneth E. Jensen | 8 | Son | — | Mo. |
| 10 | George W. Jensen | 6 | Son | — | Mo. |
| 11 | Jens P. Jensen | 62 | Head | Milk Route | Denmark |
| 12 | Anna Jensen | 64 | Wife | — | Denmark |
| 13 | Margaret Thaisen | 64 | Head | — | Denmark |
| 14 | James L. Akin | 53 | Head | Railroad Worker | Mo. |
| 15 | Emma Akin | 45 | Wife | — | Mo. |
| 16 | Jack E. Akin | 22 | Son | Labor | Mo. |
| 17 | Ted L. Akin | 20 | Son | Labor | Mo. |
| 18 | William B. Mullins | 49 | Head | Truck Driver | Mo. |
| 19 | Pearl M. Mullins | 42 | Wife | — | Mo. |
| 20 | Jack O'Rourke | 14 | Son | — | Mo. |
| 21 | Lee R. Mooney | 37 | Head | Handy Man | Mo. |
| 22 | Louis Mooney | 35 | Wife | Waitress | Mo. |
| 23 | Leon Meek | 36 | Head | Engineer | Kansas |
| 24 | Elizabeth Meek | 28 | Wife | — | Kansas |
| 25 | La Vera Meek | 8 | Daughter | — | Kansas |
| 26 | Leslie Meek | 7 | Son | — | Kansas |
| 27 | Allen Thebolt | 57 | Head | Farmer | Mo. |
| 28 | Gladys Thebolt | 55 | Wife | — | Mo. |
| 29 | Cecille Thebolt | 27 | Daughter | — | Mo. |
| 30 | Carlene Thebolt | 24 | Daughter | — | Mo. |
| 31 | Dorthea Thebolt | 17 | Daughter | — | Mo. |
| 32 | Thomas Siegelen | 35 | Head | Cement Finish | Neb. |
| 33 | Esther Siegelen | 31 | Wife | — | Kansas |
| 34 | Donald Siegelen | 13 | Son | — | Mo. |
| 35 | Betty Jean Siegelen | 11 | Daughter | — | Mo. |
| 36 | Eva Lucan Siegelen | 3 | Daughter | — | Mo. |
| 37 | James H. Robertson | 36 | Head | Janitor | Ill. |
| 38 | Rena May Robertson | 35 | Wife | — | Mo. |
| 39 | William W. Robertson | 8 | Son | — | Mo. |
| 40 | James Leroy Robertson | 7 | Son | — | Mo. |
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)