CJ
Carl Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mason-County, Michigan
Our Model Tree links this Carl Jensen across the 1930 and 1940 US Censuses in Mason-County, Michigan (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 7-person household.
Age 18
b. ~1922
Male
Son
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mason-County, Michigan |
| Surname | Jensen |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Ludington |
| 1935 Residence (County) | Mason |
| Additional Details | |
| Industry | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Township / Ward | Ludington |
| 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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Carl | Age | Birth yr |
|---|---|---|---|---|
| Peter Jensen | Head | — | 56 | ~1884 |
| Tillie Jensen | Spouse | — | 54 | ~1886 |
| Evelyn Jensen | Daughter | — | 20 | ~1920 |
| Carl Jensen | Son | — | 18 | ~1922 |
| Arthur Jensen | Son | — | 10 | ~1930 |
| Betty Jensen | Daughter | — | 15 | ~1925 |
| Ronald Jensen | Son | — | 15 | ~1925 |
Census Appearances
1930
Mason, Michigan
Son, age 8
Mason, Michigan · implied b. ~1922 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Mason-County, Michigan
Son, age 18
Mason-County, Michigan · implied b. ~1922 — 7 household members
| Surname | Jensen |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Ludington |
| 1935 Residence (County) | Mason |
| Industry | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Carl Jensen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Carl Jensen
Son · 1940 · age 18 · b. ~1922 · Michigan
★ You are viewing this record
Sibling
Ronald Jensen
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Jensen
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Jensen
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Jensen
Sibling · 1940 · age 20
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 — Mason-County, Michigan
Open full size
1940 US Federal Census — Mason-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01788-00331)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Charlotte M. | 10 | Daughter | — | Michigan |
| 42 | Donald | 9 | Son | — | Michigan |
| 43 | Harold | 4 | Son | — | Michigan |
| 44 | Barbara Jean | 2 | Daughter | — | Michigan |
| 45 | Adolph Kovar | 70 | Head | Wood-Finisher | Bohemia |
| 46 | Antonia Kovar | 67 | Wife | — | Bohemia |
| 47 | Carl O. Foreman | 49 | Head | Stationary Fireman | Sweden |
| 48 | Minnie Foreman | 36 | Wife | — | Michigan |
| 49 | Carl V. Foreman | 14 | Son | — | Michigan |
| 50 | Anna C. Foreman | 10 | Daughter | — | Michigan |
| 51 | Soren C. Sorensen | 62 | Head | Stationary Fireman | Denmark |
| 52 | Carrie Sorensen | 60 | Wife | — | Denmark |
| 53 | Burley Boertman | 32 | Head | Carpenter | Michigan |
| 54 | Esther Boertman | 27 | Wife | — | Michigan |
| 55 | Patricia Boertman | 5 | Daughter | — | Michigan |
| 56 | Barbara Boertman | 2 | Daughter | — | Michigan |
| 57 | Isabelle Boertman | 0 | Daughter | — | Michigan |
| 58 | Peter Jensen | 56 | Head | Janitor | Michigan |
| 59 | Tillie Jensen | 54 | Wife | — | Pennsylvania |
| 60 | Evelyn Jensen | 20 | Daughter | Basket Weaver | Michigan |
| 61 | Carl Jensen THIS PERSON | 18 | Son | — | Michigan |
| 62 | Betty Jensen | 15 | Daughter | — | Michigan |
| 63 | Arthur Jensen | 10 | Son | — | Michigan |
| 64 | Ronald Jensen | 15 | Son | — | Michigan |
| 65 | Frank Borowski | 69 | Head | — | Poland |
| 66 | Anna Borowski | 54 | Wife | — | Poland |
| 67 | Anna Borowski | 25 | Daughter | Laundress | Michigan |
| 68 | Joseph Borowski | 23 | Son | Polisher | Michigan |
| 69 | Stanley Borowski | 19 | Son | — | Michigan |
| 70 | David Borowski | 17 | Son | — | Michigan |
| 71 | Wilfred J. Le Mieux | 30 | Head | Recreational Director | Massachusetts |
| 72 | Mary Le Mieux | 28 | Wife | — | Michigan |
| 73 | Margaret Le Mieux | 9 | Daughter | — | Michigan |
| 74 | Francis Le Mieux | 6 | Son | — | Michigan |
| 75 | Maryhart Szabo | 54 | Head | Pipe-Fitter | Hungary |
| 76 | Agnes Szabo | 55 | Wife | — | Michigan |
| 77 | Albert Christoffersen | 47 | Head | Plumber | Michigan |
| 78 | Mary Christoffersen | 49 | Wife | — | Michigan |
| 79 | Lois Christoffersen | 12 | Daughter | — | Michigan |
| 80 | Lars Christoffersen | 10 | Son | — | Michigan |
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)