CJ
Carl Jensen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Adair-County, Iowa
Our Model Tree links this Carl Jensen across the 1920, 1930 and 1940 US Censuses in Adair-County, Iowa (XGBoost, ~Confirmed), with identified parents James — first a head (b.~1900), then head of a 6-person household.
Age 40
b. ~1900
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Adair-County, Iowa |
| Surname | Jensen |
| Given Name | Carl H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Jackson Township |
| 1935 Residence (County) | Adair |
| Additional Details | |
| Occupation | farming |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farming |
| Township / Ward | Jackson Township |
| Est. Birth Year | ~1900 |
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 Carl | Age | Birth yr |
|---|---|---|---|---|
| Betty Jensen | Daughter | — | 13 | ~1927 |
| Carl Jensen | Head | — | 40 | ~1900 |
| Mark Jensen | Son | — | 2 | ~1938 |
| Joan Jensen | Daughter | — | 12 | ~1928 |
| Bessie Jensen | Spouse | — | 36 | ~1904 |
| Clare Jensen | Son | — | 8 | ~1932 |
Census Appearances
1920
Adair, Iowa
Son, age 19
Adair, Iowa · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Carl H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Adair, Iowa
Head, age 30
Adair, Iowa · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Carl H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Adair-County, Iowa
Head, age 40
Adair-County, Iowa · implied b. ~1900 — 6 household members
| Surname | Jensen |
| Given Name | Carl H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Jackson Township |
| 1935 Residence (County) | Adair |
| Occupation | farming |
| Industry | farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Jensen (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Jensen
b. ~1864
Source father
● Household
· direct · ~0.92
This person
Anchor record
Carl Jensen
Head · 1940 · age 40 · b. ~1900 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Adair-County, Iowa
Open full size
1940 US Federal Census — Adair-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01136-00181)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joe Lee | 13 | Son | — | Iowa |
| 42 | Lois Lee | 10 | Daughter | — | Iowa |
| 43 | Jean Lee | 7 | Daughter | — | Iowa |
| 44 | Carl H. Jensen THIS PERSON | 40 | Head | Farming | Iowa |
| 45 | Bessie R. Jensen | 36 | Wife | — | Iowa |
| 46 | Joan Jensen | 12 | Daughter | — | Iowa |
| 47 | Betty Jensen | 13 | Daughter | — | Iowa |
| 48 | Clare Jensen | 8 | Son | — | Iowa |
| 49 | Mark Jensen | 2 | Son | — | Iowa |
| 50 | Harold Ofundheller | 24 | Head | Farming | Iowa |
| 51 | Mabel Ofundheller | 21 | Wife | — | Iowa |
| 52 | Harold Brown | 35 | Head | Farming | Iowa |
| 53 | Mary Brown | 33 | Wife | — | Iowa |
| 54 | Donald Brown | 10 | Son | — | Iowa |
| 55 | Mary Lou Brown | 3 | Daughter | — | Iowa |
| 56 | Howard Daughenbaugh | 31 | Head | Laborer | Iowa |
| 57 | Margaret Daughenbaugh | 28 | Wife | — | Iowa |
| 58 | Betty Lou Daughenbaugh | 9 | Daughter | — | Iowa |
| 59 | Richard Daughenbaugh | 6 | Son | — | Iowa |
| 60 | Charles Daughenbaugh | 5 | Son | — | Iowa |
| 61 | Herbert Daughenbaugh | 2 | Son | — | Iowa |
| 62 | Ray Daughenbaugh | 12 | Son | — | Iowa |
| 63 | Arthur D. Brown | 51 | Head | Farming | Iowa |
| 64 | Velma Brown | 49 | Wife | — | Iowa |
| 65 | Mary Brown | 6 | Daughter | — | Iowa |
| 66 | William Conley | 68 | Head | Farming | Iowa |
| 67 | Gertrude Conley | 67 | Wife | — | Kansas |
| 68 | Everett Conley | 23 | Son | Farming | Iowa |
| 69 | Nina Conley | 21 | Daughter | — | Iowa |
| 70 | Avis Conley | 15 | Daughter | — | Iowa |
| 71 | Harold Dueck | 26 | Head | Farming | Iowa |
| 72 | Evelyn Dueck | 21 | Wife | — | Iowa |
| 73 | Lavon Dueck | 2 | Daughter | — | Iowa |
| 74 | Shirley Dueck | 1 | Daughter | — | Iowa |
| 75 | Carl Miller | 46 | Head | Farming | Iowa |
| 76 | Marie Miller | 45 | Wife | — | Iowa |
| 77 | Kenneth Miller | 20 | Son | Teacher | Iowa |
| 78 | Elanore Pittman | 18 | Lodger | Teacher | Iowa |
| 79 | Marion Green | 54 | Head | Farming | Iowa |
| 80 | Helen Green | 50 | Wife | — | Iowa |
Pedigree Summary
Carl
Gen 1 · 1 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)