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George Jensen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this George Jensen across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 3-person household.
Age 61
b. ~1879
Male
Head
Born: Denmark
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Jensen |
| Given Name | George V. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Carpentering |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | H 3 |
| 1935 Residence | Same Place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
| Occupation | Carpentering |
| Township / Ward | Waterloo City |
| Est. Birth Year | ~1879 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to George | Age | Birth yr |
|---|---|---|---|---|
| George Jensen | Son | — | 34 | ~1906 |
| Mary Jensen | Spouse | — | 56 | ~1884 |
| George Jensen | Head | — | 61 | ~1879 |
Census Appearances
1920
Black Hawk, …
Head, age 40
Black Hawk, Iowa · implied b. ~1880 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | George N |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Denmark |
| Year of Immigration | 1896 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Manual Training Teacher |
| Industry | High School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Birth Country | Denmark |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | denmark |
1930
Black Hawk, …
Head, age 51
Black Hawk, Iowa · implied b. ~1879 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | George V |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Denmark |
| Naturalization Status | Naturalized |
| Year of Immigration | 1896 |
| Age at First Marriage | 21 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Denmark |
| Occupation | Instructor |
| Industry | Public School |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Danish |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Veteran | No |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
1940
Black-Hawk-County, Iowa
Head, age 61
Black-Hawk-County, Iowa · implied b. ~1879 — 3 household members
| Surname | Jensen |
| Given Name | George V. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Denmark |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Naturalization Status | Naturalized |
| Occupation | Carpentering |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 800 |
| Highest Grade | H 3 |
| 1935 Residence | Same Place |
| Birth Country | Denmark |
| Birthplace (normalized) | denmark |
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 George Jensen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
George Jensen
Head · 1940 · age 61 · b. ~1879 · Iowa
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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 — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01139-01268)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Rex B. Foster | 38 | Head | Dentist | Iowa |
| 42 | Bettie Foster | 37 | Wife | — | Iowa |
| 43 | George Foster | 18 | Son | — | Iowa |
| 44 | Rex Jr. Foster | 15 | Son | — | Iowa |
| 45 | Here Ends Block Foster | None | — | — | — |
| 46 | Claude Clark | 58 | Head | Owner And President | Iowa |
| 47 | Leila Clark | 52 | Wife | — | Iowa |
| 48 | Elinor Clark | 19 | Daughter | — | Iowa |
| 49 | William Clark | 18 | Son | New Worker | Iowa |
| 50 | Here Ends Block Clark | None | — | — | — |
| 51 | Martha E. Johnson | 73 | Head | — | Iowa |
| 52 | Daughter Margaret E. | None | F | Camp Fire Girls | — |
| 53 | Daughter Katherine M. | None | F | — | — |
| 54 | Ada Mikkelsen | 29 | Maid | Household Duties | Iowa |
| 55 | George V. Jensen THIS PERSON | 61 | Head | Carpentering | Denmark |
| 56 | Mary Alice Jensen | 56 | Wife | — | Illinois |
| 57 | George V. Jr. Jensen | 34 | Son | Odd Jobs | Iowa |
| 58 | Walter E. Riebech | 32 | Head | Branch Manager | Illinois |
| 59 | Flossie Ann Riebech | 32 | Wife | — | Illinois |
| 60 | Harry J. Perks | 51 | Head | Owner & Operator | Iowa |
| 61 | Jenny Perks | 51 | Wife | — | Iowa |
| 62 | Neil Perks | 17 | Son | — | Iowa |
| 63 | Frank Shirmer | 56 | Head | Owner And Manager | Iowa |
| 64 | Martha Shirmer | 56 | Wife | — | Iowa |
| 65 | Gretchen Shirmer | 24 | Daughter | Stenographer & Bookkeeper | Iowa |
| 66 | William Bassett | 37 | Head | Salesman & Manager | Illinois |
| 67 | Velma Jean Bassett | 35 | Wife | — | West Virginia |
| 68 | William Edward Bassett | 6 | Son | — | Iowa |
| 69 | Beatrice Elvidge | 24 | Maid | Household Duties | Iowa |
| 70 | Mike E. George | 40 | Head | Real Estate Broker | Greece-Vero |
| 71 | Letha K. George | 39 | Wife | — | Iowa |
| 72 | Norma Joy George | 12 | Daughter | — | Iowa |
| 73 | Mabel Shelloner | 26 | Maid | Household Duties | Iowa |
| 74 | Charles Kasen | 30 | Head | City Salesman | Iowa |
| 75 | Gladys Kasen | 26 | Wife | — | Wisconsin |
| 76 | Barbara Kasen | 3 | Daughter | — | Iowa |
| 77 | Wayne L. Pervin | 50 | Head | Purchasing Agent Manager | Iowa |
| 78 | Hazel J. Pervin | 47 | Wife | — | Iowa |
| 79 | Jo Anne Pervin | 16 | Daughter | — | Iowa |
| 80 | Wayne Jr. Pervin | 12 | Daughter | — | Iowa |
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)