JK
John Klein — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this John Klein across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 8-person household.
Age 26
b. ~1914
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | Klein |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Watchman |
| Industry | Soap Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Watchman |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1914 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mildred Klein | Daughter | — | 18 | ~1922 |
| Loretta Klein | Daughter | — | 12 | ~1928 |
| Charles Klein | Son | — | 8 | ~1932 |
| John Klein | Son | — | 26 | ~1914 |
| Mary Klein | Daughter | — | 15 | ~1925 |
| John Klein | Head | — | 46 | ~1894 |
| Lucille Klein | Daughter | — | 9 | ~1931 |
| Anna Klein | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Hudson, New …
Son, age 15
Hudson, New Jersey · implied b. ~1915 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Klein |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Son, age 26
Hudson-County, New Jersey · implied b. ~1914 — 8 household members
| Surname | Klein |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Occupation | Watchman |
| Industry | Soap Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 John Klein across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Klein
Son · 1940 · age 26 · b. ~1914 · New Jersey
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Sibling
Mildred Klein
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Klein
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Klein
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Klein
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucille Klein
Sibling · 1940 · age 9
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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02404-00163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anne Foote | 14 | Niece | — | New Jersey |
| 2 | William Malloy | 52 | Head | Fireman | New Jersey |
| 3 | Mary Malloy | 47 | Wife | — | New Jersey |
| 4 | William J. Malloy | 15 | Son | — | New Jersey |
| 5 | John F. Mccanne | 56 | Head | Fireman | New Jersey |
| 6 | Mary Mccanne | 52 | Wife | — | New Jersey |
| 7 | Samuel J. Roberts | 57 | Head | Engineer | New Jersey |
| 8 | Florence Roberts | 56 | Wife | — | New Jersey |
| 9 | Norman Evers | 21 | Son | Moulder | New Jersey |
| 10 | Lawrence Evers | 17 | Son | Rear Worker | New Jersey |
| 11 | Florence Evers | 14 | Daughter | — | New Jersey |
| 12 | Neil Mccarthy | 42 | Head | Foreman | New Jersey |
| 13 | Josephine Mccarthy | 41 | Wife | — | New Jersey |
| 14 | Neil Mccarthy | 20 | Son | Fitter Helper | New Jersey |
| 15 | Ruth Mccarthy | 19 | Daughter | Rear Worker | New Jersey |
| 16 | Eileen Mccarthy | 14 | Daughter | — | New Jersey |
| 17 | Helen Mccarthy | 13 | Daughter | — | New Jersey |
| 18 | John J. Klein | 46 | Head | Constructor | New York |
| 19 | Anna Klein | 44 | Wife | — | New Jersey |
| 20 | John Klein THIS PERSON | 26 | Son | Watchman | New Jersey |
| 21 | Mildred Klein | 18 | Daughter | — | New Jersey |
| 22 | Mary Klein | 15 | Daughter | — | New Jersey |
| 23 | Loretta Klein | 12 | Daughter | — | New Jersey |
| 24 | Lucille Klein | 9 | Daughter | — | New Jersey |
| 25 | Charles Klein | 8 | Son | — | New Jersey |
| 26 | James L. Smith | 43 | Head | Electrician | New Jersey |
| 27 | Helen Smith | 40 | Wife | — | Ireland |
| 28 | James Smith | 17 | Son | — | New Jersey |
| 29 | Richard Smith | 16 | Son | — | New Jersey |
| 30 | Edith Smith | 15 | Daughter | — | New Jersey |
| 31 | Frank Smith | 13 | Son | — | New Jersey |
| 32 | George Luter | 48 | Head | Bartender | New Jersey |
| 33 | Florence Luter | 53 | Wife | — | New Jersey |
| 34 | Stephen Sharan | 30 | Son | Sign Painter | New Jersey |
| 35 | Kenneth Sharan | 27 | Son | Screen Maker | New Jersey |
| 36 | Cornelius Mccarthy | 75 | Head | Retired | Ireland |
| 37 | Mary Mccarthy | 73 | Wife | — | Ireland |
| 38 | Loretta Hill | 46 | Daughter | — | New Jersey |
| 39 | William Hill | 19 | Son | Clerk | New Jersey |
| 40 | Edmund Hill | 17 | Son | — | New Jersey |
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)