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John Mack — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this John Mack across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 4-person household.
Age 40
b. ~1900
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Linden City |
| 1935 Residence (County) | Union |
| Additional Details | |
| Occupation | Maintenance |
| Industry | Acetylene |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Maintenance |
| Township / Ward | Linden City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Albert Mack | Son | — | 12 | ~1928 |
| John Mack | Head | — | 40 | ~1900 |
| Arthur Mack | Son | — | 15 | ~1925 |
| Helen Mack | Spouse | — | 38 | ~1902 |
Census Appearances
1920
Hudson, New …
Other, age 20
Hudson, New Jersey · implied b. ~1900 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Step-son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Occupation | Helper |
| Industry | Macaroni |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Union, New …
Head, age 30
Union, New Jersey · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | New York |
| Age at First Marriage | 22 |
| Father's Birthplace | New York |
| Mother's Birthplace | United States |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Radio Set | R |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Union-County, New …
Head, age 40
Union-County, New Jersey · implied b. ~1900 — 4 household members
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Linden City |
| 1935 Residence (County) | Union |
| Occupation | Maintenance |
| Industry | Acetylene |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Mack across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Mack
Head · 1940 · age 40 · b. ~1900 · New Jersey
★ 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 — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02386-00527)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen Fisher | 13 | Daughter | — | New Jersey |
| 42 | John Jr Fisher | 10 | Son | — | New Jersey |
| 43 | Edward Winans | 65 | Head | Sergeant At Arms | New Jersey |
| 44 | Marguerite Winans | 45 | Wife | — | New Jersey |
| 45 | Edward Winans | 20 | Son | Shipping Clerk | New Jersey |
| 46 | Edward Winans | 15 | Grandson | — | New Jersey |
| 47 | De Witt Homan | 52 | Head | Test Runner | New Jersey |
| 48 | Mary (X) Homan | 49 | Wife | — | New Jersey |
| 49 | Albert Hendy | 34 | Son-in-law | Stationary Engineer | Virginia |
| 50 | Olive Hendy | 29 | Daughter | Stenographer | New Jersey |
| 51 | Edna Hendy | 10 | Grandchild | — | New Jersey |
| 52 | Olive Hendy | 9 | Grandchild | — | New Jersey |
| 53 | Chas. D. Winans | 49 | Brother | Supervisor Real Estate And Collection | New Jersey |
| 54 | Vera Hendy | 21 | Daughter | — | New Jersey |
| 55 | (Blank Ends Here - 6 Morris Ave) | None | — | — | — |
| 56 | John Mack THIS PERSON | 40 | Head | Maintenance | New York |
| 57 | Helen Mack | 38 | Wife | — | England |
| 58 | Arthur E. Mack | 15 | Son | — | New Jersey |
| 59 | Albert F. Mack | 12 | Son | — | New Jersey |
| 60 | Fred R. Stirrat | 46 | Head | Chemical Operator | New Jersey |
| 61 | Nellie Stirrat | 46 | Wife | — | New Jersey |
| 62 | William Stirrat | 21 | Son | — | New York |
| 63 | Vincent Basile | 20 | Son-in-law | Press Operator | New Jersey |
| 64 | Evelyn Basile | 18 | Daughter | — | New Jersey |
| 65 | Richard Basile | 0 | Grandson | — | New Jersey |
| 66 | Adolph Kaufman | 49 | Head | Chemical Operator | New Jersey |
| 67 | Nora (X) Kaufman | 47 | Wife | — | New York |
| 68 | Adolph Jr Kaufman | 23 | Son | Material Cutter | New Jersey |
| 69 | Nora Kaufman | 21 | Daughter | Salesgirl | New Jersey |
| 70 | Emma Kaufman | 18 | Daughter | — | New Jersey |
| 71 | Roderick Kaufman | 15 | Son | — | New Jersey |
| 72 | Agnes Kaufman | 12 | Daughter | — | New Jersey |
| 73 | Joseph (X) Dellatio | 27 | Head | Junior Clerk | New York |
| 74 | Mary Dellatio | 35 | Wife | — | Canada |
| 75 | Muriel Dellatio | 13 | Daughter | — | New Jersey |
| 76 | Dorothy Dellatio | 11 | Daughter | — | New Jersey |
| 77 | Emanuel Frangella | 30 | Head | Butcher | New Jersey |
| 78 | Amelia Frangella | 29 | Wife | — | Pennsylvania |
| 79 | Emanuel Jr Frangella | 3 | Son | — | New Jersey |
| 80 | Milton Zimmerman | 38 | Head | Silk Screen Maker | 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)