JD
John Decker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Morris-County, New Jersey
Our Model Tree links this John Decker across the 1930 and 1940 US Censuses in Morris-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 16-person household.
Age 16
b. ~1924
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Morris-County, New Jersey |
| Surname | Decker |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Butler |
| 1935 Residence (County) | Morris |
| Additional Details | |
| Occupation | Paper Worker |
| Industry | Paper Co |
| Class of Worker | PW |
| Income (1939) | 240 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Paper Worker |
| Township / Ward | Butler |
| Est. Birth Year | ~1924 |
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.
16 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Phillip Decker | Son | — | 5 | ~1935 |
| Mary Decker | Daughter | — | 15 | ~1925 |
| Barbara Decker | Daughter | — | 5 | ~1935 |
| Edwin Decker | Son | — | 14 | ~1926 |
| Agnes Decker | Spouse | — | 49 | ~1891 |
| Helen Decker | Daughter | — | 19 | ~1921 |
| John Decker | Head | — | 54 | ~1886 |
| David Decker | Son | — | 9 | ~1931 |
| George Decker | Son | — | 13 | ~1927 |
| John Decker | Son | — | 16 | ~1924 |
| Lawrence Decker | Son | — | 18 | ~1922 |
| Raymond Decker | Son | — | 21 | ~1919 |
| Teresa Decker | Daughter | — | 11 | ~1929 |
| Ruth Decker | Daughter | — | 24 | ~1916 |
| Anna Decker | Daughter | — | 8 | ~1932 |
| Irene Decker | Daughter | — | 23 | ~1917 |
Census Appearances
1930
Passaic, New …
Son, age 6
Passaic, New Jersey · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Decker |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Morris-County, New …
Son, age 16
Morris-County, New Jersey · implied b. ~1924 — 16 household members
| Surname | Decker |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Butler |
| 1935 Residence (County) | Morris |
| Occupation | Paper Worker |
| Industry | Paper Co |
| Class of Worker | PW |
| Income (1939) | 240 |
| Highest Grade | Hs 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 Decker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Decker
Son · 1940 · age 16 · b. ~1924 · New Jersey
★ You are viewing this record
Sibling
Mary Decker
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Decker
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Decker
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Decker
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Decker
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Decker
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Decker
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillip Decker
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Decker
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Decker
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Decker
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Decker
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Decker
Sibling · 1940 · age 19
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 — Morris-County, New Jersey
Open full size
1940 US Federal Census — Morris-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02370-00296)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jean Marren | 8 | Daughter | — | New Jersey |
| 2 | Ruth Marren | 5 | Daughter | — | New Jersey |
| 3 | Fletcher Marren | 3 | Son | — | New Jersey |
| 4 | Patricia Marren | 2 | Daughter | — | New Jersey |
| 5 | Eaulden | Enulden Maxfield | 35 | Head | Shipping Clerk | New Jersey |
| 6 | Beatrice Maxfield | 35 | Wife | — | New Jersey |
| 7 | Thomas J Henderson | 22 | Head | Refrigeration Man | Florida |
| 8 | Luna G Henderson | 24 | Wife | — | Alabama |
| 9 | Mary L Henderson | 1 | Daughter | — | New Jersey |
| 10 | Margaret Gurnee | 67 | Head | — | New Jersey |
| 11 | Albert J Heller | 53 | Head | Railroad Hostler | Pennsylvania |
| 12 | Susie M Heller | 57 | Wife | — | New York |
| 13 | George P Heller | 26 | Son | Poultryman | New Jersey |
| 14 | Howard S Heller | 23 | Son | Rubber Worker | Pennsylvania |
| 15 | Elizabeth Heller | 21 | Daughter | — | Pennsylvania |
| 16 | Lewis Hand | 36 | Head | Rubber Worker | New Jersey |
| 17 | Teresa Hand | 35 | Wife | — | New Jersey |
| 18 | Helen Hand | 17 | Daughter | — | New Jersey |
| 19 | Frances Tintle | 56 | Head | Supervisor | New Jersey |
| 20 | Margaret Tintle | 55 | Wife | — | Illinois |
| 21 | William Frapoley | Frappley | 52 | Brother-in-law | Laborer | Massachusetts |
| 22 | William Jr Frapoley | Frappley | 16 | Nephew | — | New Jersey |
| 23 | Patricia Frapoley | Frappley | 14 | Niece | — | New Jersey |
| 24 | John L Decker | 54 | Head | Rubber Worker | New Jersey |
| 25 | Agnes Decker | 49 | Wife | — | New Jersey |
| 26 | Ruth Decker | 24 | Daughter | Coiler | New Jersey |
| 27 | Irene Decker | 23 | Daughter | Inspector | New Jersey |
| 28 | Raymond Decker | 21 | Son | Doctors Helper | New Jersey |
| 29 | Helen Decker | 19 | Daughter | Wire Braider | New Jersey |
| 30 | Lawrence Decker | 18 | Son | Helper | New Jersey |
| 31 | John Decker THIS PERSON | 16 | Son | Paper Worker | New Jersey |
| 32 | Mary Decker | 15 | Daughter | — | New Jersey |
| 33 | Edwin Decker | 14 | Son | — | New Jersey |
| 34 | George Decker | 13 | Son | — | New Jersey |
| 35 | Teresa Decker | 11 | Daughter | — | New Jersey |
| 36 | David Decker | 9 | Son | — | New Jersey |
| 37 | Anna May Decker | 8 | Daughter | — | New Jersey |
| 38 | Barbara Decker | 5 | Daughter | — | New Jersey |
| 39 | Phillip Decker | 5 | Son | — | New Jersey |
| 40 | David Haycock | 55 | Head | Truck Driver | 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)