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James Mckay — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Morris-County, New Jersey
Our Model Tree links this James Mckay across the 1930 and 1940 US Censuses in Morris-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Morris-County, New Jersey |
| Surname | McKay |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Mine Hill |
| 1935 Residence (County) | Morris |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Mine Hill |
| Est. Birth Year | ~1925 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Delores Mckay | Daughter | — | 24 | ~1916 |
| Fred Mckay | Head | — | 54 | ~1886 |
| William Mckay | Son | — | 17 | ~1923 |
| Fred Mckay | Son | — | 26 | ~1914 |
| John Mckay | Son | — | 20 | ~1920 |
| Beatrice Mckay | Daughter | — | 28 | ~1912 |
| Donald Mckay | Son | — | 22 | ~1918 |
| Janette Mckay | Daughter | — | 18 | ~1922 |
| Jane Mckay | Spouse | — | 52 | ~1888 |
| James Mckay | Son | — | 15 | ~1925 |
Census Appearances
Son, age 4
Morris, New Jersey · implied b. ~1926 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Michigan |
| Mother's Birthplace | New Jersey |
| Can Read/Write | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Morris-County, New …
Son, age 15
Morris-County, New Jersey · implied b. ~1925 — 10 household members
| Surname | McKay |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Mine Hill |
| 1935 Residence (County) | Morris |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 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 James Mckay across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mckay
Son · 1940 · age 15 · b. ~1925 · New Jersey
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Sibling
Donald Mckay
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mckay
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mckay
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beatrice Mckay
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delores Mckay
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Janette Mckay
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Mckay
Sibling · 1940 · age 26
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-t0627-02371-01104)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Dona Pruella Reed | 12 | Daughter | — | Michigan |
| 2 | Sharon Mae Reed | 7 | Daughter | — | New Jersey |
| 3 | Russell Marvin Reed | 5 | Son | — | New Jersey |
| 4 | Beverley Ann Reed | 0 | Daughter | — | New Jersey |
| 5 | Stanley Freela | 29 | Head | Truck Driver | New York |
| 6 | Anna Freela | 24 | Wife | — | New York |
| 7 | Stanley Jr Freela | 4 | Son | — | New Jersey |
| 8 | Theodore Freela | 1 | Son | — | New Jersey |
| 9 | John Slingers | 30 | Head | Blacksmith | Pennsylvania |
| 10 | Julie Slingers | 27 | Wife | — | Newfoundland |
| 11 | Mary Louise Slingers | 5 | Daughter | — | Pennsylvania |
| 12 | John Brian Slingers | 1 | Son | — | New Jersey |
| 13 | John Popovitch | 24 | Head | Driller | Pennsylvania |
| 14 | Helen Popovitch | 21 | Wife | — | Pennsylvania |
| 15 | Irene Hacko | 13 | Sister | — | Pennsylvania |
| 16 | Jan Williams | 11 | Niece | — | New York |
| 17 | Ralph Estanzart | 42 | Head | Machinist | New York |
| 18 | Lilith Facteau | 44 | Lodger | Housekeeper | New York |
| 19 | George Heaver | 68 | Head | Spinner | New Jersey |
| 20 | Annie Heaver | 53 | Wife | Winder | New Jersey |
| 21 | William Heaver | 30 | Son | Spinner | New Jersey |
| 22 | Foster Clark | 46 | Lodger | Furnace Man | New Jersey |
| 23 | Dan Nichols | 46 | Head | Tinsmith | New Jersey |
| 24 | Daisy Jane Nichols | 46 | Wife | — | New Jersey |
| 25 | Lois Nichols | 19 | Daughter | Maid | New Jersey |
| 26 | Jack Nichols | 16 | Son | — | New Jersey |
| 27 | Fred Mckay | 54 | Head | Machinist | Michigan |
| 28 | Jane Mckay | 52 | Wife | — | New Jersey |
| 29 | Beatrice Mckay | 28 | Daughter | Spinner | Pennsylvania |
| 30 | Fred Jr Mckay | 26 | Son | Laborer | New Jersey |
| 31 | Delores Mckay | 24 | Daughter | Spinner | New Jersey |
| 32 | Donald Mckay | 22 | Son | Laborer | New Jersey |
| 33 | John Mckay | 20 | Son | Laborer | New Jersey |
| 34 | Janette Mckay | 18 | Daughter | — | New Jersey |
| 35 | William Mckay | 17 | Son | — | New Jersey |
| 36 | James Mckay THIS PERSON | 15 | Son | — | New Jersey |
| 37 | Martin Szoke | 68 | Head | Farmer | Hungary |
| 38 | Theresa Szoke | 60 | Wife | — | Hungary |
| 39 | John Szoke | 31 | Son | Repair Man | New Jersey |
| 40 | Stephen Szoke | 27 | Son | Repair Man | New Jersey |
Related Census Records
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)