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John Mccoy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Siskiyou-County, California
Our Model Tree links this John Mccoy across the 1930 and 1940 US Censuses in Siskiyou-County, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Siskiyou-County, California |
| Surname | McCoy |
| Given Name | John L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Siskiyou |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Edgewood Judicial Township |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Peggy Mccoy | Daughter | — | 6 | ~1934 |
| Barbara Mccoy | Daughter | — | 10 | ~1930 |
| Helen Mccoy | Daughter | — | 15 | ~1925 |
| Charles Mccoy | Head | — | 59 | ~1881 |
| Cecil Mccoy | Son | — | 18 | ~1922 |
| John Mccoy | Son | — | 11 | ~1929 |
| William Mccoy | Son | — | 24 | ~1916 |
| Bertha Mccoy | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Siskiyou, California
Son, age 1
Siskiyou, California · implied b. ~1929 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | John H |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Texas |
| Mother's Birthplace | Utah |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Siskiyou-County, California
Son, age 11
Siskiyou-County, California · implied b. ~1929 — 8 household members
| Surname | McCoy |
| Given Name | John L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Siskiyou |
| Highest Grade | No 5 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Mccoy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mccoy
Son · 1940 · age 11 · b. ~1929 · California
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Sibling
Cecil Mccoy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mccoy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mccoy
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peggy Mccoy
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Mccoy
Sibling · 1940 · age 10
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 — Siskiyou-County, California
Open full size
1940 US Federal Census — Siskiyou-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00346-00121)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edwin H. Sr. Buscombe | 48 | Head | Lumber Grader | California |
| 2 | Edwin H. Jr. Buscombe | 21 | Son | Farmer | California |
| 3 | Evelyn M. Buscombe | 18 | Daughter | — | California |
| 4 | Charles T. Mccoy | 59 | Head | Gold Miner | Texas |
| 5 | Bertha E. Mccoy | 41 | Wife | Laundress | Utah |
| 6 | William N. Mccoy | 24 | Son | Truck Driver | California |
| 7 | Cecil J. Mccoy | 18 | Son | Laborer | California |
| 8 | Helen P. Mccoy | 15 | Daughter | — | California |
| 9 | John L. Mccoy THIS PERSON | 11 | Son | — | California |
| 10 | Barbara J. Mccoy | 10 | Daughter | — | California |
| 11 | Peggy D. Mccoy | 6 | Daughter | — | California |
| 12 | Gustave V. Nelsen | 48 | Head | Farmer | California |
| 13 | Katherine Nelsen | 49 | Wife | — | Germany |
| 14 | Wilma Schwartz | 14 | Daughter | — | California |
| 15 | John Lacey | 41 | Head | Farm Laborer | Oregon |
| 16 | Tom A. Mcmillan | 35 | Head | Farm Manager | Canada-English |
| 17 | Margaret C. Mcmillan | 33 | Wife | — | California |
| 18 | Vernon F. Mcmillan | 10 | Son | — | California |
| 19 | Herman Lipper | 44 | Head | Farm Laborer | Pennsylvania |
| 20 | Michael Grant | 64 | Head | Farm Laborer | California |
| 21 | Larrin D. Jensen | 51 | Head | Farmer | Oregon |
| 22 | Ruby C. Jensen | 46 | Wife | — | Oregon |
| 23 | Evelyn M. Jensen | 17 | Daughter | — | California |
| 24 | Too Many Lines Left Jensen | None | — | — | — |
| 25 | Arthur Cave | 22 | Head | Laborer | Iowa |
| 26 | Rose C. Anderson | 19 | Sister | — | Iowa |
| 27 | Harold Anderson | 23 | Brother-in-law | Laborer | Oregon |
| 28 | Constance Pitts | 21 | Sister | — | Iowa |
| 29 | Kenneth Detraft | 20 | Cousin | Miner | Missouri |
| 30 | William C. Mcpherson | 59 | Head | Operator | California |
| 31 | Jennie E. Mcpherson | 50 | Wife | Attendant | Missouri |
| 32 | Donald C. Cleland | 21 | Head | Milk Tester | California |
| 33 | Velma Cleland | 19 | Wife | — | California |
| 34 | Henry A. Craig | 79 | Head | — | Same House |
| 35 | Mary A. Craig | 76 | Wife | — | Same House |
| 36 | Manuel Silvera | 50 | Head | Farmer | Azore Islands |
| 37 | Louisa Silvera | 47 | Wife | Farmer | Azore Islands |
| 38 | Enos L. Cleland | 44 | Head | Dairy Foreman | Oregon |
| 39 | Bertha Cleland | 42 | Wife | — | Tennessee |
| 40 | Lawrence Cleland | 20 | Son | Carpenter | California |
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)