JK
John Kirk — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Kirk across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a head (b.~1908), then head of a 6-person household.
Age 32
b. ~1908
Male
Head
Born: California
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Kirk |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Truck driver |
| Industry | Oil company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1680 |
| Highest Grade | H-4 |
| 1935 Residence | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Truck Driver |
| Township / Ward | Antelope Township |
| Est. Birth Year | ~1908 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Kirk | Head | — | 32 | ~1908 |
| Verne Kirk | Spouse | — | 26 | ~1914 |
| Joan Kirk | Daughter | — | 5 | ~1935 |
| John Kirk | Son | — | 2 | ~1938 |
| Marilyn Kirk | Daughter | — | 7 | ~1933 |
| Grace Kirk | Daughter | — | 1 | ~1939 |
Census Appearances
1930
Los Angeles, …
Son, age 22
Los Angeles, California · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirk |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | England |
| Mother's Birthplace | Pennsylvania |
| Occupation | Farm Laborer |
| Industry | Alfalfa Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Head, age 32
Los-Angeles-County, California · implied b. ~1908 — 6 household members
| Surname | Kirk |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Los Angeles |
| Occupation | Truck driver |
| Industry | Oil company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1680 |
| Highest Grade | H-4 |
| 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 Kirk across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kirk
Head · 1940 · age 32 · b. ~1908 · California
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00219-00055)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Erwin Lowden | 59 | Head | Laborer | Connecticut |
| 2 | C. J. Wells | 62 | Head | Laborer | Wisconsin |
| 3 | W. H. Emerson | 53 | Head | Laborer | Maine |
| 4 | Earline Emerson | 47 | Wife | — | Indiana |
| 5 | Robert Patterson | 47 | Head | Laborer | Ireland |
| 6 | Sarah Patterson | 47 | Wife | — | Ireland |
| 7 | Martha Patterson | 20 | Daughter | Swimming Teacher | California |
| 8 | Doil Carpenter | 20 | Hired hand | Laborer | Arkansas |
| 9 | George Blakey | 56 | Head | Laborer | New York |
| 10 | Ada Blakey | 67 | Wife | — | New York |
| 11 | Letha M. Blakey | 25 | Daughter | — | New York |
| 12 | H. H. Grestin | 70 | Head | Laborer | Ohio |
| 13 | Mike Schaffer | 32 | Head | Laborer | New York |
| 14 | Tony Schaffer | 30 | Brother | Laborer | California |
| 15 | John H. Kirk THIS PERSON | 32 | Head | Truck Driver | California |
| 16 | Verne Kirk | 26 | Wife | — | Washington |
| 17 | Marilyn Kirk | 7 | Daughter | — | California |
| 18 | Joan Kirk | 5 | Daughter | — | California |
| 19 | John Kirk | 2 | Son | — | California |
| 20 | Grace Kirk | 1 | Daughter | — | California |
| 21 | Elza Shaffer | 62 | Head | Laborer | Illinois |
| 22 | Gertrude Shaffer | 58 | Wife | — | Illinois |
| 23 | John R. Demuth | 80 | Head | — | Switzerland |
| 24 | Jessie Elias | 55 | Head | Laborer | Mexico |
| 25 | Lugara Elias | 55 | Wife | — | Mexico |
| 26 | Lucio Jr. Elias | 25 | Son | Laborer | Mexico |
| 27 | Kathleen Elias | 16 | Daughter | — | Colorado |
| 28 | Augustine Elias | 24 | Son | Laborer | Mexico |
| 29 | Jessie Elias | 21 | Son | Laborer | California |
| 30 | Delphine Elias | 18 | Daughter | — | California |
| 31 | Albert Sorenson | 65 | Head | Laborer | California |
| 32 | Grace H. Sorenson | 55 | Wife | — | California |
| 33 | Walter L. Holst | 63 | Head | Farmer | California |
| 34 | Edith B. Holst | 65 | Wife | — | Kansas |
| 35 | William Cisell | 61 | Head | Laborer | Missouri |
| 36 | Jack Sessions | 25 | Head | Laborer | Texas |
| 37 | Kathryn Sessions | 22 | Wife | — | Texas |
| 38 | Jess Mcmichael | 20 | Brother-in-law | Laborer | Texas |
| 39 | Melvin Estep | 22 | Lodger | Laborer | Oklahoma |
| 40 | Wakamiya Yasuichi | 44 | Head | Farmer | Japan |
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)