JK
John Kirk — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clinton-County, Indiana
Our Model Tree links this John Kirk across the 1930 and 1940 US Censuses in Clinton-County, Indiana (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Indiana |
| Surname | Kirk |
| Given Name | John Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Crawfordsville |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Laborer |
| Industry | Odd jobs |
| Class of Worker | PW |
| Income (1939) | 200 |
| Highest Grade | No 6 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Laborer |
| Township / Ward | Frankfort |
| Est. Birth Year | ~1921 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Patricia Kirk | Daughter | — | 3 | ~1937 |
| Theresa Kirk | Daughter | — | 6 | ~1934 |
| David Kirk | Son | — | 8 | ~1932 |
| William Kirk | Son | — | 15 | ~1925 |
| Homer Kirk | Head | — | 53 | ~1887 |
| Marie Kirk | Spouse | — | 44 | ~1896 |
| Thomas Kirk | Son | — | 12 | ~1928 |
| John Kirk | Son | — | 19 | ~1921 |
| Helen Kirk | Daughter | — | 13 | ~1927 |
Census Appearances
1930
Clinton, Indiana
Son, age 9
Clinton, Indiana · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirk |
| Given Name | John Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Clinton-County, Indiana
Son, age 19
Clinton-County, Indiana · implied b. ~1921 — 9 household members
| Surname | Kirk |
| Given Name | John Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Crawfordsville |
| 1935 Residence (County) | Montgomery |
| Occupation | Laborer |
| Industry | Odd jobs |
| Class of Worker | PW |
| Income (1939) | 200 |
| Highest Grade | No 6 |
| 1935 Residence | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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
Son · 1940 · age 19 · b. ~1921 · Indiana
★ You are viewing this record
Sibling
Patricia Kirk
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Kirk
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Kirk
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Kirk
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Kirk
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kirk
Sibling · 1940 · age 13
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 — Clinton-County, Indiana
Open full size
1940 US Federal Census — Clinton-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01033-00075)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Samuel Thompson | 23 | Son | — | Alabama |
| 42 | Kenneth Cameron | 27 | Head | Surveyor | Indiana |
| 43 | Mabel Cameron | 23 | Wife | — | Indiana |
| 44 | Harry R. Laverty | 57 | Head | Night Watchman | Indiana |
| 45 | Olive L. Laverty | 47 | Wife | — | Indiana |
| 46 | S. Bert Hannum | 45 | Head | Blacksmith | Indiana |
| 47 | Edith Hannum | 53 | Wife | — | Indiana |
| 48 | Eva Perry | 70 | Head | — | Indiana |
| 49 | Celia Perry | 49 | Daughter | — | Kansas |
| 50 | George Redd | 65 | Head | Conductor | Indiana |
| 51 | Rosa Redd | 63 | Wife | — | Indiana |
| 52 | Joe H. Traylor | 48 | Head | Fireman | Missouri |
| 53 | Gladys Traylor | 44 | Wife | — | Illinois |
| 54 | Lillian Isabelle Traylor | 23 | Daughter | Saleslady | Indiana |
| 55 | Mildred Mae Traylor | 20 | Daughter | Beauty Operator | Illinois |
| 56 | Shirley Traylor | 10 | Daughter | — | Illinois |
| 57 | Charles K. Snyder | 39 | Head | Laborer | Indiana |
| 58 | Leuna Shelley | 35 | Head | — | Kentucky |
| 59 | William E. Shelley | 19 | Brother | Laborer | Indiana |
| 60 | Robert E. Shelley | 15 | Brother | — | Indiana |
| 61 | Annabelle Shelley | 13 | Sister | — | Indiana |
| 62 | Kathleen Shelley | 11 | Sister | — | Indiana |
| 63 | Harold R. Stern | 29 | Head | Laborer | Indiana |
| 64 | Mary Stern | 27 | Wife | — | Indiana |
| 65 | Joyce Stern | 5 | Daughter | — | Indiana |
| 66 | Phyllis J. Krewson | 7 | Relative | — | Indiana |
| 67 | Homer Kirk | 53 | Head | Machinist | Indiana |
| 68 | Marie Kirk | 44 | Wife | — | Indiana |
| 69 | John Francis Kirk THIS PERSON | 19 | Son | Laborer | Indiana |
| 70 | William J. Kirk | 15 | Son | — | Indiana |
| 71 | Helen Kirk | 13 | Daughter | — | Indiana |
| 72 | Thomas R. Kirk | 12 | Son | — | Indiana |
| 73 | David W. Kirk | 8 | Son | — | Indiana |
| 74 | Theresa A. Kirk | 6 | Daughter | — | Indiana |
| 75 | Patricia J. Kirk | 3 | Daughter | — | Indiana |
| 76 | Mrs. Katherine Lamb | 67 | Head | — | Indiana |
| 77 | A. Y. Love | 72 | Lodger | — | Indiana |
| 78 | Harold A. Barrigus | 28 | Head | Laborer | Indiana |
| 79 | Delores Barrigus | 29 | Wife | — | Indiana |
| 80 | James A. Barrigus | 1 | Son | — | Indiana |
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)