JK
John Kaufman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Miami-County, Kansas
Our Model Tree links this John Kaufman across the 1930 and 1940 US Censuses in Miami-County, Kansas (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 12-person household.
Age 19
b. ~1921
Male
Son
Born: Kansas
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Miami-County, Kansas |
| Surname | Kaufman |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Miami |
| Additional Details | |
| Occupation | Laborer |
| Industry | Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 988 |
| Highest Grade | 8 |
| 1935 Residence | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Laborer |
| Township / Ward | Somerset Lines 4180 |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Kenneth Kaufman | Son | — | 15 | ~1925 |
| William Kaufman | Son | — | 23 | ~1917 |
| Ida Kaufman | Spouse | — | 43 | ~1897 |
| Paul Kaufman | Son | — | 1 | ~1939 |
| William Kaufman | Head | — | 48 | ~1892 |
| Evelyn Kaufman | Daughter | — | 5 | ~1935 |
| John Kaufman | Son | — | 19 | ~1921 |
| Harry Kaufman | Son | — | 13 | ~1927 |
| Ray Kaufman | Son | — | 8 | ~1932 |
| Cecilia Kaufman | Daughter | — | 15 | ~1925 |
| Ralph Kaufman | Son | — | 12 | ~1928 |
| James Kaufman | Son | — | 21 | ~1919 |
Census Appearances
1930
Miami, Kansas
Son, age 9
Miami, Kansas · implied b. ~1921 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kaufman |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Kansas |
| Can Read/Write | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Miami-County, Kansas
Son, age 19
Miami-County, Kansas · implied b. ~1921 — 12 household members
| Surname | Kaufman |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Kansas |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Miami |
| Occupation | Laborer |
| Industry | Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 988 |
| Highest Grade | 8 |
| 1935 Residence | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Kaufman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kaufman
Son · 1940 · age 19 · b. ~1921 · Kansas
★ You are viewing this record
Sibling
Paul Kaufman
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Kaufman
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Kaufman
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecilia Kaufman
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Kaufman
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Kaufman
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Kaufman
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ray Kaufman
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Kaufman
Sibling · 1940 · age 5
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 — Miami-County, Kansas
Open full size
1940 US Federal Census — Miami-County, Kansas
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01246-00253)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Velma L. Scott | 4 | Daughter | — | Kansas |
| 42 | Carol L. Scott | 3 | Daughter | — | Kansas |
| 43 | John A. Blanchard | 39 | Head | Laborer | Missouri |
| 44 | Helen S. Blanchard | 36 | Wife | — | Oklahoma |
| 45 | Beulah A. Blanchard | 13 | Daughter | — | Missouri |
| 46 | Rose M. Blanchard | 11 | Daughter | — | Kansas |
| 47 | John H. Blanchard | 8 | Son | — | Kansas |
| 48 | Joan L. Blanchard | 3 | Daughter | — | Kansas |
| 49 | Justin H. Howard | 64 | Father | Carpenter | Missouri |
| 50 | Eugene C. Bowman | 67 | Head | Operator | Kansas |
| 51 | Mary J. Bowman | 64 | Wife | — | Kansas |
| 52 | Chris W. Howard | 40 | Head | Laborer | Missouri |
| 53 | Edna L. Howard | 30 | Wife | — | Kansas |
| 54 | Charles W. Howard | 5 | Son | — | Kansas |
| 55 | James L. Howard | 3 | Son | — | Kansas |
| 56 | Lanella M. Howard | 1 | Daughter | — | Kansas |
| 57 | Elmer Megan | 61 | Head | Housekeeper | Kansas |
| 58 | Lavinia Megan | 83 | Mother | — | Missouri |
| 59 | Thomas L. Hume | 73 | Head | — | Missouri |
| 60 | Maud Hume | 63 | Wife | — | Illinois |
| 61 | David R. Goldman | 61 | Head | Farmer | Louisiana |
| 62 | Ida J. Goldman | 49 | Wife | — | Missouri |
| 63 | Evelyn W. Goldman | 18 | Daughter | Laborer | Kansas |
| 64 | William J. Rowden | 63 | Head | Laborer | Missouri |
| 65 | Mary E. Rowden | 71 | Wife | — | Indiana |
| 66 | William L. Kaufman | 48 | Head | Laborer | Missouri |
| 67 | Ida J. Kaufman | 43 | Wife | — | Kansas |
| 68 | William J. Kaufman | 23 | Son | Laborer | Missouri |
| 69 | James A. Kaufman | 21 | Son | Laborer | Kansas |
| 70 | John G. Kaufman THIS PERSON | 19 | Son | Laborer | Kansas |
| 71 | Kenneth D. Kaufman | 15 | Son | Laborer | Kansas |
| 72 | Cecilia C. Kaufman | 15 | Daughter | — | Kansas |
| 73 | Harry B. Kaufman | 13 | Son | — | Kansas |
| 74 | Ralph J. Kaufman | 12 | Son | — | Kansas |
| 75 | Ray C. A. Kaufman | 8 | Son | — | Kansas |
| 76 | Evelyn M. Kaufman | 5 | Daughter | — | Kansas |
| 77 | Paul M. Kaufman | 1 | Son | — | Kansas |
| 78 | John G. Zerbert | 71 | Head | Farmer | Kansas |
| 79 | Laura A. Zerbert | 64 | Wife | — | Kansas |
| 80 | Son Louis | None | M | Railroad | — |
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)