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John Kaufman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Macon-County, Illinois
Our Model Tree links this John Kaufman across the 1930 and 1940 US Censuses in Macon-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Macon-County, Illinois |
| Surname | Kaufman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Additional Details | |
| Occupation | Apprentice Machinist |
| Industry | Bakelite |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1114 |
| Highest Grade | Hs 3 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Apprentice Machinist |
| Township / Ward | Decatur City |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| Fred Kaufman | Head | — | 40 | ~1900 |
| Mary Kaufman | Daughter | — | 16 | ~1924 |
| John Kaufman | Son | — | 20 | ~1920 |
| Ruth Kaufman | Daughter | — | 8 | ~1932 |
| Clarence Kaufman | Other | — | 46 | ~1894 |
| Ruth Kaufman | Spouse | — | 38 | ~1902 |
| Fred Kaufman | Son | — | 13 | ~1927 |
| Ella Kaufman | Daughter | — | 17 | ~1923 |
| Clarence Kaufman | Son | — | 12 | ~1928 |
Census Appearances
1930
Macon, Illinois
Son, age 10
Macon, Illinois · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kaufman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Macon-County, Illinois
Son, age 20
Macon-County, Illinois · implied b. ~1920 — 9 household members
| Surname | Kaufman |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Decatur |
| 1935 Residence (County) | Macon |
| Occupation | Apprentice Machinist |
| Industry | Bakelite |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1114 |
| Highest Grade | Hs 3 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 20 · b. ~1920 · Illinois
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Sibling
Ella Kaufman
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Kaufman
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Kaufman
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Kaufman
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kaufman
Sibling · 1940 · age 16
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 — Macon-County, Illinois
Open full size
1940 US Federal Census — Macon-County, Illinois
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00845-00062)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Finis Lancaster | 45 | Head | Proprietor | Illinois |
| 2 | Anna Lancaster | 35 | Wife | — | England |
| 4 | Nora Lee | 41 | Head | — | Tennessee |
| 5 | Vandal Lee | 18 | Son | Soda Bottler | Tennessee |
| 6 | Clifton Lee | 15 | Son | — | Tennessee |
| 7 | Doris Lee | 9 | Daughter | — | Illinois |
| 8 | Genevieve Lee | 8 | Daughter | — | Illinois |
| 9 | Merle Lee | 4 | Son | — | Illinois |
| 10 | Elmer C Hawkins | 36 | Head | Carrier | Illinois |
| 11 | Connie Hawkins | 35 | Wife | — | Illinois |
| 12 | Richard F Hawkins | 12 | Son | — | Illinois |
| 13 | Barbara Hawkins | 9 | Daughter | — | Illinois |
| 14 | Charles A Lovelace | 67 | Head | — | Illinois |
| 15 | Emma Lovelace | 67 | Wife | — | Illinois |
| 16 | Norman Clark | 33 | Head | Deodorizer | Illinois |
| 17 | Louise Clark | 29 | Wife | — | Illinois |
| 18 | John Clark | 10 | Son | — | Illinois |
| 19 | Jesse Clark | 7 | Son | — | Illinois |
| 21 | Fred P Kaufman | 40 | Head | Sausage Maker Helper | Illinois |
| 22 | Ruth Kaufman | 38 | Wife | — | Illinois |
| 23 | John Kaufman THIS PERSON | 20 | Son | Apprentice Machinist | Illinois |
| 24 | Ella Kaufman | 17 | Daughter | Saleslady | Illinois |
| 25 | Mary Kaufman | 16 | Daughter | Saleslady | Illinois |
| 26 | Fred Kaufman | 13 | Son | — | Illinois |
| 27 | Clarence Kaufman | 12 | Son | — | Illinois |
| 28 | Ruth Kaufman | 8 | Daughter | — | Illinois |
| 29 | Clarence Kaufman | 46 | Brother | Sausage Maker Foreman | Illinois |
| 30 | Arthur J Beck | 57 | Head | Clerk | Illinois |
| 31 | Flota Beck | 53 | Wife | — | West Virginia |
| 32 | Sarah Lindsay | 75 | Mother-in-law | — | West Virginia |
| 33 | James Ray Williams | 56 | Head | Engine Foreman | Illinois |
| 34 | Dora Williams | 53 | Wife | — | Illinois |
| 35 | Robert Williams | 27 | Son | Switchman | Illinois |
| 36 | Robert Williams | 16 | Son | — | Illinois |
| 37 | Norma Fowler | 29 | Daughter | — | Illinois |
| 38 | Delores Fowler | 9 | Granddaughter | — | Illinois |
| 39 | James Fowler | 8 | Grandson | — | Illinois |
| 40 | James Thompson | 49 | Head | Stopper | England |
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)