JC
John Carr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kane-County, Illinois
Our Model Tree links this John Carr across the 1920, 1930 and 1940 US Censuses in Kane-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 4-person household.
Age 50
b. ~1890
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kane-County, Illinois |
| Surname | Carr |
| Given Name | John E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | DeKalb |
| Additional Details | |
| Occupation | mech. Eng |
| Industry | mfg. electrical appliances |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2237 |
| Highest Grade | Hs 3 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Mech. Eng |
| Township / Ward | Aurora Twp |
| Est. Birth Year | ~1890 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Myrtle Carr | Daughter | — | 24 | ~1916 |
| John Carr | Head | — | 50 | ~1890 |
| Paul Carr | Son | — | 18 | ~1922 |
| Bernetta Carr | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Kane, Illinois
Head, age 29
Kane, Illinois · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | John E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Occupation | Draftsman |
| Industry | Steel Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Kane, Illinois
Head, age 40
Kane, Illinois · implied b. ~1890 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carr |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 23 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Chief Engineer |
| Industry | Steel Cabinets |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Home Value / Rent | O |
| Radio Set | 12000 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Kane-County, Illinois
Head, age 50
Kane-County, Illinois · implied b. ~1890 — 4 household members
| Surname | Carr |
| Given Name | John E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | DeKalb |
| Occupation | mech. Eng |
| Industry | mfg. electrical appliances |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2237 |
| 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 Carr across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Carr
Head · 1940 · age 50 · b. ~1890 · Illinois
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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 — Kane-County, Illinois
Open full size
1940 US Federal Census — Kane-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00820-00509)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ray Myers | 46 | Head | Waiter | Illinois |
| 2 | Anne Haggs | 75 | Housekeeper | Housekeeper | Germany |
| 3 | William Walker | 25 | Head | Steeplejack | Illinois |
| 4 | Peggy Walker | 20 | Wife | — | Illinois |
| 5 | Charles Walker | 2 | Son | — | Iowa |
| 6 | Sam W Ensing | 74 | Brother | Attendant | Illinois |
| 7 | Charles M Ensing | 62 | Brother | Attendant | Illinois |
| 8 | Ahrenetta Fritz | 75 | Head | — | Missouri |
| 9 | Ralph Devries | 44 | Head | Repairman | Illinois |
| 10 | Mary Devries | 47 | Wife | — | Illinois |
| 11 | Shirley May Devries | 15 | Daughter | — | Illinois |
| 12 | Robert Devries | 13 | Son | — | Illinois |
| 13 | Caroline Devries | 11 | Daughter | — | Illinois |
| 14 | John E Carr THIS PERSON | 50 | Head | Mech. Eng | Illinois |
| 15 | Bernetta Carr | 49 | Wife | — | Illinois |
| 16 | Myrtle Carr | 24 | Daughter | New Worker | Illinois |
| 17 | Paul Carr | 18 | Son | — | Illinois |
| 18 | Carl A Haag | 60 | Head | Farmer | Illinois |
| 19 | Elizabeth M Haag | 59 | Wife | — | Illinois |
| 20 | E. Over Haag | 23 | Son | Mechanic | Illinois |
| 21 | Phyllis Haag | 19 | Daughter | — | Illinois |
| 22 | Geo Schmitt | 55 | Head | Moulder | Iowa |
| 23 | Bertha Schmitt | 54 | Wife | — | Illinois |
| 24 | David Schmitt | 21 | Son | Laborer | Illinois |
| 25 | Doris Schmitt | 18 | Daughter | — | Illinois |
| 26 | Ralph Schmitt | 27 | Head | Layout Man | Illinois |
| 27 | Irene Schmitt | 30 | Wife | — | Illinois |
| 28 | Ralph Schmitt | 5 | Son | — | Illinois |
| 29 | Robert Schmitt | 3 | Son | — | Illinois |
| 30 | Henry Boes | 40 | Head | Wood Worker | Germany |
| 31 | Catherine Boes | 36 | Wife | — | Germany |
| 32 | Henry Boes | 17 | Son | — | Germany |
| 33 | Herbert Boes | 12 | Son | — | Illinois |
| 34 | Hildegard Boes | 9 | Daughter | — | Illinois |
| 35 | Ruth Boes | 7 | Daughter | — | Illinois |
| 36 | Elizabeth Boes | 6 | Daughter | — | Illinois |
| 37 | Carl Jr Haag | 25 | Head | Loco Fireman | Illinois |
| 38 | Bernice Haag | 19 | Wife | — | Illinois |
| 39 | Palmer Valentine | 35 | Head | Salesman | Illinois |
| 40 | Edith Valentine | 29 | Wife | — | Illinois |
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)