JH
John Healy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Healy across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1902), then head of a 7-person household.
Age 38
b. ~1902
Male
Head
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Healy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Conductor |
| Industry | Surface Lines |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 1620 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Occupation | Conductor |
| Township / Ward | Chicago |
| Est. Birth Year | ~1902 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Josephine Healy | Daughter | — | 12 | ~1928 |
| Loretta Healy | Daughter | — | 10 | ~1930 |
| Joan Healy | Daughter | — | 7 | ~1933 |
| Mary Healy | Daughter | — | 14 | ~1926 |
| John Healy | Head | — | 38 | ~1902 |
| John Healy | Son | — | 7 | ~1933 |
| Mary Healy | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Cook, Illinois
Head, age 29
Cook, Illinois · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1920 |
| Age at First Marriage | 24 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Conductor |
| Industry | Street Car |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 35.00 |
| Veteran | No |
| Birthplace (normalized) | irish free state |
1940
Cook-County, Illinois
Head, age 38
Cook-County, Illinois · implied b. ~1902 — 7 household members
| Surname | Healy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Conductor |
| Industry | Surface Lines |
| Class of Worker | PW |
| Hours Worked | 46 |
| Income (1939) | 1620 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
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 Healy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Healy
Head · 1940 · age 38 · b. ~1902 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00953-00644)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Van De Keer | 38 | Head | Chauffeur | Illinois |
| 42 | Zelma Van De Keer | 40 | Wife | — | Illinois |
| 43 | Robert Van De Keer | 18 | Son | — | Illinois |
| 44 | Margaret Van De Keer | 15 | Daughter | — | Illinois |
| 45 | Rosemary Van De Keer | 10 | Daughter | — | Illinois |
| 46 | Albert Drex | 42 | Head | Plasterer | Illinois |
| 47 | Anna Drex | 40 | Wife | — | Illinois |
| 48 | Raymond Drex | 17 | Son | — | Illinois |
| 49 | Lawrence Drex | 16 | Son | — | Illinois |
| 50 | Ernest Fansom | 31 | Head | Counterman | England |
| 51 | Lucille M Fansom | 27 | Wife | — | Illinois |
| 52 | Allan S Fansom | 0 | Son | — | Illinois |
| 53 | George Klonda | 42 | Head | Printer | Illinois |
| 54 | Anna Klonda | 50 | Wife | — | Vienna |
| 55 | Martha Klonda | 24 | Daughter | — | Illinois |
| 56 | George Klonda | 22 | Son | Delivery Boy | Illinois |
| 57 | Norbert Klonda | 19 | Son | News Writer | Illinois |
| 58 | John Chuvich | 45 | Head | Cleaner | Russia |
| 59 | Pauline Chuvich | 40 | Wife | — | Czechoslovakia |
| 60 | Olga Chuvich | 15 | Daughter | — | Illinois |
| 61 | William Chuvich | 13 | Son | — | Illinois |
| 62 | George Ahrens | 44 | Head | Truck Driver | Illinois |
| 63 | Rose Ahrens | 37 | Wife | — | Illinois |
| 64 | Lawrence Ahrens | 18 | Son | — | Illinois |
| 65 | Edna May Ahrens | 13 | Daughter | — | Illinois |
| 66 | Rose Marie Ahrens | 10 | Daughter | — | Illinois |
| 67 | John Healy THIS PERSON | 38 | Head | Conductor | Irish Free State |
| 68 | Mary Healy | 39 | Wife | — | Irish Free State |
| 69 | Mary T Healy | 14 | Daughter | — | Illinois |
| 70 | Josephine Healy | 12 | Daughter | — | Illinois |
| 71 | Loretta Healy | 10 | Daughter | — | Illinois |
| 72 | Joan Healy | 7 | Daughter | — | Illinois |
| 73 | John Healy | 7 | Son | — | Illinois |
| 74 | Daniel Collins | 45 | Head | Policeman | Irish Free State |
| 75 | Marie Collins | 43 | Wife | — | Irish Free State |
| 76 | Daniel Jr Collins | 19 | Son | Dental | Illinois |
| 77 | Maurice Collins | 17 | Son | — | Illinois |
| 78 | John Collins | 14 | Son | — | Illinois |
| 79 | Thomas Collins | 6 | Son | — | Illinois |
| 80 | Milton Kaufmann | 27 | Head | — | Germany |
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)