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John Joyce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Joyce across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1906), then head of a 8-person household.
Age 34
b. ~1906
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Laborer |
| Industry | Dept. of Street |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1906 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Alice Joyce | Daughter | — | 6 | ~1934 |
| Patrick Joyce | Son | — | 3 | ~1937 |
| Thomas Joyce | Son | — | 4 | ~1936 |
| John Joyce | Son | — | 9 | ~1931 |
| John Joyce | Head | — | 34 | ~1906 |
| Nora Joyce | Spouse | — | 32 | ~1908 |
| Anthony Joyce | Son | — | 7 | ~1933 |
| Mary Joyce | Daughter | — | 8 | ~1932 |
Census Appearances
1930
Cook, Illinois
Head, age 25
Cook, Illinois · implied b. ~1905 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Laborer |
| Industry | Gas Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 34
Cook-County, Illinois · implied b. ~1906 — 8 household members
| Surname | Joyce |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Occupation | Laborer |
| Industry | Dept. of Street |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| 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 Joyce across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Joyce
Head · 1940 · age 34 · b. ~1906 · 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
39 people indexed on this census page (nara:1940:m-t0627-01023-00155)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Denis Connolly | 5 | Son | — | Illinois |
| 42 | Peter Connolly | 3 | Son | — | Illinois |
| 43 | James Connolly | 1 | Son | — | Illinois |
| 44 | Patrick Connolly | 0 | Son | — | Illinois |
| 45 | John Joyce THIS PERSON | 34 | Head | Laborer | Illinois |
| 46 | Nora Joyce | 32 | Wife | — | Irish Free State |
| 47 | John Joyce | 9 | Son | — | Illinois |
| 48 | Mary Joyce | 8 | Daughter | — | Illinois |
| 49 | Anthony Joyce | 7 | Son | — | Illinois |
| 50 | Alice Joyce | 6 | Daughter | — | Illinois |
| 51 | Thomas Joyce | 4 | Son | — | Illinois |
| 52 | Patrick Joyce | 3 | Son | — | Illinois |
| 53 | Annie Klein | 78 | Head | — | Illinois |
| 54 | Fred Klein | 44 | Son | Grave Digger | Illinois |
| 55 | Charles Klein | 54 | Son | Electrician | Illinois |
| 56 | Millie Robinson | 61 | Daughter | Housework | Illinois |
| 57 | Bonnie Robinson | 24 | Granddaughter | Housework | Illinois |
| 58 | Thomas J. Klein | 58 | Head | Salesman | Illinois |
| 59 | Jean Klein | 58 | Wife | — | Illinois |
| 60 | Mary Klein | 84 | Mother | — | Illinois |
| 62 | William Clausen | 39 | Head | Salesman | Illinois |
| 63 | Adeline Clausen | 43 | Wife | — | Illinois |
| 64 | Kathryn Clausen | 37 | Sister | Book Keeper | Illinois |
| 65 | Joseph Sveatberg | 58 | Head | Interior Decorator | Sweden |
| 66 | Emelia Sveatberg | 58 | Wife | — | Illinois |
| 67 | Joseph Klein | 52 | Head | Auditor | Illinois |
| 68 | Helen Klein | 51 | Wife | — | Illinois |
| 69 | Mary Klein | 29 | Daughter | Secretary | Illinois |
| 70 | Frank Klein | 26 | Son | Truck Driver | Illinois |
| 71 | Betty Klein | 23 | Daughter | Stenographer | Illinois |
| 72 | Dorothy Klein | 19 | Daughter | — | Illinois |
| 73 | Joseph Klein | 14 | Son | — | Illinois |
| 74 | Helen Klein | 11 | Daughter | — | Illinois |
| 75 | Elmer Kramer | 32 | Head | Warehouse Manager | Illinois |
| 76 | Margaret Kramer | 32 | Wife | — | Illinois |
| 77 | Marjorie Kramer | 5 | Daughter | — | Illinois |
| 78 | Robert Kramer | 4 | Son | — | Illinois |
| 79 | Kenneth Kramer | 2 | Son | — | Illinois |
| 80 | Cornelius Baber | 58 | Head | Office Clerk | 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)