JC
John Coffey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Coffey across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 9-person household.
Age 60
b. ~1880
Male
Head
Born: Irish Free State
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Coffey |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Freight Checker |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birthplace (normalized) | irish free state |
| Occupation | Freight Checker |
| Township / Ward | Chicago |
| Est. Birth Year | ~1880 |
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 |
|---|---|---|---|---|
| Peter Coffey | Son | — | 19 | ~1921 |
| Daniel Coffey | Son | — | 16 | ~1924 |
| Eillen Coffey | Daughter | — | 16 | ~1924 |
| Julia Coffey | Spouse | — | 52 | ~1888 |
| John Coffey | Head | — | 60 | ~1880 |
| Loretta Coffey | Daughter | — | 15 | ~1925 |
| Mary Coffey | Daughter | — | 22 | ~1918 |
| James Coffey | Son | — | 20 | ~1920 |
| John Coffey | Son | — | 25 | ~1915 |
Census Appearances
1930
Cook, Illinois
Head, age 51
Cook, Illinois · implied b. ~1879 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coffey |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| Naturalization Status | Naturalized |
| Year of Immigration | 1902 |
| Age at First Marriage | 35 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Freight man |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birthplace (normalized) | irish free state |
1940
Cook-County, Illinois
Head, age 60
Cook-County, Illinois · implied b. ~1880 — 9 household members
| Surname | Coffey |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Irish Free State |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Freight Checker |
| Industry | Railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1800 |
| Highest Grade | H-4 |
| 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 Coffey across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Coffey
Head · 1940 · age 60 · b. ~1880 · Illinois
★ You are viewing this record
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-t0627-00938-00056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Doris Edin | 7 | Grand-daughter | — | Illinois |
| 2 | John L. Dinsmore | 48 | Head | Electrical Engineer | New Hampshire |
| 3 | Bertha Dinsmore | 46 | Wife | — | Michigan |
| 4 | Betty Lou Dinsmore | 11 | Daughter | — | Missouri |
| 5 | Michael Tarsitano | 44 | Head | Chauffeur | Italy |
| 6 | Helen Tarsitano | 36 | Wife | — | Italy |
| 7 | Betty Jane Tarsitano | 13 | Daughter | — | Illinois |
| 8 | Marlene Tarsitano | 9 | Daughter | — | Illinois |
| 9 | Jacqueline Tarsitano | 8 | Daughter | — | Illinois |
| 10 | Mercedes Tarsitano | 4 | Daughter | — | Illinois |
| 11 | John Traynick | 78 | Head | — | Bohemia |
| 12 | Catherine Traynick | 40 | Daughter | Water Rep Air Clerk | Illinois |
| 13 | Thomas Ryder | 39 | Head | Mail Carrier | Illinois |
| 14 | Helen Ryder | 40 | Wife | — | Illinois |
| 15 | Dorothy Ann Ryder | 12 | Daughter | — | Illinois |
| 16 | Mary Estelle Ryder | 10 | Daughter | — | Illinois |
| 17 | Thomas Jr. Ryder | 8 | Son | — | Illinois |
| 18 | John Ryder | 2 | Son | — | Illinois |
| 19 | Robert Green | 42 | Head | Machinist | Illinois |
| 20 | Mabel Green | 36 | Wife | — | Illinois |
| 21 | Dorothy Mae Green | 14 | Daughter | — | Illinois |
| 22 | Martin Lorbach | 72 | Head | — | Germany |
| 23 | John J. Coffey THIS PERSON | 60 | Head | Freight Checker | Irish Free State |
| 24 | Julia Coffey | 52 | Wife | — | Irish Free State |
| 25 | John P. Coffey | 25 | Son | Rent Collector | Illinois |
| 26 | Mary Ellen Coffey | 22 | Daughter | Cashier | Illinois |
| 27 | James Coffey | 20 | Son | Assistant Chemist | Illinois |
| 28 | Peter Coffey | 19 | Son | Stock Boy | Illinois |
| 29 | Eillen Coffey | 16 | Daughter | — | Illinois |
| 30 | Daniel Coffey | 16 | Son | Apprentice Pharmacist | Illinois |
| 31 | Loretta Coffey | 15 | Daughter | — | Illinois |
| 32 | Michael Wallace | 56 | Head | Milk Salesman | Canada |
| 33 | Nellie Wallace | 54 | Wife | — | Illinois |
| 34 | Eleanor Wallace | 24 | Daughter | Accountant | Illinois |
| 35 | George Marshall | 39 | Head | Mail Trucker | Illinois |
| 36 | Harriet Marshall | 34 | Wife | Telephone Operator | Illinois |
| 37 | Arthur M. Terry | 58 | Head | Painter And Decorator | Massachusetts |
| 38 | Agnes Terry | 50 | Wife | Telephone Operator | Illinois |
| 39 | Thomas Morse | 46 | Head | Electrical Operator | Illinois |
| 40 | Beatrice Morse | 46 | Wife | — | Illinois |
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)