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John Mccormick — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Mccormick across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 4-person household.
Age 62
b. ~1868
Male
Head
Born: England
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 27 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Laborer |
| Industry | Stone Quarry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 1000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Laborer |
| Township / Ward | Town Of Lemont |
| Est. Birth Year | ~1868 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Frank Mccormick | Daughter | — | 34 | ~1896 |
| John Mccormick | Head | — | 62 | ~1868 |
| William Bambush | Other | — | 46 | ~1884 |
| Mary Mccormick | Spouse | — | 72 | ~1858 |
Census Appearances
1920
Cook, Illinois
Other, age 50
Cook, Illinois · implied b. ~1870 — 44 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | Joseph |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Single |
| Birthplace | England |
| Year of Immigration | 1882 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Laborer |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1890 |
| Birthplace (normalized) | england |
1930
Cook, Illinois
Head, age 62
Cook, Illinois · implied b. ~1868 — 4 household members
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1882 |
| Age at First Marriage | 27 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Laborer |
| Industry | Stone Quarry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 1000 |
| Radio Set | R |
| Veteran | No |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Cook-County, Illinois
Other, age 75
Cook-County, Illinois · implied b. ~1865 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Father |
| Sex | M |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | England |
| 1935 Residence (City) | Lemont Twp |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Mccormick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Mccormick
Head · 1930 · age 62 · b. ~1868 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel500:1027)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Blum | 47 | Head | Laborer | Illinois |
| 2 | Margaret Blum | 37 | Wife | — | Ireland |
| 3 | Eunice Blum | 16 | Daughter | — | Illinois |
| 4 | Lois Blum | 13 | Daughter | — | Illinois |
| 5 | Mary Blum | 8 | Daughter | — | Illinois |
| 6 | George Blum | 7 | Son | — | Illinois |
| 7 | Betty Blum | 5 | Daughter | — | Illinois |
| 8 | Lawrence Blum | 4 | Son | — | Illinois |
| 9 | Bernice Blum | 1 | Son | — | Illinois |
| 10 | Caroline Eckman | 70 | Head | — | Sweden |
| 11 | Herbert Eckman | 24 | Son | Laborer | Illinois |
| 12 | Myrtle Eckman | 35 | Daughter-in-law | Laborer | Illinois |
| 13 | Honora Shea | 75 | Head | — | Ireland |
| 14 | Timothy Shea | 50 | Son | Truck Driver | Illinois |
| 15 | Lola Arndt | 6 | Boarder | — | Illinois |
| 16 | Joseph Heaner | 58 | Head | Laborer | Italy |
| 17 | Mary Heaner | 40 | Wife | — | Italy |
| 18 | Stella Heaner | 11 | Daughter | — | Illinois |
| 19 | Louis Mcguire | 30 | Head | Laborer | Illinois |
| 20 | Nona Mcguire | 31 | Wife | — | Illinois |
| 21 | Eileen Mcguire | 5 | Daughter | — | Illinois |
| 22 | John Krause | 55 | Head | Janitor | Jugo-Slavia |
| 23 | Mary Krause | 46 | Wife | — | Jugo-Slavia |
| 24 | Patrick Mcgraw | 69 | Head | Foreman | Illinois |
| 25 | Eileen Mcgraw | 25 | Daughter | — | Illinois |
| 26 | Raymond Mcgraw | 23 | Son | Clerk Tel | Illinois |
| 27 | William Mccutcheon | 58 | Head | — | Pennsylvania |
| 28 | Margaret Mccutcheon | 58 | Wife | — | Illinois |
| 29 | Edward Mahoney | 45 | Brother | Laborer | Illinois |
| 30 | Elizabeth Schrader | 44 | Housekeeper | Housekeeper | Illinois |
| 31 | Frank Lucas | 68 | Head | — | Illinois |
| 32 | Margaret Lucas | 62 | Wife | — | Illinois |
| 33 | James Hewitt | 74 | Head | — | Illinois |
| 34 | Maria Hewitt | 64 | Wife | — | Iowa |
| 35 | Leonard Hewitt | 29 | Son | Laborer | Illinois |
| 36 | Ruth Hewitt | 19 | Daughter-in-law | — | Illinois |
| 37 | Joseph Langer | 75 | Head | — | Germany |
| 38 | Nellie Langer | 75 | Wife | — | Sweden |
| 39 | Catherine Langer | 31 | Daughter | Saleslady | Illinois |
| 40 | Gertrude Langer | 11 | Grandchild | — | Illinois |
| 41 | Charles Langer | 35 | Son | Laborer | Illinois |
| 42 | Patrick Dwyer | 60 | Head | Steam Engineer | Ireland |
| 43 | Ned Dwyer | 56 | Brother | Steam Engineer | Ireland |
| 44 | Margaret Dwyer | 41 | Step-sister | — | Illinois |
| 45 | John Mccormick THIS PERSON | 62 | Head | Laborer | England |
| 46 | Mary Mccormick | 72 | Wife | — | Vermont |
| 47 | Frank Mccormick | 34 | Daughter | — | Illinois |
| 48 | William Bambush | 46 | Step-son | Engineer | Illinois |
| 49 | Thomas Shea | 59 | Head | — | Pennsylvania |
| 50 | Mary Shea | 55 | Wife | Laundry | Ireland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)