JH
James Hoffman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this James Hoffman across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 14-person household.
Age 18
b. ~1922
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Hoffman |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | No No No No |
| Industry | S |
| Class of Worker | 6 |
| Hours Worked | 6 |
| Highest Grade | No H3 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | No No No No |
| Township / Ward | Chicago |
| Est. Birth Year | ~1922 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Lenard Hoffman | Son | — | 23 | ~1917 |
| Lawrence Hoffman | Son | — | 24 | ~1916 |
| George Hoffman | Son | — | 22 | ~1918 |
| Cecilia Hoffman | Spouse | — | 45 | ~1895 |
| Robert Hoffman | Son | — | 17 | ~1923 |
| James Hoffman | Son | — | 18 | ~1922 |
| Emily Hoffman | Daughter | — | 12 | ~1928 |
| Dorothy Hoffman | Daughter | — | 15 | ~1925 |
| William Hoffman | Son | — | 11 | ~1929 |
| Micheal Hoffman | Son | — | 6 | ~1934 |
| Theodore Hoffman | Son | — | 8 | ~1932 |
| Joseph Hoffman | Head | — | 46 | ~1894 |
| Thomas Hoffman | Son | — | 14 | ~1926 |
| Arthur Hoffman | Son | — | 20 | ~1920 |
Census Appearances
1930
Cook, Illinois
Son, age 7
Cook, Illinois · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffman |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | England |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 18
Cook-County, Illinois · implied b. ~1922 — 14 household members
| Surname | Hoffman |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | No No No No |
| Industry | S |
| Class of Worker | 6 |
| Hours Worked | 6 |
| Highest Grade | No H3 |
| 1935 Residence | Same House |
| 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 James Hoffman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Hoffman
Son · 1940 · age 18 · b. ~1922 · Illinois
★ You are viewing this record
Sibling
Thomas Hoffman
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Hoffman
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Micheal Hoffman
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Hoffman
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Hoffman
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hoffman
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Hoffman
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Hoffman
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lenard Hoffman
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Hoffman
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Hoffman
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-00985-00150)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Tillie Kiziller | 53 | Mother-in-law | No No No No | Poland |
| 42 | Leo Pelz | 65 | Head | No No No No | Poland |
| 43 | Joseph Mook | 23 | Head | Truck Driver | Illinois |
| 44 | Julia Mook | 23 | Wife | No No No No | Illinois |
| 45 | Joseph Hoffman | 46 | Head | Motor Man | Illinois |
| 46 | Cecilia Hoffman | 45 | Wife | No No No No | Illinois |
| 47 | Lawrence Hoffman | 24 | Son | Checker | Illinois |
| 48 | Lenard Hoffman | 23 | Son | Feeder | Illinois |
| 49 | George Hoffman | 22 | Son | Laborer | Illinois |
| 50 | Arthur Hoffman | 20 | Son | Ware House Man | Illinois |
| 51 | James Hoffman THIS PERSON | 18 | Son | No No No No | Illinois |
| 52 | Robert Hoffman | 17 | Son | No No No No | Illinois |
| 53 | Dorothy Hoffman | 15 | Daughter | No No No No | Illinois |
| 54 | Thomas Hoffman | 14 | Son | — | Illinois |
| 55 | Emily Hoffman | 12 | Daughter | — | Illinois |
| 56 | William Hoffman | 11 | Son | — | Illinois |
| 57 | Theodore Hoffman | 8 | Son | — | Illinois |
| 58 | Micheal Hoffman | 6 | Son | — | Illinois |
| 59 | Martha Burenka | 50 | Head | House Work | Illinois |
| 60 | Gene Burenka | 16 | Son | No No No No | Illinois |
| 61 | Joseph Minetz | 47 | Head | Marble Polisher | Poland |
| 62 | Alexandra Minetz | 49 | Wife | No No No No | Russia |
| 63 | Steve Minetz | 24 | Son | Shipping Clerk | Illinois |
| 64 | John Minetz | 22 | Son | Plater | Illinois |
| 65 | Sylvester Minetz | 18 | Son | No No No No | Illinois |
| 66 | Wasily Shagaff | 52 | Lodger | Barber | Poland |
| 67 | Anthony Kokistek | 65 | Head | Shipping Trucker | Poland |
| 68 | Anntionette Kokistek | 62 | Wife | No No No No | Poland |
| 69 | Charles Kokistek | 31 | Son | Glove Cutter | Poland |
| 70 | Mary Kokistek | 22 | Daughter | Packer | Illinois |
| 71 | Adam Zwerko | 30 | Head | Wire Lamp | Illinois |
| 72 | Casimir Zwerko | 30 | Brother | Address Machine | Illinois |
| 73 | Anntionette Zwerko | 25 | Sister | Waitress | Illinois |
| 74 | Steve Zwerko | 20 | Brother | Machine Shop | Illinois |
| 75 | John Mroczkowski | 50 | Head | Machinist | Poland |
| 76 | Lillian Mroczkowski | 48 | Wife | No No No No | Poland |
| 77 | Harry Mroczkowski | 24 | Son | Laborer | Michigan |
| 78 | Elenore Mroczkowski | 23 | Daughter | Packer | Illinois |
| 79 | Florence Mroczkowski | 20 | Daughter | Laborer | Illinois |
| 80 | Bernice Mroczkowski | 18 | Daughter | Laborer | Wisconsin |
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)