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Frank Alexander — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Frank Alexander across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 4-person household.
Age 56
b. ~1884
Male
Head
Born: Lithuania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Alexander |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Lithuania |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Car-mechanic |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Lithuania |
| Birthplace (normalized) | lithuania |
| Occupation | Car-Mechanic |
| Township / Ward | Chicago |
| Est. Birth Year | ~1884 |
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 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Frank Alexander | Head | — | 56 | ~1884 |
| Albert Alexander | Son | — | 21 | ~1919 |
| Rose Alexander | Daughter | — | 20 | ~1920 |
| Rose Alexander | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Cook, Illinois
Head, age 38
Cook, Illinois · implied b. ~1882 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Lithuania |
| Year of Immigration | 1905 |
| Naturalization Status | First papers filed |
| Father's Birthplace | Lithuania |
| Mother's Birthplace | Lithuania |
| Occupation | Machinist |
| Industry | Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Lithuanian |
| Home Owned/Rented | R |
| Birth Country | Lithuania |
| Birthplace (normalized) | lithuania |
1930
Cook, Illinois
Head, age 46
Cook, Illinois · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Lithuania |
| Naturalization Status | Naturalized |
| Year of Immigration | 1903 |
| Age at First Marriage | 21 |
| Father's Birthplace | Lithuania |
| Mother's Birthplace | Lithuania |
| Occupation | Machinist |
| Industry | Railroad Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Slovak |
| Home Owned/Rented | O |
| Home Value / Rent | 7500 |
| Veteran | No |
| Birth Country | Lithuania |
| Birthplace (normalized) | lithuania |
1940
Cook-County, Illinois
Head, age 56
Cook-County, Illinois · implied b. ~1884 — 4 household members
| Surname | Alexander |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Lithuania |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Occupation | Car-mechanic |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Lithuania |
| Birthplace (normalized) | lithuania |
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 Frank Alexander across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Frank Alexander
Head · 1940 · age 56 · b. ~1884 · 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
39 people indexed on this census page (nara:1940:m-t0627-00950-00754)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anthony Urbik | 22 | Son | Freight-Handler | Illinois |
| 2 | Margaret Winters | 51 | Head | Matron | Illinois |
| 3 | Lillian Seymour | 31 | Daughter | — | Illinois |
| 4 | David Riordan | 41 | Lodger | Truck Driver | Illinois |
| 5 | Catherine Johansen | 35 | Head | Machine-Operator | Illinois |
| 6 | Mary Sop | 42 | Sister | Saleswoman | Illinois |
| 7 | John Sop | 37 | Brother | — | Illinois |
| 8 | John Hughes | 45 | Lodger | Laborer | Irish Free State |
| 9 | Frank Alexander THIS PERSON | 56 | Head | Car-Mechanic | Lithuania |
| 10 | Rose Alexander | 49 | Wife | — | Lithuania |
| 11 | Albert Alexander | 21 | Son | Laborer | Illinois |
| 12 | Rose Alexander | 20 | Daughter | General Office Worker | Illinois |
| 13 | Gisella Baumgratz | 30 | Head | Dressmaker | Illinois |
| 14 | Henry Baumgratz | 9 | Son | — | Illinois |
| 15 | Josephine Baumgratz | 6 | Daughter | — | Illinois |
| 16 | Eva Pavlisic | 60 | Aunt | — | Yugoslavia |
| 17 | William Carroll | 42 | Head | Switchman | Illinois |
| 18 | Harriet Carroll | 37 | Wife | — | Illinois |
| 19 | William Carroll | 18 | Son | New Worker | Illinois |
| 20 | Jack Carroll | 16 | Son | — | Illinois |
| 21 | Robert Carroll | 14 | Son | — | Illinois |
| 22 | Richard Carroll | 10 | Son | — | Illinois |
| 23 | Patrick Carroll | 10 | Son | — | Illinois |
| 24 | Charles Kelly | 29 | Head | Stationary-Fireman | Illinois |
| 25 | Marianne Kelly | 27 | Wife | Telephone Operator | Illinois |
| 26 | Casimer Tryban | 42 | Head | Mail-Carrier | Indiana |
| 27 | Floretta Tryban | 31 | Wife | — | Illinois |
| 28 | Raymond Tryban | 12 | Son | — | Illinois |
| 29 | Louise Tryban | 10 | Daughter | — | Illinois |
| 30 | George Tryban | 7 | Son | — | Illinois |
| 31 | David Tryban | 5 | Son | — | Illinois |
| 32 | Lawrence Tryban | 2 | Son | — | Illinois |
| 33 | Lillian Phillips | 50 | Head | Weaver | Illinois |
| 34 | Jack Phillips | 17 | Son | — | Illinois |
| 35 | George Carrigan | 42 | Head | Stationary-Fireman | Illinois |
| 36 | Helen Carrigan | 40 | Wife | — | Illinois |
| 37 | James Carrigan | 16 | Son | — | Illinois |
| 38 | George Carrigan | 14 | Son | — | Illinois |
| 39 | Florence Carrigan | 13 | Daughter | — | 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)