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Ira Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Ira Jones across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Ira & Irving — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Jones |
| Given Name | Ira W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Errand boy |
| Industry | Electrotype |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 160 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Errand Boy |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ira | Age | Birth yr |
|---|---|---|---|---|
| Carol Jones | Daughter | — | 15 | ~1925 |
| Bertha Jones | Spouse | — | 51 | ~1889 |
| Ira Jones | Son | — | 22 | ~1918 |
| Robert Jones | Son | — | 18 | ~1922 |
| Ira Jones | Head | — | 56 | ~1884 |
Census Appearances
1920
Cook, Illinois
Son, age 2
Cook, Illinois · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Irving Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Irving |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 22
Cook-County, Illinois · implied b. ~1918 — 5 household members
| Surname | Jones |
| Given Name | Ira W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Errand boy |
| Industry | Electrotype |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 160 |
| Highest Grade | Hs 4 |
| 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 Ira Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ira Jones (~0.92 confidence) and father Irving Jones (~0.92 confidence) and mother Bertha Jones (~0.92 confidence) and mother Grace Jones (~0.92 confidence) and mother Jessie Jones (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ira Jones
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Irving Jones
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Bertha Jones
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Grace Jones
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Jessie Jones
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ira Jones
Son · 1940 · age 22 · b. ~1918 · Illinois
★ You are viewing this record
Sibling
Carol Jones
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Jones
Sibling · 1940 · age 18
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-t0627-00987-00282)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Carl A. Litterst | 50 | Head | Salesman | Illinois |
| 42 | Bertha Litterst | 39 | Wife | Bookkeeper | Illinois |
| 43 | Albert Litterst | 48 | Brother | Mail Clerk | Illinois |
| 44 | Gilbert A. Tobias | 26 | Head | Maintenance | Colorado |
| 45 | Eleanor L. Tobias | 25 | Wife | — | Illinois |
| 46 | Roger G. Tobias | 1 | Son | — | Illinois |
| 47 | August Licht | 70 | Head | Proprietor | Illinois |
| 48 | Mary Licht | 68 | Wife | — | Illinois |
| 49 | Ira J. Jones | 56 | Head | — | Wisconsin |
| 50 | Bertha Jones | 51 | Wife | — | Wisconsin |
| 51 | Ira W. Jones THIS PERSON | 22 | Son | Errand Boy | Illinois |
| 52 | Robert Jones | 18 | Son | — | Illinois |
| 53 | Carol B. Jones | 15 | Daughter | — | Illinois |
| 54 | Mae Lindstrom | 42 | Head | — | Illinois |
| 55 | Warren Lindstrom | 18 | Son | Truck Driver | Illinois |
| 56 | Leroy Lindstrom | 17 | Son | — | Illinois |
| 57 | Arlene Lindstrom | 10 | Daughter | — | Illinois |
| 58 | Elizabeth Garber | 28 | Boarder | Typist | Illinois |
| 59 | Lucille Garber | 6 | Daughter | — | Illinois |
| 60 | Anna Dobro | 54 | Head | — | Czechoslovakia |
| 61 | Harry Dobro | 28 | Son | Salesman | Illinois |
| 62 | Elsie Dobro | 26 | Daughter | Teacher | Illinois |
| 63 | Theresa Becker | 60 | Head | — | Jugo-Slavia |
| 64 | Walter Becker | 29 | Son | Salesman | Illinois |
| 65 | Peter Bujicky | 51 | Boarder | Head Cleaner | Austria |
| 66 | George Bujicky | 24 | Boarder | Head Splitter | Illinois |
| 67 | Gaylord Bujicky | 21 | Boarder | New Worker | Illinois |
| 68 | Natale Biondi | 56 | Head | Proprietor | Italy |
| 69 | Mariana Biondi | 52 | Wife | — | Italy |
| 70 | Alice Giometti | 30 | Daughter | — | Illinois |
| 71 | John Giometti | 31 | Son-in-law | Clerk | Italy |
| 72 | Susan Giometti | 4 | Granddaughter | — | Illinois |
| 73 | Adam Kolakowski | 29 | Head | Presser | Illinois |
| 74 | Mildred Kolakowski | 25 | Wife | Publ. Girl | Illinois |
| 75 | Donald Kolakowski | 5 | Son | — | Illinois |
| 76 | Mary Joyce | 52 | Boarder | — | Canada-French |
| 77 | Apollonia Grzybowski | 72 | Head | Dressmaker | Poland |
| 78 | Catherine Grzybowski | 33 | Boarder | Threader | Illinois |
| 79 | — | None | — | — | — |
| 80 | Ned W. Stein | 54 | Head | Metal Worker | Illinois |
Pedigree Summary
Ira + 2 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)