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Lee Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Lee Jones across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Jones |
| Given Name | Lee, jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1925 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lee | Age | Birth yr |
|---|---|---|---|---|
| Shirley Jones | Daughter | — | 10 | ~1930 |
| Dolores Jones | Daughter | — | 6 | ~1934 |
| Betty Jones | Daughter | — | 14 | ~1926 |
| Frances Jones | Daughter | — | 17 | ~1923 |
| Barbara Jones | Daughter | — | 8 | ~1932 |
| Vera Jones | Head | — | 34 | ~1906 |
| Lee Jones | Son | — | 15 | ~1925 |
| Robert Jones | Son | — | 12 | ~1928 |
Census Appearances
1930
Cook, Illinois
Son, age 5
Cook, Illinois · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Leo Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | Iowa |
| Mother's Birthplace | North Dakota |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Cook-County, Illinois
Son, age 15
Cook-County, Illinois · implied b. ~1925 — 8 household members
| Surname | Jones |
| Given Name | Lee, jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | Chicago city |
| 1935 Residence (County) | Cook |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Lee Jones across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Lee Jones
Son · 1940 · age 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
Betty Jones
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Jones
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Jones
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Jones
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Jones
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dolores Jones
Sibling · 1940 · age 6
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
39 people indexed on this census page (nara:1940:m-t0627-00940-00442)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Stark | 36 | Head | Tinmer | Austria, Hungary |
| 2 | Catherine Stark | 34 | Wife | — | Illinois |
| 3 | Charles, Jr. Stark | 10 | Son | — | Illinois |
| 4 | Andrew Spaker | 34 | Brother-in-law | Carpenter Helper | Illinois |
| 5 | Sam Gramisano | 44 | Head | Machinist | Italy |
| 6 | Mary Gramisano | 35 | Wife | — | Italy |
| 7 | Rose Gramisano | 17 | Daughter | — | Illinois |
| 8 | John Gramisano | 16 | Son | — | Illinois |
| 9 | Joseph N. Brown | 53 | Head | Tool-Maker | Illinois |
| 10 | Selma Brown | 52 | Wife | — | Illinois |
| 11 | Robert Brown | 26 | Son | Truck Driver | Illinois |
| 12 | Marion Brown | 25 | Daughter | Typist | Illinois |
| 13 | John N. Brown | 83 | Father | — | Sweden |
| 14 | Walter Gudas | 61 | Head | Repairman | Lithuania |
| 15 | Anna Gudas | 46 | Wife | — | Lithuania |
| 16 | Joseph Gudas | 21 | Son | Clerk | Illinois |
| 17 | Walter, Jr. Gudas | 16 | Son | — | Illinois |
| 18 | Joseph Dadantis | 36 | Head | Grilling Machine | Italy |
| 19 | Jean Dadantis | 30 | Wife | — | Illinois |
| 20 | Joseph Arvia | 22 | Head | — | Italy |
| 21 | Emily Arvia | 67 | Wife | — | Italy |
| 22 | Herman Bergen | 51 | Head | Truck Driver | Illinois |
| 23 | Cornelius Bergen | 48 | Brother | Laborer | Illinois |
| 24 | Mary Van Riper | 68 | Mother | — | Illinois |
| 25 | Lillian Jones | 34 | Lodger | — | England |
| 26 | Clifford C. Jones | 13 | Lodger | — | Illinois |
| 27 | Robert M. Jones | 7 | Lodger | — | Illinois |
| 28 | Hugh Jones | 5 | Lodger | — | Illinois |
| 29 | Vera Jones | 34 | Head | — | North Dakota |
| 30 | Frances Jones | 17 | Daughter | New Waiter | North Dakota |
| 31 | Lee, Jr. Jones THIS PERSON | 15 | Son | — | Montana |
| 32 | Betty Lou Jones | 14 | Daughter | — | Illinois |
| 33 | Robert Jones | 12 | Son | — | Illinois |
| 34 | Shirley Jones | 10 | Daughter | — | Illinois |
| 35 | Barbara Jones | 8 | Daughter | — | Illinois |
| 36 | Dolores Jones | 6 | Daughter | — | Illinois |
| 37 | Alfred Baldus | 68 | Head | — | Canada-French |
| 38 | Celamine Baldus | 65 | Wife | — | Canada-French |
| 39 | Lorraine Baldus | 24 | Daughter | Seamstress | 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)