BJ
Betty Jones — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Betty Jones across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Jones |
| Given Name | Betty A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1927 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Carol Jones | Daughter | — | 3 | ~1937 |
| Betty Jones | Daughter | — | 13 | ~1927 |
| Doris Jones | Daughter | — | 4 | ~1936 |
| Marguerite Jones | Daughter | — | 1 | ~1939 |
| Charles Jones | Head | — | 35 | ~1905 |
| Bert Jones | Son | — | 6 | ~1934 |
| Robert Jones | Son | — | 10 | ~1930 |
| Richard Jones | Son | — | 11 | ~1929 |
| Elsie Jones | Spouse | — | 31 | ~1909 |
Census Appearances
1930
Cook, Illinois
Daughter, age 2
Cook, Illinois · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Betty Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 13
Cook-County, Illinois · implied b. ~1927 — 9 household members
| Surname | Jones |
| Given Name | Betty A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | 6 |
| 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 Betty Jones across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Jones
Daughter · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Doris Jones
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bert Jones
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Jones
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carol Jones
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marguerite Jones
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Jones
Sibling · 1940 · age 11
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
30 people indexed on this census page (nara:1940:m-t0627-00960-00630)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gladys S. Johnson | 33 | Wife | — | Illinois |
| 42 | Lois D. Johnson | 9 | Daughter | — | Illinois |
| 43 | J. Albert Carlson | 38 | Head | Mill-Wright | Sweden |
| 44 | Hilma Carlson | 39 | Wife | — | Sweden |
| 45 | Richard O. Box | 42 | Head | Maintenance Man | Netherlands |
| 46 | Anna Box | 39 | Wife | — | Netherlands |
| 47 | John H. Box | 16 | Son | — | Illinois |
| 48 | Annette Box | 15 | Daughter | — | Illinois |
| 49 | Eleanor Box | 11 | Daughter | — | Illinois |
| 50 | Charles R. Jones | 35 | Head | Lather | Ohio |
| 51 | Elsie C. Jones | 31 | Wife | — | Illinois |
| 52 | Betty A. Jones THIS PERSON | 13 | Daughter | — | Illinois |
| 53 | Richard L. Jones | 11 | Son | — | Illinois |
| 54 | Robert A. Jones | 10 | Son | — | Illinois |
| 55 | Bert L. Jones | 6 | Son | — | Illinois |
| 56 | Doris J. Jones | 4 | Daughter | — | Illinois |
| 57 | Carol R. Jones | 3 | Daughter | — | Illinois |
| 58 | Marguerite Jones | 1 | Daughter | — | Illinois |
| 59 | Carl R. Bergstrom | 36 | Head | Carpenter | Sweden |
| 60 | Elsie S. Bergstrom | 30 | Wife | — | Connecticut |
| 61 | Richard Youngstrom | 12 | Step-son | — | Illinois |
| 62 | Patrick J. Doyle | 33 | Head | Labor Foreman | Irish Free State |
| 63 | Alice Doyle | 30 | Wife | — | Northern Ireland |
| 64 | Mary M. Doyle | 6 | Daughter | — | Illinois |
| 65 | Alice T. Doyle | 4 | Daughter | — | Illinois |
| 66 | Patrick J. Doyle | 2 | Son | — | Illinois |
| 67 | Dick Stroobosscher | 67 | Head | — | Netherlands |
| 69 | Andrew Berg | 44 | Head | Switchman | Illinois |
| 70 | Vera Berg | 49 | Wife | — | Illinois |
| 71 | Marjorie Berg | 10 | 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)