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Jean Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Jean Johnson across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Jean L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | G 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1929 |
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 Jean | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Johnson | Other | — | 71 | ~1869 |
| Willard Johnson | Son | — | 17 | ~1923 |
| Dorothy Johnson | Daughter | — | 15 | ~1925 |
| Raymond Johnson | Son | — | 12 | ~1928 |
| Hazel Johnson | Spouse | — | 37 | ~1903 |
| Albert Johnson | Other | — | 80 | ~1860 |
| Raymond Johnson | Head | — | 40 | ~1900 |
| Jean Johnson | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Cook, Illinois
Daughter, age 1
Cook, Illinois · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Jean L |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | South Dakota |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 11
Cook-County, Illinois · implied b. ~1929 — 8 household members
| Surname | Johnson |
| Given Name | Jean L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | G 5 |
| 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 Jean Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Jean Johnson
Daughter · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Willard Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Johnson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Johnson
Sibling · 1940 · age 12
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-t0627-00951-00812)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lewis Carter | 13 | Son | — | Illinois |
| 42 | Leslie Carter | 9 | Son | — | Illinois |
| 43 | Aurelius Ohlin | 53 | Head | Salesman | Illinois |
| 44 | Hattie Ohlin | 53 | Wife | — | Germany |
| 45 | Ruth Ohlin | 28 | Daughter | Stenographer | Illinois |
| 46 | Anna Ohlin | 74 | Mother | — | Sweden |
| 47 | Albert Parks | 64 | Head | Shop Maintenance Man | Germany |
| 48 | Louise Parks | 62 | Wife | — | Germany |
| 49 | Valentine Scanlan | 45 | Head | Assistant Engineer | Illinois |
| 50 | Grace Scanlan | 35 | Wife | — | Illinois |
| 51 | Valentine Scanlan | 16 | Son | — | Illinois |
| 52 | Patricia Scanlan | 14 | Daughter | — | Illinois |
| 53 | Raymond Johnson | 40 | Head | Laborer | Illinois |
| 54 | Hazel Johnson | 37 | Wife | — | Illinois |
| 55 | Willard Johnson | 17 | Son | — | Illinois |
| 56 | Dorothy G. Johnson | 15 | Daughter | — | Illinois |
| 57 | Raymond Jr. Johnson | 12 | Son | — | Illinois |
| 58 | Jean L. Johnson THIS PERSON | 11 | Daughter | — | Illinois |
| 59 | Elizabeth M. Johnson | 71 | Mother | — | Germany |
| 60 | Albert Johnson | 80 | Father | — | Germany |
| 61 | Anton Svitil | 47 | Head | Cabinet Maker | Czechoslovakia |
| 62 | Rose Svitil | 50 | Wife | — | Czechoslovakia |
| 63 | Edward Svitil | 23 | Son | Stenographer | Illinois |
| 64 | Anton Svitil | 20 | Son | Machinist | Illinois |
| 65 | George Christy | 55 | Head | Time Study Man | Iowa |
| 66 | Maude Christy | 51 | Wife | — | Illinois |
| 67 | Marguerite Christy | 21 | Daughter | File Clerk | Illinois |
| 68 | June Christy | 18 | Daughter | Typist | Illinois |
| 69 | George Christy | 14 | Son | — | Illinois |
| 70 | Dorothy Christy | 10 | Daughter | — | Illinois |
| 71 | John B. Morris | 62 | Head | Conductor | Indiana |
| 72 | Helen E. Morris | 60 | Wife | — | Germany |
| 73 | Helen M. Morris | 25 | Daughter | — | Illinois |
| 74 | George Tomasek | 31 | Head | Pharmacist | Illinois |
| 75 | Adeline Tomasek | 28 | Wife | — | Illinois |
| 76 | Carol Tomasek | 6 | Daughter | — | Illinois |
| 77 | Richard Pinter | 30 | Head | Steel Inspector | Wisconsin |
| 78 | Marie Pinter | 28 | Wife | Stenographer | Illinois |
| 79 | Theodore Clausen | 24 | Brother-in-law | Artist | 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)