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Joyce Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Joyce Johnson across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents Oscar & Oscar — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Johnson |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline City |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | Assistant |
| Industry | Doctors office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Assistant |
| Township / Ward | Moline City |
| Est. Birth Year | ~1919 |
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 Joyce | Age | Birth yr |
|---|---|---|---|---|
| Joyce Johnson | Daughter | — | 21 | ~1919 |
| Hildur Johnson | Head | — | 48 | ~1892 |
| Milton Johnson | Son | — | 12 | ~1928 |
| Bettie Johnson | Daughter | — | 18 | ~1922 |
| Maureen Johnson | Daughter | — | 5 | ~1935 |
Census Appearances
1920
Rock Island, …
Daughter, age 1
Rock Island, Illinois · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Joyce S. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Sweden |
| Mother Tongue | Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Daughter, age 11
Rock Island, Illinois · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Daughter, age 21
Rock-Island-County, Illinois · implied b. ~1919 — 5 household members
| Surname | Johnson |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline City |
| 1935 Residence (County) | Rock Island |
| Occupation | Assistant |
| Industry | Doctors office |
| Class of Worker | PW |
| Hours Worked | 40 |
| 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 Joyce Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Oscar Johnson (~0.92 confidence) and father Oscar Johnson (~0.92 confidence) and mother Hildur Johnson (~0.92 confidence) and mother Hulda Johnson (~0.92 confidence) and mother Wilda Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oscar Johnson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Oscar Johnson
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Hildur Johnson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Hulda Johnson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Wilda Johnson
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joyce Johnson
Daughter · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Maureen Johnson
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bettie Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Milton 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 — Rock-Island-County, Illinois
Open full size
1940 US Federal Census — Rock-Island-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00875-00063)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Florence Lunde | 23 | Daughter | Teacher | Illinois |
| 42 | Louisa Veire | 68 | Head | — | Belgium |
| 43 | Frank Veire | 46 | Son | Farm Hand | Illinois |
| 44 | Henry Langhe | 66 | Head | Proprietor | Belgium |
| 45 | Emma Langhe | 64 | Wife | — | Belgium |
| 46 | Rachel Rolls | 32 | Daughter | Secretary | Illinois |
| 47 | Louis A. Rolls | 45 | Son-in-law | Umpire | Illinois |
| 48 | Irene Rolls | 31 | Daughter | — | Illinois |
| 49 | William Wilkins | 49 | Head | Office Manager | Michigan |
| 50 | Ruth V. Wilkins | 46 | Wife | — | Illinois |
| 51 | Bert Johnson | 30 | Head | Tool Maker | Illinois |
| 52 | Virginia Johnson | 25 | Wife | — | Illinois |
| 53 | Allan R. Johnson | 2 | Son | — | Illinois |
| 54 | Bruce K. Johnson | 1 | Son | — | Illinois |
| 55 | Bertha Carlson | 64 | Head | — | Sweden |
| 56 | Alfar Johnson | 28 | Son | Carpenter | Illinois |
| 57 | Charles Johnson | 50 | Head | Foreman | Illinois |
| 58 | Anna G. Johnson | 50 | Wife | — | Illinois |
| 59 | Myrtle Johnson | 23 | Daughter | Secretary | Illinois |
| 60 | Hildur Johnson | 48 | Head | Office Assistant | Sweden |
| 61 | Joyce Johnson THIS PERSON | 21 | Daughter | Assistant | Illinois |
| 62 | Bettie Mae Johnson | 18 | Daughter | Typist | Illinois |
| 63 | Milton Johnson | 12 | Son | — | Illinois |
| 64 | Maureen Johnson | 5 | Daughter | — | Illinois |
| 65 | George Brockwell | 33 | Head | Spray Painter | Illinois |
| 66 | Hassie R. Brockwell | 31 | Wife | Saleslady | Tennessee |
| 67 | Andrew Steil | 59 | Head | Machine Operator | Wisconsin |
| 68 | Alice Steil | 50 | Wife | — | Iowa |
| 69 | Rita Steil | 16 | Daughter | — | Illinois |
| 70 | Andrew Jr. Steil | 23 | Head | Laborer | Iowa |
| 71 | Harriet B. Steil | 21 | Wife | — | Illinois |
| 72 | Cargle Ann Steil | 1 | Daughter | — | Illinois |
| 73 | Edison Harris | 48 | Head | Assembler | Illinois |
| 74 | Nellie Harris | 41 | Wife | — | Illinois |
| 75 | Ronald Harris | 11 | Son | — | Illinois |
| 76 | Bonnie Harris | 9 | Son | — | Illinois |
| 77 | Larry Harris | 7 | Son | — | Illinois |
| 78 | Terry Harris | 5 | Son | — | Illinois |
| 79 | Daniel Roman | 22 | Head | Ryne Paper Press | Illinois |
| 80 | Arlene Roman | 19 | Wife | — | Illinois |
Pedigree Summary
Joyce + 3 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)