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Arnold Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Rock-Island-County, Illinois
Our Model Tree links this Arnold Johnson across the 1920, 1930 and 1940 US Censuses in Rock-Island-County, Illinois (XGBoost, ~Confirmed), with identified parents Oscar & Mabel — first a son (b.~1914), then head of a 2-person household.
Age 26
b. ~1914
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Rock-Island-County, Illinois |
| Surname | Johnson |
| Given Name | Arnold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline |
| 1935 Residence (County) | Rock Island |
| Additional Details | |
| Occupation | laborer |
| Industry | Farm Implement |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Moline |
| Est. Birth Year | ~1914 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Arnold | Age | Birth yr |
|---|---|---|---|---|
| Mathilda Johnson | Spouse | — | 57 | ~1883 |
| Arnold Johnson | Son | — | 26 | ~1914 |
Census Appearances
1920
Rock Island, …
Son, age 6
Rock Island, Illinois · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Arnold G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Son, age 16
Rock Island, Illinois · implied b. ~1914 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Arnold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Son, age 26
Rock-Island-County, Illinois · implied b. ~1914 — 2 household members
| Surname | Johnson |
| Given Name | Arnold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Moline |
| 1935 Residence (County) | Rock Island |
| Occupation | laborer |
| Industry | Farm Implement |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 900 |
| 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 Arnold 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 mother Mabel Johnson (~0.92 confidence) and mother Mathilda Johnson (~0.92 confidence) and mother Mathilda Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Oscar Johnson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Mabel Johnson
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Mathilda Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Mathilda Johnson
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Arnold Johnson
Son · 1940 · age 26 · b. ~1914 · Illinois
★ You are viewing this record
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-t0627-00875-00447)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mathilda Johnson | 57 | Wife | 0 | Sweden |
| 42 | Arnold Johnson THIS PERSON | 26 | Son | Laborer | Illinois |
| 43 | Andrew Frazell | 61 | Head | Foreman | Illinois |
| 44 | Margretha Frazell | 51 | Wife | 0 | Illinois |
| 45 | Alta Frazell | 26 | Daughter | Stenographer | Iowa |
| 46 | Lucille Frazell | 13 | Daughter | 0 | Illinois |
| 47 | John Herstedt | 69 | Head | Pattern Maker | Sweden |
| 48 | Anna Herstedt | 63 | Wife | 0 | Illinois |
| 49 | John Anderson | 64 | Head | Iron Worker | Sweden |
| 50 | Amanda Anderson | 66 | Wife | 0 | Sweden |
| 51 | Carl Anderson | 32 | Son | Book Binder | Illinois |
| 52 | Deryle Anderson | 10 | Grandson | 0 | Illinois |
| 53 | Harold Olson | 37 | Head | Draftsman | Illinois |
| 54 | Esther Olson | 37 | Wife | 0 | Iowa |
| 55 | Eleanor Lang | 14 | Niece | 0 | Iowa |
| 56 | Edward Greepscheer | 57 | Head | Laborer | Holland |
| 57 | Jenny Greepscheer | 50 | Wife | 0 | Wisconsin |
| 58 | Irene Greepscheer | 23 | Daughter | 0 | Illinois |
| 59 | Amelia Hermsen | 61 | Head | 0 | France |
| 60 | Emil Hermsen | 30 | Son | Core Maker | Illinois |
| 61 | Mary Hibner | 70 | Lodger | 0 | New York |
| 62 | Arthur Thompson | 44 | Lodger | Molder | Illinois |
| 63 | Carl W. Anderson | 46 | Head | Sheet Metal Worker | Illinois |
| 64 | Lois E. Anderson | 37 | Wife | Laundress | Iowa |
| 65 | Betty Jean Anderson | 14 | Daughter | 0 | Illinois |
| 66 | Lois Irene Anderson | 12 | Daughter | 0 | Illinois |
| 67 | Kay Ellen Anderson | 8 | Daughter | 0 | Illinois |
| 68 | Alfred Anderson | 74 | Father | 0 | Sweden |
| 69 | Henry Seefeldt | 60 | Father-in-law | Watchman | Iowa |
| 70 | Axel G. Gustafson | 48 | Head | Assembler | Sweden |
| 71 | Selma Gustafson | 44 | Wife | 0 | Sweden |
| 72 | Ray Gustafson | 17 | Son | 0 | Illinois |
| 73 | Viola Gustafson | 16 | Daughter | 0 | Illinois |
| 74 | Hannah Oberg | 75 | Head | 0 | Sweden |
| 75 | Carl M. Talmadge | 37 | Son-in-law | Assistant Foreman | Michigan |
| 76 | Edith E. Talmadge | 39 | Daughter | 0 | Illinois |
| 77 | Arthur Anderson | 52 | Head | Delivery | Illinois |
| 78 | Robert E. Anderson | 51 | Nephew | Nerve Trainer | Illinois |
| 79 | Inez Anderson | 43 | Wife | 0 | Iowa |
| 80 | Andrew Nelson | 65 | Head | Inspector | Sweden |
Pedigree Summary
Arnold
Gen 1 · 4 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)