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John Arnold — 1940 US Census Record
Model Tree available1940 United States Federal Census · Scott-County, Illinois
Our Model Tree links this John Arnold across the 1910, 1920, 1930 and 1940 US Censuses in Scott-County, Illinois (XGBoost, ~Confirmed), with identified parents Isaac & George — first a son (b.~1899), then head of a 4-person household.
Age 41
b. ~1899
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Illinois |
| Surname | Arnold |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Bluffs Village |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Occupation | Sewer Construction |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 988 |
| Highest Grade | G 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Sewer Construction |
| Township / Ward | Bluffs Village |
| Est. Birth Year | ~1899 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Isaac Arnold | Head | — | 61 | ~1879 |
| Richard Arnold | Son | — | 39 | ~1901 |
| John Arnold | Son | — | 41 | ~1899 |
| George Arnold | Son | — | 16 | ~1924 |
Census Appearances
1910
Scott, Illinois
Son, age 11
Scott, Illinois · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Scott, Illinois
Son, age 21
Scott, Illinois · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Scott, Illinois
Son, age 31
Scott, Illinois · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | John S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Painter |
| Industry | Building |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Scott-County, Illinois
Son, age 41
Scott-County, Illinois · implied b. ~1899 — 4 household members
| Surname | Arnold |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Bluffs Village |
| 1935 Residence (County) | Scott |
| Occupation | Sewer Construction |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 988 |
| Highest Grade | G 8 |
| 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 John Arnold across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Isaac Arnold (~0.92 confidence) and father George Arnold (~0.92 confidence) and father George Arnold (~0.92 confidence) and mother Jessie Arnold (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Isaac Arnold
b. ~1879
Source father
● Household
· direct · ~0.92
Father
George Arnold
b. ~1879
Source father
● Household
· direct · ~0.92
Father
George Arnold
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Jessie Arnold
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Arnold
Son · 1940 · age 41 · b. ~1899 · Illinois
★ You are viewing this record
Sibling
George Arnold
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Arnold
Sibling · 1940 · age 39
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 — Scott-County, Illinois
Open full size
1940 US Federal Census — Scott-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00889-00200)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Six | 71 | Head | Retired | Illinois |
| 2 | Laura Six | 66 | Wife | — | Illinois |
| 3 | Maude Stanton | 61 | Head | — | Illinois |
| 4 | Wayne Masterson | 35 | Head | Janitor | Illinois |
| 5 | Loretta Masterson | 32 | Wife | — | Illinois |
| 6 | James Masterson | 9 | Son | — | Illinois |
| 7 | Robert Masterson | 6 | Son | — | Illinois |
| 8 | Virginia Masterson | 5 | Daughter | — | Illinois |
| 9 | George Davis | 66 | Head | Retired | Illinois |
| 10 | Earl Davis | 35 | Son | Farm Laborer | Illinois |
| 11 | Beatrice Davis | 29 | Daughter | Housekeeping | Illinois |
| 12 | Fred Weiss | 57 | Head | Laborer | Germany |
| 13 | Minne Weiss | 62 | Wife | — | Germany |
| 14 | Clarence Weiss | 25 | Son | Laborer | Illinois |
| 15 | William Weiss | 7 | Grandson | — | Illinois |
| 16 | Fred Northcutt | 45 | Head | Laborer | Illinois |
| 17 | Eva Northcutt | 46 | Wife | — | Illinois |
| 18 | William Campbell | 39 | Head | Laborer | Illinois |
| 19 | Molly Campbell | 37 | Wife | — | Illinois |
| 20 | Mary Campbell | 17 | Daughter | — | Illinois |
| 21 | Albert Campbell | 15 | Son | — | Illinois |
| 22 | Gordon Campbell | 13 | Son | — | Illinois |
| 23 | Martha Campbell | 9 | Daughter | — | Illinois |
| 24 | George Smith | 40 | Head | Automobile Salesman | Illinois |
| 25 | Mae Smith | 39 | Wife | — | Illinois |
| 26 | Russell Smith | 20 | Son | — | Illinois |
| 27 | Raymond Smith | 14 | Son | — | Illinois |
| 28 | Norma Smith | 9 | Daughter | — | Illinois |
| 29 | Dorothy Smith | 4 | Daughter | — | Illinois |
| 30 | Hugh Moore | 42 | Head | Superintendent | Illinois |
| 31 | Pearl Moore | 36 | Wife | — | Illinois |
| 32 | Newton Moore | 18 | Son | Laborer | Illinois |
| 33 | Jack Moore | 16 | Son | Clerk | Illinois |
| 34 | Roger Moore | 1 | Son | — | Illinois |
| 35 | Isaac Arnold | 61 | Head | — | Illinois |
| 36 | John Arnold THIS PERSON | 41 | Son | Sewer Construction | Illinois |
| 37 | Richard Arnold | 39 | Son | — | Illinois |
| 38 | George Arnold | 16 | Son | — | Illinois |
| 39 | Clayton Buchanan | 73 | Head | Retired | Illinois |
| 40 | Nellie Buchanan | 67 | Wife | — | Kentucky |
Pedigree Summary
John + 2 siblings
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)