OJ
Oliver Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Illinois
Our Model Tree links this Oliver Johnson across the 1920, 1930 and 1940 US Censuses in Boone-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 4-person household.
Age 57
b. ~1883
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Illinois |
| Surname | Johnson |
| Given Name | Oliver |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Belvidere City |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Occupation | machinist |
| Industry | canning co |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 1428 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Machinist |
| Township / Ward | Belvidere City |
| Est. Birth Year | ~1883 |
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 Oliver | Age | Birth yr |
|---|---|---|---|---|
| Oliver Johnson | Head | — | 57 | ~1883 |
| Nellie Johnson | Spouse | — | 50 | ~1890 |
| Vera Johnson | Daughter | — | 20 | ~1920 |
| Boyd Johnson | Son | — | 16 | ~1924 |
Census Appearances
1920
Boone, Illinois
Head, age 36
Boone, Illinois · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oliver |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Occupation | Machinist |
| Industry | Farm Impl. Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Boone, Illinois
Other, age 46
Boone, Illinois · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Oliver |
| Relationship to Head | Son in law |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 30 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Occupation | Carpenter |
| Industry | House Building Company |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Boone-County, Illinois
Head, age 57
Boone-County, Illinois · implied b. ~1883 — 4 household members
| Surname | Johnson |
| Given Name | Oliver |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Belvidere City |
| 1935 Residence (County) | Boone |
| Occupation | machinist |
| Industry | canning co |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 1428 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| 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 Oliver Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Oliver Johnson
Head · 1940 · age 57 · b. ~1883 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Boone-County, Illinois
Open full size
1940 US Federal Census — Boone-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00760-00130)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Winifred Langdon | 52 | wife | None | Illinois |
| 2 | Carlos H Fillvicher|Fillricher | 25 | Head | Baker | Illinois |
| 3 | Dorothy M Fillvicher|Fillricher | 23 | wife | None | Illinois |
| 4 | Frank Clark | 66 | Head | Fire Chief | Wisconsin |
| 5 | Anna Clark | 60 | wife | None | Illinois |
| 6 | Ralph Walker | 28 | Head | Machine Operator | Iowa |
| 7 | Marion W Walker | 35 | wife | None | Illinois |
| 8 | Donna M Walker | 8 | daughter | — | California |
| 9 | Virginia D Walker | 3 | daughter | — | California |
| 10 | Arthur B Southwood | 63 | Head | Department Mgr | England |
| 11 | Anne Southwood | 62 | wife | None | Illinois |
| 12 | George H Rudolph | 69 | Head | Machine Operator | Illinois |
| 13 | Ellen Rudolph | 64 | wife | None | Illinois |
| 14 | Ruth M Heligas | 29 | Head | School Teacher | Illinois |
| 15 | Agnes K Gray | 28 | partner | School Teacher | Illinois |
| 16 | Frederick J Hope | 58 | Head | Conductor | Illinois |
| 17 | Mary L Hope | 53 | wife | None | Illinois |
| 18 | Marshall Howard Stachel | 57 | Head | None | Illinois |
| 19 | Irvine R Stachel | 54 | brother | Laborer | Illinois |
| 20 | Edward Mcmahon | 58 | Head | Polisher | Ireland |
| 21 | Katharine Mcmahon | 53 | wife | None | Irish Free State |
| 22 | Helen V Mcmahon | 27 | daughter | Beauty Operator | Illinois |
| 23 | Alfred H Gamlin | 49 | Head | Salesman | England |
| 24 | Isla D Gamlin | 47 | wife | None | Illinois |
| 25 | Keith G Gamlin | 23 | son | Auto Salesman | Illinois |
| 26 | Gail B Gamlin | 19 | son | Salesman | Illinois |
| 27 | Gilbert R Julin | 36 | Head | Dairy Operator | Illinois |
| 28 | Mildred C Julin | 32 | wife | None | Illinois |
| 29 | Sandra L Julin | 4 | daughter | — | Illinois |
| 30 | Mary A Julin | 1 | daughter | — | Illinois |
| 31 | Oscar M Julin | 50 | Head | Assistant Manager | Illinois |
| 32 | Alma B Julin | 45 | wife | None | Illinois |
| 33 | Betty Julin | 22 | daughter | Material Inspector | Illinois |
| 34 | Shirley Julin | 17 | daughter | Bottle Washer | Illinois |
| 35 | Oliver Johnson THIS PERSON | 57 | Head | Machinist | Illinois |
| 36 | Nellie Johnson | 50 | wife | None | Illinois |
| 37 | Vera M Johnson | 20 | daughter | Stenographer | Illinois |
| 38 | Boyd E Johnson | 16 | son | None | Illinois |
| 39 | Harold B Moore | 32 | Head | Mail Carrier | Illinois |
| 40 | Jeanette J Moore | 31 | wife | None | 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)