HJ
Herbert Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Herbert Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents John & Frederick — first a son (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Johnson |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Iv. Clerk |
| Industry | Pullman Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 343 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Iv. Clerk |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Herbert | Age | Birth yr |
|---|---|---|---|---|
| John Johnson | Head | — | 69 | ~1871 |
| Ivar Johnson | Son | — | 38 | ~1902 |
| Carl Johnson | Son | — | 22 | ~1918 |
| Herbert Johnson | Son | — | 20 | ~1920 |
| Frederick Johnson | Son | — | 24 | ~1916 |
| Emma Johnson | Spouse | — | 60 | ~1880 |
Census Appearances
1920
Cook, Illinois
Son, age
Cook, Illinois · implied b. ~1920 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Herbert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 20
Cook-County, Illinois · implied b. ~1920 — 6 household members
| Surname | Johnson |
| Given Name | Herbert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Iv. Clerk |
| Industry | Pullman Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 343 |
| Highest Grade | H 4 |
| 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 Herbert Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Johnson (~0.92 confidence) and father Frederick Johnson (~0.92 confidence) and father Fred Johnson (~0.92 confidence) and mother Amanda Johnson (~0.92 confidence) and mother Emma Johnson (~0.92 confidence) and mother Emma Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Frederick Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Fred Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Amanda Johnson
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Emma Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Emma Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Herbert Johnson
Son · 1940 · age 20 · b. ~1920 · Illinois
★ You are viewing this record
Sibling
Carl Johnson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frederick Johnson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ivar Johnson
Sibling · 1940 · age 38
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
40 people indexed on this census page (nara:1940:m-t0627-00940-00037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gunnar B. Lydman | 50 | Head | Driver | Illinois |
| 42 | Laura D. Lydman | 54 | Wife | — | Ohio |
| 43 | Leroy Lydman | 17 | Son | Clerk | Illinois |
| 44 | Simona L. Lydman | 13 | Son | — | Illinois |
| 45 | Neil B. Partlow | 31 | Head | Clerk | Illinois |
| 46 | Ruth Partlow | 28 | Wife | Clerk | Illinois |
| 47 | John Johnson | 69 | Head | — | Sweden |
| 48 | Emma Johnson | 60 | Wife | — | Sweden |
| 49 | Ivar Johnson | 38 | Son | Watchman | Illinois |
| 50 | Frederick Johnson | 24 | Son | Recreation Leader | Illinois |
| 51 | Carl E. Johnson | 22 | Son | Recreation Leader | Illinois |
| 52 | Herbert Johnson THIS PERSON | 20 | Son | Iv. Clerk | Illinois |
| 53 | Carl Johns | 34 | Head | Buyer | Michigan |
| 54 | Inez D. Johns | 34 | Wife | — | Illinois |
| 55 | Nancy Johns | 4 | Daughter | — | Illinois |
| 56 | Sally Johns | 1 | Daughter | — | Illinois |
| 57 | Gerard S. Matthys | 57 | Head | Mechanical Engineer | Holland |
| 58 | Ida J. Matthys | 54 | Wife | — | Holland |
| 59 | Lesley A. Matthys | 20 | Daughter | — | Illinois |
| 60 | Lois Matthys | 16 | Daughter | — | Illinois |
| 61 | John Matthys | 9 | Son | — | Illinois |
| 62 | Edwin Johnson | 49 | Head | Foreman | Illinois |
| 63 | Edna Johnson | 45 | Sister | — | Illinois |
| 64 | Lester Madelene | 41 | Sister | Teacher | Illinois |
| 65 | Charles M. Fisher | 47 | Head | Plumber | Illinois |
| 66 | Gertrude Fisher | 43 | Wife | — | Illinois |
| 67 | Sherman Fisher | 15 | Son | — | Illinois |
| 68 | Carol Fisher | 7 | Daughter | — | Illinois |
| 69 | Anna Kemmer | 67 | Mother-in-law | — | Germany |
| 70 | Carolyn Meisner | 42 | Sister-in-law | Supervisor | Illinois |
| 71 | Isabel Meisner | 19 | Niece | — | Illinois |
| 72 | Thomas Fortuna | 49 | Head | Helper | Poland |
| 73 | Martha Fortuna | 44 | Wife | — | Illinois |
| 74 | Ann Fortuna | 22 | Daughter | Mailing Clerk | Illinois |
| 75 | Edward Fortuna | 20 | Son | — | Illinois |
| 76 | Anthony Fortuna | 12 | Son | — | Illinois |
| 77 | Theresa Fortuna | 10 | Daughter | — | Illinois |
| 78 | Eleanor Fortuna | 7 | Daughter | — | Illinois |
| 79 | Louise Fortuna | 3 | Daughter | — | Illinois |
| 80 | Joseph Fortuna | 2 | Son | — | Illinois |
Pedigree Summary
Herbert + 3 siblings
Gen 1 · 6 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)