KJ
Kenneth Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Humboldt-County, Iowa
Our Model Tree links this Kenneth Johnson across the 1920, 1930 and 1940 US Censuses in Humboldt-County, Iowa (XGBoost, ~Confirmed), with identified parents Claude & Edward — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Humboldt-County, Iowa |
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Humboldt |
| 1935 Residence (County) | Humboldt |
| Additional Details | |
| Occupation | Book Keeper |
| Industry | Seed Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 600 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Book Keeper |
| Township / Ward | Humboldt |
| Est. Birth Year | ~1917 |
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 Kenneth | Age | Birth yr |
|---|---|---|---|---|
| Edward Johnson | Head | — | 56 | ~1884 |
| Kenneth Johnson | Son | — | 23 | ~1917 |
| Keith Johnson | Son | — | 20 | ~1920 |
| Nathan Johnson | Son | — | 12 | ~1928 |
| Gordon Johnson | Son | — | 16 | ~1924 |
| Mabel Johnson | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Humboldt, Iowa
Son, age 3
Humboldt, Iowa · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kenneth L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Humboldt, Iowa
Son, age 13
Humboldt, Iowa · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Kenneth S. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Humboldt-County, Iowa
Son, age 23
Humboldt-County, Iowa · implied b. ~1917 — 6 household members
| Surname | Johnson |
| Given Name | Kenneth |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Humboldt |
| 1935 Residence (County) | Humboldt |
| Occupation | Book Keeper |
| Industry | Seed Co. |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 600 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Kenneth Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Claude Johnson (~0.92 confidence) and father Edward Johnson (~0.92 confidence) and mother Mable Johnson (~0.92 confidence) and father Edward Johnson (~0.92 confidence) and mother Mabel Johnson (~0.92 confidence) and mother Mabel Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Claude Johnson
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Edward Johnson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Mable Johnson
b. ~1889
Source mother
● Household
· direct · ~0.92
Father
Edward Johnson
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mabel Johnson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mabel Johnson
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Kenneth Johnson
Son · 1940 · age 23 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Nathan Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Keith Johnson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Johnson
Sibling · 1940 · age 16
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 — Humboldt-County, Iowa
Open full size
1940 US Federal Census — Humboldt-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01167-00688)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | M. Harry Burns | 52 | Head | Minister | Illinois |
| 2 | Stella Burns | 51 | Wife | — | Illinois |
| 3 | K. William Burns | 14 | Son | — | Iowa |
| 4 | Fred S. Bowen | 54 | Head | Proprietor | Iowa |
| 5 | Lottie Bowen | 54 | Wife | — | Illinois |
| 6 | Beryl Bowen | 27 | Daughter | Teacher | Iowa |
| 7 | Lloyd Samuels | 42 | Head | Proprietor | Illinois |
| 8 | Alice Samuels | 37 | Wife | — | Iowa |
| 9 | Neil Samuels | 17 | Son | — | Iowa |
| 10 | Edward Johnson | 56 | Head | Janitor | Iowa |
| 11 | Mabel Johnson | 50 | Wife | — | Iowa |
| 12 | Kenneth Johnson THIS PERSON | 23 | Son | Book Keeper | Iowa |
| 13 | Keith Johnson | 20 | Son | Salesman | Iowa |
| 14 | Gordon Johnson | 16 | Son | — | Iowa |
| 15 | Nathan Johnson | 12 | Son | — | Iowa |
| 16 | Lizzie Raffle | 71 | Head | — | Iowa |
| 17 | Mary Raffle | 47 | Daughter | — | Iowa |
| 18 | Myrtle Hewitt | 40 | Lodger | Secretary | Iowa |
| 19 | Alice Daniels | 27 | Lodger | Waitress | Iowa |
| 20 | T. Howard Price | 29 | Head | Electrician | So. Dakota |
| 21 | Mary Margaret Price | 24 | Wife | — | Iowa |
| 22 | Gayle Lee Price | 3 | Daughter | — | Iowa |
| 23 | Richard Leroy Price | 2 | Son | — | Iowa |
| 24 | Irving Donilliger | 31 | Head | Truck Driver | Iowa |
| 25 | Beulah Donilliger | 24 | Wife | — | Iowa |
| 26 | Marcia Donilliger | 4 | Daughter | — | Iowa |
| 27 | Sylvia Donilliger | 4 | Daughter | — | Iowa |
| 28 | Jane Donilliger | 1 | Daughter | — | Iowa |
| 29 | Merritt Coon | 35 | Head | Proprietor | Iowa |
| 30 | Nina Coon | 29 | Wife | — | Iowa |
| 31 | Sandra Coon | 6 | Daughter | — | Iowa |
| 32 | David Coon | 3 | Son | — | Iowa |
| 33 | Homer Erickson | 33 | Head | Proprietor | Missouri |
| 34 | Beulah Erickson | 36 | Wife | — | Kansas |
| 35 | Sharon Erickson | 4 | Daughter | — | Kansas |
| 36 | Erick Erickson | 2 | Son | — | Kansas |
| 37 | Carol Elaine Erickson | 0 | Daughter | — | Iowa |
| 38 | Jennie Hett | 70 | Mother-in-law | — | Illinois |
| 39 | Geo Brock | 53 | Head | Proprietor | Minnesota |
| 40 | Pauline Brock | 53 | Wife | — | Iowa |
Pedigree Summary
Kenneth + 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)