JJ
Joseph Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Iowa
Our Model Tree links this Joseph Johnson across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Iowa (XGBoost, ~Confirmed), with identified parents Albert & Albert — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Iowa |
| Surname | Johnson |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fremont Township |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | farm hand |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 300 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farm Hand |
| Township / Ward | Fremont Township |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Clarene Johnson | Daughter | — | 9 | ~1931 |
| Marlene Johnson | Daughter | — | 15 | ~1925 |
| Albert Johnson | Head | — | 45 | ~1895 |
| Joseph Johnson | Son | — | 23 | ~1917 |
| Clara Johnson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Hamilton, Iowa
Son, age 2
Hamilton, Iowa · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Joseph |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Hamilton, Iowa
Son, age 13
Hamilton, Iowa · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Hamilton-County, Iowa
Son, age 23
Hamilton-County, Iowa · implied b. ~1917 — 5 household members
| Surname | Johnson |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fremont Township |
| 1935 Residence (County) | Hamilton |
| Occupation | farm hand |
| Industry | farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 300 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Joseph Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Johnson (~0.92 confidence) and father Albert Johnson (~0.92 confidence) and mother Lena Johnson (~0.92 confidence) and mother Clara Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Johnson
b. ~1895
Source father
● Household
· direct · ~0.92
Father
Albert Johnson
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Lena Johnson
b. ~1900
Source mother
● Household
· direct · ~0.92
Mother
Clara Johnson
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Johnson
Son · 1940 · age 23 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Clarene Johnson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marlene Johnson
Sibling · 1940 · age 15
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 — Hamilton-County, Iowa
Open full size
1940 US Federal Census — Hamilton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01164-00321)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Godfred Gilbert | 45 | Head | Farm Hand | Iowa |
| 42 | Julia Gilbert | 47 | Daughter | — | Iowa |
| 43 | Dale Long | 27 | Hired hand | Farm Hand | Iowa |
| 44 | Elmer Jacobson | 45 | Head | Farmer | Iowa |
| 45 | Cena Jacobson | 39 | Wife | — | Iowa |
| 46 | Vernell Jacobson | 16 | Son | — | Iowa |
| 47 | Le Roy Jacobson | 13 | Son | — | Iowa |
| 48 | Larry Jacobson | 2 | Son | — | Iowa |
| 49 | Albert Johnson | 45 | Head | Farmer | Iowa |
| 50 | Clara Johnson | 45 | Wife | — | Iowa |
| 51 | Joseph Johnson THIS PERSON | 23 | Son | Farm Hand | Iowa |
| 52 | Marlene Johnson | 15 | Daughter | — | Iowa |
| 53 | Clarene Johnson | 9 | Daughter | — | Iowa |
| 54 | Olaf Christopherson | 59 | Head | Farmer | Iowa |
| 55 | Inga Christopherson | 56 | Wife | — | Iowa |
| 56 | Merlin Christopherson | 22 | Son | Farmer | Iowa |
| 57 | Ralph Christopherson | 21 | Son | — | Iowa |
| 58 | Orval Christopherson | 15 | Son | — | Iowa |
| 59 | Raymond Johnson | 35 | Head | Farmer | Iowa |
| 60 | Frank Johnson | 78 | Father | Farmer | Illinois |
| 61 | Arthur Johnson | 39 | Head | Farmer | Iowa |
| 62 | Anna Johnson | 43 | Wife | — | Iowa |
| 63 | Robert Johnson | 12 | Son | — | Iowa |
| 64 | Donna Johnson | 4 | Daughter | — | Iowa |
| 65 | Arthur Christopherson | 54 | Head | Farmer | Iowa |
| 66 | Helen Christopherson | 43 | Wife | — | Iowa |
| 67 | Hans C. Hanson | 61 | Hired hand | Farm Hand | Iowa |
| 68 | Mark D. Nelson | 20 | Head | Farmer | Iowa |
| 69 | Elizabeth Nelson | 19 | Wife | — | Ohio |
| 70 | Jr. Francis Butler | 52 | Head | Farmer | Iowa |
| 71 | Marietta Butler | 50 | Wife | — | Illinois |
| 72 | John Butler | 24 | Son | Farmer | Iowa |
| 73 | Florence Butler | 22 | Daughter | Teacher | Iowa |
| 74 | Genevieve Butler | 19 | Daughter | — | Iowa |
| 75 | Bernadine Butler | 13 | Daughter | — | Iowa |
| 76 | J. E. Jacobson | 79 | Head | Farmer | Norway |
| 77 | Anna Jacobson | 71 | Wife | — | Norway |
| 78 | C. H. Sweeney | 65 | Head | Farmer | Illinois |
| 79 | Sadie M. Sweeney | 55 | Wife | — | Iowa |
| 80 | Russ Fletcher | 61 | Hired hand | Farm Hand | Indiana |
Pedigree Summary
Joseph + 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)