RJ
Ronald Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Harrison-County, Iowa
Our Model Tree links this Ronald Johnson across the 1930 and 1940 US Censuses in Harrison-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 7-person household.
Age 26
b. ~1914
Male
Son
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Harrison-County, Iowa |
| Surname | Johnson |
| Given Name | Ronald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Mondamin Town |
| 1935 Residence (County) | Harrison |
| Additional Details | |
| Occupation | Bus Driver |
| Industry | School Bus |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Bus Driver |
| Township / Ward | Mondamin Town |
| Est. Birth Year | ~1914 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ronald | Age | Birth yr |
|---|---|---|---|---|
| Helen Johnson | Daughter | — | 21 | ~1919 |
| Chris Fonic | Other | — | 30 | ~1910 |
| Ronald Johnson | Son | — | 26 | ~1914 |
| Elizabeth Johnson | Spouse | — | 61 | ~1879 |
| June Johnson | Other | — | 21 | ~1919 |
| John Jacke | Other | — | 28 | ~1912 |
| Albert Johnson | Head | — | 71 | ~1869 |
Census Appearances
1930
Harrison, Iowa
Son, age 16
Harrison, Iowa · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Ronald F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Harrison-County, Iowa
Son, age 26
Harrison-County, Iowa · implied b. ~1914 — 7 household members
| Surname | Johnson |
| Given Name | Ronald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Mondamin Town |
| 1935 Residence (County) | Harrison |
| Occupation | Bus Driver |
| Industry | School Bus |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1000 |
| Highest Grade | Hs 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 Ronald Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ronald Johnson
Son · 1940 · age 26 · b. ~1914 · Iowa
★ You are viewing this record
Sibling
Helen Johnson
Sibling · 1940 · age 21
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 — Harrison-County, Iowa
Open full size
1940 US Federal Census — Harrison-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01166-00436)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lawrence Pratt | 31 | Head | Laborer | Iowa |
| 2 | Virginia Pratt | 31 | Wife | — | Iowa |
| 3 | Delores Pratt | 6 | Daughter | — | Iowa |
| 4 | Patsy Pratt | 5 | Daughter | — | Iowa |
| 5 | Marlene Pratt | 5 | Daughter | — | Iowa |
| 6 | Gene Pratt | 2 | Daughter | — | Iowa |
| 7 | Edith Pratt | 1 | Daughter | — | Iowa |
| 8 | Bernard Conaway | 32 | Head | Laborer | Iowa |
| 9 | Dorothy Conaway | 32 | Wife | — | Nebraska |
| 10 | Kenneth Conaway | 10 | Son | — | Nebraska |
| 11 | George Kruger | 32 | Head | Pile Driver Operator | Missouri |
| 12 | Marie Kruger | 27 | Wife | — | Missouri |
| 13 | George Wm. Kruger | 8 | Son | — | Missouri |
| 14 | Donald Joe Kruger | 3 | Son | — | Missouri |
| 15 | Ada Blair | 70 | Head | Milliner | Iowa |
| 16 | Joe Johnson | 54 | Head | Mail Carrier | Wisconsin |
| 17 | Minnie Johnson | 48 | Wife | — | Iowa |
| 18 | Muriel Johnson | 21 | Daughter | Clerk | Iowa |
| 19 | Elaine Johnson | 14 | Daughter | — | Iowa |
| 20 | Mary E. Pratt | 79 | Mother-in-law | — | Iowa |
| 21 | John H. Klute | 61 | Head | Barber | Iowa |
| 22 | Marie Klute | 58 | Wife | — | Iowa |
| 23 | Harlan Klute | 35 | Head | Dentist | Iowa |
| 24 | Norma Klute | 34 | Wife | — | Iowa |
| 25 | Clarence Leonard | 27 | Head | Oil Station Attendant | Iowa |
| 26 | Lorene Leonard | 18 | Wife | — | Iowa |
| 27 | William Baldwin | 63 | Head | — | Indiana |
| 28 | Grace Baldwin | 64 | Wife | — | Iowa |
| 29 | Edna Sistek | 28 | Daughter | Dining Chicken | Iowa |
| 30 | Virgil Sistek | 9 | Grandson | — | Iowa |
| 31 | Norman Sistek | 8 | Grandson | — | Iowa |
| 32 | Shirley June Forbes | 11 | Daughter | — | Iowa |
| 33 | Albert J. Johnson | 71 | Head | Farmer | Sweden |
| 34 | Elizabeth Johnson | 61 | Wife | — | Iowa |
| 35 | Helen Johnson | 21 | Daughter | Clerk | Iowa |
| 36 | Ronald Johnson THIS PERSON | 26 | Son | Bus Driver | Iowa |
| 37 | June Johnson | 21 | Daughter-in-law | — | South Dakota |
| 38 | John Jacke | 28 | Roomer | Laborer | Iowa |
| 39 | Chris Fonic | 30 | Roomer | Dredge Operator | Nebraska |
| 40 | George Shannon | 45 | Head | Drayman | Iowa |
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)