LJ
Leo Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Shelby-County, Iowa
Our Model Tree links this Leo Johnson across the 1930 and 1940 US Censuses in Shelby-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Shelby-County, Iowa |
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Union Twp |
| 1935 Residence (County) | Shelby |
| Additional Details | |
| Occupation | laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Union Twp |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Leo | Age | Birth yr |
|---|---|---|---|---|
| Jean Johnson | Spouse | — | 39 | ~1901 |
| Leo Johnson | Son | — | 15 | ~1925 |
| Robert Johnson | Son | — | 10 | ~1930 |
| Walter Johnson | Son | — | 2 | ~1938 |
| Gerald Johnson | Son | — | 17 | ~1923 |
| Leonard Johnson | Son | — | 7 | ~1933 |
| Gertrude Johnson | Daughter | — | 12 | ~1928 |
| Harry Johnson | Head | — | 44 | ~1896 |
| Lawrence Johnson | Son | — | 19 | ~1921 |
Census Appearances
1930
Shelby, Iowa
Son, age 5
Shelby, Iowa · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Nebraska |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Shelby-County, Iowa
Son, age 15
Shelby-County, Iowa · implied b. ~1925 — 9 household members
| Surname | Johnson |
| Given Name | Leo |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Union Twp |
| 1935 Residence (County) | Shelby |
| Occupation | laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Iowa |
| 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 Leo Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Leo Johnson
Son · 1940 · age 15 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Gerald Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lawrence Johnson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Johnson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leonard Johnson
Sibling · 1940 · age 7
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 — Shelby-County, Iowa
Open full size
1940 US Federal Census — Shelby-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01204-00456)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Constance Freund | 1 | daughter | — | Iowa |
| 42 | Ellen Freund | 0 | daughter | — | Iowa |
| 43 | Lawrence Gaul | 27 | Head | Farm Labor | Iowa |
| 44 | Anton Freund | 59 | Head | Farmer | Iowa |
| 45 | Walburga Freund | 58 | Wife | — | Iowa |
| 46 | Kathryn Freund | 28 | daughter | — | Iowa |
| 47 | Anthony Jr. Freund | 22 | son | Farmer | Iowa |
| 48 | Anna Marie Freund | 20 | daughter | — | Iowa |
| 49 | Rita Freund | 17 | daughter | — | Iowa |
| 50 | Helen Freund | 14 | daughter | — | Iowa |
| 51 | Harry W. Johnson | 44 | Head | Farmer | Iowa |
| 52 | Jean Johnson | 39 | Wife | — | Iowa |
| 53 | Lawrence Johnson | 19 | son | Laborer | Iowa |
| 54 | Gerald Johnson | 17 | son | Laborer | Iowa |
| 55 | Leo Johnson THIS PERSON | 15 | son | Laborer | Iowa |
| 56 | Gertrude Johnson | 12 | daughter | — | Iowa |
| 57 | Robert Johnson | 10 | son | — | Iowa |
| 58 | Leonard Johnson | 7 | son | — | Iowa |
| 59 | Walter Johnson | 2 | son | — | Iowa |
| 60 | Bernard Hart | 33 | Head | Farmer | Iowa |
| 61 | Dora Hart | 41 | Wife | — | Iowa |
| 62 | Henry Erlbacher | 54 | Brother-in-law | Farm Labor | Iowa |
| 63 | Henry Wageman | 29 | Head | Farmer | Iowa |
| 64 | Ann Wageman | 26 | Wife | — | Iowa |
| 65 | Sharon Lee Wageman | 1 | daughter | — | Iowa |
| 66 | Karen Kay Wageman | 0 | daughter | — | Iowa |
| 67 | Edward Freund | 26 | Hired hand | Farm Labor | Iowa |
| 68 | — | None | — | — | — |
| 69 | Arnold Schreider | 38 | Head | Farmer | Iowa |
| 70 | Annabelle Schreider | 30 | Wife | — | Iowa |
| 71 | Betty Jean Schreider | 8 | daughter | — | Iowa |
| 72 | Robert Scott | 49 | Head | Farmer | Iowa |
| 73 | Theresa Scott | 48 | Wife | — | Iowa |
| 74 | Mildred Scott | 24 | daughter | School Teacher | Iowa |
| 75 | Roberta Scott | 18 | daughter | — | Iowa |
| 76 | Frances Scott | 12 | daughter | — | Iowa |
| 77 | Louis J. Eckerman | 58 | Head | Farmer | Iowa |
| 78 | Hattie Mrs. Kirby | 56 | Head | Proprietor | Iowa |
| 79 | Zilla M. Kirby | 17 | daughter | — | Iowa |
| 80 | Elmer Mcbride | 63 | Head | Farmer | Iowa |
Related Census Records
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)