LJ
Lester Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Clinton-County, Iowa
Our Model Tree links this Lester Johnson across the 1920, 1930 and 1940 US Censuses in Clinton-County, Iowa (XGBoost, ~Confirmed), with identified parents Sam & Allan — first a son (b.~1902), then head of a 3-person household.
Age 38
b. ~1902
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clinton-County, Iowa |
| Surname | Johnson |
| Given Name | Lester |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Olive Township |
| 1935 Residence (County) | Clinton |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | S 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Olive Township |
| Est. Birth Year | ~1902 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Lester | Age | Birth yr |
|---|---|---|---|---|
| Lester Johnson | Son | — | 38 | ~1902 |
| Pershing Johnson | Son | — | 22 | ~1918 |
| Ellen Johnson | Head | — | 62 | ~1878 |
Census Appearances
1920
Clinton, Iowa
Son, age 18
Clinton, Iowa · implied b. ~1902 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Lester |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Son, age 28
Clinton, Iowa · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Lester |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Gen Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Son, age 38
Clinton-County, Iowa · implied b. ~1902 — 3 household members
| Surname | Johnson |
| Given Name | Lester |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Olive Township |
| 1935 Residence (County) | Clinton |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | S 8 |
| 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 Lester Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Sam Johnson (~0.92 confidence) and father Allan Johnson (~0.92 confidence) and mother Ellen Johnson (~0.92 confidence) and mother Ellen Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Sam Johnson
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Allan Johnson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Ellen Johnson
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Ellen Johnson
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Lester Johnson
Son · 1940 · age 38 · b. ~1902 · Iowa
★ You are viewing this record
Sibling
Pershing Johnson
Sibling · 1940 · age 22
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 — Clinton-County, Iowa
Open full size
1940 US Federal Census — Clinton-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01151-00256)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Noel | 17 | son | Helper | Iowa |
| 2 | Cleone Noel | 14 | daughter | — | Iowa |
| 3 | Noel | 9 | son | — | Iowa |
| 4 | Carl Frerichs | 31 | head | Farmer | Illinois |
| 5 | Minnie Frerichs | 31 | wife | — | Illinois |
| 6 | Eric Thomsen | 56 | head | Farmer | Norway |
| 7 | Eldora Thomsen | 42 | wife | — | Iowa |
| 8 | Paul Ludwig | 43 | hired man | Laborer | Iowa |
| 9 | Theodore Fellner | 63 | head | Farmer | Iowa |
| 10 | Bridget Fellner | 53 | wife | — | Iowa |
| 11 | Ralph Whitman | 39 | head | Farmer | Iowa |
| 12 | Alice M. Whitman | 39 | wife | — | Iowa |
| 13 | Irene Whitman | 17 | daughter | — | Iowa |
| 14 | Raymond Whitman | 14 | son | — | Iowa |
| 15 | Lois Whitman | 10 | daughter | — | Iowa |
| 16 | Betty Lou Whitman | 4 | daughter | — | Iowa |
| 17 | Ephraim Goodell | 48 | hired man | Laborer | Iowa |
| 18 | James Duke | 31 | head | Farmer | Iowa |
| 19 | Lois Duke | 26 | wife | — | Iowa |
| 20 | Delores Duke | 5 | daughter | — | Iowa |
| 21 | Otto Duke | 56 | cousin | Laborer | Iowa |
| 22 | Ellen Johnson | 62 | head | — | Iowa |
| 23 | Lester Johnson THIS PERSON | 38 | son | Farmer | Iowa |
| 24 | Pershing Johnson | 22 | son | Farmer | Iowa |
| 25 | Katherine Lindeman | 57 | head | — | Germany |
| 26 | Dorothy Lindeman | 24 | daughter | Servant | Iowa |
| 27 | John Boehlig | 52 | brother | Farmer | Iowa |
| 28 | Walter Husen | 38 | head | Farmer | Iowa |
| 29 | Viola Husen | 36 | wife | — | Iowa |
| 30 | Marleta Husen | 16 | daughter | — | Iowa |
| 31 | Helen Husen | 14 | daughter | — | Iowa |
| 32 | Delmar Husen | 12 | son | — | Iowa |
| 33 | Roy Husen | 9 | son | — | Iowa |
| 34 | Roma Husen | 6 | daughter | — | Iowa |
| 35 | Clarence Olson | 46 | head | Farmer | Iowa |
| 36 | Gretchen Olson | 30 | wife | — | Nebraska |
| 37 | Ellen Olson | 78 | mother | — | Norway |
| 38 | Eli B. Anderson | 67 | head | Farmer | Iowa |
| 39 | Berthana Anderson | 64 | wife | — | Iowa |
| 40 | Curtis Hoffman | 29 | hired man | Laborer | Iowa |
Pedigree Summary
Lester + 1 sibling
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)