EJ
Elmer Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Lyon-County, Iowa
Our Model Tree links this Elmer Johnson across the 1920, 1930 and 1940 US Censuses in Lyon-County, Iowa (XGBoost, ~Confirmed), with identified parents Henry & Carrie — first a son (b.~1905), then head of a 2-person household.
Age 35
b. ~1905
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Lyon-County, Iowa |
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Lytton |
| 1935 Residence (County) | Sac |
| Additional Details | |
| Occupation | Operator |
| Industry | on own Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Operator |
| Township / Ward | Garfield Twp |
| Est. Birth Year | ~1905 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Elmer | Age | Birth yr |
|---|---|---|---|---|
| Carrie Johnson | Head | — | 60 | ~1880 |
| Elmer Johnson | Son | — | 35 | ~1905 |
Census Appearances
1920
Lyon, Iowa
Son, age 15
Lyon, Iowa · implied b. ~1905 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm laborer |
| Industry | Home farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Lyon, Iowa
Son, age 25
Lyon, Iowa · implied b. ~1905 — 37 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm Laborer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Lyon-County, Iowa
Son, age 35
Lyon-County, Iowa · implied b. ~1905 — 2 household members
| Surname | Johnson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Lytton |
| 1935 Residence (County) | Sac |
| Occupation | Operator |
| Industry | on own Farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | H 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 Elmer Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Johnson (~0.92 confidence) and mother Carrie Johnson (~0.92 confidence) and mother Carrie Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Johnson
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Carrie Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Carrie Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elmer Johnson
Son · 1940 · age 35 · b. ~1905 · Iowa
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Lyon-County, Iowa
Open full size
1940 US Federal Census — Lyon-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01179-00147)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold L. Rush | 1 | Son | — | Iowa |
| 2 | Jeanette Oldcamp | 19 | Hired girl | Hired Girl | Iowa |
| 3 | Ted Hartman | 28 | Laborer | Laborer | Iowa |
| 4 | Alvin Pecko | 29 | Laborer | Laborer | Iowa |
| 5 | Bernard Pecko | 27 | Laborer | Laborer | Iowa |
| 6 | John L. Meeman | 38 | Laborer | Laborer | Iowa |
| 7 | Gladys Meeman | 34 | Wife | — | Iowa |
| 8 | Gerald Meeman | 11 | Son | — | Iowa |
| 9 | Dennis Meeman | 9 | Son | — | Iowa |
| 10 | Frances Meeman | 8 | Daughter | — | Iowa |
| 11 | Clayton Meeman | 6 | Son | — | Iowa |
| 12 | Shirley Meeman | 4 | Daughter | — | Iowa |
| 13 | Merlin Meeman | 2 | Son | — | Iowa |
| 14 | Gladys Meeman | 1 | Daughter | — | Iowa |
| 15 | Lloyd Hendrickson | 25 | Head | Laborer | Minnesota |
| 16 | Jeanette Hendrickson | 17 | Wife | — | Iowa |
| 17 | Lois Hendrickson | 0 | Daughter | — | Iowa |
| 18 | Earl Zink | 26 | Head | Laborer | Iowa |
| 19 | Alvia Zink | 24 | Wife | — | Iowa |
| 20 | Muriel Zink | 4 | Daughter | — | Iowa |
| 21 | Mary L. Zink | 3 | Daughter | — | Iowa |
| 22 | Mildred L. Zink | 1 | Daughter | — | Iowa |
| 23 | Pascal Brommer | 20 | Head | Operator | Iowa |
| 24 | Cora Brommer | 18 | Wife | — | Iowa |
| 25 | N. P. Schroff | 57 | Head | Operator | Iowa |
| 26 | Mollie C. Schroff | 53 | Wife | — | Iowa |
| 27 | Clarence Christianson | 21 | Hired man | Laborer | Iowa |
| 28 | Fred Luenemann | 39 | Head | Operator | Iowa |
| 29 | Amanda Luenemann | 33 | Wife | — | Iowa |
| 30 | Lois Luenemann | 8 | Daughter | — | Iowa |
| 31 | Ruth Luenemann | 6 | Daughter | — | Iowa |
| 32 | Carrie Johnson | 60 | Head | — | Iowa |
| 33 | Elmer Johnson THIS PERSON | 35 | Son | Operator | Iowa |
| 34 | Andrew Pap | 37 | Head | Operator | Iowa |
| 35 | Henrietta Pap | 26 | Wife | — | Iowa |
| 36 | Julia Pap | 6 | Daughter | — | Iowa |
| 37 | Nella Pap | 5 | Daughter | — | Iowa |
| 38 | Duane Pap | 3 | Son | — | Iowa |
| 39 | Johanna Pap | 1 | Daughter | — | Iowa |
| 40 | Art Veldcamp | 40 | Head | Operator | Holland |
Pedigree Summary
Elmer
Gen 1 · 3 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)