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Elmer Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Dubuque-County, Iowa
Our Model Tree links this Elmer Thompson across the 1920, 1930 and 1940 US Censuses in Dubuque-County, Iowa (XGBoost, ~Confirmed), with identified parents William & William — first a head (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dubuque-County, Iowa |
| Surname | Thompson |
| Given Name | Elmer |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque |
| 1935 Residence (County) | Dubuque |
| Additional Details | |
| Occupation | Operator |
| Industry | Sash and Door factory |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1157 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Operator |
| Township / Ward | Dubuque |
| Est. Birth Year | ~1916 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Elmer | Age | Birth yr |
|---|---|---|---|---|
| Sheila Thompson | Daughter | — | 3 | ~1937 |
| Elmer Thompson | Head | — | 24 | ~1916 |
| Cleo Thompson | Spouse | — | 24 | ~1916 |
| Janaan Thompson | Daughter | — | 1 | ~1939 |
Census Appearances
1920
Dubuque, Iowa
Son, age 4
Dubuque, Iowa · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Dubuque, Iowa
Son, age 14
Dubuque, Iowa · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Elmer |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| 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
Dubuque-County, Iowa
Head, age 24
Dubuque-County, Iowa · implied b. ~1916 — 4 household members
| Surname | Thompson |
| Given Name | Elmer |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Dubuque |
| 1935 Residence (County) | Dubuque |
| Occupation | Operator |
| Industry | Sash and Door factory |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1157 |
| Highest Grade | Hs 1 |
| 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 Elmer Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Thompson (~0.92 confidence) and father William Thompson (~0.92 confidence) and mother Mabel Thompson (~0.92 confidence) and mother Mabel Thompson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Thompson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
William Thompson
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Mabel Thompson
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Mabel Thompson
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elmer Thompson
Head · 1940 · age 24 · b. ~1916 · 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 — Dubuque-County, Iowa
Open full size
1940 US Federal Census — Dubuque-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01158-00420)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Leo Addabbo | 8 | son | — | Iowa |
| 2 | John Addabbo | 7 | son | — | Iowa |
| 3 | William Addabbo | 1 | son | — | Iowa |
| 4 | Clarence Larson | 27 | Head | Machinist | Wisconsin |
| 5 | Olive E. Larson | 26 | Wife | — | Iowa |
| 6 | Katherine Ann Larson | 2 | daughter | — | Iowa |
| 7 | Chester Letten | 26 | Head | Woodworker | Wisconsin |
| 8 | Margaret Letten | 23 | Wife | — | Iowa |
| 9 | Barbara Letten | 4 | daughter | — | Iowa |
| 10 | Madonna Letten | 3 | daughter | — | Iowa |
| 11 | Harry Adrian | 30 | Head | Truck Driver | Iowa |
| 12 | Lucille Adrian | 28 | Wife | — | Wisconsin |
| 13 | Marylyn Adrian | 11 | daughter | — | Wisconsin |
| 14 | Lorraine Adrian | 5 | daughter | — | Wisconsin |
| 15 | Blanche Gagne | 34 | Head | — | Iowa |
| 16 | Delbert Gagne | 13 | son | — | Iowa |
| 17 | Rose Maria Gagne | 12 | daughter | — | Iowa |
| 18 | Donald Gagne | 10 | son | — | Iowa |
| 19 | Violet May Gagne | 6 | daughter | — | Iowa |
| 20 | James Walker | 31 | Head | Salesman | Mississippi |
| 21 | Maria Walker | 31 | Wife | Seamstress | Iowa |
| 22 | Shirley Walker | 10 | daughter | — | Iowa |
| 23 | Elaine Walker | 9 | daughter | — | Iowa |
| 24 | James Jr Walker | 7 | son | — | Iowa |
| 25 | Arthur Messenbrink | 26 | Head | Truck Driver | Iowa |
| 26 | Irene Messenbrink | 28 | Wife | — | Iowa |
| 27 | Judith Messenbrink | 3 | daughter | — | Iowa |
| 28 | Sharon Messenbrink | 1 | daughter | — | Iowa |
| 29 | Leo Messenbrink | 32 | brother | Odd Jobs | Minnesota |
| 30 | James Mcelmeel | 24 | Head | Boxmaker | Iowa |
| 31 | Helen Mcelmeel | 26 | Wife | — | Iowa |
| 32 | Frank Story | 23 | Head | Millworker | Iowa |
| 33 | Rae Story | 22 | Wife | Folder | Iowa |
| 34 | Elmer Thompson THIS PERSON | 24 | Head | Operator | Iowa |
| 35 | Cleo Thompson | 24 | Wife | — | Iowa |
| 36 | Sheila Thompson | 3 | daughter | — | Iowa |
| 37 | Janaan Thompson | 1 | daughter | — | Iowa |
| 38 | James L. Swift | 53 | Head | — | Wisconsin |
| 39 | Ellen B. Swift | 52 | Wife | Janitress | Wisconsin |
| 40 | Emelyn Swift | 27 | daughter | Loading Machine | Wisconsin |
Pedigree Summary
Elmer
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)