HT
Harold Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Des-Moines-County, Iowa
Our Model Tree links this Harold Thompson across the 1920, 1930 and 1940 US Censuses in Des-Moines-County, Iowa (XGBoost, ~Confirmed), with identified parents James & James — first a head (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Des-Moines-County, Iowa |
| Surname | Thompson |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Des Moines |
| Additional Details | |
| Occupation | Laborer |
| Industry | Contractors |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 800 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Est. Birth Year | ~1912 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Susan Thompson | Daughter | — | 1 | ~1939 |
| Martha Thompson | Daughter | — | 4 | ~1936 |
| Harold Thompson | Head | — | 28 | ~1912 |
| Mrs Thompson | Spouse | — | 23 | ~1917 |
Census Appearances
1920
Des Moines, …
Son, age 7
Des Moines, Iowa · implied b. ~1913 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Des Moines, …
Son, age 18
Des Moines, Iowa · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harold |
| 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 | Truck Driver |
| Industry | Oil Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Des-Moines-County, Iowa
Head, age 28
Des-Moines-County, Iowa · implied b. ~1912 — 4 household members
| Surname | Thompson |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Des Moines |
| Occupation | Laborer |
| Industry | Contractors |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 800 |
| 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 Harold Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Thompson (~0.92 confidence) and father James Thompson (~0.92 confidence) and mother Clara Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Thompson
b. ~1875
Source father
● Household
· direct · ~0.92
Father
James Thompson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Clara Thompson
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Thompson
Head · 1940 · age 28 · b. ~1912 · 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 — Des-Moines-County, Iowa
Open full size
1940 US Federal Census — Des-Moines-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01156-00683)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edna Mae Hallack | 13 | Daughter | — | Iowa |
| 42 | Antonia Hallack | 11 | Daughter | — | Iowa |
| 43 | Charles Hallack | 9 | Son | — | Iowa |
| 44 | Margaret Hallack | 3 | Daughter | — | Iowa |
| 45 | John Dorch | 64 | Head | Laborer | Illinois |
| 46 | Ida Dorch | 43 | Wife | — | Iowa |
| 47 | Phyllis Dorch | 12 | Daughter | — | Iowa |
| 48 | Mrs Mary Honor | 41 | Head | Housework | Iowa |
| 49 | H. Darrell Honor | 19 | Son | — | Iowa |
| 50 | Alfred Honor | 18 | Son | — | Iowa |
| 51 | H. Merle Honor | 14 | Son | — | Iowa |
| 52 | Phyllis Honor | 9 | Daughter | — | Iowa |
| 53 | Frank Knight | 48 | Head | Blacksmith | Iowa |
| 54 | Mrs Harriett Knight | 57 | Wife | — | Indiana |
| 55 | Miss A. Kate Boormeyer | 72 | Head | Seamstress | Iowa |
| 56 | Miss Mary M. Boormeyer | 70 | Sister | Seamstress | Iowa |
| 57 | Harold Thompson THIS PERSON | 28 | Head | Laborer | Iowa |
| 58 | Mrs Elizabeth Thompson | 23 | Wife | — | Iowa |
| 59 | Martha Thompson | 4 | Daughter | — | Iowa |
| 60 | Susan Thompson | 1 | Daughter | — | Iowa |
| 61 | Henry Lenz | 52 | Head | Upholstering | Iowa |
| 62 | Mrs Eunice Lenz | 49 | Wife | — | Iowa |
| 63 | Jacob Walters | 65 | Head | Dyer | Russia |
| 64 | Mrs Elizabeth Walters | 63 | Wife | — | Russia |
| 65 | Mrs Julia Scarf | 32 | Daughter | Clerk | Iowa |
| 66 | Dudley Walters | 10 | Grandson | — | Iowa |
| 67 | William Peebles | 55 | Head | Watchman | Kansas |
| 68 | Mrs Amy Peebles | 49 | Wife | Machine Opr | Illinois |
| 69 | Samuel Eccles | 42 | Head | Bus Driver | Iowa |
| 70 | Mrs Mary Eccles | 44 | Wife | — | Tennessee |
| 71 | Wayne Eccles | 19 | Son | Laborer | Iowa |
| 72 | Jack Eccles | 23 | Son | Assembly Line | Iowa |
| 73 | Mrs Maryanne Eccles | 20 | Daughter-in-law | — | Iowa |
| 74 | Jerry Eccles | 0 | Grandson | — | Iowa |
| 75 | C. K. Nelson | 76 | Head | — | Denmark |
| 76 | Earl Brockway | 26 | Head | Laborer | Iowa |
| 77 | Mrs Audrey Brockway | 25 | Wife | — | Illinois |
| 78 | Larry Brockway | 2 | Son | — | Iowa |
| 79 | Leslie A. Bendit | 51 | Head | Electrician | Iowa |
| 80 | Mrs Amelia Bendit | 44 | Wife | Trimmer | Iowa |
Pedigree Summary
Harold
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)