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John Boyd — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this John Boyd across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Charles & Minnie — first a son (b.~1904), then head of a 3-person household.
Age 36
b. ~1904
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Boyd |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Painter |
| Industry | Contracting Co. |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 500 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Painter |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1904 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Charles Boyd | Head | — | 68 | ~1872 |
| John Boyd | Son | — | 36 | ~1904 |
| Minnie Boyd | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Polk, Iowa
Son, age 16
Polk, Iowa · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Ohio |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 24
Polk, Iowa · implied b. ~1906 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Boyd |
| Given Name | John O |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Ohio |
| Occupation | Clerk |
| Industry | Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 36
Polk-County, Iowa · implied b. ~1904 — 3 household members
| Surname | Boyd |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Painter |
| Industry | Contracting Co. |
| Class of Worker | OA |
| Hours Worked | 30 |
| Income (1939) | 500 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| 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 John Boyd across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Boyd (~0.92 confidence) and mother Minnie Boyd (~0.92 confidence) and mother Minnie Boyd (~0.92 confidence) and mother Minnie Boyd (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Boyd
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Minnie Boyd
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Minnie Boyd
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Minnie Boyd
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Boyd
Son · 1940 · age 36 · b. ~1904 · 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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01194-00037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert Drake | 26 | Head | Roofer | Iowa |
| 42 | Ruth Drake | 24 | Wife | Nurse | Montana |
| 43 | Larry Drake | 1 | Son | — | Iowa |
| 44 | Dorothy Pitts | 47 | Housekeeper | Housekeeper | Iowa |
| 45 | Ardo Clark | 61 | Head | Burner Repairing | Iowa |
| 46 | Bess Clark | 65 | Wife | — | Virginia |
| 47 | James Clark | 22 | Son | — | Iowa |
| 48 | Raymond Sult | 25 | Head | Laborer | Iowa |
| 49 | Gladys Sult | 30 | Wife | — | Iowa |
| 50 | Virginia Sult | 7 | Daughter | — | Iowa |
| 51 | Rayma Sult | 5 | Daughter | — | Iowa |
| 52 | Ronald Sult | 3 | Son | — | Iowa |
| 53 | Jessie Bond | 58 | Mother-in-law | — | Iowa |
| 54 | Samuel Hickson | 41 | Head | Stock Clerk | Nebraska |
| 55 | Alice Hickson | 31 | Wife | — | Nebraska |
| 56 | Richard Hickson | 11 | Son | — | Nebraska |
| 57 | Henry M. Findley | 75 | Head | — | Ohio |
| 58 | Elsie Findley | 72 | Wife | — | Iowa |
| 59 | Finley Moore | 22 | Nephew | Welder | Iowa |
| 60 | Arley Middlekauff | 27 | Head | Laborer | Iowa |
| 61 | Jayne Middlekauff | 25 | Wife | — | Iowa |
| 62 | Robert Middlekauff | 6 | Son | — | Iowa |
| 63 | Wilda Middlekauff | 4 | Daughter | — | Iowa |
| 64 | Karin Middlekauff | 1 | Daughter | — | Iowa |
| 65 | Julia A. Henry | 79 | Head | — | Iowa |
| 66 | Ray F. Behm | 26 | Head | Carpenter | Minnesota |
| 67 | Lois Behm | 23 | Wife | — | Iowa |
| 68 | Roger Behm | 4 | Son | — | Iowa |
| 69 | Tom J. Valen | 58 | Father-in-law | Carpenter | Norway |
| 70 | Charles Boyd | 68 | Head | Electrician | Missouri |
| 71 | Minnie Boyd | 58 | Wife | — | Ohio |
| 72 | John Boyd THIS PERSON | 36 | Son | Painter | Iowa |
| 73 | Alwight Toyne | 32 | Head | Route Man | Iowa |
| 74 | Mary Toyne | 28 | Wife | — | Iowa |
| 75 | Frank Jerns | 65 | Head | — | New York |
| 76 | Josephine Jerns | 52 | Wife | Cook | Iowa |
| 77 | Eva Carson | 33 | Lodger | Reg. Nurse | Iowa |
| 78 | Harley A. Townsend | 31 | Head | Dept. Mgr. | Iowa |
| 79 | Mildred Townsend | 27 | Wife | Clerk | Iowa |
| 80 | Carolyn Townsend | 9 | Daughter | — | Iowa |
Pedigree Summary
John
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)