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Ralph King — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boone-County, Iowa
Our Model Tree links this Ralph King across the 1930 and 1940 US Censuses in Boone-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1903), then head of a 10-person household.
Age 37
b. ~1903
Male
Head
Born: Oklahoma
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boone-County, Iowa |
| Surname | King |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | GW |
| Hours Worked | 4 |
| Income (1939) | 20 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
| Occupation | Laborer |
| Township / Ward | Boone City |
| Est. Birth Year | ~1903 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Ralph King | Head | — | 37 | ~1903 |
| Ester King | Daughter | — | 11 | ~1929 |
| David King | Son | — | 3 | ~1937 |
| Paul King | Son | — | 1 | ~1939 |
| Helen King | Daughter | — | 9 | ~1931 |
| Alan King | Son | — | 2 | ~1938 |
| Robert King | Son | — | 5 | ~1935 |
| Ada King | Spouse | — | 36 | ~1904 |
| Philip King | Son | — | 12 | ~1928 |
| Naomi King | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Boone, Iowa
Head, age 27
Boone, Iowa · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| Age at First Marriage | 27 |
| Father's Birthplace | Canada-English |
| Mother's Birthplace | North Carolina |
| Occupation | Laborer |
| Industry | Add Jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 14 |
| Veteran | No |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
1940
Boone-County, Iowa
Head, age 37
Boone-County, Iowa · implied b. ~1903 — 10 household members
| Surname | King |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Oklahoma |
| 1935 Residence (City) | Boone City |
| 1935 Residence (County) | Boone |
| Occupation | Laborer |
| Industry | Road Construction |
| Class of Worker | GW |
| Hours Worked | 4 |
| Income (1939) | 20 |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Oklahoma |
| Birth Country | United States |
| Birthplace (normalized) | oklahoma |
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 Ralph King across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Ralph King
Head · 1940 · age 37 · b. ~1903 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Boone-County, Iowa
Open full size
1940 US Federal Census — Boone-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01141-00456)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harold W. Sharp | 49 | Head | Contractor | Nebraska |
| 42 | Irena P. Sharp | 46 | Wife | — | Iowa |
| 43 | Dorothy J. Sharp | 20 | Daughter | Bookkeeper | Iowa |
| 44 | John Myers | 30 | Head | Laborer | Iowa |
| 45 | Anna B. Myers | 30 | Wife | — | Iowa |
| 46 | Dora M. Myers | 9 | Daughter | — | Iowa |
| 47 | Delores J. Myers | 7 | Daughter | — | Iowa |
| 48 | James L. Myers | 5 | Son | — | Iowa |
| 49 | Marvin D. Myers | 2 | Son | — | Iowa |
| 50 | Howard Harvey | 22 | Head | Miner | Iowa |
| 51 | Marie M. Harvey | 23 | Wife | — | Illinois |
| 52 | Marilyn L. Harvey | 4 | Daughter | — | Iowa |
| 53 | Hellen A. Harvey | 2 | Son | — | Iowa |
| 54 | Beverly D. Harvey | 1 | Daughter | — | Iowa |
| 55 | Carolyn M. Harvey | 0 | Daughter | — | Iowa |
| 56 | Nancee Young | 65 | Head | — | Iowa |
| 57 | Sam D. Briley | 37 | Head | Laborer | Iowa |
| 58 | Beatrice M. Briley | 35 | Wife | — | Iowa |
| 59 | Irene A. Briley | 11 | Daughter | — | Iowa |
| 60 | Barry G. Briley | 9 | Son | — | Iowa |
| 61 | Charles E. Crouse | 75 | Head | Bailiff | Germany |
| 62 | Charles E. Smalley | 56 | Head | Painter & Carpenter | Iowa |
| 63 | Hattie E. Smalley | 41 | Wife | — | Nebraska |
| 64 | Ralph King THIS PERSON | 37 | Head | Laborer | Oklahoma |
| 65 | Ada R. King | 36 | Wife | — | Iowa |
| 66 | Philip E. King | 12 | Son | — | Iowa |
| 67 | Ester M. King | 11 | Daughter | — | Iowa |
| 68 | Helen J. King | 9 | Daughter | — | Iowa |
| 69 | Naomi L. King | 7 | Daughter | — | Iowa |
| 70 | Robert L. King | 5 | Son | — | Iowa |
| 71 | David E. King | 3 | Son | — | Iowa |
| 72 | Alan M. King | 2 | Son | — | Iowa |
| 73 | Paul R. King | 1 | Son | — | Iowa |
| 74 | William J. Gilliam | 52 | Head | Miner | Iowa |
| 75 | Emma Gilliam | 42 | Wife | — | Illinois |
| 76 | William Jr. Gilliam | 20 | Son | Miner | Illinois |
| 77 | Nettie Gilliam | 18 | Daughter | Housekeeper | Illinois |
| 78 | Donald Gilliam | 15 | Son | — | Illinois |
| 79 | Roland R. Gilliam | 14 | Son | — | Iowa |
| 80 | Evelyn Gilliam | 12 | Daughter | — | Illinois |
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)