WK
William King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this William King across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents William & William — first a head (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | King |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Tree scout |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 660 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Tree Scout |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1913 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Charlotte Porter | Daughter | — | 9 | ~1931 |
| William King | Head | — | 27 | ~1913 |
| Daughter Hagle | Other | — | — | |
| Marl Porter | Son | — | 11 | ~1929 |
| Margaret King | Spouse | — | 28 | ~1912 |
Census Appearances
1920
Polk, Iowa
Son, age 7
Polk, Iowa · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | William Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kansas |
| Can Read | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 17
Polk, Iowa · implied b. ~1913 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | William |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Head, age 27
Polk-County, Iowa · implied b. ~1913 — 5 household members
| Surname | King |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Tree scout |
| Industry | W.P.A. |
| Class of Worker | GW |
| Hours Worked | 2 |
| Income (1939) | 660 |
| Highest Grade | Hs 2 |
| 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 William King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William King (~0.92 confidence) and father William King (~0.92 confidence) and mother May King (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William King
b. ~1864
Source father
● Household
· direct · ~0.92
Father
William King
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
May King
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William King
Head · 1940 · age 27 · b. ~1913 · 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
39 people indexed on this census page (nara:1940:m-t0627-01196-00512)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ed. Curtis | 48 | Head | Laborer | Iowa |
| 42 | Emma Sable | 71 | Head | — | Vermont |
| 43 | George Weaver | 81 | Head | — | Kentucky |
| 44 | William King THIS PERSON | 27 | Head | Tree Scout | Iowa |
| 45 | Margaret King | 28 | Wife | — | Illinois |
| 46 | Marl Porter | 11 | Son | — | Iowa |
| 47 | Charlotte Porter | 9 | Daughter | — | Iowa |
| 48 | Daughter Hagle | None | F | — | — |
| 49 | Harry E. Hunter | 62 | Head | Laborer | Iowa |
| 50 | Mary E. Hunter | 62 | Wife | — | Iowa |
| 51 | Elmer Sylvester | 50 | Lodger | Janitor | Iowa |
| 52 | Harry L. Miller | 61 | Lodger | Farm Hand | Iowa |
| 54 | Virgil E. Cannon | 44 | Head | Pressman | Iowa |
| 55 | Eva A. Cannon | 40 | Wife | — | Missouri |
| 56 | Hagle D. Cannon | 20 | Daughter | Seamstress | Iowa |
| 57 | Odis W. Cannon | 13 | Son | — | Iowa |
| 58 | Arline E. Cannon | 9 | Daughter | — | Iowa |
| 59 | Bonnie M. Cannon | 8 | Daughter | — | Iowa |
| 60 | Larry D. Cannon | 4 | Son | — | Iowa |
| 61 | Charles M. Cannon | 22 | Head | Laborer | Iowa |
| 62 | Easter V. Cannon | 21 | Wife | — | Iowa |
| 63 | Janice M. Cannon | 0 | Daughter | — | Iowa |
| 64 | Daniel B. Webster | 63 | Head | — | Iowa |
| 65 | Mary J. Webster | 72 | Wife | — | Missouri |
| 66 | James H. Horrell | 47 | Son | Laborer | Missouri |
| 67 | Walter L. Price | 39 | Head | Steel Worker | Iowa |
| 68 | Pansy L. Price | 35 | Wife | — | Kansas |
| 69 | Virginia M. Sanger | 17 | Daughter | — | Iowa |
| 70 | Roy H. Lenz | 34 | Head | Projectionist | Iowa |
| 71 | Stella M. Lenz | 34 | Wife | — | Iowa |
| 72 | Joyce M. Lenz | 9 | Daughter | — | Iowa |
| 73 | Bert A. Landfader | 58 | Head | Janitor | Iowa |
| 74 | William F. Main | 31 | Head | Clerk | Iowa |
| 75 | Esther M. Main | 34 | Wife | — | Iowa |
| 76 | Ada Harder | 50 | Head | Housework | Iowa |
| 77 | Marlin W. Harder | 24 | Son | Laborer | Iowa |
| 78 | Ellis R. Harder | 17 | Son | — | Iowa |
| 79 | Lena Davis | 48 | Head | Folder | Iowa |
| 80 | Louis Levey | 81 | Father | — | Poland |
Related Census Records
Pedigree Summary
William
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)