MK
Mildred King — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Mildred King across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 10-person household.
Age 17
b. ~1923
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | King |
| Given Name | Mildred E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Waitress |
| Industry | n.y.a. |
| Class of Worker | GW |
| Hours Worked | 20 |
| Highest Grade | Hs 3 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Waitress |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1923 |
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 Mildred | Age | Birth yr |
|---|---|---|---|---|
| Rose King | Daughter | — | 2 | ~1938 |
| Shirley King | Daughter | — | 5 | ~1935 |
| Elsie King | Spouse | — | 39 | ~1901 |
| Ella King | Daughter | — | 7 | ~1933 |
| Clarence King | Son | — | 19 | ~1921 |
| Glyndora King | Daughter | — | 15 | ~1925 |
| Leon King | Other | — | 20 | ~1920 |
| Clarence King | Head | — | 49 | ~1891 |
| Mildred King | Daughter | — | 17 | ~1923 |
| Theodore King | Son | — | 3 | ~1937 |
Census Appearances
1930
Polk, Iowa
Daughter, age 7
Polk, Iowa · implied b. ~1923 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Missouri |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 17
Polk-County, Iowa · implied b. ~1923 — 10 household members
| Surname | King |
| Given Name | Mildred E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Waitress |
| Industry | n.y.a. |
| Class of Worker | GW |
| Hours Worked | 20 |
| Highest Grade | Hs 3 |
| 1935 Residence | Iowa |
| 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 Mildred King across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mildred King
Daughter · 1940 · age 17 · b. ~1923 · Iowa
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Sibling
Clarence King
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glyndora King
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella King
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley King
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore King
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose King
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-01194-00801)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred L. Marvin | 51 | Head | Railroad Engineer | Illinois |
| 2 | Maude E. Marvin | 50 | Wife | Housewife | Nebraska |
| 3 | Evelyn M. Bennett | 29 | Daughter | Clerk | Iowa |
| 4 | Jackie M. Bennett | 6 | Grandson | — | Iowa |
| 5 | Emma C. Searl | 69 | Mother-in-law | — | Illinois |
| 6 | Harry Noel | 47 | Head | Laborer | Missouri |
| 7 | Bertha Noel | 38 | Wife | Housework | Missouri |
| 8 | Charles Wolfskill | 26 | Head | Laborer | Missouri |
| 9 | Mary Wolfskill | 26 | Wife | Housework | Iowa |
| 10 | Marie Woodford | 43 | Mother | Chambermaid | Missouri |
| 11 | Curtis Jackson | 37 | Head | Laborer | Missouri |
| 12 | Maxine M. Jackson | 40 | Wife | — | Missouri |
| 13 | Sandra H. Jackson | 16 | Son | — | Iowa |
| 14 | Curtis Jr. Jackson | 13 | Son | — | Iowa |
| 15 | Lawrence Jackson | 10 | Son | — | Iowa |
| 16 | Marvin W. Jackson | 9 | Son | — | Iowa |
| 17 | Zanna L. Jackson | 3 | Daughter | — | Iowa |
| 18 | Oliver G. Mckay | 26 | Head | Porter | Kansas |
| 19 | Otha G. Mckay | 24 | Wife | — | Iowa |
| 20 | Leona J. Mckay | 5 | Daughter | — | Iowa |
| 21 | Mildred E. Mckay | 4 | Daughter | — | Iowa |
| 22 | Oliver G. Jr. Mckay | 1 | Son | — | Iowa |
| 23 | Geraldine L. Mckay | None | Daughter | — | Iowa |
| 24 | Clarence W. King | 49 | Head | Janitor | Missouri |
| 25 | Elsie E. King | 39 | Wife | — | Missouri |
| 26 | Leon King | 20 | Stepson | Dishwasher | Missouri |
| 27 | Clarence A. Jr. King | 19 | Son | Dishwasher | Iowa |
| 28 | Mildred E. King THIS PERSON | 17 | Daughter | Waitress | Iowa |
| 29 | Glyndora King | 15 | Daughter | — | Iowa |
| 30 | Ella J. King | 7 | Daughter | — | Iowa |
| 31 | Shirley A. King | 5 | Daughter | — | Iowa |
| 32 | Theodore L. King | 3 | Son | — | Iowa |
| 33 | Rose M. King | 2 | Daughter | — | Iowa |
| 34 | Thomas P. Williams | 20 | Head | Laborer | Texas |
| 35 | Lida M. Williams | 20 | Wife | — | Missouri |
| 36 | Alpha L. Williams | None | Daughter | — | Iowa |
| 37 | Ida V. Williams | 45 | Mother | Maid | Texas |
| 38 | Mamie Brewer | 57 | Lodger | — | So. Carolina |
| 39 | Edna L. Pendleton | 40 | Head | Chambermaid | Kansas |
| 40 | Katherine L. Pendleton | 24 | Daughter | Maid | Iowa |
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)