DC
Dorothy Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Dorothy Clark across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents William & Earnest — first a daughter (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Clark |
| Given Name | Dorothy M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Bill Machine Op |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Bill Machine Op |
| Township / Ward | Des Moines |
| Est. Birth Year | ~1911 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Louise Clark | Daughter | — | 22 | ~1918 |
| Maxine Clark | Daughter | — | 17 | ~1923 |
| Helen Clark | Daughter | — | 20 | ~1920 |
| Dorothy Clark | Daughter | — | 29 | ~1911 |
| Garner Clark | Head | — | 49 | ~1891 |
| Frances Clark | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Polk, Iowa
Daughter, age 9
Polk, Iowa · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 19
Polk, Iowa · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Dorothy G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Keeper |
| Industry | Hosiery Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 29
Polk-County, Iowa · implied b. ~1911 — 6 household members
| Surname | Clark |
| Given Name | Dorothy M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines |
| 1935 Residence (County) | Polk |
| Occupation | Bill Machine Op |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | H-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 Dorothy Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Clark (~0.92 confidence) and father Earnest Clark (~0.92 confidence) and mother Elsie Clark (~0.92 confidence) and mother Francis Clark (~0.92 confidence) and father Garner Clark (~0.92 confidence) and mother Frances Clark (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Clark
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Earnest Clark
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Elsie Clark
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Francis Clark
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Garner Clark
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Frances Clark
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Clark
Daughter · 1940 · age 29 · b. ~1911 · Iowa
★ You are viewing this record
Sibling
Helen Clark
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maxine Clark
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Clark
Sibling · 1940 · age 22
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-t0627-01195-00592)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rebecca Darnall | 60 | Wife | — | Iowa |
| 2 | Armia Bell | 50 | Head | Private Sec | Kansas |
| 3 | Carmen G Bell | 25 | Daughter | Laborer | Iowa |
| 4 | James C Bell | 21 | Son | County Mgr | Iowa |
| 5 | Gordon Bell | 18 | Son | Truck Driver | Iowa |
| 6 | Irvin William | 28 | Head | — | Iowa |
| 7 | Wilhelmina William | 22 | Wife | — | Iowa |
| 8 | Stephen William | 2 | Son | — | Iowa |
| 9 | Elizabeth Marshall | 65 | Head | Cable Ins | Iowa |
| 10 | Frank D Marshall | 28 | Son | Collector | Iowa |
| 11 | Lena Jones | 40 | Head | — | Mo |
| 12 | Donald Jones | 19 | Son | Laborer | Iowa |
| 13 | Pauline Jones | 18 | Daughter-in-law | — | Mass |
| 14 | Raymond Jones | 1 | Grandson | — | Iowa |
| 15 | Martha Burr | 43 | Head | — | Iowa |
| 16 | Robert Burr | 21 | Son | — | Iowa |
| 17 | Wm Burr | 19 | Son | Laborer | Iowa |
| 18 | Dorothy Burr | 17 | Daughter | — | Iowa |
| 19 | Donald Burr | 14 | Son | — | Iowa |
| 20 | Richard Burr | 12 | Son | — | Iowa |
| 21 | Jimmy Burr | 9 | Son | — | Iowa |
| 22 | Alice G Donald | 45 | Head | Electric Ironer | Iowa |
| 23 | Max Donald | 21 | Son | — | Iowa |
| 24 | Milton Donald | 20 | Son | — | Iowa |
| 25 | John Donald | 18 | Son | — | Iowa |
| 26 | Bettie Donald | 16 | Daughter | — | Iowa |
| 27 | Thomas Donald | 13 | Son | — | Iowa |
| 28 | Wm A Harris | 20 | Head | Taxi Driver | Iowa |
| 29 | Lois Harris | 20 | Wife | — | Iowa |
| 30 | Robert Harris | None | Son | — | Iowa |
| 31 | Garner Clark | 49 | Head | Trucking | Iowa |
| 32 | Frances Clark | 44 | Wife | Trucking | Iowa |
| 33 | Dorothy M Clark THIS PERSON | 29 | Daughter | Bill Machine Op | Iowa |
| 34 | Louise Clark | 22 | Daughter | Bill Machine Op | Iowa |
| 35 | Helen Clark | 20 | Daughter | Saleswoman | Iowa |
| 36 | Maxine Clark | 17 | Daughter | Private Sec | Iowa |
| 37 | Anna Graham | 70 | Head | — | Iowa |
| 38 | Arthur Graham | 42 | Son | — | Iowa |
| 39 | Laura Graham | 32 | Daughter-in-law | — | Mo |
| 40 | Marion Graham | 7 | Granddaughter | — | Iowa |
Pedigree Summary
Dorothy + 3 siblings
Gen 1 · 6 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)