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Barbara Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Barbara Davis across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Davis |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| Additional Details | |
| Highest Grade | Hs 3 |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Barbara | Age | Birth yr |
|---|---|---|---|---|
| Barbara Davis | Daughter | — | 15 | ~1925 |
| Myrtle Davis | Spouse | — | 44 | ~1896 |
| Richard Davis | Son | — | 21 | ~1919 |
| Robert Davis | Son | — | 24 | ~1916 |
| Charles Davis | Son | — | 19 | ~1921 |
| James Davis | Son | — | 7 | ~1933 |
| Robert Davis | Head | — | 45 | ~1895 |
Census Appearances
1930
Polk, Iowa
Daughter, age 4
Polk, Iowa · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 15
Polk-County, Iowa · implied b. ~1925 — 7 household members
| Surname | Davis |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| Highest Grade | Hs 3 |
| 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 Barbara Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Barbara Davis
Daughter · 1940 · age 15 · b. ~1925 · Iowa
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Sibling
Richard Davis
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Davis
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Davis
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Davis
Sibling · 1940 · age 7
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
39 people indexed on this census page (nara:1940:m-t0627-01196-00248)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | C. Robert Aitken | 21 | Son | Laborer | Iowa |
| 3 | Paul D. Aitken | 20 | Son | Lay-Out Man | Iowa |
| 4 | Helen Aitken | 3 | Daughter | — | Iowa |
| 5 | L. D. Macy | 44 | Head | Insurance Agent | Iowa |
| 6 | Ruth Maurine Macy | 42 | Wife | — | Iowa |
| 7 | Mildred Ellen Macy | 14 | Daughter | — | Iowa |
| 8 | Robert Davis | 45 | Head | Insurance Agent | Iowa |
| 9 | Myrtle Davis | 44 | Wife | — | Iowa |
| 10 | Robert Davis | 24 | Son | Maker | Iowa |
| 11 | Richard Davis | 21 | Son | Dept. Clerk | Iowa |
| 12 | Charles Davis | 19 | Son | Elevator Boy | Iowa |
| 13 | Barbara Davis THIS PERSON | 15 | Daughter | — | Iowa |
| 14 | James Davis | 7 | Son | — | Iowa |
| 15 | John G. Boyce | 44 | Head | Maintenance Man | Iowa |
| 16 | Marie C. Boyce | 36 | Wife | — | Illinois |
| 17 | Carol Marie Boyce | 6 | Daughter | — | Iowa |
| 18 | John David Boyce | 2 | Son | — | Iowa |
| 19 | Dr. Olin E. Hoffman | 41 | Head | Director | Iowa |
| 20 | Blanche Hoffman | 39 | Wife | — | Iowa |
| 21 | Dean Kay Hoffman | 16 | Son | — | Iowa |
| 22 | Byron Hoffman | 9 | Son | — | Iowa |
| 23 | Betty Rodgers | 30 | Head | Sales Work | Missouri |
| 24 | Jerry Rodgers | 9 | Son | — | Missouri |
| 25 | Truman Buck | 27 | Lodger | Sales Work | Iowa |
| 26 | Eleanor Bertsch | 27 | Servant | Housework | Iowa |
| 27 | William T. Head | 55 | Head | Collector | Iowa |
| 28 | Mabel A. Head | 43 | Wife | — | Illinois |
| 29 | Cecil B. Mills | 16 | Lodger | — | Iowa |
| 30 | Robert Head | 12 | Adopted Son | — | Iowa |
| 31 | M. L. Raymond | 32 | Head | Pastor | Minnesota |
| 32 | Helen Raymond | 31 | Wife | — | Chicago, Ill |
| 33 | Marvin Raymond | 5 | Son | — | Fargo, N. Dak. |
| 34 | Albert J. Gardner | 30 | Head | Truck Driver | Iowa |
| 35 | Wilma Gardner | 29 | Wife | — | Iowa |
| 36 | Mabel M. Carpenter | 39 | Sister-in-law | Extra Help | Iowa |
| 37 | Norma Williams | 19 | Niece | — | Iowa |
| 38 | Wilma Williams | 1 | Great-Niece | — | Iowa |
| 39 | Lawrence Bramme | 45 | Head | Truck Driver | Denmark |
| 40 | Kathryn Bramme | 48 | Wife | — | Denmark |
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)