MD
Margaret Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Margaret Davis across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 12-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 | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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.
12 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Donna Davis | Daughter | — | 7 | ~1933 |
| Mary Davis | Daughter | — | 6 | ~1934 |
| Katherine Davis | Daughter | — | 9 | ~1931 |
| Margaret Davis | Daughter | — | 15 | ~1925 |
| Betty Davis | Daughter | — | 2 | ~1938 |
| Geo Davis | Head | — | 47 | ~1893 |
| Francis Davis | Son | — | 11 | ~1929 |
| Billy Davis | Son | — | ~1940 | |
| Thos Davis | Son | — | 5 | ~1935 |
| Luel Davis | Son | — | 18 | ~1922 |
| Paul Davis | Son | — | 19 | ~1921 |
| Pauline Davis | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Polk, Iowa
Daughter, age 5
Polk, Iowa · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| 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 — 12 household members
| Surname | Davis |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Margaret Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Margaret Davis
Daughter · 1940 · age 15 · b. ~1925 · Iowa
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Sibling
Billy Davis
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Davis
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Davis
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Luel Davis
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Davis
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Davis
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donna Davis
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Davis
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thos Davis
Sibling · 1940 · age 5
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
38 people indexed on this census page (nara:1940:m-t0627-01195-00449)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Geo Davis | 47 | Head | Npa | Iowa |
| 42 | Pauline Davis | 42 | Wife | — | Iowa |
| 43 | Paul Davis | 19 | Son | Nya | Iowa |
| 44 | Luel Davis | 18 | Son | — | Iowa |
| 45 | Margaret Davis THIS PERSON | 15 | Daughter | — | Iowa |
| 46 | Francis Davis | 11 | Son | — | Iowa |
| 47 | Katherine Davis | 9 | Daughter | — | Iowa |
| 48 | Donna Lee Davis | 7 | Daughter | — | Iowa |
| 49 | Mary Lou Davis | 6 | Daughter | — | Iowa |
| 50 | Thos Davis | 5 | Son | — | Iowa |
| 51 | Betty Jean Davis | 2 | Daughter | — | Iowa |
| 52 | Billy Davis | 0 | Son | — | Iowa |
| 53 | Sam Jordan | 52 | Head | Cement Factory | Miss |
| 54 | Leona Jordan | 44 | Wife | — | Iowa |
| 55 | Irece Carter | 36 | Sister | Maid | Iowa |
| 56 | Edna Decker | 64 | Head | — | Ark |
| 57 | Frank Dunn | 30 | Lodger | Porter | Iowa |
| 58 | Dave Parker | 30 | Lodger | Porter | Iowa |
| 59 | Violet Richardson | 41 | Head | — | Okla |
| 60 | Alvin Richardson | 17 | Son | Ccc | Iowa |
| 61 | Albert Richardson | 15 | Son | — | Iowa |
| 62 | Earl Richardson | 9 | Son | — | Iowa |
| 63 | Winifred Richardson | 13 | Daughter | — | Iowa |
| 64 | Anna Claland | 55 | Head | — | Iowa |
| 65 | John A Campbell | 31 | Lodger | Cleaning | Iowa |
| 66 | Alpha Campbell | 33 | Wife | — | Minn |
| 67 | John A Jr Campbell | 9 | Son | — | Iowa |
| 68 | Jas Campbell | 7 | Son | — | Iowa |
| 69 | Richard Campbell | 5 | Son | — | Iowa |
| 70 | Joseph Campbell | 2 | Son | — | Iowa |
| 71 | Geo F Thomas | 27 | Head | Painter | Mo |
| 72 | Ozelyne Thomas | 22 | Wife | — | Mo |
| 73 | H P Wallace | 26 | Head | Porter | Tenn |
| 74 | Dorothy Wallace | 25 | Wife | — | Mo |
| 75 | Janice Wallace | 7 | Daughter | — | Iowa |
| 76 | Herman Wallace | 5 | Son | — | Iowa |
| 77 | Thos E Wallace | 2 | Son | — | Iowa |
| 78 | Nathaniel Gilbert | 45 | Lodger | Rr Empo | Tenn |
Related Census Records
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)