MH
Mary Hoover — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Mary Hoover across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Hoover |
| Given Name | Mary Louise |
| 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 | |
| Highest Grade | Hs 1 |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Andrew Hoover | Son | — | 9 | ~1931 |
| Helen Hoover | Spouse | — | 34 | ~1906 |
| Nana Hoover | Daughter | — | 13 | ~1927 |
| Larry Hoover | Son | — | 1 | ~1939 |
| Andrew Hoover | Head | — | 39 | ~1901 |
| Mary Hoover | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Polk, Iowa
Daughter, age 5
Polk, Iowa · implied b. ~1925 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoover |
| Given Name | Mary L |
| 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 — 6 household members
| Surname | Hoover |
| Given Name | Mary Louise |
| 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 |
| Highest Grade | Hs 1 |
| 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 Mary Hoover across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hoover
Daughter · 1940 · age 15 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Nana Hoover
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Andrew Hoover
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Larry Hoover
Sibling · 1940 · age 1
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-t0627-01195-00739)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward R. Biggs | 34 | Head | Warehouseman | Iowa |
| 42 | Bernice Biggs | 34 | Wife | — | Iowa |
| 43 | Nanna Ogg | 7 | Daughter | — | Iowa |
| 44 | Edith Thomas | 60 | Head | Seamstress | Missouri |
| 45 | Everett Morris | 19 | Son | Odd Jobs | Iowa |
| 46 | W. Wragg | 40 | Head | — | Iowa |
| 47 | Maude Wragg | 40 | Wife | Seamstress | Iowa |
| 48 | Andrew Hoover | 39 | Head | Painter | Iowa |
| 49 | Helen Hoover | 34 | Wife | — | Iowa |
| 50 | Mary Louise Hoover THIS PERSON | 15 | Daughter | — | Iowa |
| 51 | Nana Jean Hoover | 13 | Daughter | — | Iowa |
| 52 | Andrew Hoover | 9 | Son | — | Iowa |
| 53 | Larry Hoover | 1 | Son | — | Iowa |
| 54 | Mary A. Hoover | 74 | Head | — | Illinois |
| 55 | Arenell Hoover | 42 | Daughter | — | Iowa |
| 56 | Dorothy A. Hoover | 36 | Daughter | Odd Jobs | Iowa |
| 57 | Fred Dhabalt | 23 | Head | Laborer | Minn. |
| 58 | Lillian Dhabalt | 22 | Wife | — | Iowa |
| 59 | Colleen Dhabalt | 3 | Daughter | — | Iowa |
| 60 | Beverly Dhabalt | 2 | Daughter | — | Iowa |
| 61 | Georgia Barron | 48 | Head | — | Iowa |
| 62 | Frank Barron | 19 | Son | Odd Jobs | Iowa |
| 63 | Jack Barron | 15 | Son | — | Iowa |
| 64 | Dolores Barron | 13 | Daughter | — | Iowa |
| 65 | Lloyd Consolver | 24 | Head | Roofing-Labor | Iowa |
| 66 | Elsie Consolver | 19 | Wife | — | Minn. |
| 67 | Janet M. Consolver | 1 | Daughter | — | Iowa |
| 68 | Frank Countryman | 51 | Father-in-law | Plasterer | Iowa |
| 69 | Orie Leclair | 22 | Head | Finisher | Iowa |
| 70 | Lloyd Graham | 24 | Brother-in-law | Laborer | Iowa |
| 71 | Mary Graham | 24 | Sister | — | Iowa |
| 72 | Edward Leclair | 29 | Brother | Laborer | Iowa |
| 73 | Harold Burton | 28 | Head | Baker | Iowa |
| 74 | Laneta Burton | 28 | Wife | — | Iowa |
| 75 | Richard H. Burton | 8 | Son | — | Iowa |
| 76 | Darlene L. Burton | 5 | Daughter | — | Iowa |
| 77 | Dolores E. Burton | 4 | Daughter | — | Iowa |
| 78 | Phyllis Boal | 19 | Sister-in-law | Helper | Iowa |
| 79 | Lillian Floyd | 55 | Mother-in-law | Dish Washer | Iowa |
| 80 | Laverne Floyd | 21 | Brother-in-law | Laborer | 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)