MH
Mary Hopkins — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Davis-County, Iowa
Our Model Tree links this Mary Hopkins across the 1930 and 1940 US Censuses in Davis-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 10-person household.
Age 10
b. ~1930
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Davis-County, Iowa |
| Surname | Hopkins |
| Given Name | Mary Ellen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Drakesville town |
| 1935 Residence (County) | Davis County |
| Additional Details | |
| Highest Grade | Yes 4 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Drakesville Town |
| Est. Birth Year | ~1930 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Rachel Hopkins | Daughter | — | 1 | ~1939 |
| Mary Hopkins | Daughter | — | 10 | ~1930 |
| Joy Hopkins | Daughter | — | 17 | ~1923 |
| Dee Hopkins | Head | — | 54 | ~1886 |
| Junior Hopkins | Son | — | 8 | ~1932 |
| Raymond Hopkins | Son | — | 3 | ~1937 |
| James Hopkins | Son | — | 13 | ~1927 |
| Harold Hopkins | Son | — | 12 | ~1928 |
| Billy Hopkins | Son | — | 6 | ~1934 |
| Nellie Hopkins | Spouse | — | 32 | ~1908 |
Census Appearances
1930
Davis, Iowa
Daughter, age
Davis, Iowa · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hopkins |
| Given Name | Mary Ellen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Davis-County, Iowa
Daughter, age 10
Davis-County, Iowa · implied b. ~1930 — 10 household members
| Surname | Hopkins |
| Given Name | Mary Ellen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Drakesville town |
| 1935 Residence (County) | Davis County |
| Highest Grade | Yes 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 Mary Hopkins across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Hopkins
Daughter · 1940 · age 10 · b. ~1930 · Iowa
★ You are viewing this record
Sibling
James Hopkins
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Hopkins
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Junior Hopkins
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joy Hopkins
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Hopkins
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Hopkins
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rachel Hopkins
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 — Davis-County, Iowa
Open full size
1940 US Federal Census — Davis-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01154-00102)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Addie Swaim | 54 | Head | — | Iowa |
| 2 | F. Basil (As) Swaim | 23 | Son | Salesman | Iowa |
| 3 | Anna Irulan | 77 | Head | — | Ohio |
| 4 | Grace Irulan | 46 | daughter | — | Iowa |
| 5 | William Williams | 71 | Head | Carpenter | Iowa |
| 6 | Fred Williams | 43 | son | Carpenter | Iowa |
| 7 | Mary M Williams | 40 | daughter-in-law | Seamstress | Iowa |
| 8 | Andrew Ostermeyer | 84 | Head | — | Germany |
| 9 | Theresia Ostermeyer | 77 | Wife | — | Germany |
| 10 | Wilmett Scannell | 75 | Head | Proprietor | Iowa |
| 11 | Grace Scannell | 67 | Wife | Saleswoman | Iowa |
| 12 | Vaughn Anna Belle Scannell | 63 | sister-in-law | — | Iowa |
| 13 | Verne Irulan | 52 | Head | Carpenter | Iowa |
| 14 | Ora Irulan | 52 | Wife | — | Iowa |
| 15 | Ida B Davis | 66 | Head | — | Iowa |
| 16 | George Pebbles | 46 | Head | Automobile Mechanic | Iowa |
| 17 | Lora Pebbles | 45 | Wife | — | Iowa |
| 18 | Nadine Pebbles | 15 | daughter | New Worker | Iowa |
| 19 | Loran D. Pebbles | 13 | son | — | Iowa |
| 20 | Duane Pebbles | 10 | daughter | — | Iowa |
| 21 | Eugene Pebbles | 6 | son | — | Iowa |
| 22 | Nancy Pebbles | 4 | son | — | Iowa |
| 23 | Dee Hopkins | 54 | Head | W.P.A | Iowa |
| 24 | Nellie Hopkins | 32 | Wife | — | Iowa |
| 25 | Joy Hopkins | 17 | daughter | — | Iowa |
| 26 | James Hopkins | 13 | son | — | Iowa |
| 27 | Harold Hopkins | 12 | son | — | Iowa |
| 28 | Mary Ellen Hopkins THIS PERSON | 10 | daughter | — | Iowa |
| 29 | Junior Hopkins | 8 | son | — | Iowa |
| 30 | Billy Hopkins | 6 | son | — | Iowa |
| 31 | Raymond Hopkins | 3 | son | — | Iowa |
| 32 | Rachel D Hopkins | 1 | daughter | — | Iowa |
| 33 | Charlie E Sprouse | 39 | Head | Shop Foreman | Iowa |
| 34 | Ida Mae Sprouse | 38 | Wife | — | Iowa |
| 35 | D. Ray Sprouse | 18 | son | — | Iowa |
| 36 | Rex Y Sprouse | 16 | son | — | Iowa |
| 37 | Betty Sprouse | 14 | daughter | — | Iowa |
| 38 | Teddy R Sprouse | 12 | son | — | Iowa |
| 39 | Lois Z Sprouse | 10 | daughter | — | Iowa |
| 40 | Shirley J Sprouse | 6 | daughter | — | Iowa |
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)