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Betty Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this Betty Smith across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Smith |
| Given Name | Betty May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Co. Bluffs |
| 1935 Residence (County) | Pott. |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Boomer Twp |
| Est. Birth Year | ~1926 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Betty | Age | Birth yr |
|---|---|---|---|---|
| Betty Smith | Daughter | — | 14 | ~1926 |
| Rosalia Williamson | Daughter | — | 15 | ~1925 |
| Otto Williamson | Head | — | 52 | ~1888 |
| Maurice Smith | Son | — | 10 | ~1930 |
| Tom Williamson | Son | — | 12 | ~1928 |
| Bennie Smith | Son | — | 6 | ~1934 |
| Raymond Smith | Son | — | 18 | ~1922 |
| Pearl Williamson | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Pottawattamie, Iowa
Daughter, age 4
Pottawattamie, Iowa · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Betty M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | New Hampshire |
| Mother's Birthplace | Missouri |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Daughter, age 14
Pottawattamie-County, Iowa · implied b. ~1926 — 8 household members
| Surname | Smith |
| Given Name | Betty May |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Co. Bluffs |
| 1935 Residence (County) | Pott. |
| Highest Grade | No 7 |
| 1935 Residence | Iowa |
| 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 Betty Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Betty Smith
Daughter · 1940 · age 14 · b. ~1926 · Iowa
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Sibling
Maurice Smith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Tom Williamson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bennie Smith
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosalia Williamson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Smith
Sibling · 1940 · age 18
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 — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01198-00056)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 43 | William L Hadfield | 35 | Head | Farmer | Iowa |
| 44 | Helen M Hadfield | 29 | Wife | — | Iowa |
| 45 | Yvonne N Hadfield | 9 | Daughter | — | Iowa |
| 46 | Norma A Hadfield | 7 | Daughter | — | Iowa |
| 47 | Otto R Williamson | 52 | Head | Farmer | Iowa |
| 48 | Pearl O Williamson | 39 | Wife | — | Missouri |
| 49 | Rosalia Williamson | 15 | Daughter | — | Iowa |
| 50 | Tom R Williamson | 12 | Son | — | Iowa |
| 51 | Raymond J Smith | 18 | Son | Labor | Iowa |
| 52 | Betty May Smith THIS PERSON | 14 | Daughter | — | Iowa |
| 53 | Maurice J Smith | 10 | Son | — | Iowa |
| 54 | Bennie R Smith | 6 | Son | — | Iowa |
| 55 | Albert E Page | 70 | Head | Retired Farmer | Iowa |
| 56 | Emma M Page | 44 | Daughter | — | Iowa |
| 57 | Donald L Chapman | 32 | Son | Farmer | Iowa |
| 58 | Chas J Chapman | 52 | Head | Farmer | Iowa |
| 59 | Clara H Chapman | 46 | Wife | — | Nebr |
| 60 | Rosella M Chapman | 19 | Daughter | — | Iowa |
| 61 | Marjorie Carol Chapman | 11 | Daughter | — | Iowa |
| 62 | Lee Robert Chapman | 8 | Son | — | Iowa |
| 63 | Thelma Jean Chapman | 5 | Daughter | — | Iowa |
| 64 | Fred C Grossman | 51 | Head | Farmer | Iowa |
| 65 | Emma V Grossman | 52 | Wife | — | Iowa |
| 66 | Harley N Grossman | 22 | Son | Labor | Iowa |
| 67 | Eloyse E Grossman | 20 | Daughter | Book Keeper | Iowa |
| 68 | Norman B Grossman | 17 | Son | — | Iowa |
| 69 | Frank Thomas | 35 | Head | Farmer | Iowa |
| 70 | Esther Thomas | 30 | Wife | — | Iowa |
| 71 | Spencer B Attell | 57 | Head | Farmer | Iowa |
| 72 | Blanch Mermeen | 60 | Servant | House Work | Ill |
| 73 | Lewis Peters | 72 | Head | Retired Farmer | Iowa |
| 74 | Ida P Peters | 71 | Wife | — | Iowa |
| 75 | Don L Peters | 38 | Son | Farmer | Iowa |
| 76 | John R Bennett | 48 | Head | Farmer | Iowa |
| 77 | Nellie V Bennett | 46 | Wife | — | Ill |
| 78 | Donald T Bennett | 19 | Son | Farmer | Iowa |
| 79 | Emmett R Bennett | 16 | Son | Farmer | Iowa |
| 80 | Chas C Schroder | 41 | Head | Farmer | 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)