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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.~1929), then head of a 8-person household.
Age 11
b. ~1929
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Smith |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Pottawattamie |
| Additional Details | |
| Highest Grade | H 5 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Council Bluffs City |
| Est. Birth Year | ~1929 |
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 |
|---|---|---|---|---|
| Viola Smith | Daughter | — | 9 | ~1931 |
| Rose Smith | Daughter | — | 14 | ~1926 |
| Margaret Smith | Daughter | — | 7 | ~1933 |
| Betty Smith | Daughter | — | 11 | ~1929 |
| Carl Smith | Head | — | 31 | ~1909 |
| James Smith | Son | — | 12 | ~1928 |
| Billy Smith | Son | — | 6 | ~1934 |
| Lena Smith | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Pottawattamie, Iowa
Daughter, age 1
Pottawattamie, Iowa · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Betty J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Daughter, age 11
Pottawattamie-County, Iowa · implied b. ~1929 — 8 household members
| Surname | Smith |
| Given Name | Betty |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Pottawattamie |
| Highest Grade | H 5 |
| 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 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Rose Smith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Smith
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Smith
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Viola Smith
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Smith
Sibling · 1940 · age 12
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
40 people indexed on this census page (nara:1940:m-t0627-01198-00870)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Grace Clark | 15 | Daughter | Stenographer | Minnesota |
| 42 | Earl Clark | 30 | Head | Laborer | Nebraska |
| 43 | Dora Clark | 29 | Wife | — | Iowa |
| 44 | Clara Clark | 11 | Daughter | — | Iowa |
| 45 | Edna Clark | 8 | Daughter | — | Iowa |
| 46 | Walter Clark | 6 | Son | — | Iowa |
| 47 | Patricia Clark | 4 | Daughter | — | Iowa |
| 48 | Joyce Clark | 3 | Daughter | — | Iowa |
| 49 | James Mcdaniel | 19 | Lodger | Laborer | Iowa |
| 50 | Gustav Kraft | 45 | Head | Laborer | Iowa |
| 51 | Mary Mcvay | 89 | Lodger | — | England |
| 52 | L. B. Eggleston | 74 | Lodger | — | Iowa |
| 53 | Signe Peterson | 83 | Head | — | Denmark |
| 54 | Fred Peterson | 62 | Son | Car-Inspector | Denmark |
| 55 | Laura O'Brien | 51 | Niece | Practical Nurse | Iowa |
| 56 | Jennie Thomas | 47 | Head | — | Missouri |
| 57 | Joseph Thomas | 9 | Son | — | Iowa |
| 58 | Harry Nelson | 48 | Lodger | Housepainter | California |
| 59 | Hila Taylor | 58 | Head | Laborer | Nebraska |
| 60 | Minnie Taylor | 32 | Wife | — | Texas |
| 61 | Charles Newman | 84 | Head | — | Indiana |
| 62 | Nancy Newman | 47 | Daughter | Clerk | Iowa |
| 63 | Annie Cracker | 65 | Lodger | Housekeeper | Iowa |
| 64 | Carl F. Smith | 31 | Head | Flagman | Iowa |
| 65 | Lena Smith | 34 | Wife | — | Iowa |
| 66 | Rose Smith | 14 | Daughter | — | Iowa |
| 67 | James Smith | 12 | Son | — | Iowa |
| 68 | Betty Smith THIS PERSON | 11 | Daughter | — | Iowa |
| 69 | Viola Smith | 9 | Daughter | — | Iowa |
| 70 | Margaret Smith | 7 | Daughter | — | Iowa |
| 71 | Billy Smith | 6 | Son | — | Iowa |
| 72 | Mary Mcfarley | 80 | Head | — | Pennsylvania |
| 73 | James Mcfarley | 68 | Brother | — | Pennsylvania |
| 74 | David Mcfarley | 63 | Brother | — | Iowa |
| 75 | Henry Schmidt | 41 | Head | Elevator Operator | Kansas |
| 76 | Edith Schmidt | 37 | Wife | — | Iowa |
| 77 | John Maland | 45 | Head | Laborer | Missouri |
| 78 | Frances Maland | 44 | Wife | — | Missouri |
| 79 | Amos Bigley | 55 | Head | Laborer | Iowa |
| 80 | Martha Bigley | 71 | Wife | — | Pennsylvania |
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)