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Joan Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this Joan Smith across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 5-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Smith |
| Given Name | Joan |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Pott |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Council Bluffs 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joan | Age | Birth yr |
|---|---|---|---|---|
| Dale Smith | Head | — | 40 | ~1900 |
| Ethel Smith | Spouse | — | 42 | ~1898 |
| Joan Smith | Daughter | — | 15 | ~1925 |
| Shirley Smith | Daughter | — | 13 | ~1927 |
| Gordon Smith | Son | — | 7 | ~1933 |
Census Appearances
1930
Pottawattamie, Iowa
Daughter, age 4
Pottawattamie, Iowa · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Joan |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Nebraska |
| Mother's Birthplace | Minnesota |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Daughter, age 15
Pottawattamie-County, Iowa · implied b. ~1925 — 5 household members
| Surname | Smith |
| Given Name | Joan |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Council Bluffs City |
| 1935 Residence (County) | Pott |
| Industry | 0 |
| Highest Grade | H 2 |
| 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 Joan Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joan Smith
Daughter · 1940 · age 15 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Shirley Smith
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Smith
Sibling · 1940 · age 7
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-t0627-01198-00647)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Will Haggerty | 47 | Head | Salesman | Illinois |
| 2 | Allen Mary Haggerty | 44 | Housekeeper | Housekeeper | Iowa |
| 3 | Allen Robert Haggerty | 14 | Lodger | — | Iowa |
| 4 | Allen Mary Katherine Haggerty | 11 | Lodger | — | Nebraska |
| 5 | Allen Theodore Haggerty | 8 | Lodger | — | Nebraska |
| 6 | Leslie Jacobs | 26 | Head | Clerk | Iowa |
| 7 | Marguerite Jacobs | 23 | Wife | — | Michigan |
| 8 | Duane Jacobs | 4 | Son | — | Iowa |
| 9 | Janice Jacobs | 2 | Daughter | — | Iowa |
| 10 | Dannie Jacobs | 1 | Son | — | Iowa |
| 11 | Neil Spence | 35 | Head | Welder | Iowa |
| 12 | Edna Spence | 36 | Wife | — | Iowa |
| 13 | Orlo Spence | 8 | Son | — | Iowa |
| 14 | Jack Spence | 3 | Son | — | Iowa |
| 15 | Edward C Pender | 33 | Head | Trucker | Iowa |
| 16 | Gladys Pender | 32 | Wife | — | Iowa |
| 17 | Edward Pender | 6 | Son | — | Iowa |
| 18 | Marylin Pender | 4 | Daughter | — | Iowa |
| 19 | Carol Ann Pender | 1 | Daughter | — | Iowa |
| 20 | Elmer Schindur | Schinder | 37 | Head | Pipe Fitter | Iowa |
| 21 | Nellie Schindur | Schinder | 32 | Wife | — | Illinois |
| 22 | Russell Reddin | 31 | Head | Senior Clerk | Illinois |
| 23 | Ester Reddin | 22 | Wife | — | Iowa |
| 24 | Edwin Hubbard | 48 | Head | Cashier | Iowa |
| 25 | Opal Hubbard | 43 | Wife | — | Iowa |
| 26 | Charlotte Hubbard | 15 | Daughter | — | Iowa |
| 27 | Dale J. Smith | 40 | Head | Clerk | Iowa |
| 28 | Ethel Smith | 42 | Wife | — | Iowa |
| 29 | Joan Smith THIS PERSON | 15 | Daughter | — | Iowa |
| 30 | Shirley Smith | 13 | Daughter | — | Iowa |
| 31 | Gordon Smith | 7 | Son | — | Iowa |
| 32 | Frank Messmore | 37 | Head | Electrician | Iowa |
| 33 | Nellie Messmore | 34 | Wife | — | Iowa |
| 34 | Frank G. Jr Messmore | 17 | Son | — | Iowa |
| 35 | Virginia Messmore | 12 | Daughter | — | Iowa |
| 36 | Joseph E Mcbride | 49 | Head | Brakeman | Iowa |
| 37 | Emma M Mcbride | 53 | Wife | — | Iowa |
| 38 | Earl James Mcbride | 19 | Son | Office Clerk | Iowa |
| 39 | Edward Jensen | 32 | Head | Welding | Iowa |
| 40 | Ruth Jensen | 28 | Wife | — | 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)