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Joyce Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Joyce Smith across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 5-person household.
Age 14
b. ~1926
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Smith |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joyce | Age | Birth yr |
|---|---|---|---|---|
| Marshall Smith | Head | — | 37 | ~1903 |
| Rodney Smith | Son | — | 13 | ~1927 |
| Wendell Smith | Son | — | 16 | ~1924 |
| Joyce Smith | Daughter | — | 14 | ~1926 |
| Lucille Smith | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Polk, Iowa
Daughter, age 4
Polk, Iowa · implied b. ~1926 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| 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 14
Polk-County, Iowa · implied b. ~1926 — 5 household members
| Surname | Smith |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Highest Grade | H-2 |
| 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 Joyce Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joyce Smith
Daughter · 1940 · age 14 · b. ~1926 · Iowa
★ You are viewing this record
Sibling
Wendell Smith
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rodney Smith
Sibling · 1940 · age 13
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-t0627-01196-00706)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Matthew Hillman | 62 | Head | Janitor | Missouri |
| 2 | Eliza Hillman | 66 | Wife | — | Missouri |
| 3 | Lowell W. Hillman | 32 | Son | — | Iowa |
| 4 | Dorothy G. Hillman | 29 | Daughter | Maid | Iowa |
| 5 | Delphia E. Hillman | 26 | Daughter | Maid | Iowa |
| 6 | John Reece Quinn | 0 | Infant | — | Iowa |
| 7 | Charles Bryant | 40 | Head | Skilled Laborer | Iowa |
| 8 | Marie Bryant | 37 | Wife | — | Texas |
| 9 | Anna Wellingham | 54 | Head | Maid | Iowa |
| 10 | Emery Green | 44 | Brother | Pruner | Iowa |
| 11 | Emery Wade | 27 | Head | Elevator Operator | Iowa |
| 12 | Grace Wade | 26 | Wife | — | Tennessee |
| 13 | Dora Agan | 60 | Mother-in-law | — | Tennessee |
| 14 | Rosa L. Johnson | 54 | Head | — | Missouri |
| 15 | Stanley Johnson | 32 | Son | Laborer | Iowa |
| 16 | Drucilla Johnson | 27 | Daughter-in-law | — | Iowa |
| 17 | Waynard Johnson | 10 | Grand-son | — | Iowa |
| 18 | Alonzo Harris | 36 | Head | Laborer | Missouri |
| 19 | Gertrude Harris | 36 | Wife | — | Missouri |
| 20 | Edward Harris | 15 | Son | — | Iowa |
| 21 | James Harris | 13 | Son | — | Iowa |
| 22 | Lutie Harris | 12 | Daughter | — | Iowa |
| 23 | Delores Harris | 10 | Daughter | — | Iowa |
| 24 | Patricia Harris | 8 | Daughter | — | Iowa |
| 25 | Nancy Harris | 1 | Daughter | — | Iowa |
| 26 | A. Braddock | 42 | Head | Elevator Operator | Missouri |
| 27 | Grace Braddock | 42 | Wife | — | West Virginia |
| 28 | Enola Braddock | 30 | Daughter | Dress Maker | Iowa |
| 29 | Hazel Braddock | 19 | Daughter | — | Iowa |
| 30 | Marshall Smith | 37 | Head | Butcher | Iowa |
| 31 | Lucille Smith | 37 | Wife | — | Iowa |
| 32 | Wendell Smith | 16 | Son | New Worker | Iowa |
| 33 | Joyce Smith THIS PERSON | 14 | Daughter | — | Iowa |
| 34 | Rodney Smith | 13 | Son | — | Iowa |
| 35 | Waverly Edgington | 36 | Head | — | Iowa |
| 36 | Carol Crumb | 35 | Head | Porter | Texas |
| 37 | Catherine Crumb | 26 | Wife | — | Iowa |
| 38 | Carol Crumb | 9 | Daughter | — | Iowa |
| 39 | Gertrude Crumb | 8 | Daughter | — | Iowa |
| 40 | Minnie Crumb | 6 | Daughter | — | 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)