MS
Mildred Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cass-County, Iowa
Our Model Tree links this Mildred Smith across the 1920, 1930 and 1940 US Censuses in Cass-County, Iowa (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a daughter (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cass-County, Iowa |
| Surname | Smith |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Benton Twp |
| 1935 Residence (County) | Cass |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Benton Twp |
| Est. Birth Year | ~1916 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mildred Smith | Daughter | — | 24 | ~1916 |
| Opal Smith | Daughter | — | 21 | ~1919 |
| Frank Smith | Head | — | 56 | ~1884 |
| Emma Smith | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Cass, Iowa
Daughter, age 4
Cass, Iowa · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Mildred S |
| 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 |
1930
Cass, Iowa
Daughter, age 14
Cass, Iowa · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cass-County, Iowa
Daughter, age 24
Cass-County, Iowa · implied b. ~1916 — 4 household members
| Surname | Smith |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Benton Twp |
| 1935 Residence (County) | Cass |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 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 Mildred Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Smith (~0.92 confidence) and father Frank Smith (~0.92 confidence) and mother Emma Smith (~0.92 confidence) and mother Emogene Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Smith
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Frank Smith
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Emma Smith
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Emogene Smith
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mildred Smith
Daughter · 1940 · age 24 · b. ~1916 · Iowa
★ You are viewing this record
Sibling
Opal Smith
Sibling · 1940 · age 21
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 — Cass-County, Iowa
Open full size
1940 US Federal Census — Cass-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01145-00213)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Elma D Cambridge | 74 | Wife | — | Nebraska |
| 42 | Eugene Cambridge | 15 | Son | — | Iowa |
| 43 | Victoria Richter | 40 | Head | — | Iowa |
| 44 | Isaac Griffith | 59 | Head | Farming | Iowa |
| 45 | Louie Griffith | 40 | Wife | — | Iowa |
| 46 | Harry Wedemeyer | 31 | Head | Farming | Iowa |
| 47 | Anna Wedemeyer | 27 | Wife | — | Iowa |
| 48 | Robert Wedemeyer | 1 | Son | — | Iowa |
| 49 | Fredrick Porsch | 30 | Head | Farming | Iowa |
| 50 | Hazel Porsch | 27 | Wife | — | Iowa |
| 51 | Mary Lou Porsch | 5 | Daughter | — | Iowa |
| 52 | Evaline Porsch | 4 | Daughter | — | Iowa |
| 53 | Karen Porsch | 1 | Daughter | — | Iowa |
| 54 | Floyd Smith | 58 | Head | Farming | Iowa |
| 55 | Clara Smith | 55 | Wife | — | Oregon |
| 56 | Frank L Smith | 56 | Head | Farming | Iowa |
| 57 | Emma E Smith | 49 | Wife | — | Iowa |
| 58 | Mildred Smith THIS PERSON | 24 | Daughter | — | Iowa |
| 59 | Opal Smith | 21 | Daughter | Country School Teacher | Iowa |
| 60 | Jeanette Mayer | 23 | Head | — | Iowa |
| 61 | Wayne Johnson | 14 | Brother | — | Iowa |
| 62 | Claus D Wilson | 47 | Head | Farming | Iowa |
| 63 | Bertha Wilson | 50 | Wife | — | Iowa |
| 64 | Ethylyn Wilson | 22 | Daughter | School Teaching | Iowa |
| 65 | Katherine Wilson | 20 | Daughter | School Teaching | Iowa |
| 66 | Emmet Mcdermott | 38 | Head | Farming | Iowa |
| 67 | Nora Mcdermott | 76 | Mother | — | Michigan |
| 68 | Melvin Bladt | 34 | Head | Farm | Iowa |
| 69 | Ruby @ Bladt | 25 | Wife | — | Iowa |
| 70 | John @ Nissen | 49 | Head | Farming | Minnesota |
| 71 | Mary Nissen | 41 | Wife | — | Wisconsin |
| 72 | Helen Nissen | 17 | Daughter | — | Iowa |
| 73 | Florence Nissen | 14 | Daughter | — | Iowa |
| 74 | Joseph Nissen | 13 | Son | — | Iowa |
| 75 | Delories Nissen | 6 | Daughter | — | Iowa |
| 76 | Ramona Nissen | 5 | Daughter | — | Iowa |
| 77 | Ingeman Anderson | 50 | Head | Farming | Minnesota |
| 78 | Amanda Anderson | 44 | Wife | — | Iowa |
| 79 | Reed Anderson | 14 | Son | — | Iowa |
| 80 | La Rue Anderson | 13 | Son | — | Iowa |
Pedigree Summary
Mildred + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)