FS
Francis Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Francis Smith across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Henry & Lyna — first a head (b.~1916), then head of a 3-person household.
Age 24
b. ~1916
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Smith |
| Given Name | Francis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Wichita |
| 1935 Residence (County) | Sedgwick |
| Additional Details | |
| Occupation | Custodian |
| Industry | Office Building |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 720 |
| Highest Grade | H 5 |
| 1935 Residence | Kansas |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Custodian |
| Township / Ward | Des Moines |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Francis | Age | Birth yr |
|---|---|---|---|---|
| Francis Smith | Head | — | 24 | ~1916 |
| Carl Smith | Son | — | 1 | ~1939 |
| Marguerite Smith | Spouse | — | 18 | ~1922 |
Census Appearances
Son, age 2
Polk, Iowa · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Frances |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 13
Polk, Iowa · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Head, age 24
Polk-County, Iowa · implied b. ~1916 — 3 household members
| Surname | Smith |
| Given Name | Francis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Wichita |
| 1935 Residence (County) | Sedgwick |
| Occupation | Custodian |
| Industry | Office Building |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 720 |
| Highest Grade | H 5 |
| 1935 Residence | Kansas |
| 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 Francis Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Smith (~0.92 confidence) and mother Lyna Smith (~0.92 confidence) and father Charles Smith (~0.92 confidence) and mother Fern Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Smith
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Lyna Smith
b. ~1882
Source mother
● Household
· direct · ~0.92
Father
Charles Smith
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Fern Smith
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Francis Smith
Head · 1940 · age 24 · b. ~1916 · Iowa
★ You are viewing this record
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
33 people indexed on this census page (nara:1940:m-t0627-01194-00866)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Albert Asher | 44 | Head | Custodian | Iowa |
| 42 | Nellie Asher | 56 | Wife | — | Iowa |
| 47 | W. M. Mcnabb | 69 | Head | — | Iowa |
| 48 | Mary Mcnabb | 75 | Wife | — | New York |
| 49 | Ruth Huss | 16 | Daughter | — | Iowa |
| 50 | Alexander Calvert | 59 | Head | Miner | Missouri |
| 51 | Ann Scott | 55 | Lodger | On Relief | Iowa |
| 52 | Ethel Stevens | 45 | Head | Binder | Iowa |
| 53 | Francis Smith THIS PERSON | 24 | Head | Custodian | Iowa |
| 54 | Marguerite Smith | 18 | Wife | — | Kansas |
| 55 | Carl Smith | 1 | Son | — | Kansas |
| 59 | J. J. Madigan | 70 | Head | Manufacturer | Wisconsin |
| 60 | Gladys Madigan | 60 | Wife | — | Iowa |
| 61 | C. W. Reid | 42 | Head | Clerk | Iowa |
| 62 | Katharina Reid | 39 | Wife | — | Iowa |
| 63 | William John Reid | 14 | Son | — | Iowa |
| 64 | Robert Merle Reid | 11 | Son | — | Iowa |
| 65 | Brol. M. Reid | 4 | Daughter | — | Iowa |
| 66 | Fern L. Reid | 39 | Sister | Secretary | Iowa |
| 67 | Mildred Murphy | 25 | Head | Assist. Librarian | Iowa |
| 68 | Minnie Murphy | 52 | Mother | — | Illinois |
| 69 | Elsie Kohrs | 85 | Mother-in-law | Pianist | Illinois |
| 70 | Mary Sultman | 66 | Head | Stenographer | Iowa |
| 71 | Violet Sultman | 35 | Daughter | — | Iowa |
| 72 | Virgil Engle | 35 | Head | Salesman | Iowa |
| 73 | Florence Engle | 34 | Wife | — | Iowa |
| 74 | Alyce Engle | 11 | Daughter | — | Iowa |
| 75 | Joanne Engle | 7 | Daughter | — | Iowa |
| 76 | Glenn Kern | 45 | Head | Watchman | Iowa |
| 77 | Betty Kern | 34 | Wife | — | Iowa |
| 78 | Dixie Lee Kern | 14 | Daughter | — | Iowa |
| 79 | Allen Coulter | 19 | Head | Laborer | Iowa |
| 80 | Margaret Coulter | 20 | Wife | — | Iowa |
Related Census Records
Pedigree Summary
Francis
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)