LS
Lester Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Lester Smith across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Martha & George — first a head (b.~1892), then head of a 4-person household.
Age 48
b. ~1892
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Smith |
| Given Name | Lester |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Four Mile Twp |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Farming |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farming |
| Township / Ward | Four Mile Twp |
| Est. Birth Year | ~1892 |
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 Lester | Age | Birth yr |
|---|---|---|---|---|
| Martha Smith | Daughter | — | 15 | ~1925 |
| Lester Smith | Head | — | 48 | ~1892 |
| Wilber Cole | Other | — | 19 | ~1921 |
| Gladys Smith | Spouse | — | 48 | ~1892 |
Census Appearances
1900
Polk, Iowa
Son, age 9
Polk, Iowa · implied b. ~1891 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lester F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Apr |
| Birth Year | 1891 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Occupation | At School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Polk, Iowa
Son, age 19
Polk, Iowa · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lester F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Polk, Iowa
Head, age 28
Polk, Iowa · implied b. ~1892 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lester J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Head, age 39
Polk, Iowa · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Lester J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 24 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Head, age 48
Polk-County, Iowa · implied b. ~1892 — 4 household members
| Surname | Smith |
| Given Name | Lester |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Four Mile Twp |
| 1935 Residence (County) | Polk |
| Occupation | Farming |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Lester Smith across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Martha Smith (~0.92 confidence) and father George Smith (~0.92 confidence) and father George Smith (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Martha Smith
b. ~1847
Source mother
● Household
· direct · ~0.92
Father
George Smith
b. ~1848
Source father
● Household
· direct · ~0.92
Father
George Smith
b. ~1849
Source father
● Household
· direct · ~0.92
This person
Anchor record
Lester Smith
Head · 1940 · age 48 · b. ~1892 · 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
40 people indexed on this census page (nara:1940:m-t0627-01192-00553)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | W. J. Smith | 49 | Head | Farming | Iowa |
| 2 | Dolly Smith | 50 | Wife | — | Iowa |
| 3 | Jo Ann Smith | 13 | Daughter | — | Iowa |
| 4 | Billy Smith | 16 | Son | — | Iowa |
| 5 | Willard Smith | 28 | Son | — | Iowa |
| 6 | Ray Hick | 56 | Head | Carpentering | Iowa |
| 7 | Mabel Hick | 48 | Wife | — | Ill |
| 8 | Albert Hick | 23 | Son | Gardening | Iowa |
| 9 | Norman Hick | 19 | Son | Gardening | Iowa |
| 10 | Lillian Hick | 17 | Daughter | — | Iowa |
| 11 | Dale Hick | 12 | Son | — | Iowa |
| 12 | Fern Hick | 6 | Daughter | — | Iowa |
| 13 | Jessie Hick | 2 | Daughter | — | Iowa |
| 14 | Lester Smith THIS PERSON | 48 | Head | Farming | Iowa |
| 15 | Gladys Smith | 48 | Wife | — | Iowa |
| 16 | Martha Belle Smith | 15 | Daughter | — | Iowa |
| 17 | Wilber Cole | 19 | Farmhand | Farm Hand | Iowa |
| 18 | H. W. Faulkes | 41 | Head | Theater | Iowa |
| 19 | Beatrice K. Faulkes | 42 | Wife | — | Kentucky |
| 20 | H. W. Jr. Faulkes | 20 | Son | — | Iowa |
| 21 | Robert K. Faulkes | 18 | Son | — | Iowa |
| 22 | C. W. Packer | 65 | Head | — | Iowa |
| 23 | Nellie Packer | 63 | Wife | — | Iowa |
| 24 | G. H. Wedell | 55 | Head | Carpenter | Iowa |
| 25 | Marvin Wedell | 19 | Son | — | Iowa |
| 26 | Vernon Erickson | 31 | Head | Farmhand | Iowa |
| 27 | Daisy Erickson | 29 | Wife | — | Iowa |
| 28 | Mary Lou Erickson | 5 | Daughter | — | Iowa |
| 29 | Donald Erickson | 3 | Son | — | Iowa |
| 30 | Martha Erickson | 1 | Daughter | — | Iowa |
| 31 | Amos Fulmer | 28 | Head | Truck Driver | Iowa |
| 32 | Virginia Fulmer | 24 | Wife | Hosiery Miller | Iowa |
| 33 | Ben Reeves | 40 | Head | Farm Hand | Texas |
| 34 | Ione Reeves | 34 | Wife | — | Nebraska |
| 35 | Marjorie Reeves | 5 | Daughter | — | Iowa |
| 36 | Naoma Reeves | 3 | Daughter | — | Iowa |
| 37 | Shirley Reeves | 1 | Daughter | — | Iowa |
| 38 | B. Freestone | 46 | Head | Farm Hand | Iowa |
| 39 | Hazel Freestone | 45 | Wife | — | Iowa |
| 40 | William Freestone | 7 | Son | — | Iowa |
Pedigree Summary
Lester
Gen 1 · 3 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)