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Charles Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this Charles Clark across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a son (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Clark |
| Given Name | Charles L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Le Claire |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Le Claire |
| Est. Birth Year | ~1920 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| Betty Clark | Daughter | — | 8 | ~1932 |
| Ruth Clark | Daughter | — | 15 | ~1925 |
| Vivian Clark | Daughter | — | 6 | ~1934 |
| Charles Clark | Head | — | 46 | ~1894 |
| Fredric Clark | Son | — | 18 | ~1922 |
| Charles Clark | Son | — | 20 | ~1920 |
| Lucile Clark | Spouse | — | 49 | ~1891 |
Census Appearances
1920
Scott, Iowa
Other, age
Scott, Iowa · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Charles L |
| Relationship to Head | Grand Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Scott, Iowa
Son, age 10
Scott, Iowa · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Charles L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Scott-County, Iowa
Son, age 20
Scott-County, Iowa · implied b. ~1920 — 7 household members
| Surname | Clark |
| Given Name | Charles L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Le Claire |
| 1935 Residence (County) | Scott |
| Highest Grade | C 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 Charles Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Clark (~0.92 confidence) and father Charles Clark (~0.92 confidence) and father Charles Clark (~0.83 confidence) and mother Elnora Clark (~0.83 confidence) and mother Lucile Clark (~0.92 confidence) and mother Lucile Clark (~0.92 confidence) and father Charles Clark (~0.83 confidence) and mother Elnora Clark (~0.83 confidence). The pedigree spans 2 generations with 8 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Father
Charles Clark
b. ~1894
Source father
● Household
· direct · ~0.92
Father
Charles Clark
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Charles Clark
b. ~1862
Source father>father
● Household
· direct · ~0.83
Mother
Elnora Clark
b. ~1865
Source father>mother
● Household
· direct · ~0.83
Mother
Lucile Clark
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Lucile Clark
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Charles Clark
b. ~1862
Source mother>father
● Household
· direct · ~0.83
Mother
Elnora Clark
b. ~1865
Source mother>mother
● Household
· direct · ~0.83
This person
Anchor record
Charles Clark
Son · 1940 · age 20 · b. ~1920 · Iowa
★ You are viewing this record
Sibling
Fredric Clark
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vivian Clark
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Clark
Sibling · 1940 · age 8
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 — Scott-County, Iowa
Open full size
1940 US Federal Census — Scott-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01203-01101)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Martha Couch | 41 | Wife | — | Iowa |
| 42 | Ruth Couch | 15 | Daughter | — | Iowa |
| 43 | Eva Couch | 13 | Daughter | — | Iowa |
| 44 | Alpha Couch | 12 | Daughter | — | Iowa |
| 45 | Ida J Couch | 10 | Daughter | — | Iowa |
| 46 | Trudy Couch | 8 | Daughter | — | Iowa |
| 47 | Otto Couch | 4 | Son | — | Iowa |
| 48 | Marsha Couch | 2 | Daughter | — | Iowa |
| 49 | Paul H Suiter | 44 | Head | Farmer | Iowa |
| 50 | Clara L Suiter | 47 | Wife | — | Iowa |
| 51 | Dorothy L Suiter | 13 | Daughter | — | Iowa |
| 52 | Henry Luba | 80 | Son in law | — | Illinois |
| 53 | Raymond Hamilton | 42 | Head | Truck Driver | Iowa |
| 54 | Gladys Hamilton | 33 | Wife | — | Iowa |
| 55 | Margaret Hamilton | 8 | Daughter | — | Iowa |
| 56 | James Hamilton | 6 | Son | — | Iowa |
| 57 | Clifford Piggott | 20 | Hired man | Laborer | Iowa |
| 58 | William Elliott | 65 | Father in law | — | Iowa |
| 59 | Arthur Elmegreen | 29 | Head | Farmer | Iowa |
| 60 | Burneil Elmegreen | 29 | Wife | — | Iowa |
| 61 | Sueann Elmegreen | 8 | Daughter | — | Iowa |
| 62 | Gerald Elmegreen | 7 | Son | — | Iowa |
| 63 | Ronald Elmegreen | 2 | Son | — | Iowa |
| 64 | Cecil Frank | 45 | Head | Farmer | Iowa |
| 65 | Fannie Frank | 33 | Wife | — | Illinois |
| 66 | Betty Frank | 9 | Daughter | — | Iowa |
| 67 | Meloris Frank | 6 | Daughter | — | Iowa |
| 68 | Donald Frank | 5 | Son | — | Iowa |
| 69 | Richard Frank | 2 | Son | — | Iowa |
| 70 | Virginia Frank | 0 | Daughter | — | Iowa |
| 71 | Charles L Clark | 46 | Head | Farmer | Iowa |
| 72 | Lucile Clark | 49 | Wife | — | Iowa |
| 73 | Charles L Clark THIS PERSON | 20 | Son | — | Iowa |
| 74 | Fredric H Clark | 18 | Son | Laborer | Iowa |
| 75 | Ruth C Clark | 15 | Daughter | — | Iowa |
| 76 | Betty P Clark | 8 | Daughter | — | Iowa |
| 77 | Vivian Clark | 6 | Daughter | — | Iowa |
| 78 | William Moffit | 57 | Head | Farmer | Iowa |
| 79 | Stella G Moffit | 54 | Wife | — | Iowa |
| 80 | John Moffit | 19 | Son | Laborer | Iowa |
Pedigree Summary
Charles + 4 siblings
Gen 1 · 4 parents
~0.92
Gen 2 · 4 grandparents
~0.83
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)