HC
Herbert Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Scott-County, Iowa
Our Model Tree links this Herbert Clark across the 1920, 1930 and 1940 US Censuses in Scott-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 4-person household.
Age 54
b. ~1886
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Scott-County, Iowa |
| Surname | Clark |
| Given Name | Herbert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Additional Details | |
| Occupation | Plasterer |
| Industry | Building |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Plasterer |
| Township / Ward | Davenport City |
| Est. Birth Year | ~1886 |
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 Herbert | Age | Birth yr |
|---|---|---|---|---|
| Joan Correll | Other | — | 3 | ~1937 |
| Herbert Clark | Head | — | 54 | ~1886 |
| Leona Clark | Spouse | — | 48 | ~1892 |
| Dorothy Correll | Daughter | — | 25 | ~1915 |
Census Appearances
1920
Scott, Iowa
Head, age 35
Scott, Iowa · implied b. ~1885 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Herbert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Scott, Iowa
Head, age 44
Scott, Iowa · implied b. ~1886 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Herbert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 25 |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Plasterer |
| Industry | Buildings |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Scott-County, Iowa
Head, age 54
Scott-County, Iowa · implied b. ~1886 — 4 household members
| Surname | Clark |
| Given Name | Herbert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Davenport City |
| 1935 Residence (County) | Scott |
| Occupation | Plasterer |
| Industry | Building |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 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 Herbert Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Herbert Clark
Head · 1940 · age 54 · b. ~1886 · Iowa
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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-t0627-01202-01151)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Carson | 36 | Head | Laborer | Illinois |
| 2 | Emma Carson | 35 | Wife | — | Iowa |
| 3 | Betty Jane Carson | 11 | Daughter | — | Illinois |
| 4 | William Jr. Carson | 10 | Son | — | Illinois |
| 5 | Leroy W. Carson | 8 | Son | — | Illinois |
| 6 | Walter Link | 44 | Head | Fire Fighter | Iowa |
| 7 | Sybil A. Link | 41 | Wife | — | Missouri |
| 8 | Leroy Schreel | 26 | Head | Grinder | Iowa |
| 9 | Rosita Schreel | 23 | Wife | — | Iowa |
| 10 | Mabel Schreel | 7 | Daughter | — | Iowa |
| 11 | June Schreel | 3 | Daughter | — | Iowa |
| 12 | William Smith | 29 | Head | Grinder | Iowa |
| 13 | Claude Stansberry | 21 | Uncle | Salesman | Iowa |
| 14 | Werden Garrow | 34 | Head | Molder | Iowa |
| 15 | Zelma Garrow | 35 | Wife | — | Iowa |
| 16 | Gale Struke | 15 | Daughter | — | Iowa |
| 17 | Louise Garrow | 11 | Daughter | — | Iowa |
| 18 | Herbert Clark THIS PERSON | 54 | Head | Plasterer | Iowa |
| 19 | Leona Clark | 48 | Wife | Power Machine Operator | Illinois |
| 20 | Dorothy Correll | 25 | Daughter | Power Machine Operator | Iowa |
| 21 | Joan Correll | 3 | Granddaughter | — | Iowa |
| 22 | Louise Rann | 76 | Head | — | Germany |
| 23 | Velma L. Edens | 30 | Niece | Stenographer | Iowa |
| 24 | Roy Wiese | 29 | Head | Machinist | Iowa |
| 25 | Lucille Wiese | 23 | Wife | — | Illinois |
| 26 | Marilyn Wiese | 6 | Daughter | — | Iowa |
| 27 | Mary Schadel | 58 | Head | Second Cook | Germany |
| 28 | Frank Robinson | 67 | Head | Tool Repairer | Illinois |
| 29 | Carrie Robinson | 73 | Wife | — | Illinois |
| 30 | James White | 71 | Roomer | — | Iowa |
| 31 | Etta White | 44 | Roomer | — | Illinois |
| 32 | Ivan Hatchel | 32 | Head | Recreation Leader | Iowa |
| 33 | Robert Hatchel | 15 | Son | — | Iowa |
| 34 | Earl White | 37 | Brother | Insulator Machine Operator | Iowa |
| 35 | John Schlutz | 62 | Head | Proprietor | Iowa |
| 36 | Grace Schlutz | 59 | Wife | — | Missouri |
| 37 | Helen Fanning | 39 | Head | Saleswoman | Iowa |
| 38 | Charles Fanning | 18 | Son | Clerk | Iowa |
| 39 | Jerry Fanning | 13 | Son | — | Iowa |
| 40 | Shirley Fanning | 11 | 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)