TC
Thomas Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sussex-County, Delaware
Our Model Tree links this Thomas Cooper across the 1920, 1930 and 1940 US Censuses in Sussex-County, Delaware (XGBoost, ~Confirmed), with identified parents Lemuel & Stella — first a son (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Male
Son
Born: Delaware
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sussex-County, Delaware |
| Surname | Cooper |
| Given Name | Thomas S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | R-D District |
| 1935 Residence (County) | Sussex |
| Additional Details | |
| Occupation | Laborer |
| Industry | Poultry House |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 480 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
| Occupation | Laborer |
| Township / Ward | Rd District |
| Est. Birth Year | ~1904 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Lemuel Cooper | Head | — | 66 | ~1874 |
| Betty Cooper | Daughter | — | 11 | ~1929 |
| Stella Cooper | Spouse | — | 60 | ~1880 |
| Thomas Cooper | Son | — | 36 | ~1904 |
Census Appearances
1920
Sussex, Delaware
Son, age 15
Sussex, Delaware · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Thos S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Delaware |
| Mother's Birthplace | Delaware |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1930
Sussex, Delaware
Son, age 26
Sussex, Delaware · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Thomas S |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Delaware |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
1940
Sussex-County, Delaware
Son, age 36
Sussex-County, Delaware · implied b. ~1904 — 4 household members
| Surname | Cooper |
| Given Name | Thomas S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Delaware |
| 1935 Residence (City) | R-D District |
| 1935 Residence (County) | Sussex |
| Occupation | Laborer |
| Industry | Poultry House |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 480 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Delaware |
| Birth Country | United States |
| Birthplace (normalized) | delaware |
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 Thomas Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lemuel Cooper (~0.92 confidence) and mother Stella Cooper (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lemuel Cooper
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Stella Cooper
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Cooper
Son · 1940 · age 36 · b. ~1904 · Delaware
★ You are viewing this record
Sibling
Betty Cooper
Sibling · 1940 · age 11
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 — Sussex-County, Delaware
Open full size
1940 US Federal Census — Sussex-County, Delaware
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00548-00293)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Herman Long | 36 | Head | Farmer | Delaware |
| 42 | Melva Long | 14 | Son | — | Delaware |
| 43 | Frank E. Long | 11 | Son | — | Delaware |
| 44 | Herman L. Long | 9 | Son | — | Delaware |
| 45 | Robert J. Long | 7 | Son | — | Delaware |
| 46 | Jennie Callow | 28 | Housekeeper | Housekeeper | Philadelphia |
| 47 | Dan H. Shockley | 37 | Head | Farmer | Delaware |
| 48 | Flossie Shockley | 34 | Wife | Helper | Delaware |
| 49 | Minnie Shockley | 14 | Daughter | — | Delaware |
| 50 | Cecil Shockley | 13 | Daughter | — | Delaware |
| 51 | Elizabeth Shockley | 12 | Daughter | — | Delaware |
| 52 | Willie C. Stephens | 44 | Head | Farmer | Delaware |
| 53 | Nellie B. Stephens | 33 | Wife | — | Delaware |
| 54 | Clifton Stephens | 10 | Son | — | Delaware |
| 55 | Alberta Stephens | 6 | Daughter | — | Delaware |
| 56 | Elwood Stephens | 0 | Son | — | Delaware |
| 57 | Clarence D. Evans | 45 | Head | Farmer | Maryland |
| 58 | Hazel Evans | 38 | Wife | — | Maryland |
| 59 | Doris Evans | 19 | Daughter | — | Delaware |
| 60 | Eleanor Evans | 8 | Daughter | — | Delaware |
| 61 | James E. Cooper | 21 | Head | Laborer | Delaware |
| 62 | Katie D. Cooper | 21 | Wife | — | Delaware |
| 63 | Melvina Cooper | 2 | Daughter | — | Delaware |
| 64 | William H. Wharton | 53 | Head | Farmer | Delaware |
| 65 | Hattie C. Wharton | 50 | Wife | — | Delaware |
| 66 | Elizabeth J. Wharton | 17 | Daughter | — | Delaware |
| 67 | Bobby J. Wharton | 12 | Son | — | Delaware |
| 68 | Thade K. Wharton | 8 | Son | — | Delaware |
| 69 | John B. Wharton | 63 | Head | Farmer | Delaware |
| 70 | Linda Wharton | 52 | Wife | — | Delaware |
| 71 | Elwood T. Wharton | 24 | Son | — | Delaware |
| 72 | Elda D. Wharton | 18 | Daughter-in-law | — | Delaware |
| 73 | Lemuel E. Cooper | 66 | Head | Farmer | Maryland |
| 74 | Stella E. Cooper | 60 | Wife | Helper | Maryland |
| 75 | Thomas S. Cooper THIS PERSON | 36 | Son | Laborer | Delaware |
| 76 | Betty E. Cooper | 11 | Daughter | — | Pennsylvania |
| 77 | Emery J. Lewis | 67 | Head | Farmer | Delaware |
| 78 | Mae Lewis | 46 | Wife | — | Delaware |
| 79 | Joshua Lewis | 15 | Son | — | Delaware |
| 80 | Edward Lewis | 12 | Son | — | Delaware |
Pedigree Summary
Thomas + 1 sibling
Gen 1 · 2 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)