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Walter Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Walter Cooper across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Cooper |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Clairton |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Clairton |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Thelma Cooper | Daughter | — | 14 | ~1926 |
| Lily Cooper | Spouse | — | 39 | ~1901 |
| Ruby Cooper | Daughter | — | 9 | ~1931 |
| Herbert Cooper | Son | — | 16 | ~1924 |
| Walter Cooper | Son | — | 11 | ~1929 |
| Lanza Cooper | Head | — | 38 | ~1902 |
| Theresa Cooper | Daughter | — | 5 | ~1935 |
| Robert Cooper | Son | — | 7 | ~1933 |
Census Appearances
1930
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Florida |
| Mother's Birthplace | Georgia |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 11
Allegheny-County, Pennsylvania · implied b. ~1929 — 8 household members
| Surname | Cooper |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Clairton |
| 1935 Residence (County) | Allegheny |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Walter Cooper across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Walter Cooper
Son · 1940 · age 11 · b. ~1929 · Pennsylvania
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Sibling
Herbert Cooper
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Cooper
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Cooper
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Cooper
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruby Cooper
Sibling · 1940 · age 9
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
19 people indexed on this census page (nara:1940:m-t0627-03400-00543)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 22 | Tilman Hippen | 39 | Head | Labor | South Carolina |
| 23 | Mary Hippen | 32 | Wife | — | South Carolina |
| 24 | Crosby Macklin | 37 | Lodger | Labor | Virginia |
| 25 | Cleveland Adam | 41 | Head | Labor | South Carolina |
| 26 | Clara Adam | 44 | Wife | — | South Carolina |
| 27 | James Adam | 20 | Son | — | South Carolina |
| 28 | Angeline Adam | 19 | Daughter | New Worker | Pennsylvania |
| 29 | Virginia Adam | 12 | Daughter | — | Pennsylvania |
| 30 | Calvin Adam | 10 | Son | — | Pennsylvania |
| 31 | Cleveland Jr. Adam | 9 | Son | — | Pennsylvania |
| 32 | Melvin Adam | 2 | Son | — | Pennsylvania |
| 33 | Lanza Cooper | 38 | Head | Labor | Florida |
| 34 | Lily Cooper | 39 | Wife | — | Georgia |
| 35 | Herbert Cooper | 16 | Son | — | Pennsylvania |
| 36 | Thelma Cooper | 14 | Daughter | — | Pennsylvania |
| 37 | Walter Cooper THIS PERSON | 11 | Son | — | Pennsylvania |
| 38 | Ruby Cooper | 9 | Daughter | — | Pennsylvania |
| 39 | Robert Cooper | 7 | Son | — | Pennsylvania |
| 40 | Theresa Cooper | 5 | Daughter | — | Pennsylvania |
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)