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Walter Cooper — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this Walter Cooper across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Head
Born: MARYLAND
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | COOPER |
| Given Name | WALTER E |
| Relationship to Head | HEAD |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | MARYLAND |
| 1935 Residence (City) | BALTIMORE CITY |
| 1935 Residence (County) | BALTIMORE |
| Additional Details | |
| Occupation | APPLIANCE SALESMAN |
| Industry | GAS AND ELECTRIC CORPORATION |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Appliance Salesman |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1895 |
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 Walter | Age | Birth yr |
|---|---|---|---|---|
| Mary Cooper | Spouse | — | 40 | ~1900 |
| Walter Cooper | Head | — | 45 | ~1895 |
| Warren Cooper | Son | — | 16 | ~1924 |
| Margaret Cooper | Daughter | — | 9 | ~1931 |
Census Appearances
1920
Anne Arundel, …
Son, age 23
Anne Arundel, Maryland · implied b. ~1897 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 34
Baltimore, Maryland · implied b. ~1896 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Walter E |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Section Hand |
| Industry | Exide |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 19 |
| Radio Set | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 45
Baltimore-City-County, Maryland · implied b. ~1895 — 4 household members
| Surname | COOPER |
| Given Name | WALTER E |
| Relationship to Head | HEAD |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | MARYLAND |
| 1935 Residence (City) | BALTIMORE CITY |
| 1935 Residence (County) | BALTIMORE |
| Occupation | APPLIANCE SALESMAN |
| Industry | GAS AND ELECTRIC CORPORATION |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Walter Cooper
Head · 1940 · age 45 · b. ~1895 · Maryland
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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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01532-00501)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J Dunn | 68 | HEAD | Bristle Worker | MARYLAND |
| 2 | Amelia A Dunn | 66 | WIFE | — | MARYLAND |
| 3 | Evelyn Dunn | 19 | DAUGHTER | Mail Messenger | MARYLAND |
| 4 | John J, Jr Dunn | 18 | SON | — | MARYLAND |
| 5 | May Dunn | 16 | DAUGHTER | — | MARYLAND |
| 6 | Elizabeth Appleby | 63 | HEAD | — | MARYLAND |
| 7 | William Appleby | 22 | SON | Driver Coal Truck | MARYLAND |
| 8 | Gertrude Nenoff | 32 | DAUGHTER | Telephone Operator | MARYLAND |
| 9 | Gerrit J Hoekstra | 55 | HEAD | School Janitor | HOLLAND |
| 10 | Marie G Hoekstra | 50 | WIFE | — | HOLLAND |
| 11 | Fred G Hoekstra | 27 | SON | Mail Carrier | NEW JERSEY |
| 12 | Florence Hoekstra | 18 | DAUGHTER | Packer | NEW JERSEY |
| 13 | Catherine L Hoekstra | 16 | DAUGHTER | — | NEW JERSEY |
| 14 | Leroy C Copen Spire | 29 | HEAD | Insurance Agent | MARYLAND |
| 15 | Margaret A Copen Spire | 29 | WIFE | — | PENNSYLVANIA |
| 16 | Michael L Copen Spire | 5 | SON | — | MARYLAND |
| 17 | Mary M Copen Spire | 1 | DAUGHTER | — | MARYLAND |
| 18 | Mildred L Fortney | 29 | HEAD | Dress Maker | MARYLAND |
| 19 | Delores Fortney | 12 | DAUGHTER | — | MARYLAND |
| 20 | Jean Fortney | 5 | DAUGHTER | — | MARYLAND |
| 21 | Albert W Bockman | 37 | HEAD | Punch Operator | MARYLAND |
| 22 | Frances A Bockman | 35 | WIFE | — | MARYLAND |
| 23 | Rosemary Bockman | 5 | DAUGHTER | — | MARYLAND |
| 24 | Albert W, Jr Bockman | 1 | SON | — | MARYLAND |
| 25 | Walter E Cooper THIS PERSON | 45 | HEAD | Appliance Salesman | MARYLAND |
| 26 | Mary C Cooper | 40 | WIFE | — | MARYLAND |
| 27 | Warren E Cooper | 16 | SON | — | MARYLAND |
| 28 | Margaret A Cooper | 9 | DAUGHTER | — | MARYLAND |
| 29 | Bessie R Tucker | 40 | HEAD | — | MARYLAND |
| 30 | William J Schiller | 54 | HEAD | Post Office Clerk | MARYLAND |
| 31 | Veronica M Schiller | 56 | WIFE | — | MARYLAND |
| 32 | Mary A Mccaull | 72 | HEAD | — | MARYLAND |
| 33 | Margaret E Mccaull | 32 | DAUGHTER | Office Clerk | MARYLAND |
| 34 | Catherine G Mccaull | 29 | DAUGHTER | Secretary | MARYLAND |
| 35 | George Barnhart | 39 | LODGER | Milk Salesman | PENNSYLVANIA |
| 36 | Collen R Lewis | 30 | HEAD | Turret Lathe Operator | MARYLAND |
| 37 | Catherine L Lewis | 24 | WIFE | Telephone Instructor | MARYLAND |
| 38 | Mollie A Bell | 66 | HEAD | — | MARYLAND |
| 39 | Stanley A Bell | 37 | SON | Automobile Mechanic | MARYLAND |
| 40 | Olga M Bell | 29 | DAUGHTER | Dental Assistant | MARYLAND |
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)