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Charles Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pierce-County, Washington
Our Model Tree links this Charles Cooper across the 1920, 1930 and 1940 US Censuses in Pierce-County, Washington (XGBoost, ~Confirmed), with identified parents Nathan & Kate — first a head (b.~1903), then head of a 6-person household.
Age 37
b. ~1903
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pierce-County, Washington |
| Surname | Cooper |
| Given Name | Charles L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Harvard Precinct |
| 1935 Residence (County) | Pierce |
| Additional Details | |
| Occupation | Maintenance |
| Industry | Chemical works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Maintenance |
| Township / Ward | Harvard Precinct |
| Est. Birth Year | ~1903 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| Carol Cooper | Daughter | — | 2 | ~1938 |
| Eva Cooper | Daughter | — | 22 | ~1918 |
| Charles Cooper | Head | — | 37 | ~1903 |
| Charles Cooper | Son | — | 15 | ~1925 |
| Donald Cooper | Son | — | 12 | ~1928 |
| Mae Cooper | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Pierce, Washington
Son, age 17
Pierce, Washington · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | New York |
| Occupation | Riveting |
| Industry | Ship Yard |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Pierce, Washington
Head, age 28
Pierce, Washington · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Charles A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Washington |
| Age at First Marriage | 22 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | New York |
| Occupation | Manager |
| Industry | Wholesale Bottle Supply |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Radio Set | No |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Pierce-County, Washington
Head, age 37
Pierce-County, Washington · implied b. ~1903 — 6 household members
| Surname | Cooper |
| Given Name | Charles L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Harvard Precinct |
| 1935 Residence (County) | Pierce |
| Occupation | Maintenance |
| Industry | Chemical works |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1560 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Nathan Cooper (~0.92 confidence) and mother Kate Cooper (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Nathan Cooper
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Kate Cooper
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Cooper
Head · 1940 · age 37 · b. ~1903 · Washington
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Pierce-County, Washington
Open full size
1940 US Federal Census — Pierce-County, Washington
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04355-00909)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles H. Anderson | 45 | Head | Boring Machine Operator | Iowa |
| 2 | Cecil M. Anderson | 40 | Wife | — | Washington |
| 3 | Harry L. Anderson | 19 | Son | Mill Worker | Washington |
| 4 | Richard G. Anderson | 13 | Son | — | Washington |
| 5 | Donald A. Anderson | 10 | Son | Laborer | Washington |
| 6 | Edward K. Veatch | 32 | Head | Laborer | Washington |
| 7 | Erma Veatch | 25 | Wife | — | Washington |
| 8 | Cora Dorcas Coder | 66 | Aunt | — | Illinois |
| 10 | Omar S. Ferris | 46 | Head | Auto Mechanic | Illinois |
| 11 | Harriet W. Ferris | 42 | Wife | — | Wisconsin |
| 12 | George W. Ferris | 22 | Son | Mess Steward | Illinois |
| 13 | Harlan L. Ferris | 7 | Son | — | Washington |
| 14 | John W. Ferris | 2 | Son | — | Washington |
| 15 | Allen F. Mallette | 27 | Head | Laborer | Wisconsin |
| 16 | Beulah E. Mallette | 25 | Wife | — | Nebraska |
| 17 | Charles L. Cooper THIS PERSON | 37 | Head | Maintenance | Washington |
| 18 | Mae Cooper | 37 | Wife | — | Missouri |
| 19 | Eva P. Cooper | 22 | Daughter | House Work | Washington |
| 20 | Charles L. Jr. Cooper | 15 | Son | Carrier | Washington |
| 21 | Donald E. Cooper | 12 | Son | — | Washington |
| 22 | Carol Lee Cooper | 2 | Daughter | — | Washington |
| 23 | Stephen G. Hill | 53 | Head | Operator | Iowa |
| 24 | Laura A. Hill | 57 | Wife | Operator | Missouri |
| 25 | Catherine Helene Cooper | 17 | Granddaughter | — | Washington |
| 26 | Ingimar Sigurdsson | 44 | Head | Longshoreman | Iceland |
| 27 | Catherine Sigurdsson | 49 | Wife | — | Scotland |
| 28 | Herbert Sigurdsson | 10 | Son | — | Washington |
| 29 | Andrew L. Mcdonald | 80 | Head | — | Texas |
| 30 | Emma J. Mcdonald | 73 | Wife | — | Kansas |
| 31 | Daisy Decker | 63 | Step Daughter | — | Illinois |
| 32 | Osmund Marvik | 37 | Head | Fisherman | Norway |
| 33 | Mabel H. Marvik | 34 | Wife | — | Washington |
| 34 | Lloyd Marvik | 2 | Son | — | Washington |
| 35 | Max W. Montgomery | 31 | Head | Lathe Man | Oregon |
| 36 | Ruth L. Montgomery | 32 | Wife | — | Washington |
| 37 | Robert M. Montgomery | 5 | Son | — | Washington |
| 38 | David L. Montgomery | 1 | Son | — | Washington |
| 39 | William O. Robinson | 42 | Head | Meat Wrapper | Arkansas |
| 40 | Elizabeth Robinson | 41 | Wife | — | Arkansas |
Pedigree Summary
Charles
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)