JC
Joseph Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Juan-County, Utah
Our Model Tree links this Joseph Cooper across the 1920, 1930 and 1940 US Censuses in San-Juan-County, Utah (XGBoost, ~Confirmed), with identified parents Jesse & Mary — first a head (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Juan-County, Utah |
| Surname | Cooper |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Cheyenne |
| Additional Details | |
| Occupation | mechanic |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1320 |
| Highest Grade | C 2 |
| 1935 Residence | Wyoming |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Mechanic |
| Township / Ward | Monticello Town |
| Est. Birth Year | ~1910 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Duine Cooper | Daughter | — | ~1940 | |
| Cleone Cooper | Spouse | — | 26 | ~1914 |
| Joseph Cooper | Head | — | 30 | ~1910 |
Census Appearances
Son, age 10
San Juan, Utah · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Canada |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
San Juan, …
Son, age 20
San Juan, Utah · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Joe W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Canada |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
San-Juan-County, Utah
Head, age 30
San-Juan-County, Utah · implied b. ~1910 — 3 household members
| Surname | Cooper |
| Given Name | Joseph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Cheyenne |
| Occupation | mechanic |
| Industry | Garage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1320 |
| Highest Grade | C 2 |
| 1935 Residence | Wyoming |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Joseph Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jesse Cooper (~0.92 confidence) and mother Mary Cooper (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jesse Cooper
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Cooper
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Cooper
Head · 1940 · age 30 · b. ~1910 · Utah
★ 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 — San-Juan-County, Utah
Open full size
1940 US Federal Census — San-Juan-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04217-00020)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Louise Neilson | 9 | daughter | — | Utah |
| 2 | Joseph Cooper THIS PERSON | 30 | Head | Mechanic | Colorado |
| 3 | Cleone Cooper | 26 | wife | — | Utah |
| 4 | Duine Cooper | 0 | daughter | — | Utah |
| 5 | Arthur Wood | 63 | Head | Carpenter | Utah |
| 6 | Jenny Wood | 61 | wife | — | Utah |
| 7 | Paul Wood | 24 | son | Carpenter | Utah |
| 8 | Gilbert Behrew | 50 | Head | Farm Agent | Utah |
| 9 | Jenny Mae Behrew | 48 | wife | — | Wyoming |
| 10 | Lenore Behrew | 17 | daughter | Housework | Utah |
| 11 | Gilbert Clay Behrew | 9 | son | — | Utah |
| 12 | Clarence Eugene Behrew | 7 | son | — | Utah |
| 13 | Donald T Adams | 32 | Head | Attorney | Utah |
| 14 | Dorothy Adams | 28 | wife | — | Utah |
| 15 | Suzanne Adams | 1 | daughter | — | Utah |
| 16 | Noel Sitton | 46 | Head | Owner Operator | Missouri |
| 17 | Ollie Sitton | 45 | wife | Clerk | Missouri |
| 18 | Maxine Sitton | 20 | daughter | Bookkeeper | New Mexico |
| 19 | Roland Sitton | 13 | son | — | Colorado |
| 20 | Julia Chaffin | 32 | Head | Beauty Operator | Utah |
| 21 | Carol Chaffin | 6 | daughter | — | Utah |
| 22 | Donna Chaffin | 5 | daughter | — | Utah |
| 23 | Cecelia Wyher | 62 | mother | — | Utah |
| 24 | Edgar Richmond | 37 | Head | Cook | Utah |
| 25 | Edith Richmond | 33 | wife | Waitress | Utah |
| 26 | Clyde Richmond | 13 | son | — | Utah |
| 27 | Shirley Richmond | 12 | daughter | — | California |
| 28 | Cornelius Richmond | 11 | son | — | California |
| 29 | La Donna Richmond | 9 | daughter | — | Colorado |
| 30 | Karl Lyman | 27 | Head | Salesman | Utah |
| 31 | Edith Lyman | 26 | wife | — | Kentucky |
| 32 | Clayson Lyman | 3 | son | — | Colorado |
| 33 | Joyce Lyman | 2 | daughter | — | Colorado |
| 34 | Leo Glen Hurd | 21 | Head | Truck Driver | New Mexico |
| 35 | Francis Hurd | 17 | wife | — | Utah |
| 36 | Jack Glen Hurd | 0 | son | — | Utah |
| 37 | Fred Ruckman | 47 | Head | Farm Laborer | Nebraska |
| 38 | Juan Valdez | 30 | Head | Sheepherder | New Mexico |
| 39 | Claud H Young | 39 | Head | Stockman | Utah |
| 40 | Meg Young | 34 | wife | — | Utah |
Related Census Records
Pedigree Summary
Joseph
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)