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Thelma Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Delta-County, Colorado
Our Model Tree links this Thelma Davis across the 1920, 1930 and 1940 US Censuses in Delta-County, Colorado (XGBoost, ~Confirmed), with identified parents Alvin & Levi — first a daughter (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delta-County, Colorado |
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Precinct 16 Cedaridge |
| 1935 Residence (County) | Delta |
| Additional Details | |
| Occupation | Cook |
| Industry | High School Lunch Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 45 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Cook |
| Township / Ward | Precinct 16 Cedaridge |
| Est. Birth Year | ~1918 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Marjorie Davis | Daughter | — | 17 | ~1923 |
| Hattie Davis | Daughter | — | 25 | ~1915 |
| Thelma Davis | Daughter | — | 22 | ~1918 |
| Alvin Davis | Head | — | 73 | ~1867 |
| Myrtie Davis | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Delta, Colorado
Daughter, age 1
Delta, Colorado · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Thelma H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Missouri |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Delta, Colorado
Daughter, age 11
Delta, Colorado · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Delta-County, Colorado
Daughter, age 22
Delta-County, Colorado · implied b. ~1918 — 5 household members
| Surname | Davis |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Precinct 16 Cedaridge |
| 1935 Residence (County) | Delta |
| Occupation | Cook |
| Industry | High School Lunch Project |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 45 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Thelma Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alvin Davis (~0.92 confidence) and father Levi Davis (~0.92 confidence) and father Alvin Davis (~0.92 confidence) and mother Myrtle Davis (~0.92 confidence) and mother Myrtie Davis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alvin Davis
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Levi Davis
b. ~1866
Source father
● Household
· direct · ~0.92
Father
Alvin Davis
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Myrtle Davis
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Myrtie Davis
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thelma Davis
Daughter · 1940 · age 22 · b. ~1918 · Colorado
★ You are viewing this record
Sibling
Hattie Davis
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Davis
Sibling · 1940 · age 17
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 — Delta-County, Colorado
Open full size
1940 US Federal Census — Delta-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00459-00973)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Fischer | 9 | Son | — | Colorado |
| 2 | Edwin Jr Fischer | 5 | Son | — | Colorado |
| 3 | Albert W. Hogg | 42 | Head | Farmer | Colorado |
| 4 | Bertha L. Hogg | 36 | Wife | — | Colorado |
| 5 | La Lorraine Hogg | 14 | Daughter | — | Colorado |
| 6 | Clarence A. Hogg | 12 | Son | — | California |
| 7 | Harold G Hogg | 5 | Son | — | Colorado |
| 8 | Elmer S. Wick | 33 | Head | Farmer | Kansas |
| 9 | Lucille Wick | 25 | Wife | — | Colorado |
| 10 | Melvin Wick | 5 | Son | — | Colorado |
| 11 | Marlene Wick | 1 | Daughter | — | Colorado |
| 12 | Eldon A. Spur | 38 | Head | Hoist Operator | Texas |
| 13 | Lillie Spur | 31 | Wife | — | Oklahoma |
| 14 | Roy Spur | 11 | Son | — | Oklahoma |
| 15 | Ernest J. Hogg | 39 | Head | — | Colorado |
| 16 | George Hogg | 13 | Son | — | Colorado |
| 17 | Carl Wiley | 41 | Head | — | Colorado |
| 18 | Effie Wiley | 35 | Wife | — | Colorado |
| 19 | Duane Wiley | 12 | Son | — | Colorado |
| 20 | Donald Wiley | 7 | Son | — | Colorado |
| 21 | Guy I Cook | 52 | Head | Farmer | Indiana |
| 22 | Mae Cook | 49 | Wife | — | Indiana |
| 23 | Otis Cottrell | 36 | Head | Farmer | Missouri |
| 24 | Eva Cottrell | 37 | Wife | — | Oklahoma |
| 25 | Hershel Cottrell | 15 | Son | — | Oklahoma |
| 26 | Margaret Cottrell | 10 | Daughter | — | Kansas |
| 27 | Lois Cottrell | 6 | Daughter | — | Colorado |
| 28 | Danville Walker | 78 | Head | — | Missouri |
| 29 | Alvin T. Davis | 73 | Head | Farmer | Iowa |
| 30 | Myrtie T. Davis | 54 | Wife | — | Missouri |
| 31 | Hattie Davis | 25 | Daughter | — | Colorado |
| 32 | Thelma Davis THIS PERSON | 22 | Daughter | Cook | Colorado |
| 33 | Marjorie Davis | 17 | Daughter | — | Colorado |
| 34 | Eugene Bowen | 53 | Head | — | Colorado |
| 35 | Ida Bowen | 53 | Wife | — | Colorado |
| 36 | Fern Bowen | 17 | Daughter | — | Colorado |
| 37 | Richard J. Briscoe | 46 | Head | — | Iowa |
| 38 | Nell S. Briscoe | 41 | Wife | — | Kansas |
| 39 | William J. Briscoe | 19 | Son | — | Colorado |
| 40 | Mary E. Briscoe | 17 | Daughter | Typist | Colorado |
Related Census Records
Pedigree Summary
Thelma + 2 siblings
Gen 1 · 5 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)