HT
Harold Thomas — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this Harold Thomas across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Eleanor & Eleanor — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Thomas |
| Given Name | Harold J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 53 |
| Income (1939) | 750 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Clerk |
| Township / Ward | Denver City |
| Est. Birth Year | ~1915 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Harold Thomas | Son | — | 25 | ~1915 |
| Frank Thomas | Son | — | 27 | ~1913 |
| Eleanor Thomas | Spouse | — | 49 | ~1891 |
| Eleanor Thomas | Daughter | — | 29 | ~1911 |
| Frank Thomas | Head | — | 49 | ~1891 |
Census Appearances
1920
Denver, Colorado
Son, age 5
Denver, Colorado · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harold J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Son, age 15
Denver, Colorado · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harold J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Son, age 25
Denver-County, Colorado · implied b. ~1915 — 5 household members
| Surname | Thomas |
| Given Name | Harold J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Occupation | Clerk |
| Industry | Retail Grocery |
| Class of Worker | PW |
| Hours Worked | 53 |
| Income (1939) | 750 |
| Highest Grade | H 2 |
| 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 Harold Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Eleanor Thomas (~0.92 confidence) and mother Eleanor Thomas (~0.92 confidence) and father Frank Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Eleanor Thomas
b. ~1891
Source mother
● Household
· direct · ~0.92
Mother
Eleanor Thomas
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Frank Thomas
b. ~1891
Source father
● Household
· direct · ~0.92
This person
Anchor record
Harold Thomas
Son · 1940 · age 25 · b. ~1915 · Colorado
★ You are viewing this record
Sibling
Eleanor Thomas
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Thomas
Sibling · 1940 · age 27
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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00484-00863)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Howard E Banghart | 43 | Head | Salesman | Colorado |
| 2 | Marian B Banghart | 41 | Wife | — | Indiana |
| 3 | Howard B Banghart | 14 | Son | — | Colorado |
| 4 | Roger B Banghart | 12 | Son | — | Colorado |
| 5 | Donald E Banghart | 9 | Son | — | Colorado |
| 6 | Vincent L Keely | 45 | Head | Fire. Freight App | Colorado |
| 7 | Marguerite D Keely | 43 | Wife | — | Colorado |
| 8 | William R Keely | 20 | Son | — | Colorado |
| 9 | Thelma M Keely | 16 | Daughter | — | Colorado |
| 10 | Frank C Thomas | 49 | Head | Proprietor | Colorado |
| 11 | Eleanor E Thomas | 49 | Wife | — | Illinois |
| 12 | Eleanor M Thomas | 29 | Daughter | Switch Bd. Oper. | Colorado |
| 13 | Frank C Jr Thomas | 27 | Son | Truck Driver | Colorado |
| 14 | Harold J Thomas THIS PERSON | 25 | Son | Clerk | Colorado |
| 15 | Jean P Varian | 56 | Head | Teacher | Colorado |
| 16 | Rosamond Varian | 50 | Wife | — | Colorado |
| 17 | Robert S Varian | 26 | Son | — | Kansas |
| 18 | Edith M Varian | 20 | Daughter | Student | Pennsylvania |
| 19 | Charles M Foss | 45 | Head | Secretarial W. | Colorado |
| 20 | Rhea Foss | 42 | Wife | Salesman | Colorado |
| 21 | Frances Foss | 17 | Daughter | — | Colorado |
| 22 | Charles Foss | 15 | Son | — | Colorado |
| 23 | Henry F Harris | 51 | Head | Accountant | Virginia |
| 24 | Pearl E Harris | 46 | Wife | — | Kansas |
| 25 | Bernice L Harris | 26 | Daughter | Stenographer | Kansas |
| 26 | Curtis E Harris | 25 | Son | Office Clerk | Kansas |
| 27 | Tangen R Anderson | 44 | Head | — | Iowa |
| 28 | Mina S Anderson | 44 | Wife | — | Missouri |
| 29 | Howard B Mitchell | 31 | Head | Printer | Colorado |
| 30 | Lois M Mitchell | 33 | Wife | — | Nebraska |
| 31 | George H Fleming | 26 | Lodger | Attendant | Nebraska |
| 32 | John H Woodley | 32 | Head | Salesman | Colorado |
| 33 | Irene F Woodley | 28 | Wife | — | Colorado |
| 34 | John H Jr Woodley | 1 | Son | — | Colorado |
| 35 | Robert E Kitzler | 27 | Head | Draftsman | Iowa |
| 36 | Mildred L Kitzler | 26 | Wife | — | Iowa |
| 37 | Alfred Darnell | 37 | Head | Office Clerk | Colorado |
| 38 | Florence E Darnell | 36 | Wife | — | Colorado |
| 39 | Roger M Darnell | 4 | Son | — | Colorado |
| 40 | Augusta Royalty | 75 | M. in Law | — | Sweden |
Related Census Records
Pedigree Summary
Harold + 2 siblings
Gen 1 · 3 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)