JT
James Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this James Thompson across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Lloyd & Boyd — first a head (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Thompson |
| Given Name | James H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Salesman |
| Industry | Retail Meat Dept. |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 1560 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Salesman |
| Township / Ward | Denver |
| Est. Birth Year | ~1913 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Carol Thompson | Daughter | — | 5 | ~1935 |
| Judy Thompson | Daughter | — | 3 | ~1937 |
| James Thompson | Head | — | 27 | ~1913 |
| Julia Thompson | Spouse | — | 25 | ~1915 |
Census Appearances
1920
Denver, Colorado
Son, age 7
Denver, Colorado · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | James V |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Ohio |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Son, age 17
Denver, Colorado · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | James H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Head, age 27
Denver-County, Colorado · implied b. ~1913 — 4 household members
| Surname | Thompson |
| Given Name | James H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver |
| 1935 Residence (County) | Denver |
| Occupation | Salesman |
| Industry | Retail Meat Dept. |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 1560 |
| 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 James Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lloyd Thompson (~0.92 confidence) and father Boyd Thompson (~0.92 confidence) and mother Margaret Thompson (~0.92 confidence) and mother Margaret Thompson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lloyd Thompson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Boyd Thompson
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Margaret Thompson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Margaret Thompson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Thompson
Head · 1940 · age 27 · b. ~1913 · Colorado
★ 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 — 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-t0627-00487-00754)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph R. O'Connell | 8 | Son | — | Colorado |
| 2 | Raymond S. O'Connell | 6 | Son | — | Colorado |
| 3 | Lucille Ann O'Connell | 4 | Daughter | — | Colorado |
| 4 | Will P. Conner | 70 | Head | Salesman | Indiana |
| 5 | Janet M. Conner | 70 | Wife | — | Illinois |
| 6 | Lloyd Knox | 58 | Head | Salesman | Missouri |
| 7 | Wayne Knox | 12 | Son | — | Montana |
| 8 | Richard Putnam | 38 | Head | Registrar | Minnesota |
| 9 | Ruth D. Putnam | 39 | Wife | — | Iowa |
| 10 | Dorothy Putnam | 17 | Daughter | — | Minnesota |
| 11 | Richard Putnam | 14 | Son | — | North Dakota |
| 12 | Richard S. Lindstrom | 49 | Head | Gardener | Nebraska |
| 13 | Esther Lindstrom | 46 | Wife | — | Nebraska |
| 14 | Dale Lindstrom | 23 | Son | Bookkeeper | Nebraska |
| 15 | Harold Lindstrom | 20 | Son | Office Boy | Nebraska |
| 16 | James H. Thompson THIS PERSON | 27 | Head | Salesman | Colorado |
| 17 | Julia Ann Thompson | 25 | Wife | — | Nebraska |
| 18 | Carol Joyce Thompson | 5 | Daughter | — | Colorado |
| 19 | Judy Arlene Thompson | 3 | Daughter | — | Colorado |
| 20 | Edwin A. Feder | 51 | Head | Mechanic | Kansas |
| 21 | Dorothy S. Feder | 42 | Wife | — | Kansas |
| 22 | Dorothy Feder | 12 | Daughter | — | Colorado |
| 23 | Robert S. Feder | 8 | Son | — | Colorado |
| 24 | Nancy Feder | 1 | Daughter | — | Colorado |
| 25 | Harry S. Burdick | 34 | Head | Chiropractor | New York |
| 26 | Lois Burdick | 33 | Wife | — | Kansas |
| 27 | Mary Ella Pesh | 9 | Daughter | — | Kansas |
| 28 | Harriet A. Pesh | 4 | Daughter | — | Colorado |
| 29 | Cargill C. Young | 63 | Head | Mortician | Michigan |
| 30 | Mabel M. Young | 63 | Wife | — | Colorado |
| 31 | — | None | — | — | — |
| 32 | Dennis Koontz | 60 | Head | Mechanic | Indiana |
| 33 | Una Koontz | 22 | Wife | Stenog. | Texas |
| 34 | Alberta Ann Koontz | 1 | Daughter | — | Colorado |
| 35 | Janet Lea Koontz | 0 | Daughter | — | Colorado |
| 36 | — | None | — | — | — |
| 37 | Leah A. Shay | 59 | Head | Locomotive Engineer | Colorado |
| 38 | Sadie R. Shay | 56 | Wife | — | Texas |
| 39 | Everett Goodale | 27 | Head | Inspector | Colorado |
| 40 | Amy Goodale | 27 | Wife | — | Colorado |
Pedigree Summary
James
Gen 1 · 4 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)