TH
Thomas Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this Thomas Hart across the 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed) — first a head (b.~1900), then head of a 7-person household.
Age 40
b. ~1900
Male
Head
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Hart |
| Given Name | Thomas W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Longmont |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Occupation | Plasterer |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 500 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Plasterer |
| Township / Ward | Longmont |
| Est. Birth Year | ~1900 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Hart | Head | — | 40 | ~1900 |
| Jennie Hart | Spouse | — | 38 | ~1902 |
| Lois Hart | Daughter | — | 5 | ~1935 |
| Mildred Hart | Daughter | — | 7 | ~1933 |
| Herbert Hart | Son | — | 12 | ~1928 |
| Wanda Hart | Daughter | — | 2 | ~1938 |
| Eloise Hart | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Boulder, Colorado
Son, age 30
Boulder, Colorado · implied b. ~1900 — 23 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Thomas J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Age at First Marriage | 27 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Iowa |
| Occupation | Laborer |
| Industry | Odd Jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Boulder-County, Colorado
Head, age 40
Boulder-County, Colorado · implied b. ~1900 — 7 household members
| Surname | Hart |
| Given Name | Thomas W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Longmont |
| 1935 Residence (County) | Boulder |
| Occupation | Plasterer |
| Industry | Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 500 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Thomas Hart across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Hart
Head · 1940 · age 40 · b. ~1900 · Colorado
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00457-01016)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Raymond King | 26 | Head | Miner | Oklahoma |
| 42 | Margaret King | 21 | Wife | Manager | Oklahoma |
| 43 | Anne Dodge | 51 | Lodger | Clerk | Iowa |
| 44 | Joe Baulhart | 54 | Lodger | Owner | Maryland |
| 45 | Clarke Peck | 75 | Lodger | — | Kentucky |
| 46 | Jenny Eastman | 45 | Lodger | Steel Worker | Kentucky |
| 47 | Melvin Schaberling | 27 | Lodger | Teacher | New Mexico |
| 48 | Charles W. Hart | 69 | Head | — | Kansas |
| 49 | Mary Elizabeth Hart | 69 | Wife | — | Iowa |
| 50 | Harry Jr. Hart | 19 | Grandson | — | Nebraska |
| 51 | Thomas W. Hart THIS PERSON | 40 | Head | Plasterer | Nebraska |
| 52 | Jennie Hart | 38 | Wife | — | Colorado |
| 53 | Herbert Hart | 12 | Son | — | Colorado |
| 54 | Eloise Hart | 10 | Daughter | — | Colorado |
| 55 | Mildred Hart | 7 | Daughter | — | Colorado |
| 56 | Lois Hart | 5 | Daughter | — | Colorado |
| 57 | Wanda Hart | 2 | Daughter | — | Colorado |
| 58 | George E. Smith | 81 | Head | — | Illinois |
| 59 | John Barnett | 26 | Head | Book Keeper | Illinois |
| 60 | Roberta Barnett | 25 | Wife | — | Illinois |
| 61 | John Jr. Barnett | 4 | Son | — | Illinois |
| 62 | Carol Ann Barnett | 0 | Daughter | — | Colorado |
| 63 | Hubert Baydon | 41 | Head | Laborer | Missouri |
| 64 | Stella Baydon | 35 | Wife | — | Missouri |
| 65 | Louisa Baydon | 9 | Daughter | — | Colorado |
| 66 | Tom Osborn | 68 | Lodger | — | Illinois |
| 67 | Dave S. Thomas | 73 | Head | — | Illinois |
| 68 | Richard Saunders | 74 | Head | — | Virginia |
| 69 | Lula Saunders | 66 | Wife | — | Kentucky |
| 70 | Sophia Betman | 67 | Head | Housekeeper | Germany |
| 71 | Alice Johnson | 72 | Head | — | Michigan |
| 72 | Scott Walden | 58 | Head | Barber | Iowa |
| 73 | Etta Walden | 50 | Wife | — | Missouri |
| 74 | Clair Crawford | 45 | Head | Merchant | Utah |
| 75 | Marion Crawford | 35 | Wife | — | Colorado |
| 76 | Mary Ellen Crawford | 14 | Daughter | — | Colorado |
| 77 | Ed Chandler | 37 | Head | Salesman | Iowa |
| 78 | Emel Chandler | 36 | Wife | — | Iowa |
| 79 | Wilbur Chandler | 15 | Son | — | Nebraska |
| 80 | Patsy Lou Chandler | 8 | Daughter | — | Iowa |
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)