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Louis Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Traill-County, North Dakota
Our Model Tree links this Louis Thompson across the 1930 and 1940 US Censuses in Traill-County, North Dakota (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 8-person household.
Age 52
b. ~1888
Male
Head
Born: North Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Traill-County, North Dakota |
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Hillsboro |
| 1935 Residence (County) | Traill |
| Additional Details | |
| Occupation | Carpenter |
| Industry | house building |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 490 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | Carpenter |
| Township / Ward | Hillsboro |
| Est. Birth Year | ~1888 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Louis | Age | Birth yr |
|---|---|---|---|---|
| Bella Thompson | Daughter | — | 19 | ~1921 |
| Arthur Thompson | Son | — | 8 | ~1932 |
| Louis Thompson | Head | — | 52 | ~1888 |
| Helen Thompson | Daughter | — | 14 | ~1926 |
| Inga Thompson | Spouse | — | 48 | ~1892 |
| Louise Thompson | Son | — | 12 | ~1928 |
| Leonard Thompson | Son | — | 10 | ~1930 |
| Lloyd Thompson | Son | — | 5 | ~1935 |
Census Appearances
1930
Traill, North …
Head, age 42
Traill, North Dakota · implied b. ~1888 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | North Dakota |
| Age at First Marriage | 24 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | Odd Jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Veteran | No |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Traill-County, North …
Head, age 52
Traill-County, North Dakota · implied b. ~1888 — 8 household members
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | North Dakota |
| 1935 Residence (City) | Hillsboro |
| 1935 Residence (County) | Traill |
| Occupation | Carpenter |
| Industry | house building |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 490 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Louis Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Louis Thompson
Head · 1940 · age 52 · b. ~1888 · North Dakota
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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 — Traill-County, North Dakota
Open full size
1940 US Federal Census — Traill-County, North Dakota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03016-00194)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Enoch Holmquist | 46 | Head | Manager | Minnesota |
| 42 | Emma Holmquist | 40 | Wife | — | Minnesota |
| 43 | Ethyl Holmquist | 19 | daughter | Stenographer | South Dakota |
| 44 | Phyllis Holmquist | 18 | daughter | — | South Dakota |
| 45 | James Murphy | 46 | Head | Road Foreman | North Dakota |
| 46 | Verona Murphy | 29 | Wife | — | Montana |
| 47 | Estella Kelly | 44 | Head | Abstractor Of Titles | North Dakota |
| 48 | Elizabeth Anne Kelly | 13 | daughter | — | North Dakota |
| 49 | William Kelly | 11 | Son | — | North Dakota |
| 50 | Mary Katherine Kelly | 9 | daughter | — | North Dakota |
| 51 | Michael Kelly | 8 | Son | — | North Dakota |
| 52 | Anne Murphy | 68 | Mother | — | Canada |
| 53 | William Murphy | 38 | Brother | — | North Dakota |
| 54 | Franklin Mayall | 21 | cousin | Second Man | North Dakota |
| 55 | John B. Hanson | 54 | Head | Trucking | Norway |
| 56 | Anna Hanson | 49 | Wife | — | Norway |
| 57 | Melvin Hanson | 24 | Son | Salesman | North Dakota |
| 58 | Agnes Hanson | 21 | daughter | Stenographer | North Dakota |
| 59 | Harold Hanson | 14 | Son | — | North Dakota |
| 60 | Alvin Lien | 35 | Head | Labour | North Dakota |
| 61 | Beatrice Lien | 26 | Wife | — | North Dakota |
| 62 | Inez Lien | 6 | daughter | — | North Dakota |
| 63 | Curtis Lien | 4 | Son | — | North Dakota |
| 64 | Carl Johnson | 48 | Head | Truck Driver | North Dakota |
| 65 | Mary Johnson | 42 | Wife | — | Minnesota |
| 66 | Ardis Johnson | 18 | daughter | — | North Dakota |
| 67 | Vernon Johnson | 12 | Son | — | North Dakota |
| 68 | Margaret Johnson | 9 | daughter | — | North Dakota |
| 69 | Louis Thompson THIS PERSON | 52 | Head | Carpenter | North Dakota |
| 70 | Inga Thompson | 48 | Wife | — | Minnesota |
| 71 | Bella M. Thompson | 19 | daughter | Labourer | North Dakota |
| 72 | Helen Thompson | 14 | daughter | — | North Dakota |
| 73 | Louise Thompson | 12 | Son | — | North Dakota |
| 74 | Leonard Thompson | 10 | Son | — | North Dakota |
| 75 | Arthur Thompson | 8 | Son | — | North Dakota |
| 76 | Lloyd Thompson | 5 | Son | — | North Dakota |
| 77 | Andrew W. Stuen | 77 | Head | — | Wisconsin |
| 78 | Gerhard Molley | 39 | Head | Section Hand | North Dakota |
| 79 | Virginia Molley | 27 | Wife | — | North Dakota |
| 80 | Marilyn Molley | 4 | daughter | — | North Dakota |
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)