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Louis Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Louis Thompson across the 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 6-person household.
Age 49
b. ~1891
Male
Head
Born: Kentucky
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mechanicsburg Township |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Occupation | Laborer |
| Industry | Road Construction Project |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 500 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Laborer |
| Township / Ward | Mechanicsburg Township |
| Est. Birth Year | ~1891 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Louis | Age | Birth yr |
|---|---|---|---|---|
| Eugene Thompson | Son | — | 9 | ~1931 |
| James Thompson | Son | — | 16 | ~1924 |
| Louis Thompson | Head | — | 49 | ~1891 |
| Lois Thompson | Daughter | — | 12 | ~1928 |
| Ora Thompson | Spouse | — | 40 | ~1900 |
| Lena Thompson | Daughter | — | 18 | ~1922 |
Census Appearances
1930
Sangamon, Illinois
Head, age 38
Sangamon, Illinois · implied b. ~1892 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Kentucky |
| Age at First Marriage | 25 |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Occupation | Farm Laborer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Veteran | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Sangamon-County, Illinois
Head, age 49
Sangamon-County, Illinois · implied b. ~1891 — 6 household members
| Surname | Thompson |
| Given Name | Louis |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mechanicsburg Township |
| 1935 Residence (County) | Sangamon |
| Occupation | Laborer |
| Industry | Road Construction Project |
| Class of Worker | GW |
| Hours Worked | 32 |
| Income (1939) | 500 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 49 · b. ~1891 · Illinois
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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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00887-00496)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jo Ann Watkins | 7 | Daughter | — | Illinois |
| 42 | Philip Watkins | 5 | Son | — | Illinois |
| 43 | Margaret Watkins | 4 | Daughter | — | Illinois |
| 44 | Lloyd Morris | 39 | Head | President | Illinois |
| 45 | Amelia Morris | 40 | Wife | — | Illinois |
| 46 | Katherine Morris | 16 | Daughter | — | Illinois |
| 47 | Jean Morris | 15 | Daughter | — | Illinois |
| 48 | Robert Morris | 5 | Son | — | Illinois |
| 49 | Donald Morris | 1 | Son | — | Illinois |
| 50 | Eugene Duggan | 42 | Head | Laborer | Illinois |
| 51 | Anna Duggan | 39 | Wife | — | Illinois |
| 52 | James Duggan | 18 | Son | Laborer | Iowa |
| 53 | Leo Duggan | 17 | Son | — | Illinois |
| 54 | Jack Duggan | 15 | Son | — | Illinois |
| 55 | William Duggan | 13 | Son | — | Illinois |
| 56 | Richard Duggan | 9 | Son | — | Illinois |
| 57 | Patrick Duggan | 8 | Son | — | Illinois |
| 58 | Louis Thompson THIS PERSON | 49 | Head | Laborer | Kentucky |
| 59 | Ora Thompson | 40 | Wife | — | Kentucky |
| 60 | Lena Mae Thompson | 18 | Daughter | Assistant Cook | Illinois |
| 61 | James Thompson | 16 | Son | Laborer | Illinois |
| 62 | Lois Louise Thompson | 12 | Daughter | — | Illinois |
| 63 | Eugene Thompson | 9 | Son | — | Illinois |
| 64 | Garris Bowman | 30 | Head | Farmer | Missouri |
| 65 | Pauline Bowman | 28 | Wife | — | Illinois |
| 66 | Katherine Bowman | 8 | Daughter | — | Illinois |
| 67 | James Bowman | 7 | Son | — | Illinois |
| 68 | Thomas C. Lane | 45 | Head | Farmer | Illinois |
| 69 | Pearl M. Lane | 43 | Wife | — | Illinois |
| 70 | Vera Louise Lane | 15 | Daughter | — | Illinois |
| 71 | James E. Goben | 45 | Head | Laborer | Illinois |
| 72 | Cora Goben | 36 | Wife | — | Illinois |
| 73 | Margaret Goben | 19 | Daughter | Housekeeper | Illinois |
| 74 | Marie Goben | 17 | Daughter | Housekeeper | Illinois |
| 75 | Chelsea Goben | 14 | Daughter | — | Illinois |
| 76 | Fay Goben | 13 | Daughter | — | Illinois |
| 77 | Ralph Goben | 9 | Son | — | Illinois |
| 78 | Arthur Powers | 23 | Head | Laborer | Illinois |
| 79 | Marie Powers | 20 | Wife | — | Illinois |
| 80 | Delmar Chuby | 5 | Nephue | — | Illinois |
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)