WT
Walter Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Walter Thompson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Olaf & Anna — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Thompson |
| Given Name | Walter J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Electrician |
| Industry | Refinery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1700 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Electrician |
| Township / Ward | Oak Park Village |
| Est. Birth Year | ~1909 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Walter | Age | Birth yr |
|---|---|---|---|---|
| Sandra Thompson | Daughter | — | 1 | ~1939 |
| Walter Thompson | Head | — | 31 | ~1909 |
| Mildred Thompson | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1910 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 21
Cook, Illinois · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Walter |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Electrician |
| Industry | Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 31
Cook-County, Illinois · implied b. ~1909 — 3 household members
| Surname | Thompson |
| Given Name | Walter J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Electrician |
| Industry | Refinery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1700 |
| Highest Grade | No 8 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Walter Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Olaf Thompson (~0.92 confidence) and mother Anna Thompson (~0.92 confidence) and mother Anna Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Olaf Thompson
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Anna Thompson
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Anna Thompson
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Walter Thompson
Head · 1940 · age 31 · b. ~1909 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00784-00569)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Paul Pflug | 75 | Head | — | Germany |
| 2 | Lewis Matson | 67 | Head | Yeast Manufacturer | Denmark |
| 3 | Norman S Matson | 35 | Son | Clerk | Illinois |
| 4 | Rachael Jacobsen | 70 | Sister-in-law | — | Norway |
| 5 | Alfred E Sorensen | 53 | Head | Field Advisor | Denmark |
| 6 | Anne F Sorensen | 54 | Wife | — | Illinois |
| 7 | Allen E Sorensen | 15 | Son | — | Illinois |
| 8 | Harry G. Brown | 70 | Head | Time Keeper | Washington |
| 9 | Lois Ann Brown | 21 | Wife | Clerk | Virginia |
| 10 | Lois D Brown | 1 | Daughter | — | Illinois |
| 11 | Virgil Abbott | 37 | Head | Executive | Illinois |
| 12 | Loraine Abbott | 37 | Wife | — | Illinois |
| 13 | Stuart William | 26 | Head | Salesman | Illinois |
| 14 | Fern William | 24 | Wife | Teacher | Illinois |
| 15 | Tracy Rust | 36 | Head | Superintendent | Iowa |
| 16 | Dorothy Rust | 36 | Wife | — | Massachusetts |
| 17 | James Rust | 15 | Son | — | Massachusetts |
| 18 | Enumerated On Sheet 62 B Line 53 | None | — | — | — |
| 19 | — | None | — | — | — |
| 20 | — | None | — | — | — |
| 21 | Charles Heert | 35 | Head | Spotter | Illinois |
| 22 | Mildred Heert | 30 | Wife | — | Illinois |
| 23 | Thomas Mcgovern | 46 | Head | Salesman | Illinois |
| 24 | Helen M Mcgovern | 41 | Wife | — | Illinois |
| 25 | George Mcgovern | 23 | Son | Assistant Manager | Illinois |
| 26 | Thomas F Mcgovern | 21 | Son | Clerk | Illinois |
| 27 | Audrey Mcgovern | 17 | Daughter | — | Illinois |
| 28 | John L Spear | 27 | Head | Industrial Engineer | Iowa |
| 29 | Lillian Spear | 24 | Wife | Bookkeeping Operator | South Dakota |
| 30 | Robert G Pettigrew | 40 | Head | Salesman | Canada-English |
| 31 | Leta Pettigrew | 39 | Wife | Bookkeeper | Canada-English |
| 32 | Walter J Thompson THIS PERSON | 31 | Head | Electrician | Illinois |
| 33 | Mildred Thompson | 37 | Wife | — | Illinois |
| 34 | Sandra L Thompson | 1 | Daughter | — | Illinois |
| 35 | Elmer Monsen | 46 | Head | Order Clerk | Illinois |
| 36 | Grace S Monsen | 44 | Wife | — | Illinois |
| 37 | Elmer J Monsen | 21 | Son | — | Illinois |
| 38 | Robert Monsen | 18 | Son | — | Illinois |
| 39 | William Monsen | 10 | Son | — | Illinois |
| 40 | Leslie E Meyer | 47 | Head | Mechanical Engineer | Illinois |
Pedigree Summary
Walter
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)