HT
Harry Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Harry Thompson across the 1910, 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Maud & William — first a head (b.~1895), then head of a 4-person household.
Age 45
b. ~1895
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Switchman |
| Industry | Telephone |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2700 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Switchman |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1895 |
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 Harry | Age | Birth yr |
|---|---|---|---|---|
| Jean Thompson | Daughter | — | 8 | ~1932 |
| Harry Thompson | Head | — | 45 | ~1895 |
| Warren Thompson | Son | — | 19 | ~1921 |
| Pearl Thompson | Spouse | — | 41 | ~1899 |
Census Appearances
1910
King, Washington
Son, age 15
King, Washington · implied b. ~1895 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
King, Washington
Head, age 24
King, Washington · implied b. ~1896
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Occupation | Teller |
| Industry | Bank |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
King, Washington
Head, age 35
King, Washington · implied b. ~1895 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Occupation | Electrician |
| Industry | Telephone Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
King-County, Washington
Head, age 45
King-County, Washington · implied b. ~1895 — 4 household members
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Switchman |
| Industry | Telephone |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2700 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 Harry Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Maud Thompson (~0.92 confidence) and father William Thompson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Maud Thompson
b. ~1864
Source mother
● Household
· direct · ~0.92
Father
William Thompson
b. ~1865
Source father
● Household
· direct · ~0.92
This person
Anchor record
Harry Thompson
Head · 1940 · age 45 · b. ~1895 · Washington
★ 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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04375-00633)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Irving Low | 20 | Head | Clerk | Washington |
| 42 | Martha Low | 18 | Wife | — | Montana |
| 43 | Archie Huson | 70 | Head | — | Washington |
| 44 | Myrtle Huson | 60 | Wife | — | Missouri |
| 45 | James Huson | 15 | Son | — | Washington |
| 47 | John P. Lutz | 33 | Head | Advertising | Colorado |
| 48 | Anna Lutz | 31 | Wife | — | Colorado |
| 49 | Joan Alice Lutz | 10 | Daughter | — | Colorado |
| 50 | Sharon Rae Lutz | 5 | Daughter | — | Washington |
| 51 | Lou A. Lutz | 67 | Mother | — | Illinois |
| 52 | Jane Hodgson | 17 | Niece | — | Washington |
| 53 | Henry Stidham | 49 | Head | Machine Maker | Kansas |
| 54 | Bernice Stidham | 47 | Wife | — | Kansas |
| 55 | Helen Stidham | 22 | Daughter | Usherette | Washington |
| 56 | Sarah Stidham | 82 | Mother | — | Maryland |
| 57 | Alice Hall | 44 | Head | Policy Writer | Illinois |
| 58 | Flora Hall | 73 | Mother | — | Norway |
| 59 | Melvin Dexter | 60 | Head | — | Illinois |
| 60 | Mary Dexter | 61 | Wife | — | Illinois |
| 61 | Richard H. Horn | 46 | Head | Supervisor | Illinois |
| 62 | Doris Horn | 41 | Wife | — | Oregon |
| 63 | Richard Jr. Horn | 16 | Son | Carrier | Oregon |
| 64 | Barbara Horn | 11 | Daughter | — | Oregon |
| 65 | Marilyn Horn | 9 | Daughter | — | Oregon |
| 66 | Lloyd Horn | 3 | Son | — | Utah |
| 67 | Violet New | 52 | Head | — | England |
| 68 | Myron Nordlund | 28 | Son | Credit Inspector | N. Dakota |
| 69 | Ruth Nordlund | 26 | Wife | — | Washington |
| 70 | Diane Nordlund | 0 | Daughter | — | Washington |
| 71 | Charles Russel | 30 | Head | Librarian | Montana |
| 72 | Bessie Russel | 60 | Mother | — | Iowa |
| 73 | Harry Thompson THIS PERSON | 45 | Head | Switchman | Illinois |
| 74 | Pearl Thompson | 41 | Wife | — | Minnesota |
| 75 | Warren Thompson | 19 | Son | — | Washington |
| 76 | Jean Thompson | 8 | Daughter | — | Washington |
| 77 | Otto Adams | 52 | Head | Tile Contractor | Germany |
| 78 | Helene Adams | 61 | Wife | — | Germany |
| 79 | Fred Peek | 28 | Head | Pipefitter Helper | Missouri |
| 80 | Ruth Peek | 22 | Wife | — | California |
Pedigree Summary
Harry
Gen 1 · 2 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)