Jack Thompson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · King-County, Washington

Our Model Tree links this Jack Thompson across the 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a son (b.~1918), then head of a 5-person household.

Age 22 b. ~1918 Male Son Born: Washington Single

1940 Census Record Details

Census Year	1940
Location	King-County, Washington
Surname	Thompson
Given Name	Jack
Relationship to Head	Son
Sex	M
Color / Race	White
Age	22
Marital Status	Single
Birthplace	Washington
1935 Residence (City)	Seattle City
1935 Residence (County)	King
Additional Details
Occupation	salesman and repair man
Industry	boat mart
Class of Worker	PW
Hours Worked	48
Income (1939)	600
Highest Grade	Hs 4
1935 Residence	Same house
Birth State	Washington
Birth Country	United States
Birthplace (normalized)	washington
Occupation	Salesman And Repair Man
Township / Ward	Seattle City
Est. Birth Year	~1918

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.

5 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to Jack	Age	Birth yr
James Thompson	Son	—	23	~1917
Nella Thompson	Spouse	—	48	~1892
Richard Thompson	Son	—	20	~1920
Louis Thompson	Head	—	51	~1889
Jack Thompson	Son	—	22	~1918

Census Appearances

1930

King, Washington

Son, age 12

King, Washington · implied b. ~1918 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thompson
Given Name	Jack L.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	12
Marital Status	Single
Birthplace	Washington
Father's Birthplace	Canada-English
Mother's Birthplace	Washington
Occupation	none
Can Read/Write	Yes
Birth State	Washington
Birth Country	United States
Birthplace (normalized)	washington

1940

King-County, Washington

Son, age 22

King-County, Washington · implied b. ~1918 — 5 household members

Surname	Thompson
Given Name	Jack
Relationship to Head	Son
Sex	M
Color / Race	White
Age	22
Marital Status	Single
Birthplace	Washington
1935 Residence (City)	Seattle City
1935 Residence (County)	King
Occupation	salesman and repair man
Industry	boat mart
Class of Worker	PW
Hours Worked	48
Income (1939)	600
Highest Grade	Hs 4
1935 Residence	Same house
Birth State	Washington
Birth Country	United States
Birthplace (normalized)	washington

Model Tree

Linked across censuses

Our Model Tree links Jack Thompson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Jack Thompson

Son · 1940 · age 22 · b. ~1918 · Washington

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Sibling

Richard Thompson

Sibling · 1940 · age 20

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

James Thompson

Sibling · 1940 · age 23

Source co-child of head (derived)

● Co-child · derived · ~0.88

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

Page Contents

38 people indexed on this census page (nara:1940:m-t0627-04376-00354)

Line	Name	Age	Relation	Occupation	Birthplace
1	Harold W. Larkin	32	Head	Executive	New York
2	Helen O. Larkin	30	Wife	—	New York
3	Eden Larkin	7	Daughter	—	New York
4	Carol Larkin	6	Daughter	—	New York
5	Bertha A. White	53	Head	Maid	Illinois
6	Walter S. Kruiz	46	Head	Salesman	Illinois
7	Gladys A. Kruiz	44	Wife	—	Washington
8	Donald Kruiz	11	Son	—	Washington
9	Charles W. Zike	79	Father	—	Ohio
11	Joseph R. Blunt	46	Head	Representative	Washington
12	Irene G. Blunt	37	Wife	—	Pennsylvania
13	David Blunt	11	Son	—	Washington
14	Lawrence J. Blunt	10	Son	—	Washington
15	Roger Blunt	7	Son	—	California
16	Richard Blunt	3	Son	—	Washington
17	Elizabeth Copstick	33	Maid	Maid	Washington
18	Ross H. Eadon	62	Head	General Agent	Iowa
19	Dora E. Eadon	62	Wife	—	Iowa
20	Ross P. Williams	44	Head	Executive	Ohio
21	Dorothy O. Williams	43	Wife	—	Colorado
22	Donald Williams	17	Son	—	Washington
23	Edith Williams	15	Daughter	—	Washington
24	Carol Williams	13	Daughter	—	Washington
25	Ross Williams	12	Son	—	Washington
26	Joan Williams	6	Daughter	—	Washington
27	Louis W. Thompson	51	Head	Salesman	Canada-English
28	Nella R. Thompson	48	Wife	—	Washington
29	James Thompson	23	Son	Electrician	Washington
30	Jack Thompson THIS PERSON	22	Son	Salesman And Repair Man	Washington
31	Richard Thompson	20	Son	Stock Clerk	Washington
33	Earl D. Walden	44	Head	Salesman	Arizona
34	Marion O. Walden	42	Wife	—	Minnesota
35	Ann Walden	19	Daughter	Secretary	Washington
36	Mary Walden	17	Daughter	—	Minnesota
37	John Walkama	41	Head	Branch Manager	Michigan
38	Helen O. Walkama	41	Wife	—	Ohio
39	Helen Carol Walkama	0	Daughter	—	Oregon
40	Yvonne Holmes	26	Maid	Maid	Canada-English

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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)

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