Isaac Thomas — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Marion-County, Oregon

Our Model Tree links this Isaac Thomas across the 1920, 1930 and 1940 US Censuses in Marion-County, Oregon (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 3-person household.

Age 72 b. ~1868 Male Head Born: Oregon Married

1940 Census Record Details

Census Year	1940
Location	Marion-County, Oregon
Surname	Thomas
Given Name	Isaac
Relationship to Head	Head
Sex	M
Color / Race	White
Age	72
Marital Status	Married
Birthplace	Oregon
1935 Residence (City)	Silverton
1935 Residence (County)	Marion
Additional Details
Hours Worked	2
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same Place
Birth State	Oregon
Birth Country	United States
Birthplace (normalized)	oregon
Township / Ward	Silverton
Est. Birth Year	~1868

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 Isaac	Age	Birth yr
Annetta Thomas	Spouse	—	72	~1868
Isaac Thomas	Head	—	72	~1868
Mable Thomas	Daughter	—	37	~1903

Census Appearances

1920

Marion, Oregon

Head, age 52

Marion, Oregon · implied b. ~1868 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thomas
Given Name	Isadore D.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Oregon
Father's Birthplace	New York
Mother's Birthplace	New York
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Oregon
Birth Country	United States
Birthplace (normalized)	oregon

1930

Marion, Oregon

Head, age 62

Marion, Oregon · implied b. ~1868 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	THOMAS
Given Name	Isaac D.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	62
Marital Status	Married
Birthplace	Oregon
Age at First Marriage	21
Father's Birthplace	New York
Mother's Birthplace	New York
Occupation	Laborer
Industry	County road
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	6
Birth State	Oregon
Birth Country	United States
Birthplace (normalized)	oregon

1940

Marion-County, Oregon

Head, age 72

Marion-County, Oregon · implied b. ~1868 — 3 household members

Surname	Thomas
Given Name	Isaac
Relationship to Head	Head
Sex	M
Color / Race	White
Age	72
Marital Status	Married
Birthplace	Oregon
1935 Residence (City)	Silverton
1935 Residence (County)	Marion
Hours Worked	2
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same Place
Birth State	Oregon
Birth Country	United States
Birthplace (normalized)	oregon

Model Tree

Linked across censuses

Our Model Tree links Isaac Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Isaac Thomas

Head · 1940 · age 72 · b. ~1868 · Oregon

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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 — Marion-County, Oregon Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03373-00444)

Line	Name	Age	Relation	Occupation	Birthplace
41	Carrie Larson	65	Head	—	Norway
42	Elmer Holm	50	Head	Lumber Grader	Norway
43	Inga Holm	45	Wife	—	Norway
44	Carl Holm	22	Son	—	Oregon
45	Donald Holm	19	Son	Fountain Clerk	Oregon
46	Elizabeth Holm	16	Daughter	—	Oregon
47	Elmer Jr. Holm	14	Son	—	Oregon
48	Arlene Holm	8	Daughter	—	Oregon
49	John Gustavson	53	Head	Logger	Sweden
50	Daisy Gustavson	37	Wife	—	Oregon
51	William Gustavson	9	Son	—	Oregon
52	Velma Starr	5	Sister-in-law	—	Oregon
53	Andrew Lindflott	57	Head	—	Norway
54	Bertha Lindflott	73	Wife	—	Norway
55	Ella D. Russell	75	Head	—	Oregon
56	Isaac Thomas THIS PERSON	72	Head	—	Oregon
57	Annetta Thomas	72	Wife	—	Illinois
58	Mable Thomas	37	Daughter	—	Oregon
59	Erick Ryan	64	Head	Merchant	Norway
60	Leanna Ryan	52	Wife	Tailor	New York
61	Homer Smith	33	Son	—	California
62	Morris Hansen	49	Head	—	Minnesota
63	Emma Hansen	34	Wife	—	North Dakota
64	Edward Hansen	13	Son	—	North Dakota
65	James D. Johnson	49	Head	Green Chain	Wisconsin
66	Elizabeth Johnson	44	Wife	—	Oregon
67	Nels Johnson	22	Son	—	Oregon
68	Calvin Johnson	15	Son	—	Oregon
69	Lyle G. Petitt	26	Head	Tying	Illinois
70	Geraldine Petitt	26	Wife	—	Oregon
71	Sandra Lee Petitt	2	Daughter	—	Oregon
72	Hazel Rue	35	Head	—	North Dakota
73	Jacqueline Rue	5	Daughter	—	Oregon
74	Lewis Brown	27	Head	Grader	Oregon
75	Viola Brown	22	Wife	Clerk	South Dakota
76	Louis Schneider	75	Head	—	Wisconsin
77	Olga Schneider	51	Wife	—	Norway
78	Gertrude N. Lanham	15	Daughter	—	Oregon
79	Arthur Anderson	33	Head	Painter	North Dakota
80	Cecil Anderson	22	Wife	—	North Dakota

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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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