Oscar Larson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Kootenai-County, Idaho

Our Model Tree links this Oscar Larson across the 1920, 1930 and 1940 US Censuses in Kootenai-County, Idaho (XGBoost, ~Confirmed) — first a head (b.~1888), then head of a 4-person household.

Age 52 b. ~1888 Male Head Born: Sweden Married

1940 Census Record Details

Census Year	1940
Location	Kootenai-County, Idaho
Surname	Larson
Given Name	Oscar S.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Sweden
1935 Residence (City)	Rathdrum Precinct
1935 Residence (County)	Kootenai
Naturalization Status	Naturalized
Additional Details
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	60
Highest Grade	8
1935 Residence	Same place
Birth Country	Sweden
Birthplace (normalized)	sweden
Occupation	Farmer
Township / Ward	Rathdrum Precinct
Est. Birth Year	~1888

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 Oscar	Age	Birth yr
Oscar Larson	Head	—	52	~1888
Vera Larson	Spouse	—	38	~1902
Vernon Larson	Son	—	12	~1928
Roy Larson	Son	—	16	~1924

Census Appearances

1920

Kootenai, Idaho

Head, age 33

Kootenai, Idaho · implied b. ~1887

● Primary link · ~Confirmed · 1 source

XGBoost

Surname	Larson
Given Name	Oscar
Relationship to Head	Head
Sex	M
Color / Race	White
Age	33
Marital Status	Single
Birthplace	Sweden
Year of Immigration	1907
Naturalization Status	Naturalized
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Occupation	Farmer
Industry	Hay
Class of Worker	OA
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Swedish
Home Owned/Rented	O
Home Free/Mortgaged	F
Birth Country	Sweden
Birthplace (normalized)	sweden

1930

Kootenai, Idaho

Head, age 40

Kootenai, Idaho · implied b. ~1890 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Larson
Given Name	Oscar
Relationship to Head	Head
Sex	M
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Sweden
Naturalization Status	Naturalized
Year of Immigration	1905
Age at First Marriage	35
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Occupation	Farmer
Industry	General Farm
Class of Worker	OA
Can Read/Write	Yes
Mother Tongue	Swedish
Home Owned/Rented	O
Birth Country	Sweden
Birthplace (normalized)	sweden

1940

Kootenai-County, Idaho

Head, age 52

Kootenai-County, Idaho · implied b. ~1888 — 4 household members

Surname	Larson
Given Name	Oscar S.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Sweden
1935 Residence (City)	Rathdrum Precinct
1935 Residence (County)	Kootenai
Naturalization Status	Naturalized
Occupation	Farmer
Industry	Farming
Class of Worker	OA
Hours Worked	60
Highest Grade	8
1935 Residence	Same place
Birth Country	Sweden
Birthplace (normalized)	sweden

Model Tree

Linked across censuses

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

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This person

Anchor record

Oscar Larson

Head · 1940 · age 52 · b. ~1888 · Idaho

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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 — Kootenai-County, Idaho Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00748-00625)

Line	Name	Age	Relation	Occupation	Birthplace
1	Dorothy Postovit	9	daughter	—	Idaho
2	Jack Postovit	47	Head	Laborer	North Dakota
3	Clara Postovit	31	wife	Housekeeper	Texas
4	Roberta Postovit	7	daughter	—	Texas
5	Edward A. Barker	64	Head	Woodsman	Kansas
6	James A. Barker	22	son	Woodsman	Washington
7	Frank S. Nelson	57	Head	Farmer	Sweden
8	Adella Nelson	41	wife	Housekeeper	Wisconsin
9	Frank Jr. Nelson	11	son	—	Idaho
10	John Nelson	9	son	—	Idaho
11	Vignee Nelson	7	daughter	—	Idaho
12	Arlo A. Howell	47	Head	Laborer	Idaho
13	Grace Howell	41	wife	Housekeeper	South Dakota
14	Mamie Elliott	41	Head	Timekeeper	South Dakota
15	Lama Elliott	26	daughter	Housekeeper	South Dakota
16	Robert Elliott	14	brother	—	South Dakota
17	Fred Landin	64	Head	Farmer	Sweden
18	Selma Landin	54	wife	Housekeeper	Sweden
19	Albert Landin	20	son	Laborer	Idaho
20	Clair Landin	18	son	Laborer	Idaho
21	Oscar S. Larson THIS PERSON	52	Head	Farmer	Sweden
22	Vera Larson	38	wife	Housekeeper	Illinois
23	Roy Larson	16	son	—	Idaho
24	Vernon Larson	12	son	—	Idaho
25	Theodore Sylte	57	Head	Farmer	Minnesota
26	Gena Sylte	52	wife	Housekeeper	Minnesota
27	Chester Sylte	21	son	—	Montana
28	Vernon Sylte	20	son	Farmer	Minnesota
29	Orville Sylte	30	son	Housekeeper	Minnesota
30	Viola Sylte	28	daughter-in-law	—	South Dakota
31	Harley Sylte	4	grandson	—	South Dakota
32	Glenn Sylte	1	grandson	—	Idaho
33	John Sylte	21	Head	Farmer	Minnesota
34	Evelyn Sylte	25	wife	Housekeeper	South Dakota
35	Joan Sylte	1	daughter	—	Idaho
36	George Lamb	28	Head	Farmer	Washington
37	Barbara Lamb	23	wife	Housekeeper	Idaho
38	Donald Lamb	4	son	—	Idaho
39	Samuel A. Weaver	79	Head	Farmer	Ohio
40	Clara La Hair	65	Housekeeper	Housekeeper	Wisconsin

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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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