Mary Olson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Isanti-County, Minnesota

Our Model Tree links this Mary Olson across the 1920, 1930 and 1940 US Censuses in Isanti-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 6-person household.

Age 43 b. ~1897 Female Spouse Born: Minnesota Married

1940 Census Record Details

Census Year	1940
Location	Isanti-County, Minnesota
Surname	Olson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	R
1935 Residence (County)	Isanti
Additional Details
Income (1939)	0
Highest Grade	No 8
1935 Residence	Minnesota
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota
Township / Ward	Cambridge
Est. Birth Year	~1897

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Ralph Olson	Son	—	15	~1925
Vivian Olson	Daughter	—	21	~1919
Geraldine Olson	Daughter	—	2	~1938
Albin Olson	Head	—	48	~1892
Mary Olson	Spouse	—	43	~1897
Phyllis Olson	Daughter	—	12	~1928

Census Appearances

1920

Isanti, Minnesota

Spouse, age 23

Isanti, Minnesota · implied b. ~1897 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Olson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	23
Marital Status	Married
Birthplace	Minnesota
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1930

Isanti, Minnesota

Spouse, age 33

Isanti, Minnesota · implied b. ~1897 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Olson
Given Name	Mary
Relationship to Head	wife
Sex	F
Color / Race	White
Age	33
Marital Status	Married
Birthplace	Minnesota
Age at First Marriage	20
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Occupation	none
Can Read/Write	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1940

Isanti-County, Minnesota

Spouse, age 43

Isanti-County, Minnesota · implied b. ~1897 — 6 household members

Surname	Olson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	R
1935 Residence (County)	Isanti
Income (1939)	0
Highest Grade	No 8
1935 Residence	Minnesota
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

Model Tree

Linked across censuses

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

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This person

Anchor record

Mary Olson

Spouse · 1940 · age 43 · b. ~1897 · Minnesota

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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 — Isanti-County, Minnesota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01927-00893)

Line	Name	Age	Relation	Occupation	Birthplace
41	Margret P Holmgren	16	Step daughter	Maid	Minnesota
42	Clifford Sundquist	45	Head	Farmer	Minnesota
43	Myrtle C Sundquist	39	Wife	—	Minnesota
44	Kenneth D Sundquist	20	Son	Labour	Minnesota
45	Dellis J Sundquist	18	Son	Labour	Minnesota
46	Wendell C Sundquist	14	Son	—	Minnesota
47	James D Sundquist	7	Son	—	Minnesota
48	Arthur A Sandquist	46	Head	Farmer	Minnesota
49	Esther V Sandquist	40	Wife	—	Minnesota
50	Warren A Sandquist	17	Son	Labour	Minnesota
51	Shirley K Sandquist	11	Daughter	—	Minnesota
52	Robert Nyberg	26	Head	Electrician	Minnesota
53	Ethel L Nyberg	20	Wife	—	Minnesota
54	Richard Nyberg	24	Head	Electrician	Minnesota
55	Arline V Nyberg	22	Wife	Waitress	Minnesota
56	Albin O Olson	48	Head	Farmer	Sweden
57	Mary Olson THIS PERSON	43	Wife	—	Minnesota
58	Vivian E Olson	21	Daughter	—	Minnesota
59	Ralph P Olson	15	Son	Labour	Minnesota
60	Phyllis M Olson	12	Daughter	—	Minnesota
61	Geraldine A Olson	2	Daughter	—	Minnesota
62	Edward W Larson	45	Head	Farmer	Michigan
63	Magda O Larson	39	Wife	—	Sweden
64	Arnold W Larson	16	Son	—	Minnesota
65	Levonne J Larson	12	Daughter	—	Minnesota
66	Ernest Rapp	59	Head	—	Minnesota
67	Wilmar W Berglund	28	Head	Truck Driver	Minnesota
68	Esther C Berglund	25	Wife	—	Minnesota
69	Simonie W Berglund	3	Son	—	Minnesota
70	Gerald W Berglund	1	Son	—	Minnesota
71	Emil V Lundberg	62	Head	Farmer	Minnesota
72	Millie E Lundberg	57	Wife	—	Minnesota
73	Arvid E Berg	75	Brother in law	—	Minnesota
74	Arthur H Goldbloom	52	Head	Farmer	Illinois
75	Minerva M Goldbloom	45	Wife	—	Minnesota
76	James A Goldbloom	12	Son	—	Minnesota
77	Robert F Mollison	43	Head	Night Watch	Iowa
78	Virginia L Mollison	40	Wife	—	Minnesota
79	Robert Bergman	42	Head	Farmer	Minnesota
80	Rueben L Bergman	33	Brother	Labour	Minnesota

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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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