Mary Carlson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Washington-County, Minnesota

Our Model Tree links this Mary Carlson across the 1920, 1930 and 1940 US Censuses in Washington-County, Minnesota (XGBoost, ~Confirmed) — first a spouse (b.~1867), then head of a 5-person household.

Age 73 b. ~1867 Female Spouse Born: Wisconsin Married

1940 Census Record Details

Census Year	1940
Location	Washington-County, Minnesota
Surname	Carlson
Given Name	Mary A.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	73
Marital Status	Married
Birthplace	Wisconsin
1935 Residence (City)	Marine Village
1935 Residence (County)	Washington
Additional Details
Class of Worker	0
Highest Grade	Hs 4
1935 Residence	Same Place
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin
Township / Ward	Marine Village
Est. Birth Year	~1867

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 Mary	Age	Birth yr
Ronald Carlson	Other	—	6	~1934
Percy Carlson	Son	—	45	~1895
Mary Carlson	Spouse	—	73	~1867
Edna Carlson	Other	—	39	~1901
Edward Carlson	Head	—	83	~1857

Census Appearances

1920

Washington, Minnesota

Spouse, age 51

Washington, Minnesota · implied b. ~1869 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Carlson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	51
Marital Status	Married
Birthplace	Wisconsin
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Norwegian
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin

1930

Washington, Minnesota

Spouse, age 61

Washington, Minnesota · implied b. ~1869 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Carlson
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	61
Marital Status	Married
Birthplace	Wisconsin
Age at First Marriage	20
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read/Write	Yes
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin

1940

Washington-County, Minnesota

Spouse, age 73

Washington-County, Minnesota · implied b. ~1867 — 5 household members

Surname	Carlson
Given Name	Mary A.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	73
Marital Status	Married
Birthplace	Wisconsin
1935 Residence (City)	Marine Village
1935 Residence (County)	Washington
Class of Worker	0
Highest Grade	Hs 4
1935 Residence	Same Place
Birth State	Wisconsin
Birth Country	United States
Birthplace (normalized)	wisconsin

Model Tree

Linked across censuses

Our Model Tree links Mary Carlson 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 Carlson

Spouse · 1940 · age 73 · b. ~1867 · 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 — Washington-County, Minnesota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01967-00340)

Line	Name	Age	Relation	Occupation	Birthplace
1	Melinda E. Root	55	Wife	—	Minnesota
2	George R. Root	21	Son	Musician	Minnesota
3	Mark R. Root	15	Son	—	Minnesota
4	Russell W. Root	14	Son	—	Minnesota
5	Donna J. Root	12	Daughter	—	Minnesota
6	Mary A. Hellstern	73	Head	—	Minnesota
7	Anna E. Edgar	80	Head	—	Missouri
8	Daughter Marjorie A.	None	F	—	—
9	Amanda Carlson	63	Head	—	Sweden
10	Lars Lillie	90	Mother	—	Sweden
11	Harry V. Anderson	51	Head	Laborer	Minnesota
12	Blenda E. Anderson	47	Wife	—	Minnesota
13	Violet M. Anderson	13	Daughter	—	Minnesota
14	William J. Anderson	81	Father Law	—	Sweden
15	Hilda Wallander	76	Aunt	—	Sweden
16	Lawrence A. Larson	33	Head	Mechanic	Minnesota
17	Bernice E. Larson	32	Wife	—	Minnesota
18	Roger S. Larson	6	Son	—	Minnesota
19	Dale L. Larson	4	Son	—	Minnesota
20	Keith R. Larson	2	Son	—	Minnesota
21	Charles L. Stiles	55	Head	Caretaker	Wisconsin
22	Lorena E. Stiles	51	Wife	—	Wisconsin
23	Vernon L. Stiles	18	Son	Delivery Boy	Wisconsin
24	Leonard D. Stiles	16	Son	—	Wisconsin
25	Ellsworth H. Klahn	42	Head	Road Grader Operator	Minnesota
26	Helga N. Klahn	41	Wife	—	Minnesota
27	Clayton E. Klahn	22	Son	Laying Roofs	Minnesota
28	Leona M. Klahn	15	Daughter	—	Minnesota
29	Edward W. Carlson	83	Head	—	Sweden
30	Mary A. Carlson THIS PERSON	73	Wife	—	Wisconsin
31	Percy R. Carlson	45	Son	Operator	Minnesota
32	Edna A. Carlson	39	Daughter Law	—	Minnesota
33	Ronald P. Carlson	6	Grandson	—	Minnesota
34	Oscar R. Sajont	58	Head	—	Minnesota
35	Raymond O. Sajont	25	Son	Carpenter	Minnesota
36	Lila M. Sajont	21	Daughter Law	—	Canada English
37	Gus E. Peterson	65	Head	—	Sweden
38	Gertrude M. Peterson	51	Wife	—	Iowa
39	Davy L. Peterson	27	Head	Stone Mason	Minnesota
40	Caroline L. Peterson	25	Wife	—	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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