Clara Thompson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Mountrail-County, North Dakota

Our Model Tree links this Clara Thompson across the 1920, 1930 and 1940 US Censuses in Mountrail-County, North Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1887), then head of a 3-person household.

Age 53 b. ~1887 Female Spouse Born: Minnesota Married

1940 Census Record Details

Census Year	1940
Location	Mountrail-County, North Dakota
Surname	Thompson
Given Name	Clara O
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Plaza Village
1935 Residence (County)	Mountrail
Additional Details
Highest Grade	No 5
1935 Residence	Same place
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota
Township / Ward	Plaza Village
Est. Birth Year	~1887

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 Clara	Age	Birth yr
Oscar Thompson	Head	—	55	~1885
James Thompson	Son	—	17	~1923
Clara Thompson	Spouse	—	53	~1887

Census Appearances

1920

Mountrail, North …

Spouse, age 33

Mountrail, North Dakota · implied b. ~1887 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thompson
Given Name	Clara
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	33
Marital Status	Married
Birthplace	Minnesota
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1930

Mountrail, North …

Spouse, age 43

Mountrail, North Dakota · implied b. ~1887 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Thompson
Given Name	Clara
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Minnesota
Age at First Marriage	23
Father's Birthplace	Norway
Mother's Birthplace	Norway
Can Read/Write	Yes
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1940

Mountrail-County, North …

Spouse, age 53

Mountrail-County, North Dakota · implied b. ~1887 — 3 household members

Surname	Thompson
Given Name	Clara O
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	53
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Plaza Village
1935 Residence (County)	Mountrail
Highest Grade	No 5
1935 Residence	Same place
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

Model Tree

Linked across censuses

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

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This person

Anchor record

Clara Thompson

Spouse · 1940 · age 53 · b. ~1887 · North Dakota

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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 — Mountrail-County, North Dakota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03008-00230)

Line	Name	Age	Relation	Occupation	Birthplace
1	Sherman D Auda	55	Head	Labor	Michigan
2	Clara M Auda	54	Wife	—	Michigan
3	Cleon Auda	26	Daughter	—	No Dakota
4	Arthur T Johnson	27	Head	Labor	No Dakota
5	Alice E Johnson	25	Wife	—	No Dakota
6	Donny J Johnson	4	Son	—	No Dakota
7	Sharon Johnson	0	Son	—	No Dakota
8	Mary H Reese	72	Head	—	No Dakota
9	Lars Hellingstad	61	Head	Labor	Norway
10	Randine Hellingstad	59	Wife	—	Iowa
11	Clarence Hellingstad	32	Son	Labor	No Dak
12	Lloyd Hellingstad	25	Son	Labor	No Dak
13	Olander Hellingstad	23	Son	Labor	No Dak
14	Judson W Warner	35	Head	Labor	Minnesota
15	Ragnhild C Warner	45	Wife	—	Minnesota
16	Eleanor T Warner	24	Daughter	New Worker	Minnesota
17	Eugene G Warner	16	Daughter	—	No Dakota
18	Joel W Warner	10	Son	—	No Dakota
19	Delwyn H Warner	3	Son	—	No Dakota
20	Ole C Dosseth	51	Head	Insurance	Minnesota
21	Anna Dosseth	52	Wife	—	Sweden
22	Sverre S Lund	56	Head	Labor	Norway
23	Jennie B Lund	40	Wife	—	No Dakota
24	Gwendolyn E Lund	19	Daughter	New Worker	No Dakota
25	Lucille Lund	15	Daughter	—	No Dakota
26	Etta May Lund	14	Daughter	—	No Dakota
27	Barry L Lund	5	Son	—	No Dakota
28	Nick R Heingen	55	Head	Trucking	Germany
29	Verna V Heingen	53	Wife	—	Maine
30	Florence E Heingen	15	Daughter	—	No Dakota
31	John Sether	73	Head	—	Norway
32	Annie Sether	71	Wife	—	Norway
33	Charles F Carlson	62	Head	Salesman	Minnesota
34	Agnes Carlson	58	Wife	—	Minnesota
35	Jerome E Carlson	17	Son	—	No Dakota
36	Oscar J Thompson	55	Head	Mail Carrier	Iowa
37	Clara O Thompson THIS PERSON	53	Wife	—	Minnesota
38	James O Thompson	17	Son	—	No Dakota
39	Gina Solberg	66	Head	—	Minnesota
40	Carl Z Rowe	76	Head	—	Germany

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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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