John Hart — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Lewis-County, Idaho

Our Model Tree links this John Hart across the 1920, 1930 and 1940 US Censuses in Lewis-County, Idaho (XGBoost, ~Confirmed) — first a head (b.~1891), then head of a 5-person household.

Age 49 b. ~1891 Male Head Born: Colorado Married

1940 Census Record Details

Census Year	1940
Location	Lewis-County, Idaho
Surname	Hart
Given Name	John H.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	49
Marital Status	Married
Birthplace	Colorado
1935 Residence (City)	Craigmont P.
1935 Residence (County)	Lewis
Additional Details
Occupation	Farmer
Industry	Farm
Class of Worker	OA
Hours Worked	40
Income (1939)	40
Highest Grade	No 8
1935 Residence	Same place
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado
Occupation	Farmer
Township / Ward	Craigmont P
Est. Birth Year	~1891

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 John	Age	Birth yr
Elizabeth Hart	Daughter	—	22	~1918
John Hart	Head	—	49	~1891
Marvin Hart	Son	—	24	~1916
Owen Hart	Son	—	25	~1915
Waneta Hart	Spouse	—	45	~1895

Census Appearances

1920

Lewis, Idaho

Head, age 28

Lewis, Idaho · implied b. ~1892 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hart
Given Name	John
Relationship to Head	head
Sex	M
Color / Race	White
Age	28
Marital Status	Married
Birthplace	Colorado
Father's Birthplace	Nebraska
Mother's Birthplace	Colorado
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	R
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1930

Lewis, Idaho

Head, age 38

Lewis, Idaho · implied b. ~1892 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hart
Given Name	John F.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	38
Marital Status	Married
Birthplace	Colorado
Age at First Marriage	23
Father's Birthplace	Iowa
Mother's Birthplace	Illinois
Occupation	Farmer
Industry	Wheat Farm
Class of Worker	O
Can Read/Write	Yes
Home Owned/Rented	O
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

1940

Lewis-County, Idaho

Head, age 49

Lewis-County, Idaho · implied b. ~1891 — 5 household members

Surname	Hart
Given Name	John H.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	49
Marital Status	Married
Birthplace	Colorado
1935 Residence (City)	Craigmont P.
1935 Residence (County)	Lewis
Occupation	Farmer
Industry	Farm
Class of Worker	OA
Hours Worked	40
Income (1939)	40
Highest Grade	No 8
1935 Residence	Same place
Birth State	Colorado
Birth Country	United States
Birthplace (normalized)	colorado

Model Tree

Linked across censuses

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

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This person

Anchor record

John Hart

Head · 1940 · age 49 · b. ~1891 · 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 — Lewis-County, Idaho Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00750-00289)

Line	Name	Age	Relation	Occupation	Birthplace
1	George W. Hudson	53	Head	Farmer	Missouri
2	Cynthia E. Hudson	42	Wife	—	Kansas
3	John H. Hart THIS PERSON	49	Head	Farmer	Colorado
4	Waneta M. Hart	45	Wife	—	Kansas
5	Owen W. Hart	25	Son	Laborer	Idaho
6	Marvin Hart	24	Son	Laborer	Idaho
7	Elizabeth A. Hart	22	Daughter	—	Idaho
8	Neil Elliott	37	Head	Farmer	Idaho
9	Maud Elliott	53	Wife	—	Idaho
10	Arnold Dutkowski	25	Hired man	Laborer	Minnesota
11	L. A. Notch	31	Head	Farmer	Minnesota
12	Alma R. Notch	27	Wife	—	Minnesota
13	Lorraine Notch	3	Daughter	—	Idaho
14	Marlene Notch	2	Daughter	—	Idaho
15	Marvin Notch	1	Son	—	Idaho
16	Wm Wilson Hill	32	Head	Laborer	Idaho
17	Jewel May Hill	32	Wife	—	Louisiana
18	Leo Wilson Hill	10	Son	—	California
19	Lorraine May Hill	8	Daughter	—	California
20	Jimmie Alan Hill	6	Son	—	Idaho
21	Gayle Olson	36	Head	Farmer	Idaho
22	Priscilla Olson	36	Wife	—	Idaho
23	Jeanne Olson	15	Daughter	—	Idaho
24	Frank Stall	39	Head	Laborer	Washington
25	Georgia Stall	28	Wife	—	Idaho
26	Alden Stall	8	Daughter	—	Idaho
27	Ray Treadwell	30	Brother-in-law	Labor	Idaho
28	W. B. Biggs	35	Head	Farmer	Idaho
29	Gayle Biggs	32	Wife	—	Idaho
30	Stanley Biggs	10	Son	—	Idaho
31	Gerald Biggs	6	Son	—	Idaho
32	Robert Biggs	5	Son	—	Idaho
33	Owen Meade	71	Head	Farmer	Iowa
34	Eva I. Meade	65	Wife	—	Kansas
35	Howard M. Pollock	38	Head	Farmer	Idaho
36	Jennie Hart Pollock	64	Wife	—	Canada English
37	Ethel Mchanley	53	Head	Farmer	Idaho
38	Carley Ed B. Mchanley	46	Partner	Farmer	Idaho
39	W. B. Mchanley	59	Lodger	Farmer	Iowa
40	Theodore O. Claushein	72	Head	Farmer	Norway

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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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