John Hardy — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Johnson-County, Iowa

Our Model Tree links this John Hardy across the 1920, 1930 and 1940 US Censuses in Johnson-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1855), then head of a 3-person household.

Age 85 b. ~1855 Male Head Born: New York Married

1940 Census Record Details

Census Year	1940
Location	Johnson-County, Iowa
Surname	Hardy
Given Name	John H
Relationship to Head	Head
Sex	M
Color / Race	White
Age	85
Marital Status	Married
Birthplace	New York
1935 Residence (City)	Oxford Town
1935 Residence (County)	Johnson
Additional Details
Income (1939)	0
Highest Grade	H 3
1935 Residence	Same House
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Township / Ward	Oxford Town
Est. Birth Year	~1855

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 John	Age	Birth yr
John Hardy	Head	—	85	~1855
Clarence Hardy	Son	—	59	~1881
Dora Hardy	Spouse	—	81	~1859

Census Appearances

1920

Johnson, Iowa

Head, age 65

Johnson, Iowa · implied b. ~1855 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hardy
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	65
Marital Status	Married
Birthplace	New York
Father's Birthplace	England
Mother's Birthplace	England
Occupation	Laborer
Industry	By Day
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	O
Home Free/Mortgaged	F
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Johnson, Iowa

Head, age 75

Johnson, Iowa · implied b. ~1855 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hardy
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	75
Marital Status	Married
Birthplace	New York
Age at First Marriage	23
Father's Birthplace	England
Mother's Birthplace	England
Occupation	Laborer
Industry	Odd jobs
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	800
Veteran	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1940

Johnson-County, Iowa

Head, age 85

Johnson-County, Iowa · implied b. ~1855 — 3 household members

Surname	Hardy
Given Name	John H
Relationship to Head	Head
Sex	M
Color / Race	White
Age	85
Marital Status	Married
Birthplace	New York
1935 Residence (City)	Oxford Town
1935 Residence (County)	Johnson
Income (1939)	0
Highest Grade	H 3
1935 Residence	Same House
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

Our Model Tree links John Hardy 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 Hardy

Head · 1940 · age 85 · b. ~1855 · Iowa

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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 — Johnson-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01171-00780)

Line	Name	Age	Relation	Occupation	Birthplace
1	John L Kinney	55	Head	Proprietor	Iowa
2	Amelia L Kinney	53	Wife	—	California
3	Lewis E Wallace	71	Head	—	Iowa
4	Peter H Hau	47	Head	—	Iowa
5	Jennie Hau	45	Wife	—	Nebraska
6	James E Barry	75	Head	—	Nebraska
7	Margaret E Barry	71	Wife	—	Iowa
8	William E Taylor	50	Head	Plasterer	Iowa
9	Minnie W Taylor	45	Wife	—	Iowa
10	Thelma L Taylor	22	Daughter	Teacher	Iowa
11	James A Duffy	44	Head	Salesman	Iowa
12	Sarah C Duffy	42	Wife	—	Iowa
13	Frank J Scanlon	74	Head	Proprietor	New York
14	Elizabeth Scanlon	74	Wife	—	Iowa
15	John H Hardy THIS PERSON	85	Head	—	New York
16	Dora S Hardy	81	Wife	—	Iowa
17	Clarence S Hardy	59	Son	Laborer	Iowa
18	Floyd D Edwards	37	Head	Proprietor	Iowa
19	Nellie C Edwards	34	Wife	—	Louisiana
20	Nadine L Edwards	10	Daughter	—	Iowa
21	Irene J Edwards	9	Daughter	—	Iowa
22	Eugene L Edwards	7	Son	—	Iowa
23	Ellen L Edwards	5	Son	—	Iowa
24	Fred J Beck	75	Head	Plasterer	Iowa
25	Clarence A Rohret	46	Head	Proprietor	Iowa
26	Irene E Rohret	47	Wife	Sales	Iowa
27	Regina M Rohret	18	Daughter	—	Iowa
28	Elizabeth A Rohret	15	Daughter	—	Iowa
29	Robert R Rohret	10	Son	—	Iowa
30	Philip G Klenk	46	Head	Proprietor	Iowa
31	Wiona Klenk	46	Wife	—	Iowa
32	Beth M Klenk	15	Daughter	—	Iowa
33	Mose E Baker	47	Head	Proprietor	Iowa
34	Esther R Baker	44	Wife	Attendant	Iowa
35	Hazel E Schrader	41	Head	Boarders	Iowa
36	Margaret A Schrader	19	Daughter	—	Iowa
37	Jody H Schrader	10	Daughter	—	Iowa
38	Catharine E Murrin	23	Lodger	Teacher	Iowa
39	Walter D Bonselaar	21	Lodger	Teacher	Iowa
40	Kate Mooney	65	Out of order	—	Iowa

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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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