John Hammond — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Miami-County, Ohio

Our Model Tree links this John Hammond across the 1920, 1930 and 1940 US Censuses in Miami-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 5-person household.

Age 70 b. ~1870 Male Head Born: Ohio Married

1940 Census Record Details

Census Year	1940
Location	Miami-County, Ohio
Surname	Hammond
Given Name	John S
Relationship to Head	Head
Sex	M
Color / Race	White
Age	70
Marital Status	Married
Birthplace	Ohio
1935 Residence (City)	Piqua City
1935 Residence (County)	Miami
Additional Details
Occupation	Telegrapher
Industry	Train Depot
Class of Worker	PW
Hours Worked	48
Income (1939)	1680
Highest Grade	8
1935 Residence	Same House
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio
Occupation	Telegrapher
Township / Ward	Piqua City
Est. Birth Year	~1870

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
Judy Jamison	Daughter	—	4	~1936
Rosalie Hammond	Daughter	—	25	~1915
John Hammond	Head	—	70	~1870
Anne Hammond	Other	—	6	~1934
Grace Hammond	Spouse	—	69	~1871

Census Appearances

1920

Miami, Ohio

Head, age 50

Miami, Ohio · implied b. ~1870 — 8 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hammond
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Occupation	Telegrapher
Industry	Railroad
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	O
Home Free/Mortgaged	M
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1930

Miami, Ohio

Head, age 60

Miami, Ohio · implied b. ~1870 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hammond
Given Name	John H
Relationship to Head	Head
Sex	M
Color / Race	White
Age	60
Marital Status	Married
Birthplace	Ohio
Age at First Marriage	28
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	3000
Veteran	No
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1940

Miami-County, Ohio

Head, age 70

Miami-County, Ohio · implied b. ~1870 — 5 household members

Surname	Hammond
Given Name	John S
Relationship to Head	Head
Sex	M
Color / Race	White
Age	70
Marital Status	Married
Birthplace	Ohio
1935 Residence (City)	Piqua City
1935 Residence (County)	Miami
Occupation	Telegrapher
Industry	Train Depot
Class of Worker	PW
Hours Worked	48
Income (1939)	1680
Highest Grade	8
1935 Residence	Same House
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

Model Tree

Linked across censuses

Our Model Tree links John Hammond 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 Hammond

Head · 1940 · age 70 · b. ~1870 · Ohio

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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 — Miami-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03116-00429)

Line	Name	Age	Relation	Occupation	Birthplace
1	Raymond Spelman	10	Son	—	Ohio
2	Jean L Spelman	6	Daughter	—	Ohio
3	George H Carter	42	Head	Teacher	Ohio
4	Mildred K Carter	39	Wife	—	Ohio
5	R Wendell Carter	15	Son	—	Ohio
6	Roger H Carter	7	Son	—	Ohio
7	Albert G Roach	37	Head	Assistant Manager	Ohio
8	Mary G Roach	35	Wife	—	Indiana
9	Mary Jane Roach	10	Daughter	—	Ohio
10	John L Beck	34	Head	Executive	Ohio
11	Lillian K Beck	34	Wife	—	Ohio
12	Edward J Beck	8	Son	—	Ohio
13	Tommy J Beck	5	Son	—	Ohio
14	Albert J Frost	52	Head	Caretaker	Ohio
15	Charity R Frost	52	Wife	—	Ohio
16	Raymond Landis	46	Head	Blacksmith	Ohio
17	Mary E Landis	45	Wife	—	Ohio
18	Dorothy A Landis	17	Daughter	—	Ohio
19	Betty J Landis	14	Daughter	—	Ohio
20	John A Landis	13	Son	—	Ohio
21	Juanita B Landis	10	Daughter	—	Ohio
22	Marlene J Landis	8	Daughter	—	Ohio
23	Frank C Parkey	46	Head	Tool Maker	Ohio
24	Alma G Parkey	48	Wife	—	Ohio
25	Margaret E Parkey	20	Daughter	Secretary	Ohio
26	Ida Jean H Parkey	17	Daughter	Waitress	Ohio
27	Roy C Moore	54	Head	Piano Tuner	Ohio
28	Pauline L Moore	52	Wife	Saleswoman	Ohio
29	Miriam M Moore	29	Daughter	Bookkeeper	Ohio
30	Martha J Moore	22	Daughter	Assistant Physician	Ohio
31	John S Hammond THIS PERSON	70	Head	Telegrapher	Ohio
32	Grace A Hammond	69	Wife	—	Ohio
33	Rosalie J Hammond	25	Daughter	—	Ohio
34	Anne Hammond	6	Granddaughter	—	Ohio
35	Judy Jamison	4	Daughter	—	Ohio
36	Coleman J Starkey	35	Head	Salesman	Oklahoma
37	Wilma R Starkey	33	Wife	—	Kansas
38	June R Starkey	10	Daughter	—	Colorado
39	J Coleman Starkey	8	Son	—	Kansas
40	Wilmer D Starkey	4	Son	—	Oklahoma

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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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