John Hartman — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Lawrence-County, Ohio

Our Model Tree links this John Hartman across the 1920, 1930 and 1940 US Censuses in Lawrence-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 7-person household.

Age 50 b. ~1890 Male Head Born: Ohio Married

1940 Census Record Details

Census Year	1940
Location	Lawrence-County, Ohio
Surname	Hartman
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Ohio
1935 Residence (City)	Ironton City
1935 Residence (County)	Lawrence
Additional Details
Occupation	foreman
Industry	Stove Plant
Class of Worker	PW
Hours Worked	16
Income (1939)	630
Highest Grade	No 8
1935 Residence	Same place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio
Occupation	Foreman
Township / Ward	Ironton City
Est. Birth Year	~1890

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.

7 people recorded at the same address in the 1940 census.

Name	Relation to head	Relative to John	Age	Birth yr
Mary Hartman	Daughter	—	18	~1922
Helen Dilley	Daughter	—	21	~1919
John Hartman	Head	—	50	~1890
Thomas Dilley	Other	—	25	~1915
John Dilley	Other	—	1	~1939
Richard Dilley	Other	—	3	~1937
Bessie Hartman	Spouse	—	45	~1895

Census Appearances

1920

Lawrence, Ohio

Head, age 29

Lawrence, Ohio · implied b. ~1891 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hartman
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Occupation	Laborer
Industry	Engine Plant
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

Lawrence, Ohio

Head, age 40

Lawrence, Ohio · implied b. ~1890 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hartman
Given Name	John S.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Ohio
Age at First Marriage	22
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Occupation	Laborer
Industry	Engine Plant
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	6000
Radio Set	R
Veteran	No
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1940

Lawrence-County, Ohio

Head, age 50

Lawrence-County, Ohio · implied b. ~1890 — 7 household members

Surname	Hartman
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Ohio
1935 Residence (City)	Ironton City
1935 Residence (County)	Lawrence
Occupation	foreman
Industry	Stove Plant
Class of Worker	PW
Hours Worked	16
Income (1939)	630
Highest Grade	No 8
1935 Residence	Same place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

Model Tree

Linked across censuses

Our Model Tree links John Hartman 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 Hartman

Head · 1940 · age 50 · b. ~1890 · 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 — Lawrence-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03096-00462)

Line	Name	Age	Relation	Occupation	Birthplace
1	Hampton Hickman	12	Son	—	Ohio
2	Jack Hickman	10	Son	—	Ohio
3	Tommy Hickman	8	Son	—	Ohio
4	Inez Francis	4	Grand daughter	—	Ohio
5	John Hartman THIS PERSON	50	Head	Foreman	Ohio
6	Bessie Hartman	45	Wife	—	Ohio
7	Thomas R. Jr. Dilley	25	Son-in-law	Enameler	Ohio
8	Helen Dilley	21	Daughter	—	Ohio
9	Mary Ellen Hartman	18	Daughter	Copy Work	Ohio
10	Richard Lee Dilley	3	Grand-son	—	Ohio
11	John Thomas Dilley	1	Grand-son	—	Ohio
12	Thomas Blair	34	Head	Grinder	Ohio
13	Lena Blair	27	Wife	—	Kentucky
14	John Francis	35	Head	Owner	Ohio
15	Oma Francis	31	Wife	—	Kentucky
16	R. V. Dickisson	50	Head	Service Manager	Kentucky
17	Bessie Dickisson	46	Wife	—	Ohio
18	Bernard Mcmackin	46	Head	Scaler	Ohio
19	Mary Mcmackin	58	Sister	—	Ohio
20	Lucy Mcmackin	41	Sister	Die Out	Ohio
21	Mabel Mcmackin	39	Sister	Repairer	Ohio
22	Oscar Mcmackin	36	Brother	Machine Operator	Ohio
23	Howard Fletcher	53	Head	Steel Worker	Ohio
24	Zoe Fletcher	23	Wife	Barber	Ohio
25	June Fletcher	16	Daughter	—	Ohio
26	Henry C. Smith	79	Father-in-law	—	Ohio
27	Charles Mader	56	Head	Truck Driver	Ohio
28	Florence Mader	55	Wife	—	Ohio
29	Herbert Mader	22	Son	Laborer	Ohio
30	Emerson Mader	18	Son	—	Ohio
31	Harold Mader	14	Son	—	Ohio
32	Nora D. Lycan	59	Head	Manager-Owner	Ohio
33	Graydon Boyd	38	Head	Probation Officer	Ohio
34	Zorkina Boyd	39	Wife	—	Ohio
35	Clyde Boyd	13	Son	—	Ohio
36	Allen Eugene Boyd	10	Son	—	Ohio
37	Vesta Sisler	42	Sister-in-law	Teacher	Ohio
38	Rita Sisler	70	Mother-in-law	—	Ohio
39	L. T. Lowe	49	Head	Machinist	Kentucky
40	Inez Lowe	47	Wife	—	West Virginia

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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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