John Mack — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Montgomery-County, Ohio

Our Model Tree links this John Mack across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Ohio (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 3-person household.

Age 71 b. ~1869 Male Head Born: Hungary Married

1940 Census Record Details

Census Year	1940
Location	Montgomery-County, Ohio
Surname	Mack
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	71
Marital Status	Married
Birthplace	Hungary
1935 Residence (City)	Harrison Twp
1935 Residence (County)	Montgomery
Naturalization Status	Alien
Additional Details
Occupation	Farmer
Industry	Own Farm
Class of Worker	OA
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Hungary
Birthplace (normalized)	hungary
Occupation	Farmer
Township / Ward	Harrison Twp
Est. Birth Year	~1869

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
Lizzie Mack	Spouse	—	64	~1876
John Mack	Head	—	71	~1869
Joseph Mack	Son	—	26	~1914

Census Appearances

1920

Montgomery, Ohio

Other, age 48

Montgomery, Ohio · implied b. ~1872 — 9 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Macko
Given Name	Jim
Relationship to Head	Roomer
Sex	M
Color / Race	White
Age	48
Marital Status	Divorced
Birthplace	Hungary
Year of Immigration	1911
Naturalization Status	Alien
Father's Birthplace	Hungary
Mother's Birthplace	Hungary
Occupation	laborer
Industry	bottle wreckers
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Hungarian
Birth Country	Hungary
Birthplace (normalized)	hungary

1930

Montgomery, Ohio

Head, age 60

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

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mack
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	60
Marital Status	Married
Birthplace	Hungary
Naturalization Status	Alien
Year of Immigration	1906
Age at First Marriage	25
Father's Birthplace	Hungary
Mother's Birthplace	Hungary
Occupation	Labor
Industry	Foundry
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	Magyar
Home Owned/Rented	O
Home Value / Rent	5000
Veteran	No
Birth Country	Hungary
Birthplace (normalized)	hungary

1940

Montgomery-County, Ohio

Head, age 71

Montgomery-County, Ohio · implied b. ~1869 — 3 household members

Surname	Mack
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	71
Marital Status	Married
Birthplace	Hungary
1935 Residence (City)	Harrison Twp
1935 Residence (County)	Montgomery
Naturalization Status	Alien
Occupation	Farmer
Industry	Own Farm
Class of Worker	OA
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Hungary
Birthplace (normalized)	hungary

Model Tree

Linked across censuses

Our Model Tree links John Mack 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 Mack

Head · 1940 · age 71 · b. ~1869 · 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 — Montgomery-County, Ohio Open full size

Page Contents

38 people indexed on this census page (nara:1940:m-t0627-03118-00621)

Line	Name	Age	Relation	Occupation	Birthplace
1	John Mack THIS PERSON	71	Head	Farmer	Hungary
2	Lizzie B. Mack	64	Wife	—	Hungary
3	Joseph Mack	26	Son	Roofer	Ohio
6	Edward Hohnhorst	69	Head	—	Kentucky
7	Ricka Hohnhorst	56	Wife	—	Kentucky
8	William Hohnhorst	18	Son	—	Ohio
9	Virgil Hobbs	22	Son-in-law	Burner	Ohio
10	Kathryn Hobbs	22	Daughter	Stater Winder	Ohio
11	Frank Bishop	29	Head	Proprietor	Kentucky
12	Dorothy E. Bishop	26	Wife	—	Ohio
13	Nina D. Bishop	10	Daughter	—	Ohio
14	Georgia J. Bishop	8	Daughter	—	Ohio
15	Shirley A. Bishop	5	Daughter	—	Ohio
16	James E. Bishop	4	Son	—	Ohio
17	Thomas Lee Bishop	1	Son	—	Ohio
18	David W. Bishop	0	Son	—	Ohio
19	Thelma Brown	18	Maid	Maid	Ohio
20	George E. Francis	44	Father-in-law	Manager	Ohio
21	Nina M. Francis	41	Mother-in-law	Secretary	Ohio
22	Philip Beck	63	Head	Stonemason	Ohio
23	Margaret A. Beck	61	Wife	—	Ohio
24	"Margaret E. ""Ab""" Beck	26	Daughter	—	Ohio
25	Charles R. Beck	14	Son	—	Ohio
26	Phil P. Balmert	51	Head	Brickmason	Ohio
27	Treva M. Balmert	43	Wife	—	Ohio
28	Charles Shultz	18	Son	Clerk	Ohio
29	Frank Lauferswiler	28	Boarder	Inspector	Ohio
30	Violet Lauferswiler	28	Boarder	—	Ohio
31	Harry T. Williamson	55	Head	Inspector	Ohio
32	Helen D. Williamson	55	Wife	—	Ohio
33	Janet R. Williamson	23	Daughter	Stenographer	Ohio
34	Harriet A. Williamson	19	Daughter	—	Ohio
35	Loyd Pierce	45	Head	Assembler	Ohio
36	Hazel Pierce	33	Wife	—	Ohio
37	Bethyl Pierce	17	Daughter	New Worker	Ohio
38	Josephine Pierce	11	Daughter	—	Ohio
39	Phyllis Pierce	8	Daughter	—	Ohio
40	John W. Ort	45	Head	Assembler	Ohio

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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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