Mary Cooper — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Perry-County, Ohio

Our Model Tree links this Mary Cooper across the 1920, 1930 and 1940 US Censuses in Perry-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1876), then head of a 3-person household.

Age 64 b. ~1876 Female Spouse Born: Ohio Married

1940 Census Record Details

Census Year	1940
Location	Perry-County, Ohio
Surname	Cooper
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	64
Marital Status	Married
Birthplace	Ohio
1935 Residence (City)	Harrison Twp.
1935 Residence (County)	Perry
Additional Details
Class of Worker	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio
Township / Ward	Harrison Twp
Est. Birth Year	~1876

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 Mary	Age	Birth yr
Elmer Cooper	Head	—	68	~1872
Earl Cooper	Son	—	44	~1896
Mary Cooper	Spouse	—	64	~1876

Census Appearances

1920

Perry, Ohio

Spouse, age 43

Perry, Ohio · implied b. ~1877 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cooper
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Ohio
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1930

Perry, Ohio

Spouse, age 55

Perry, Ohio · implied b. ~1875 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cooper
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	55
Marital Status	Married
Birthplace	Ohio
Age at First Marriage	16
Father's Birthplace	Ohio
Mother's Birthplace	Ohio
Can Read/Write	Yes
Birth State	Ohio
Birth Country	United States
Birthplace (normalized)	ohio

1940

Perry-County, Ohio

Spouse, age 64

Perry-County, Ohio · implied b. ~1876 — 3 household members

Surname	Cooper
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	64
Marital Status	Married
Birthplace	Ohio
1935 Residence (City)	Harrison Twp.
1935 Residence (County)	Perry
Class of Worker	0
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 Mary Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Mary Cooper

Spouse · 1940 · age 64 · b. ~1876 · 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 — Perry-County, Ohio Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03127-00233)

Line	Name	Age	Relation	Occupation	Birthplace
1	Charles Porter	62	Head	Farmer	Ohio
2	Anna Porter	65	Sister	—	Ohio
3	Olive Porter	55	Sister	—	Ohio
4	Donald Browning	37	Head	Caster	Ohio
5	Helen Browning	37	Wife	—	Ohio
6	James Browning	17	Son	—	Ohio
7	Clyde Browning	12	Son	—	Ohio
8	Jerry Browning	4	Son	—	Ohio
9	Donna Browning	3	Daughter	—	Ohio
10	Mary Cowan	77	Mother-in-law	—	Ohio
11	Samuel Shreves	69	Head	—	Ohio
12	Albert Shreves	32	Son	—	Ohio
13	Walter Cannon	33	Head	Finisher	Ohio
14	Larna Cannon	27	Wife	Farmer	Ohio
15	Donald Cannon	8	Son	—	Ohio
16	Melvin Cannon	3	Son	—	Ohio
17	Eugene Beckwith	22	Hired Hand	Farmer	Ohio
18	Marian Noce	29	Lodger	Housekeeper	West Virginia
19	Florence Noce	9	Housekeeper's Daughter	—	Ohio
20	George Noce	5	Housekeeper's Son	—	Ohio
21	Paul Noce	2	Housekeeper's Son	—	Ohio
22	Elmer Cooper	68	Head	Farmer	Ohio
23	Mary Cooper THIS PERSON	64	Wife	—	Ohio
24	Earl Cooper	44	Son	—	Ohio
25	Walter Rider	56	Head	Salesman	Ohio
26	Daisy Rider	52	Wife	—	Ohio
27	Paul Hammer	48	Head	Kiln Setter	Ohio
28	Mary Hammer	49	Wife	—	Ohio
29	Wayne Caton	43	Head	Deputy Clerk	Ohio
30	Doris Caton	39	Wife	—	Ohio
31	Jacqueline Caton	18	Daughter	—	Ohio
32	James Caton	14	Son	—	Ohio
33	Arthur Hammer	56	Head	Miner	Ohio
34	Anna Hammer	54	Wife	—	Ohio
35	Samuel Hammer	21	Son	Decorator	Ohio
36	Ralph Elliott	54	Head	Miner	Ohio
37	Dorothy Elliott	39	Wife	Automobile Mechanic	Ohio
38	James Elliott	11	Son	—	Ohio
39	Harry Bombs	61	Head	Farmer	Ohio
40	Rolland Guy	46	Head	Farmer	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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