Mary Cooper — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Vigo-County, Indiana

Our Model Tree links this Mary Cooper across the 1920, 1930 and 1940 US Censuses in Vigo-County, Indiana (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 2-person household.

Age 72 b. ~1868 Female Head Born: Illinois Widowed

1940 Census Record Details

Census Year	1940
Location	Vigo-County, Indiana
Surname	Cooper
Given Name	Mary E.
Relationship to Head	Head
Sex	F
Color / Race	White
Age	72
Marital Status	Widowed
Birthplace	Illinois
1935 Residence (City)	Terre Haute city
1935 Residence (County)	Vigo
Additional Details
Class of Worker	0
Hours Worked	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois
Township / Ward	Terre Haute City
Est. Birth Year	~1868

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Mary Cooper	Head	—	72	~1868
Clyde Cooper	Son	—	44	~1896

Census Appearances

1920

Vigo, Indiana

Spouse, age 52

Vigo, Indiana · implied b. ~1868 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cooper
Given Name	Mary E.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	52
Marital Status	Married
Birthplace	Illinois
Father's Birthplace	Indiana
Mother's Birthplace	Indiana
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1930

Vigo, Indiana

Head, age 62

Vigo, Indiana · implied b. ~1868 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cooper
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	62
Marital Status	Widowed
Birthplace	Illinois
Father's Birthplace	Indiana
Mother's Birthplace	Indiana
Occupation	Mistress
Industry	Restaurant
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	10.00
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1940

Vigo-County, Indiana

Head, age 72

Vigo-County, Indiana · implied b. ~1868 — 2 household members

Surname	Cooper
Given Name	Mary E.
Relationship to Head	Head
Sex	F
Color / Race	White
Age	72
Marital Status	Widowed
Birthplace	Illinois
1935 Residence (City)	Terre Haute city
1935 Residence (County)	Vigo
Class of Worker	0
Hours Worked	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

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

Head · 1940 · age 72 · b. ~1868 · Indiana

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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 — Vigo-County, Indiana Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01104-00374)

Line	Name	Age	Relation	Occupation	Birthplace
1	Andrew Irwin	77	Head	—	Ohio
2	Josephine Irwin	65	Wife	—	Indiana
3	Alice Butler	35	Lodger	Waitress	Indiana
4	Lucille Devers	26	Lodger	Laundry Worker	Indiana
5	Irene E. Williams	19	Lodger	Laundry Worker	Indiana
6	Margaret Mcvey	19	Lodger	Utility Worker	Indiana
7	William H. Dale	73	Head	—	Indiana
8	Lena May Dale	63	Wife	—	Illinois
9	Mary Ella Cade	68	Mother-in-law	—	Illinois
10	Lucy Day	57	Head	—	Kentucky
11	Eugene M. Day	32	Son	Coal Miner	Tennessee
12	Bonnie M. Day	20	Daughter	—	Indiana
13	Clarence N. Day	17	Son	New Worker	Indiana
14	Clara Hembree	47	Sister	—	Kentucky
15	Everett E. Otto	29	Head	Laborer	Indiana
16	Violet M. Otto	25	Wife	—	Indiana
17	Joan J. Otto	4	Daughter	—	Indiana
18	Ed. Jump	54	Head	Laborer	Kentucky
19	Eva M. Jump	33	Wife	—	Indiana
20	Irene M. Lyons	22	Head	Laundry Worker	Indiana
21	Virgil E. Lyons	3	Son	—	Indiana
22	Arthur E. Sheppard	33	Lodger	Music Teacher	England
23	August S. Wehmeyer	62	Lodger	Laborer	Indiana
24	Mary E. Cooper THIS PERSON	72	Head	—	Illinois
25	Clyde G. Cooper	44	Son	Caretaker	Indiana
26	Ruth E. La Follette	22	Head	Olive Packer	Indiana
27	Dwayne M. Vonderschmitt	28	Head	Clerk	Indiana
28	Doris L. Vonderschmitt	20	Wife	—	Indiana
29	Sharon L. Vonderschmitt	3	Daughter	—	Indiana
30	Wayne E. Stewart	31	Head	Truck Driver	Indiana
31	Minerva Stewart	27	Wife	Garden Worker	Indiana
32	Wanda R. Stewart	7	Daughter	—	Indiana
33	Ida Rosenblum	40	Head	Book Keeper	Indiana
34	Mary Jerome	39	Head	Clerk	Indiana
35	Eva Joan Jerome	12	Daughter	—	Oklahoma
36	Mabel L. Owen	39	Head	Saleslady	Illinois
37	Thelma Barbee	18	Lodger	Waitress	Illinois
38	Margaret Price	50	Head	Maid	Indiana
39	Helen R. Price	16	Daughter	New Worker	Indiana
40	Charles Squire	60	Lodger	Foreman	Indiana

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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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