Elizabeth Cooper — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Elizabeth Cooper across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 3-person household.

Age 61 b. ~1879 Female Spouse Born: Kentucky Married

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Cooper
Given Name	Elizabeth
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	61
Marital Status	Married
Birthplace	Kentucky
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Additional Details
Income (1939)	0
Highest Grade	H 4
1935 Residence	Illinois
Birth State	Kentucky
Birth Country	United States
Birthplace (normalized)	kentucky
Township / Ward	Chicago
Est. Birth Year	~1879

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 Elizabeth	Age	Birth yr
Elizabeth Cooper	Spouse	—	61	~1879
Fern Cooper	Daughter	—	26	~1914
Alfred Cooper	Head	—	61	~1879

Census Appearances

1920

Cook, Illinois

Spouse, age 39

Cook, Illinois · implied b. ~1881 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cooper
Given Name	Elizabeth
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	39
Marital Status	Married
Birthplace	Kentucky
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Kentucky
Birth Country	United States
Birthplace (normalized)	kentucky

1930

Cook, Illinois

Spouse, age 51

Cook, Illinois · implied b. ~1879 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cooper
Given Name	Elizabeth
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	51
Marital Status	Married
Birthplace	Kentucky
Age at First Marriage	20
Father's Birthplace	Wisconsin
Mother's Birthplace	Wisconsin
Can Read/Write	Yes
Birth State	Kentucky
Birth Country	United States
Birthplace (normalized)	kentucky

1940

Cook-County, Illinois

Spouse, age 61

Cook-County, Illinois · implied b. ~1879 — 3 household members

Surname	Cooper
Given Name	Elizabeth
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	61
Marital Status	Married
Birthplace	Kentucky
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Income (1939)	0
Highest Grade	H 4
1935 Residence	Illinois
Birth State	Kentucky
Birth Country	United States
Birthplace (normalized)	kentucky

Model Tree

Linked across censuses

Our Model Tree links Elizabeth 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

Elizabeth Cooper

Spouse · 1940 · age 61 · b. ~1879 · Illinois

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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 — Cook-County, Illinois Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00933-01056)

Line	Name	Age	Relation	Occupation	Birthplace
1	Donald Lundahl	16	Son	—	Illinois
2	Edward Modrich	27	Head	Steel Worker	Illinois
3	Bertha Modrich	28	Wife	—	Michigan
4	Edward Modrich	1	Son	—	Illinois
5	Joe Modrich	23	Brother	Steel Worker	Illinois
6	Alfred Cooper	61	Head	Brick Layer	Canada
7	Elizabeth Cooper THIS PERSON	61	Wife	—	Kentucky
8	Fern Cooper	26	Daughter	Stenographer	Illinois
9	Mitchell Jamar	26	Head	Substation Attendant	Minnesota
10	Norma Jamar	23	Wife	—	Wisconsin
11	Edward Jamar	0	Son	—	Illinois
12	Henry Bush	42	Head	Switchman	Louisiana
13	Clara Bush	31	Wife	—	Illinois
14	Anthony Bush	10	Son	—	Illinois
15	Adrian Bush	1	Daughter	—	Illinois
16	Thomas Barbour	48	Head	Policeman	Illinois
17	Theresa Barbour	44	Wife	—	Illinois
18	Delia Barbour	74	Mother	—	England
19	Allen Barbour	46	Brother	File Clerk	Illinois
20	Richard Oakford	42	Head	Salesman	England
21	Mildred Oakford	39	Wife	—	Michigan
22	Mildred Oakford	17	Daughter	—	Illinois
23	Margaret Oakford	14	Daughter	—	Michigan
24	Marilyn Oakford	12	Daughter	—	Michigan
25	Carl Mosslein	43	Head	General Office	Illinois
26	Edythe Mosslein	35	Wife	—	Indiana
27	Philip Larkin	45	Head	Laborer	Illinois
28	Elizabeth Larkin	42	Wife	—	Illinois
29	Vera Larkin	16	Daughter	—	Illinois
30	Charles Plummer	57	Head	Commercial Photographer	Wisconsin
31	Edith Plummer	48	Wife	—	Indiana
32	Floretta Plummer	27	Daughter	Laboratory Assistant	Washington
33	Charles, Jr. Plummer	17	Son	Delivery	Illinois
34	William Trenwith	67	Head	Electrician	Missouri
35	Kate Trenwith	63	Wife	—	Missouri
36	Leslie Cashin	43	Head	Keeper	Missouri
37	Nellie Cashin	40	Wife	Saleslady	Illinois
38	Mary Flynn	66	Mother-in-law	—	Sweden
39	Sidney Tompkins	47	Head	Salesman	Minnesota
40	Orva Tompkins	47	Wife	—	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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