Margaret Casey — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Margaret Casey across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 3-person household.

Age 46 b. ~1894 Female Spouse Born: Illinois Married

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Casey
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	46
Marital Status	Married
Birthplace	Illinois
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Additional Details
Class of Worker	0
Highest Grade	No 8
1935 Residence	Same Place
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois
Township / Ward	Chicago City
Est. Birth Year	~1894

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 Margaret	Age	Birth yr
Frank Casey	Head	—	50	~1890
Margaret Casey	Spouse	—	46	~1894
Margaret Casey	Daughter	—	20	~1920

Census Appearances

1920

Cook, Illinois

Spouse, age 25

Cook, Illinois · implied b. ~1895 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Casey
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	25
Marital Status	Married
Birthplace	Illinois
Father's Birthplace	Illinois
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1930

Cook, Illinois

Other, age 36

Cook, Illinois · implied b. ~1894 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Casey
Given Name	Margaret C.
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Illinois
Age at First Marriage	25
Father's Birthplace	Illinois
Mother's Birthplace	Free State Ireland
Occupation	none
Can Read/Write	Yes
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1940

Cook-County, Illinois

Spouse, age 46

Cook-County, Illinois · implied b. ~1894 — 3 household members

Surname	Casey
Given Name	Margaret
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	46
Marital Status	Married
Birthplace	Illinois
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Class of Worker	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 Margaret Casey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Margaret Casey

Spouse · 1940 · age 46 · b. ~1894 · 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-t0627-00952-00452)

Line	Name	Age	Relation	Occupation	Birthplace
1	Quinta, Anna Vanerio	30	Sister in law	Multigraph Op	Illinois
2	Mariani Marietti	74	Head	Office	Italy
3	Nathan Marietti	31	Son	Office	Illinois
4	Fred Klein	39	Head	Painter	Illinois
5	Edna Klein	39	Wife	—	Illinois
6	Shirley Klein	11	Daughter	—	Illinois
7	Thomas Kane	38	Head	Foreman	Illinois
8	Catherine Kane	36	Wife	—	Illinois
9	Arthur Spencer	32	Brother in law	Checker	Illinois
10	Edward Spencer	34	Brother in law	Maintenance	Illinois
11	Mary Burns	67	Head	—	Eire
12	Catherine Burns	37	Daughter	Clerical	Illinois
13	Joseph Burns	34	Son	Office Work	Illinois
14	Winnifred Burns	32	Daughter	Dictaphone Op	Illinois
15	Clarence Schroeder	36	Head	Architect	Illinois
16	Myrtle Schroeder	32	Wife	—	Illinois
17	Marilyn Schroeder	4	Daughter	—	Illinois
18	Bruce Schroeder	0	Son	—	Illinois
19	Carlton Egnat	25	Brother	Chief Clerk	Illinois
20	Isaac Strain	55	Head	Gen. Supt.	Illinois
21	Johanna Strain	48	Wife	—	Illinois
22	June Strain	18	Daughter	Stenographer	Illinois
23	Antonio De Lani	59	Head	Laborer	Italy
24	Josephine De Lani	43	Wife	—	Italy
25	Steve De Lani	21	Son	Laborer	Illinois
26	Joseph Gennaro	65	Boarder	—	Italy
27	John Alvin	32	Head	Teacher	New Jersey
28	Audrey Alvin	30	Wife	—	Indiana
29	Emmett Alvin	5	Son	—	Illinois
30	Kathleen Alvin	3	Daughter	—	Illinois
31	Rosemary Alvin	3	Daughter	—	Illinois
32	Frank F. Casey	50	Head	State Agent	Illinois
33	Margaret Casey THIS PERSON	46	Wife	—	Illinois
34	Margaret H. Casey	20	Daughter	Stenographer	Illinois
35	William Miller	33	Head	Maintenance	New York
36	Margaret Miller	26	Wife	—	Illinois
37	James Mcnally	33	Head	Insurance	Illinois
38	Florence Mcnally	29	Wife	—	Illinois
39	James Jr. Mcnally	2	Son	—	Michigan
40	Margaret Mcnally	0	Daughter	—	Illinois

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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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