Mary Casey — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Cook, Illinois

Our Model Tree links this Mary Casey across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 3-person household.

Age 55 b. ~1875 Female Head Born: Illinois Widowed

1930 Census Record Details

Census Year	1930
Location	Cook, Illinois
Surname	Casey
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	55
Marital Status	Widowed
Birthplace	Illinois
Age at First Marriage	28
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Additional Details
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	55
Radio Set	R
Veteran	No
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois
Township / Ward	Chicago City
Est. Birth Year	~1875

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 1930 census.

Name	Relation to head	Relative to Mary	Age	Birth yr
Norma Casey	Daughter	—	29	~1901
Mary Casey	Daughter	—	27	~1903
Mary Casey	Head	—	55	~1875

Census Appearances

1920

Cook, Illinois

Head, age 44

Cook, Illinois · implied b. ~1876 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Casey
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	44
Marital Status	Widowed
Birthplace	Illinois
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	R
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1930

Cook, Illinois

Head, age 55

Cook, Illinois · implied b. ~1875 — 3 household members

Surname	Casey
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	White
Age	55
Marital Status	Widowed
Birthplace	Illinois
Age at First Marriage	28
Father's Birthplace	Ireland
Mother's Birthplace	Ireland
Can Read/Write	Yes
Home Owned/Rented	R
Home Value / Rent	55
Radio Set	R
Veteran	No
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1940

Cook-County, Illinois

Other, age 67

Cook-County, Illinois · implied b. ~1873 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Casey
Given Name	Mary A.
Relationship to Head	Cousin
Sex	F
Color / Race	White
Age	67
Marital Status	Widowed
Birthplace	Illinois
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
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 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

Mary Casey

Head · 1930 · age 55 · b. ~1875 · Illinois

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1930 US Federal Census — Cook, Illinois Open full size

Page Contents

50 people indexed on this census page (ia:1930:illinoiscensus00reel460:0395)

Line	Name	Age	Relation	Occupation	Birthplace
1	David L Burgess	49	Head	Chauffeur	Illinois
2	Mary P Burgess	42	Wife	—	Illinois
3	Robert C Burgess	17	Daughter	Stenographer	Nebraska
4	David F Burgess	16	Son	—	Nebraska
5	Ellen M Flanigan	67	Head	—	Illinois
6	Richard Flanigan	39	Son	Lawyer	Illinois
7	Thomas J Flanigan	37	Son	Salesman	Illinois
8	Gordon V Holland	38	Head	Clerk	North Carolina
9	Elsie R Holland	35	Wife	—	Illinois
10	Byron Backus	59	Head	Head Stationary	Wisconsin
11	Bessie Backus	57	Wife	—	Wisconsin
12	Daniel M Backus	27	Son	Proof Reader	Illinois
13	Idell E Elliott	40	Head	—	Minnesota
14	Theodore Elliott	45	Roomer	Painter	California
15	Ingrid Jensen	21	Roomer	Carpenter	Ohio
16	Eva Wollensworth	61	Head	—	Ohio
17	Guy Wollensworth	43	Son	Starter	Indiana
18	Marguerite Burwell	35	Daughter	Clerk	Indiana
19	John C Coon	45	Roomer	Salesman	Illinois
20	George Mens	27	Head	Chauffeur	Illinois
21	Irene Mens	33	Wife	Factory Worker	Nebraska
22	Ray E Barber	37	Head	Chauffeur	Tennessee
23	Eva Barber	28	Wife	—	Nebraska
24	E Barber	2	Daughter	—	Illinois
25	Frances Andleak	45	Mother-in-law	Waitress	Poland
26	Anna Vaskell	50	Head	—	New York
27	Elizabeth H Vaskell	26	Daughter	Dressmaker	Wisconsin
28	Gustave Jungmann	60	Roomer	Moulder	Germany
29	Evan W Mansfield	69	Head	Chemist	Kentucky
30	Emma V Mansfield	45	Wife	—	Illinois
31	Anna Mcgrath	42	Roomer	Clerk	Ireland
32	Jack Mrs Mcgrath	49	Head	Nurse	Illinois
33	Julia Ingalls	46	Roomer	Waitress	Illinois
34	Frank H Lifton	55	Head	Sheet Metal	Illinois
35	Catherine M Lifton	51	Wife	—	Illinois
36	Mary E Lifton	24	Daughter	—	Illinois
37	Esther J Lifton	16	Daughter	—	Illinois
38	David E Noonan	70	Head	Feeder	Illinois
39	Mary A Noonan	57	Wife	Dressmaking	Canada
40	Mary Casey THIS PERSON	55	Head	—	Illinois
41	Norma Casey	29	Daughter	Clerk	Illinois
42	Mary Casey	27	Daughter	Typist	Illinois
43	Nora Mcnulty	70	Head	—	Illinois
44	John D Mcnulty	27	Son	Clerical	Illinois
45	Lillian Mcnulty	25	Daughter	—	Illinois
46	Thomas Lynch	40	Roomer	Conductor	Ireland
47	Gust Carlson	50	Head	Janitor	Sweden
48	Anna Carlson	45	Wife	—	Sweden
49	Steve Carlson	23	Son	Laborer	Sweden
50	Bernard Carlson	18	Son	Checking	Illinois

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1930 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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