Mary Mitchell — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Mary Mitchell across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 4-person household.

Age 43 b. ~1897 Female Spouse Born: Greece Married

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Mitchell
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Greece
1935 Residence (City)	CHICAGO
1935 Residence (County)	COOK
Naturalization Status	Naturalized
Additional Details
Occupation	Helper
Industry	Restaurant
Class of Worker	OA
Hours Worked	40
Highest Grade	No 8
1935 Residence	Same Place
Birth Country	Greece
Birthplace (normalized)	greece
Occupation	Helper
Township / Ward	Chicago
Est. Birth Year	~1897

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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
John Mitchell	Head	—	53	~1887
George Mitchell	Son	—	22	~1918
James Mitchell	Son	—	21	~1919
Mary Mitchell	Spouse	—	43	~1897

Census Appearances

1920

Cook, Illinois

Spouse, age 22

Cook, Illinois · implied b. ~1898 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mitchell
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	22
Marital Status	Married
Birthplace	Greece
Year of Immigration	1916
Naturalization Status	Alien
Father's Birthplace	Greece
Mother's Birthplace	Greece
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Greek
Birth Country	Greece
Birthplace (normalized)	greece

1930

Cook, Illinois

Other, age 34

Cook, Illinois · implied b. ~1896 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Mitchell
Given Name	Mary
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	34
Marital Status	Married
Birthplace	Greece
Age at First Marriage	W
Father's Birthplace	Greece
Mother's Birthplace	Greece
Can Read/Write	Yes
Mother Tongue	Greek
Home Owned/Rented	No
Veteran	Al
Birth Country	Greece
Birthplace (normalized)	greece

1940

Cook-County, Illinois

Spouse, age 43

Cook-County, Illinois · implied b. ~1897 — 4 household members

Surname	Mitchell
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Greece
1935 Residence (City)	CHICAGO
1935 Residence (County)	COOK
Naturalization Status	Naturalized
Occupation	Helper
Industry	Restaurant
Class of Worker	OA
Hours Worked	40
Highest Grade	No 8
1935 Residence	Same Place
Birth Country	Greece
Birthplace (normalized)	greece

Model Tree

Linked across censuses

Our Model Tree links Mary Mitchell 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 Mitchell

Spouse · 1940 · age 43 · b. ~1897 · 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-t0627-01023-00411)

Line	Name	Age	Relation	Occupation	Birthplace
41	Hollin Richardson	17	Son	Produce Clerk	Illinois
42	Joy V Richardson	15	Son	—	Illinois
43	Robert Richardson	14	Son	—	Illinois
44	Beverly Richardson	10	Daughter	—	Illinois
45	Richard Richardson	9	Son	—	Illinois
46	Roger Richardson	5	Son	—	Illinois
47	Marie Cassidy	51	Head	Typist	Illinois
48	Marie Walters	72	Mother	—	Germany
49	Alfred Fries	60	Head	Sales Representative	Germany
50	Clara Fries	58	Wife	—	Minnesota
51	Marion Fries	25	Daughter	—	Illinois
52	Virginia Fries	17	Daughter	—	Illinois
53	Reginald Sr Rix	56	Head	Ticket Collector	Illinois
54	Ella Rix	55	Wife	—	Illinois
55	Reginald Jr Rix	30	Son	Conductor	Illinois
56	Alfred Rix	19	Son	Bank Messenger	Illinois
57	Frank H Krewther	45	Head	Manager	Illinois
58	Helen Krewther	42	Wife	—	Illinois
59	Howard Krewther	15	Son	—	Illinois
60	Margaret T Krewther	14	Daughter	—	Illinois
61	Peter Klein	58	Head	Proprietor	Germany
62	Clara Klein	41	Wife	Helper	Illinois
63	James Dawson	64	Head	Boiler Fireman	Texas
64	Mary Dawson	61	Wife	—	Canada
65	Elsie Dorr	60	Head	—	Germany
66	Henry Kirk	65	Head	—	Germany
67	Ethel Kirk	29	Wife	—	Illinois
68	Arnold Kirk	3	Son	—	Illinois
69	Henry Kirk	2	Son	—	Illinois
70	Michael Speece	41	Head	Attendant	Pennsylvania
71	Ethel Speece	41	Wife	Collector	Illinois
72	Gene Speece	20	Son	Sales Lady	Illinois
73	Michael Ingber	55	Head	Gardener	Luxemburg
74	Charles Ingber	50	Wife	—	Illinois
75	Martin Ingber	23	Son	Pin Boy	Illinois
76	Dorothy Ingber	21	Wife	—	Illinois
77	John Mitchell	53	Head	Proprietor	Greece
78	Mary Mitchell THIS PERSON	43	Wife	Helper	Greece
79	George Mitchell	22	Son	Waiter	Illinois
80	James Mitchell	21	Son	Waiter	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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