Mary Frank — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Mary Frank across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 4-person household.

Age 42 b. ~1898 Female Spouse Born: Poland Married

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Frank
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	Poland
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Naturalization Status	Naturalized
Additional Details
Occupation	wrapper
Industry	Bakery
Class of Worker	PW
Hours Worked	48
Income (1939)	114
Highest Grade	No 4
1935 Residence	Same place
Birth Country	Poland
Birthplace (normalized)	poland
Occupation	Wrapper
Township / Ward	Chicago City
Est. Birth Year	~1898

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
Francis Frank	Daughter	—	17	~1923
Frank Frank	Head	—	70	~1870
John Frank	Son	—	22	~1918
Mary Frank	Spouse	—	42	~1898

Census Appearances

1920

Cook, Illinois

Spouse, age 26

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

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Frank
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	26
Marital Status	Married
Birthplace	Poland
Year of Immigration	1899
Naturalization Status	Naturalized
Father's Birthplace	Poland
Mother's Birthplace	Poland
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Polish
Birth Country	Poland
Birthplace (normalized)	poland

1930

Cook, Illinois

Spouse, age 36

Cook, Illinois · implied b. ~1894 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Franko
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Poland
Naturalization Status	Alien
Year of Immigration	1903
Age at First Marriage	16
Father's Birthplace	Poland
Mother's Birthplace	Poland
Can Read/Write	Yes
Mother Tongue	Polish
Birth Country	Poland
Birthplace (normalized)	poland

1940

Cook-County, Illinois

Spouse, age 42

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

Surname	Frank
Given Name	Mary
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	Poland
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Naturalization Status	Naturalized
Occupation	wrapper
Industry	Bakery
Class of Worker	PW
Hours Worked	48
Income (1939)	114
Highest Grade	No 4
1935 Residence	Same place
Birth Country	Poland
Birthplace (normalized)	poland

Model Tree

Linked across censuses

Our Model Tree links Mary Frank 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 Frank

Spouse · 1940 · age 42 · b. ~1898 · 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-t0627-00973-00257)

Line	Name	Age	Relation	Occupation	Birthplace
1	Anthony Kopp	59	Head	Machinist	Illinois
2	Frank Frank	70	Head	Assembler	Illinois
3	Mary Frank THIS PERSON	42	Wife	Wrapper	Poland
4	John Frank	22	Son	Sales	Illinois
5	Francis Frank	17	Daughter	Operator	Illinois
6	Michael Kubala	29	Head	Machine Operator	Illinois
7	Emily Kubala	25	Wife	—	Illinois
8	Michael Jr Kubala	2	Son	—	Illinois
9	Victoria Kubala	30	Sister	Inspecting	Illinois
10	Anthony Wojcik	52	Head	All Around	Poland
11	Helen Wojcik	43	Wife	—	Poland
12	Billie Wojcik	22	Son	Painter	Illinois
13	Helen Wojcik	20	Daughter	Mender	Illinois
14	Stella Wojcik	15	Daughter	Tabler	Illinois
15	Francis Wojcik	12	Daughter	—	Illinois
16	Lillian Wojcik	9	Daughter	—	Illinois
17	Sophie Wojcik	8	Daughter	—	Illinois
18	Frank Truncy	26	Head	Driver Operator	Illinois
19	Bernice Truncy	25	Wife	—	Illinois
20	Michael Weglarz	45	Lodger	Butler	Poland
21	Stanley Nazarzewski	79	Head	None	Poland
22	Marie Nazarzewski	59	Wife	—	Illinois
23	Nancy Nazarzewski	23	Daughter	Attendant	Illinois
24	Loretta Pawlowski	23	Head	Typist	Illinois
25	Loretta Pawlowski	5	Daughter	—	Illinois
26	William Gunther	32	Head	Truck Driver	Illinois
27	Lillian Gunther	29	Wife	—	Illinois
28	Delores Gunther	8	Daughter	—	Illinois
29	Lillian Gunther	6	Daughter	—	Illinois
30	Marilyn Gunther	5	Daughter	—	Illinois
31	Gunther	2	Daughter	—	Illinois
32	Louise Kula	57	Head	None	Poland
33	Wally Kula	34	Son	Sticker	Illinois
34	Virginia Kula	21	Daughter	Assembler	Illinois
35	Stella Mickael	26	Daughter	Assembler	Illinois
36	Bernadette Mickael	4	Daughter	—	Illinois
37	Joseph Elvord	29	Head	Roofer	Illinois
38	Ethel Elvord	25	Wife	—	Illinois
39	George Elvord	5	Son	—	Illinois
40	Edward Elvord	1	Son	—	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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