Frank Cook — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Frank Cook across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Katie — first a son (b.~1893), then head of a 2-person household.

Age 47 b. ~1893 Male Son Born: Illinois Single

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Cook
Given Name	Frank A
Relationship to Head	Son
Sex	M
Color / Race	White
Age	47
Marital Status	Single
Birthplace	Illinois
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Additional Details
Occupation	Compositor
Industry	Commercial Printing
Class of Worker	PW
Hours Worked	24
Income (1939)	500
Highest Grade	No 8
1935 Residence	Same House
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois
Occupation	Compositor
Township / Ward	Chicago City
Est. Birth Year	~1893

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.

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

Name	Relation to head	Relative to Frank	Age	Birth yr
Katie Cook	Head	—	70	~1870
Frank Cook	Son	—	47	~1893

Census Appearances

1920

Cook, Illinois

Son, age 27

Cook, Illinois · implied b. ~1893 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cook
Given Name	Frank
Relationship to Head	Son
Sex	M
Color / Race	White
Age	27
Marital Status	Single
Birthplace	Illinois
Father's Birthplace	Germany
Mother's Birthplace	Germany
Occupation	Compositor
Industry	Print. Co
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1930

Cook, Illinois

Son, age 37

Cook, Illinois · implied b. ~1893 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cook
Given Name	Frank A
Relationship to Head	Son
Sex	M
Color / Race	White
Age	37
Marital Status	Single
Birthplace	Illinois
Father's Birthplace	Germany
Mother's Birthplace	Germany
Occupation	Compositor
Industry	Printing
Class of Worker	W
Can Read/Write	Yes
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1940

Cook-County, Illinois

Son, age 47

Cook-County, Illinois · implied b. ~1893 — 2 household members

Surname	Cook
Given Name	Frank A
Relationship to Head	Son
Sex	M
Color / Race	White
Age	47
Marital Status	Single
Birthplace	Illinois
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Occupation	Compositor
Industry	Commercial Printing
Class of Worker	PW
Hours Worked	24
Income (1939)	500
Highest Grade	No 8
1935 Residence	Same House
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

Model Tree

Model Tree available

Our Model Tree links Frank Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Katie Cook (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.

Show:

Gen 1 Parents confidence ≈ 0.92

Mother

Katie Cook

b. ~1870

Source mother

● Household · direct · ~0.92

This person

Anchor record

Frank Cook

Son · 1940 · age 47 · b. ~1893 · Illinois

★ You are viewing this record

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

39 people indexed on this census page (nara:1940:m-t0627-00987-00781)

Line	Name	Age	Relation	Occupation	Birthplace
1	Shirley Witz	21	Wife	—	Illinois
2	Barbara A Witz	1	Daughter	—	Illinois
3	Lewis Bernstein	47	Head	Foreman	New York
4	Louise Bernstein	50	Wife	—	Illinois
5	Fred Petersen	55	Head	Switchman	Denmark
6	Edith Petersen	56	Wife	—	Illinois
7	John Permantier	27	Head	Paymaster	Illinois
8	Geraldine Permantier	23	Wife	—	Illinois
9	Blandia Permantier	0	Daughter	—	Illinois
10	Henry Lawalski	35	Head	Shipping Clerk	Illinois
11	Theresa Lawalski	35	Wife	Labeler	Illinois
12	Doris Lawalski	18	Daughter	—	Illinois
13	Julius Suksar	33	Head	Glader	Illinois
14	Mary Suksar	34	Wife	—	Poland
15	Gloria Suksar	5	Daughter	—	Illinois
16	Bellbina Suksar	56	Mother-in-law	—	Poland
17	Adolph Elenbrieg	49	Head	Mechanical Engineer	Poland
18	Lillian Elenbrieg	50	Wife	—	Illinois
19	Blanche Elenbrieg	24	Daughter	Examiner	Illinois
20	Dorothy Elenbrieg	16	Daughter	—	Illinois
21	Walter Kodie	52	Head	Polisher	Illinois
22	Theresa Kodie	52	Wife	—	Austria
23	Marie Kodie	30	Daughter	Hat Maker	Italy
24	Michael Mikolajczak	80	Head	—	Poland
25	Lillian Mikolajczak	30	Daughter	Machine Operator	Illinois
26	Stanley Mikolajczak	40	Son	Furniture Mover	Illinois
27	Agnes Mikolajczak	40	Daughter-in-law	Wrapper	Poland
28	Katie Cook	70	Head	—	Germany
29	Frank A Cook THIS PERSON	47	Son	Compositor	Illinois
30	James Bishope	20	Head	Elevator Operator	Wisconsin
31	Ruby Bishope	23	Wife	Model	Illinois
32	Barbara Bishope	1	Daughter	—	Illinois
34	P. H. Damzog	64	Head	Guard	Germany
35	Sarah Damzog	63	Wife	—	Ireland
36	Evelyn Damzog	25	Daughter	New Worker	Illinois
37	Paul Damzog	21	Son	New Worker	Illinois
38	Irwin Brabetz	47	Head	—	Illinois
39	Mary Brabetz	40	Wife	Clerk	Illinois
40	Gene Brabetz	18	Daughter	New Worker	Illinois

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Pedigree Summary

Frank

Gen 1 · 1 parents ~0.92

Max depth 4 (1900–1950 window)

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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