John Kern — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this John Kern across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 3-person household.

Age 54 b. ~1886 Male Head Born: Austria Married

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Kern
Given Name	John
Relationship to Head	head
Sex	M
Color / Race	White
Age	54
Marital Status	Married
Birthplace	Austria
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Naturalization Status	Naturalized
Additional Details
Occupation	Coppersmith
Industry	METAL WORKS
Class of Worker	PW
Hours Worked	0
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Austria
Birthplace (normalized)	austria
Occupation	Coppersmith
Township / Ward	Chicago
Est. Birth Year	~1886

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 John	Age	Birth yr
John Kern	Son	—	20	~1920
Lena Kern	Spouse	—	48	~1892
John Kern	Head	—	54	~1886

Census Appearances

1920

Cook, Illinois

Head, age 31

Cook, Illinois · implied b. ~1889 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kern
Given Name	Joseph
Relationship to Head	Head
Sex	M
Color / Race	White
Age	31
Marital Status	Married
Birthplace	Austria
Year of Immigration	1907
Naturalization Status	First papers filed
Father's Birthplace	Austria
Mother's Birthplace	Austria
Occupation	Cabinet Maker
Industry	Furniture Co
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	German
Home Owned/Rented	R
Birth Country	Austria
Birthplace (normalized)	austria

1930

Cook, Illinois

Head, age 43

Cook, Illinois · implied b. ~1887 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Kern
Given Name	John
Relationship to Head	head
Sex	M
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Austria
Naturalization Status	Naturalized
Year of Immigration	1906
Age at First Marriage	24
Father's Birthplace	Austria
Mother's Birthplace	Austria
Occupation	Operator
Industry	Elevator
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	German
Home Owned/Rented	R
Home Value / Rent	58
Radio Set	R
Birth Country	Austria
Birthplace (normalized)	austria

1940

Cook-County, Illinois

Head, age 54

Cook-County, Illinois · implied b. ~1886 — 3 household members

Surname	Kern
Given Name	John
Relationship to Head	head
Sex	M
Color / Race	White
Age	54
Marital Status	Married
Birthplace	Austria
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Naturalization Status	Naturalized
Occupation	Coppersmith
Industry	METAL WORKS
Class of Worker	PW
Hours Worked	0
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth Country	Austria
Birthplace (normalized)	austria

Model Tree

Linked across censuses

Our Model Tree links John Kern across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

John Kern

Head · 1940 · age 54 · b. ~1886 · 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-t0627-01013-00769)

Line	Name	Age	Relation	Occupation	Birthplace
1	Othela Gregg	54	head	Seamstress	Porto Rico
2	Kate Gehrmann	71	head	—	Germany
3	Richard Burgett	35	head	Radio Work	Illinois
4	Agnes Burgett	31	wife	—	Illinois
5	Nanette Burgett	5	Daughter	—	Illinois
6	Donna Burgett	2	Daughter	—	Illinois
7	Paul Romain	50	head	Tailor	Italy
8	Mary Romain	42	wife	—	Italy
9	Lena Romain	14	Daughter	—	Illinois
10	Anna Romain	11	Daughter	—	Illinois
11	Frank Romain	6	Son	—	Illinois
12	Daniel Carlson	38	head	Mover	Sweden
13	Dagney Carlson	32	wife	—	New York
14	Daniel Carlson	6	Son	—	Illinois
15	Doris Carlson	3	Daughter	—	Illinois
16	Hulda Swanson	76	head	Seamstress	Sweden
17	Lulu Wagner	53	head	—	Illinois
18	John B Reinhardt	71	head	—	Germany
19	Mary Reinhardt	68	wife	—	Germany
20	John M Reinhardt	40	Son	Attendant	Illinois
21	Fred Reinhardt	44	head	Painter	Illinois
22	Margaret Reinhardt	44	wife	—	Illinois
23	Beryl Marble	30	head	Welder	Michigan
24	Leonora Marble	24	wife	Feeder	Illinois
25	Michael Krepple	50	head	Musician	Hungary
26	Irene Krepple	43	wife	—	Hungary
27	Michael Krepple	19	Son	—	Illinois
28	Joseph Krepple	21	Son	Shipping Clerk	Illinois
29	Thomas Chaikis	42	head	Labor	Turkey
30	Cleo Chaikis	32	wife	—	Turkey
31	James Chaikis	11	Son	—	Illinois
32	John Kern THIS PERSON	54	head	Coppersmith	Austria
33	Lena Kern	48	wife	—	Illinois
34	John Jr Kern	20	Son	—	Illinois
35	Paul Hilderbrandt	64	head	Mechanic	Germany
36	Emma Hilderbrandt	59	wife	—	Germany
37	Margaret Hilderbrandt	38	daughter	—	Germany
38	John Hilderbrandt	35	Son	Commercial Artist	Illinois
39	Olaf Englund	67	Head	Cement Worker	Sweden
40	Christine Englund	71	wife	—	Sweden

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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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