Grace Johnson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Grace Johnson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1898), then head of a 3-person household.

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

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Johnson
Given Name	Grace
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	Illinois
1935 Residence (City)	Palatine T.
1935 Residence (County)	Cook
Additional Details
Hours Worked	0
Highest Grade	H-4
1935 Residence	Same place
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois
Township / Ward	Palatine T
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.

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

Name	Relation to head	Relative to Grace	Age	Birth yr
Frank Johnson	Head	—	46	~1894
Robert Johnson	Son	—	22	~1918
Grace Johnson	Spouse	—	42	~1898

Census Appearances

1920

Cook, Illinois

Spouse, age 21

Cook, Illinois · implied b. ~1899 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Grace
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	21
Marital Status	Married
Birthplace	Illinois
Father's Birthplace	Illinois
Mother's Birthplace	Illinois
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1930

Cook, Illinois

Spouse, age 32

Cook, Illinois · implied b. ~1898 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Grace
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Illinois
Age at First Marriage	20
Father's Birthplace	New York
Mother's Birthplace	Illinois
Can Read/Write	Yes
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

1940

Cook-County, Illinois

Spouse, age 42

Cook-County, Illinois · implied b. ~1898 — 3 household members

Surname	Johnson
Given Name	Grace
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	42
Marital Status	Married
Birthplace	Illinois
1935 Residence (City)	Palatine T.
1935 Residence (County)	Cook
Hours Worked	0
Highest Grade	H-4
1935 Residence	Same place
Birth State	Illinois
Birth Country	United States
Birthplace (normalized)	illinois

Model Tree

Linked across censuses

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

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This person

Anchor record

Grace Johnson

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-t0627-00786-00424)

Line	Name	Age	Relation	Occupation	Birthplace
1	Jerry Bobek	17	Son	—	Illinois
2	Byron Pettibone	35	Head	Lathe Operator	Illinois
3	Julia Pettibone	33	Wife	—	Illinois
4	Shirley Pettibone	5	Daughter	—	Illinois
5	Frank Johnson	46	Head	Machinist	Illinois
6	Grace Johnson THIS PERSON	42	Wife	—	Illinois
7	Robert Johnson	22	Son	Stock Clerk	Illinois
8	Fred Schwartz	34	Head	Carpenter	Illinois
9	Jane Schwartz	19	Wife	—	Illinois
10	Bonnie Jane Schwartz	1	Daughter	—	Illinois
11	Vicente Gamboa	50	Head	Engineering Draftsman	Mexico
12	Louella Gamboa	39	Wife	—	Kansas
13	Evan Gamboa	3	Son	—	Texas
14	Magnus Pola	35	Head	Laborer	Norway
15	Anna Pola	36	Wife	—	Norway
16	Marlene Pola	13	Daughter	—	Illinois
17	Judith Pola	11	Daughter	—	Illinois
18	Lester Pola	8	Son	—	Illinois
19	Leonard Pola	6	Son	—	Illinois
20	Valleik Gretta	44	Head	Painter	Norway
21	Tora Gretta	32	Wife	—	Norway
22	Harry Gretta	5	Son	—	Illinois
23	Marilyn Gretta	3	Daughter	—	Illinois
24	Otto Zobel	56	Head	Plumber	Germany
25	Ida Zobel	52	Wife	—	Germany
26	—	None	—	—	—
27	Otto Goltz	63	Head	Upholsterer	Illinois
28	Carrie Goltz	58	Wife	—	Illinois
29	Ruth Goltz	22	Daughter	Machine Operator	Illinois
30	Milan Frasnovik	63	Head	Watchman	Yugoslavia
31	Frank Brkovich	54	Lodger	—	Yugoslavia
32	Frank Simons	32	Head	Truck Driver	Iowa
33	Frances Simons	30	Wife	—	Kentucky
34	Joseph Simons	12	Son	—	Illinois
35	Harold Simons	9	Son	—	Illinois
36	Virginia E. Smith	63	Head	—	Missouri
37	William Jenks	73	Head	—	Germany
38	Joseph Just	44	Head	Woodworker	Austria
39	Johanna Just	40	Wife	—	Austria
40	Joe Just	12	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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