Harry Nelson — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Harry Nelson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Christ — first a head (b.~1913), then head of a 3-person household.

Age 27 b. ~1913 Male Head Born: New Jersey Married

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Nelson
Given Name	Harry W.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	27
Marital Status	Married
Birthplace	New Jersey
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Additional Details
Occupation	Clerk
Industry	Armour Express
Class of Worker	PW
Hours Worked	72
Income (1939)	1200
Highest Grade	Hs 3
1935 Residence	Same place
Birth State	New Jersey
Birth Country	United States
Birthplace (normalized)	new jersey
Occupation	Clerk
Township / Ward	Chicago
Est. Birth Year	~1913

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 Harry	Age	Birth yr
Judith Nelson	Daughter	—	1	~1939
Harry Nelson	Head	—	27	~1913
Helen Nelson	Spouse	—	24	~1916

Census Appearances

1920

Cook, Illinois

Son, age 6

Cook, Illinois · implied b. ~1914 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Harry H.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	6
Marital Status	Single
Birthplace	New Jersey
Father's Birthplace	Denmark
Mother's Birthplace	New Jersey
Speaks English	Yes
Birth State	New Jersey
Birth Country	United States
Birthplace (normalized)	new jersey

1930

Cook, Illinois

Son, age 17

Cook, Illinois · implied b. ~1913 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Nelson
Given Name	Harry
Relationship to Head	Son
Sex	M
Color / Race	White
Age	17
Marital Status	Single
Birthplace	New Jersey
Father's Birthplace	Denmark
Mother's Birthplace	New Jersey
Occupation	Duplicator
Industry	Western Electric
Class of Worker	W
Can Read/Write	Yes
Birth State	New Jersey
Birth Country	United States
Birthplace (normalized)	new jersey

1940

Cook-County, Illinois

Head, age 27

Cook-County, Illinois · implied b. ~1913 — 3 household members

Surname	Nelson
Given Name	Harry W.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	27
Marital Status	Married
Birthplace	New Jersey
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Occupation	Clerk
Industry	Armour Express
Class of Worker	PW
Hours Worked	72
Income (1939)	1200
Highest Grade	Hs 3
1935 Residence	Same place
Birth State	New Jersey
Birth Country	United States
Birthplace (normalized)	new jersey

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Christ Nelson

b. ~1885

Source father

● Household · direct · ~0.92

This person

Anchor record

Harry Nelson

Head · 1940 · age 27 · b. ~1913 · 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

40 people indexed on this census page (nara:1940:m-t0627-00994-00799)

Line	Name	Age	Relation	Occupation	Birthplace
1	Samuel Pulford	23	Head	Stockman	Illinois
2	Marilyn Pulford	20	Wife	Elevator Operator	Illinois
3	Robert Krafthefer	30	Head	Machine Operator	Illinois
4	Angelina Krafthefer	26	Wife	Press Operator	Illinois
5	Robert Krafthefer	4	Son	—	Illinois
6	Beverly Krafthefer	1	Daughter	—	Illinois
7	Enrogene Gustafson	18	Sister-in-law	Servant	Wisconsin
8	Olaf Benson	35	Head	Laborer	Sweden
9	Ann Benson	19	Wife	—	Norway
10	Otto W. Groth	56	Head	Mechanist	Germany
11	Clara A. Groth	55	Wife	Nurse Helper	Iowa
12	Shirley Groth	22	Daughter	Stenographer	Illinois
13	Tage Carlson	43	Head	Tool And Die Maker	Sweden
14	Sigrid Carlson	37	Wife	—	Sweden
15	Ivar Erickson	20	Brother-in-law	Machinist Helper	Illinois
16	Fred Ristow	50	Head	Attendant	Illinois
17	Walter Ristow	40	Brother	Operator	Illinois
18	Jean Ristow	30	Sister-in-law	Caretaker	Yugoslavia
19	Caroline Ristow	83	Mother	—	Germany
20	Martin L. Cooke	65	Head	Supervisor	Ohio
21	Taletha Cooke	61	Wife	—	Missouri
22	Martin L. Jr. Cook	35	Head	Experimental Engineer	Illinois
23	Frances Cook	33	Wife	—	Illinois
24	Elaine Cook	9	Daughter	—	Illinois
25	Dennis Nash	47	Head	Stationary Engineer	Illinois
26	James Nash	21	Son	Attendant	Illinois
27	John Nash	15	Son	—	Illinois
28	William Nash	41	Head	Clerk	Illinois
29	Lela Nash	41	Wife	Saleslady	Illinois
30	John Westgaard	45	Head	Compressor Operator	Norway
31	Esther Westgaard	44	Wife	—	Wisconsin
32	Gordon Westgaard	21	Son	Plastic Molder Machine Operator	Wisconsin
33	Stanley Howard	42	Head	Proprietor	Canada-English
34	Gwenevere Howard	39	Wife	—	Iowa
35	Hubert Howard	17	Son	Office Clerk	Iowa
36	Stanley Jr. Howard	13	Son	—	Illinois
37	Harry W. Nelson THIS PERSON	27	Head	Clerk	New Jersey
38	Helen Nelson	24	Wife	—	Illinois
39	Judith Nelson	1	Daughter	—	Illinois
40	Carl Flink	44	Head	Laborer	Sweden

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Pedigree Summary

Harry

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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