John Peterson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · New-Haven-County, Connecticut

Our Model Tree links this John Peterson across the 1920, 1930 and 1940 US Censuses in New-Haven-County, Connecticut (XGBoost, ~Confirmed) — first a head (b.~1884), then head of a 5-person household.

Age 56 b. ~1884 Male Head Born: Finland Married

1940 Census Record Details

Census Year	1940
Location	New-Haven-County, Connecticut
Surname	Peterson
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	56
Marital Status	Married
Birthplace	Finland
1935 Residence (City)	Branford
1935 Residence (County)	New Haven
Naturalization Status	First papers filed
Additional Details
Occupation	Molder
Industry	Iron fittings
Class of Worker	PW
Hours Worked	40
Income (1939)	1160
Highest Grade	8
1935 Residence	Same house
Birth Country	Finland
Birthplace (normalized)	finland
Occupation	Molder
Township / Ward	Branford
Est. Birth Year	~1884

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.

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

Name	Relation to head	Relative to John	Age	Birth yr
Bertha Peterson	Daughter	—	21	~1919
Adelia Peterson	Daughter	—	27	~1913
Inez Peterson	Daughter	—	24	~1916
John Peterson	Head	—	56	~1884
Ida Peterson	Spouse	—	64	~1876

Census Appearances

1920

New Haven, …

Head, age 36

New Haven, Connecticut · implied b. ~1884 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Peterson
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Finland
Year of Immigration	1905
Naturalization Status	Alien
Father's Birthplace	Finland
Mother's Birthplace	Finland
Occupation	Iron Moulder
Industry	Foundry
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Swedish
Home Owned/Rented	O
Home Free/Mortgaged	M
Birth Country	Finland
Birthplace (normalized)	finland

1930

New Haven, …

Head, age 46

New Haven, Connecticut · implied b. ~1884 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Peterson
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	46
Marital Status	Married
Birthplace	Finland
Naturalization Status	Alien
Year of Immigration	1905
Age at First Marriage	24
Father's Birthplace	Finland
Mother's Birthplace	Finland
Occupation	moulder
Industry	iron foundry
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	Swedish
Home Owned/Rented	O
Home Value / Rent	2000
Radio Set	R
Birth Country	Finland
Birthplace (normalized)	finland

1940

New-Haven-County, Connecticut

Head, age 56

New-Haven-County, Connecticut · implied b. ~1884 — 5 household members

Surname	Peterson
Given Name	John
Relationship to Head	Head
Sex	M
Color / Race	White
Age	56
Marital Status	Married
Birthplace	Finland
1935 Residence (City)	Branford
1935 Residence (County)	New Haven
Naturalization Status	First papers filed
Occupation	Molder
Industry	Iron fittings
Class of Worker	PW
Hours Worked	40
Income (1939)	1160
Highest Grade	8
1935 Residence	Same house
Birth Country	Finland
Birthplace (normalized)	finland

Model Tree

Linked across censuses

Our Model Tree links John Peterson 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 Peterson

Head · 1940 · age 56 · b. ~1884 · Connecticut

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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 — New-Haven-County, Connecticut Open full size

Page Contents

39 people indexed on this census page (nara:1940:m-t0627-00514-00821)

Line	Name	Age	Relation	Occupation	Birthplace
41	Charlotte Stalf	10	Daughter	—	Michigan
42	William Ashworth	38	Head	Fittings Clerk	Mass
43	Christine Ashworth	35	Wife	—	Conn
44	Katherine Ashworth	12	Daughter	—	Conn
45	Iris Ashworth	5	Daughter	—	Conn
46	Arthur Erickson	30	Brother-in-law	Carpenter	Conn
47	Domenic Giordano	59	Head	Fruit Vender	Italy
48	Annie Giordano	58	Wife	—	Italy
49	Thomas Giordano	32	Son	Mach. Operator	Conn
50	John Giordano	28	Son	Laborer	Conn
51	Anthony Giordano	19	Son	Laborer	Conn
52	George Giordano	20	Son	—	Conn
53	Alfred Giordano	15	Son	—	Conn
54	C. Hobart Page	64	Head	Correspondent	Conn
55	Catherine Page	60	Wife	—	Conn
56	Lena Gladwin	67	Sister	Housework	Conn
57	Domenic Pontadibus	33	Head	Yard Foreman	Conn
58	Juanita Pontadibus	37	Wife	—	Conn
59	Klaus E. Lindeen	69	Head	—	Sweden
60	Carl E. Erickson	73	Brother-in-law	Molder	Sweden
61	Ida M. Erickson	60	Sister-in-law	—	Sweden
62	Carl O. Falk	61	Head	—	Sweden
63	Walbur N. Falk	27	Son	Dentist	N.Y.
64	Jennie Bigelow	62	Sister	—	Sweden
65	John Peterson THIS PERSON	56	Head	Molder	Finland
66	Ida Peterson	64	Wife	—	Finland
67	Adelia Peterson	27	Daughter	Typist	Finland
68	Inez Peterson	24	Daughter	Housework	Conn
69	Bertha Peterson	21	Daughter	Typist	Conn
71	Alfred Arden	32	Head	Window Decorator	N.Y.
72	Mary Arden	30	Wife	—	N.Y.
73	Clarence Buell	47	Head	Janitor	Conn
74	Hilda Buell	43	Wife	—	Conn
75	Charles E. Buell	10	Son	—	N.Y.
76	Clifford Buell	69	Father	—	Michigan
77	Nellie Buell	70	Mother	—	Conn
78	John Lamb	57	Head	Dye Maker	Finland
79	Ina Lamb	63	Wife	—	Finland
80	Eric Lamb	29	Son	Mach. Operator	Finland

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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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