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John Day — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Queens-County, New York

Our Model Tree links this John Day across the 1920, 1930 and 1940 US Censuses in Queens-County, New York (XGBoost, ~Confirmed), with identified parents Rosemary & Frederick — first a son (b.~1917), then head of a 5-person household.

Age 23 b. ~1917 Male Son Born: New York Single

1940 Census Record Details

Census Year1940
LocationQueens-County, New York
SurnameDay
Given NameJohn
Relationship to Headson
SexM
Color / RaceWhite
Age23
Marital StatusSingle
BirthplaceNew York
1935 Residence (City)Queens Borough
1935 Residence (County)Queens
Additional Details
OccupationFireman
IndustryN.Y.C.
Class of WorkerGW
Income (1939)3100
Highest GradeH-4
1935 ResidenceSame place
Birth StateNew York
Birth CountryUnited States
Birthplace (normalized)new york
OccupationFireman
Township / WardQueens Borough
Est. Birth Year~1917

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
Rosemary Day Daughter — 33 ~1907
Geraldine Day Daughter — 31 ~1909
Rosemary Day Head — 67 ~1873
Eugene Day Son — 30 ~1910
John Day Son — 23 ~1917

Census Appearances

1920
Queens, New …
Son, age 2
Queens, New York · implied b. ~1918 — 4 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Day
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 2
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace New York
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1930
Queens, New …
Son, age 13
Queens, New York · implied b. ~1917 — 5 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Day
Given Name John E.
Relationship to Head Son
Sex M
Color / Race White
Age 13
Marital Status Single
Birthplace New York
Father's Birthplace New York
Mother's Birthplace Ohio
Occupation none
Can Read/Write Yes
Birth State New York
Birth Country United States
Birthplace (normalized) new york
1940
Queens-County, New …
Son, age 23
Queens-County, New York · implied b. ~1917 — 5 household members
Surname Day
Given Name John
Relationship to Head son
Sex M
Color / Race White
Age 23
Marital Status Single
Birthplace New York
1935 Residence (City) Queens Borough
1935 Residence (County) Queens
Occupation Fireman
Industry N.Y.C.
Class of Worker GW
Income (1939) 3100
Highest Grade H-4
1935 Residence Same place
Birth State New York
Birth Country United States
Birthplace (normalized) new york

Model Tree

An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Model Tree available
Our Model Tree links John Day across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Rosemary Day (~0.92 confidence) and father Frederick Day (~0.92 confidence) and mother Alberta Day (~0.92 confidence) and father Thomas Day (~0.92 confidence) and mother Josephine Day (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1 Parents confidence ≈ 0.92
Mother
Rosemary Day
b. ~1873
Source mother
● Household · direct · ~0.92
Father
Frederick Day
b. ~1883
Source father
● Household · direct · ~0.92
Mother
Alberta Day
b. ~1890
Source mother
● Household · direct · ~0.92
Father
Thomas Day
b. ~1891
Source father
● Household · direct · ~0.92
Mother
Josephine Day
b. ~1896
Source mother
● Household · direct · ~0.92
This person
Anchor record
John Day
Son · 1940 · age 23 · b. ~1917 · New York
★ You are viewing this record
Sibling
Rosemary Day
Sibling · 1940 · age 33
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Day
Sibling · 1940 · age 30
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Geraldine Day
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1940 US Federal Census — Queens-County, New York Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-02749-01047)

Line Name Age Relation Occupation Birthplace
1 Evelyn Breuer 21 daughter Clerk New York
2 Edward Whiteman 48 Head Policeman New York
3 Eva Whiteman 36 Wife — Europe
4 Clara Sporel 53 Head — New York
5 Myrtle Sporel 28 daughter Clerk New York
6 Edna Sporel 26 daughter Clerk New York
7 Kate Hart 62 Head — Ireland
8 Catherine Hart 30 daughter Clerk New York
9 Ellenore Galligan 27 daughter Clerk New York
10 Eileen Galligan 6 daughter — New York
11 Barbara Galligan 3 daughter — New York
12 John Galligan 33 son Clerk New York
13 Rosemary Day 67 Head — New York
14 Rosemary Day 33 daughter Clerk New York
15 Geraldine Day 31 daughter Teacher New York
16 Eugene Day 30 son Clerk New York
17 John Day THIS PERSON 23 son Fireman New York
18 Georgeanna Simonson 74 Head — New York
19 Frank Simonson 49 son — New York
20 Abraham Radetzky 56 Head Manufacturer Poland
21 Anna Radetzky 52 Wife Teacher Poland
22 Harold Radetzky 19 son — New York
23 Gerson Radetzky 12 son — New York
24 Frederick Zipfel 64 Head Civil Engineer New York
25 Marie Zipfel 47 Wife — New York
26 Frank Uhrich 72 Father — New York
27 Marie Uhrich 13 Niece — New York
28 Frank Hoffman 67 Head — New York
29 Anna Hoffman 67 Wife — New York
30 Marie Koerner 60 Sister in law — New York
31 Grenville Thom 50 Head Manager New York
32 Merle Thom 31 Wife — New York
33 Diane Thom 4 daughter — New York
34 Gail Thom 2 daughter — New York
35 Bruce Thom 15 son — New York
36 Frank Paufer 69 Head — New York
37 Anne Paufer 65 Wife — New York
38 Eugene Simonson 47 Head Retired New York
39 Ethel Simonson 50 Wife Stenog New York
40 Alice Ashman 72 Mother in law — New York

Search for John Day

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Pedigree Summary

John + 3 siblings
Gen 1 · 5 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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