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John Slater — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Baltimore-City-County, Maryland

Our Model Tree links this John Slater across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1900), then head of a 5-person household.

Age 40 b. ~1900 Male Son Born: Maryland Single

1940 Census Record Details

Census Year1940
LocationBaltimore-City-County, Maryland
SurnameSlater
Given NameJohn
Relationship to HeadSon
SexM
Color / RaceWhite
Age40
Marital StatusSingle
BirthplaceMaryland
1935 Residence (City)Baltimore City
1935 Residence (County)Baltimore
Additional Details
OccupationMachinist
IndustrySewing Machine Co.
Class of WorkerPW
Hours Worked40
Income (1939)296
Highest GradeHs 4
1935 ResidenceSame House
Birth StateMaryland
Birth CountryUnited States
Birthplace (normalized)maryland
OccupationMachinist
Township / WardBaltimore City
Est. Birth Year~1900

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
Walter Slater Son — 42 ~1898
Norbert Slater Son — 37 ~1903
William Slater Son — 45 ~1895
Mary Slater Head — 76 ~1864
John Slater Son — 40 ~1900

Census Appearances

1930
Baltimore, Maryland
Son, age 32
Baltimore, Maryland · implied b. ~1898 — 8 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Slater
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 32
Marital Status Single
Birthplace Maryland
Father's Birthplace Maryland
Mother's Birthplace Maryland
Occupation Machinist
Industry Sewing Machine
Class of Worker W
Can Read/Write Yes
Birth State Maryland
Birth Country United States
Birthplace (normalized) maryland
1940
Baltimore-City-County, Maryland
Son, age 40
Baltimore-City-County, Maryland · implied b. ~1900 — 5 household members
Surname Slater
Given Name John
Relationship to Head Son
Sex M
Color / Race White
Age 40
Marital Status Single
Birthplace Maryland
1935 Residence (City) Baltimore City
1935 Residence (County) Baltimore
Occupation Machinist
Industry Sewing Machine Co.
Class of Worker PW
Hours Worked 40
Income (1939) 296
Highest Grade Hs 4
1935 Residence Same House
Birth State Maryland
Birth Country United States
Birthplace (normalized) maryland

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.
Linked across censuses
Our Model Tree links John Slater across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Slater
Son · 1940 · age 40 · b. ~1900 · Maryland
★ You are viewing this record
Sibling
Walter Slater
Sibling · 1940 · age 42
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norbert Slater
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Slater
Sibling · 1940 · age 45
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 — Baltimore-City-County, Maryland Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01541-00522)

Line Name Age Relation Occupation Birthplace
1 Hilda Warzbacher 46 Head — Maryland
2 Jacob E. Warzbacher 76 Mother — Maryland
3 John Mulka 27 Lodger Clerk Illinois
4 Leland Cornwall 27 Lodger Clerk Iowa
5 Mary Slater 76 Head — Maryland
6 William Slater 45 Son Printer Maryland
7 Walter Slater 42 Son Laborer Maryland
8 John Slater THIS PERSON 40 Son Machinist Maryland
9 Norbert Slater 37 Son Maintenance Man Maryland
10 Joseph F. Reitemeyer 66 Head Police Officer Maryland
11 Cora M. Reitemeyer 66 Wife — New York
12 Mary A. Shaw 71 Sister in law — England
13 Walter M. Crowther 40 Head Time Keeper Maryland
14 Emma Sommers 70 Housekeeper Housekeeper England
15 William W. Appel 44 Head Slate Roofer Maryland
16 Martha Appel 42 Wife — Maryland
17 Mildred D. Appel 17 Daughter Hairdresser Maryland
18 William W. Jr. Appel 4 Son — Maryland
19 Eugene B. Long 43 Head Pattern Maker Maryland
20 Nancy L. Long 42 Wife — Maryland
21 Eugene B. Long 18 Son Pattern Helper Maryland
22 Nancy Lee Long 9 Daughter — Maryland
23 Ralph Long 19 Brother Aircraft Mechanic Maryland
24 Raul Bozzone 39 Head Baker Argentina
25 Maria C. Bozzone 33 Wife — Italy
26 Delores L. Bozzone 9 Daughter — Maryland
27 Regina B. Kimmitt 51 Head — Maryland
28 Raymond Kimmitt 25 Son Draftsman Maryland
29 Margaret Kimmitt 22 Daughter Bookkeeper Maryland
30 Francis Kimmitt 21 Son Brewery Worker Maryland
31 Charles Kimmitt 18 Son Meat Inspector Maryland
32 Gerard Kimmitt 14 Son — Maryland
33 Otto A. Pfaff 74 Head Doorman France
34 Emma Pfaff 74 Wife — Maryland
35 Henry O. Pfaff 46 Son Laborer Maryland
36 Elizabeth Morris 52 Daughter Hat Trimmer Maryland
37 Louis A. Kromm 68 Head Harness Maker Maryland
38 Josie M. Kromm 64 Wife — Maryland
39 Donald A. Kromm 20 Son Clerk Maryland
40 Mary B. Kromm 19 Daughter — Maryland

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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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