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Mattie Clark — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · King-County, Washington

Our Model Tree links this Mattie Clark across the 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 8-person household.

Age 22 b. ~1918 Female Daughter Born: Idaho Single

1940 Census Record Details

Census Year1940
LocationKing-County, Washington
SurnameClark
Given NameMattie R.
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age22
Marital StatusSingle
BirthplaceIdaho
1935 Residence (City)Maple Valley
1935 Residence (County)King
Additional Details
OccupationRetail Clerk
IndustryDept Store
Class of WorkerPW
Hours Worked48
Income (1939)185
Highest GradeH 4
1935 ResidenceSame place
Birth StateIdaho
Birth CountryUnited States
Birthplace (normalized)idaho
OccupationRetail Clerk
Township / WardMaple Valley
Est. Birth Year~1918

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.

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

Name Relation to head Relative to Mattie Age Birth yr
Cecil Clark Son — 18 ~1922
Mattie Clark Daughter — 22 ~1918
Ethel Clark Daughter — 12 ~1928
Arthur Clark Son — 17 ~1923
Leslie Clark Son — 19 ~1921
Edith Clark Daughter — 15 ~1925
Leo Clark Head — 52 ~1888
Sarah Clark Spouse — 55 ~1885

Census Appearances

1930
King, Washington
Daughter, age 12
King, Washington · implied b. ~1918 — 12 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Clark
Given Name Mattie
Relationship to Head Daughter
Sex F
Color / Race White
Age 12
Marital Status Single
Birthplace Idaho
Father's Birthplace Iowa
Mother's Birthplace Illinois
Can Read/Write Yes
Birth State Idaho
Birth Country United States
Birthplace (normalized) idaho
1940
King-County, Washington
Daughter, age 22
King-County, Washington · implied b. ~1918 — 8 household members
Surname Clark
Given Name Mattie R.
Relationship to Head Daughter
Sex F
Color / Race White
Age 22
Marital Status Single
Birthplace Idaho
1935 Residence (City) Maple Valley
1935 Residence (County) King
Occupation Retail Clerk
Industry Dept Store
Class of Worker PW
Hours Worked 48
Income (1939) 185
Highest Grade H 4
1935 Residence Same place
Birth State Idaho
Birth Country United States
Birthplace (normalized) idaho

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 Mattie Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mattie Clark
Daughter · 1940 · age 22 · b. ~1918 · Washington
★ You are viewing this record
Sibling
Edith Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Clark
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Clark
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leslie Clark
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecil Clark
Sibling · 1940 · age 18
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 — King-County, Washington Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-04343-00096)

Line Name Age Relation Occupation Birthplace
41 Ruth Elaine Williams 15 Daughter — Wash.
42 Hjalmer Spalberg 33 Head Laborer Wisconsin
43 Oline Spalberg 66 Mother — Norway
44 Ivar Strand 27 Head Laborer Norway
45 Leo L. Clark 52 Head Buckers Iowa
46 Sarah E. Clark 55 Wife — Illinois
47 Mattie R. Clark THIS PERSON 22 Daughter Retail Clerk Idaho
48 Cecil Clark 18 Son New Worker Wash.
49 Arthur Clark 17 Son — Wash.
50 Leslie H. Clark 19 Son Laborer Wash.
51 Edith L. Clark 15 Daughter — Wash.
52 Ethel S. Clark 12 Daughter — Wash.
53 Fred S. Putman 48 Head Supervisor Pennsylvania
54 Elizabeth Putman 47 Wife — Norway
55 Ruth Putman 17 Daughter — Wash.
56 Hilda Koster 50 Head — Finland
57 Alto Koster 28 Son Logger Wash.
58 Sylvia Koster 20 Daughter — Wash.
59 Everette O. Wailes 39 Head Craneman Iowa
60 Ethel C. Wailes 32 Wife — Arkansas
61 Jacqueline Wailes 11 Daughter — Cal.
62 Paul Wailes 5 Son — Cal.
63 Erick V. Moline 66 Head Farmer Sweden
64 Celia Moline 64 Wife — Sweden
65 Elmer Moline 33 Son Logger Wash.
66 Dr. George Walter 49 Head Teacher Michigan
67 Lucy E. Walter 43 Wife — North Dakota
68 Willard Walter 19 Son — Montana
69 Susie Pfister 74 In Law — Canada-Eng
70 Etta Hofmeister 50 Head Teacher Kansas
71 Aloha Gunther 24 Lodger Teacher Wash.
72 Lelia Pitman 31 Head Teacher Idaho
73 Phyllis Foss 29 Lodger Teacher So. Dakota
74 Otto E. Moose 38 Head Teacher Missouri
75 Sylvia V. Moose 34 Wife — Virginia
76 Joan A. Moose 12 Daughter — Wash.
77 Nancy A. Moose 10 Daughter — Wash.
78 Carl E. Moose 6 Son — Wash.
79 W. R. Gibbs 60 Head Millhand Minnesota
80 Amy L. Gibbs 19 Daughter — Wash.

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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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