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Joyce Smith — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Black-Hawk-County, Iowa

Our Model Tree links this Joyce Smith across the 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.

Age 12 b. ~1928 Female Daughter Born: Iowa Single

1940 Census Record Details

Census Year1940
LocationBlack-Hawk-County, Iowa
SurnameSmith
Given NameJoyce
Relationship to HeadDaughter
SexF
Color / RaceWhite
Age12
Marital StatusSingle
BirthplaceIowa
1935 Residence (City)Cedar Falls City
1935 Residence (County)Black Hawk
Additional Details
IndustryPW
Class of Worker0
Highest Grade6
1935 ResidenceSame place
Birth StateIowa
Birth CountryUnited States
Birthplace (normalized)iowa
Township / WardCedar Falls City
Est. Birth Year~1928

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 Joyce Age Birth yr
Ruth Smith Daughter — 5 ~1935
Lauren Smith Son — ~1940
Clarence Smith Head — 36 ~1904
Mabel Smith Spouse — 32 ~1908
Joyce Smith Daughter — 12 ~1928
Wayne Smith Son — 10 ~1930
Claude Smith Son — 7 ~1933
Clyde Smith Son — 7 ~1933

Census Appearances

1930
Black Hawk, …
Daughter, age 2
Black Hawk, Iowa · implied b. ~1928 — 4 household members
●  Primary link · ~Confirmed · 2 sources
XGBoost Household
Surname Smith
Given Name Joyce
Relationship to Head Daughter
Sex F
Color / Race White
Age 2
Marital Status Single
Birthplace Iowa
Father's Birthplace Missouri
Mother's Birthplace Iowa
Can Read/Write Yes
Birth State Iowa
Birth Country United States
Birthplace (normalized) iowa
1940
Black-Hawk-County, Iowa
Daughter, age 12
Black-Hawk-County, Iowa · implied b. ~1928 — 8 household members
Surname Smith
Given Name Joyce
Relationship to Head Daughter
Sex F
Color / Race White
Age 12
Marital Status Single
Birthplace Iowa
1935 Residence (City) Cedar Falls City
1935 Residence (County) Black Hawk
Industry PW
Class of Worker 0
Highest Grade 6
1935 Residence Same place
Birth State Iowa
Birth Country United States
Birthplace (normalized) iowa

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 Joyce Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joyce Smith
Daughter · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Claude Smith
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Smith
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lauren Smith
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clyde Smith
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wayne Smith
Sibling · 1940 · age 10
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 — Black-Hawk-County, Iowa Open full size

Page Contents

38 people indexed on this census page (nara:1940:m-t0627-01139-00287)

Line Name Age Relation Occupation Birthplace
1 Ernest Henriksen 36 Head Professor Oregon
2 Nihla Henriksen 36 Wife — S. Dakota
3 Craig Henriksen 4 Son 0 Montana
4 Louise Jordan 19 Maid Maid Colorado
5 F. G. Bigler 41 Head Owner Iowa
6 Irene Bigler 39 Wife Stenographer Iowa
7 Robert Bigler 17 Son — Iowa
8 John William Bigler 14 Son — Iowa
11 Lee Dix 23 Head Machinist Iowa
12 Violet Dix 22 Wife — Iowa
13 Dawn Lee Dix 4 Daughter 0 Iowa
14 L. J. Rankin 43 Head Gas Maker Iowa
15 Mina Rankin 41 Wife — Iowa
16 Lois Rankin 16 Daughter — Iowa
17 Reese, Aaron Rankin 70 Father-in-law — Iowa
18 Mary Alice Rankin 68 Mother-in-law — Iowa
19 Marion F. Broshuskee 26 Head Supt Of Service Iowa
20 Verna Mae Broshuskee 25 Wife Cashier Book-Keeper Iowa
21 Delores Mae Broshuskee 4 Daughter 0 Iowa
22 Fred B. Thompson 33 Head Tire Mounter Iowa
23 Marcelle Thompson 32 Wife — Iowa
24 Louise Thompson 4 Daughter 0 Iowa
25 Margaret Jane Thompson 1 Daughter 0 Iowa
26 Clarence Smith 36 Head Painter Missouri
27 Mabel Smith 32 Wife — Iowa
28 Joyce Smith THIS PERSON 12 Daughter — Iowa
29 Wayne Smith 10 Son — Iowa
30 Clyde Smith 7 Son — Minnesota
31 Claude Smith 7 Son — Minnesota
32 Ruth Smith 5 Daughter — Iowa
33 Lauren Smith 0 Son 0 Iowa
34 Ross E. Ellis 51 Head Chemist Iowa
35 Pearl Ellis 54 Wife — Iowa
36 Lynn Ellis 15 Son — Iowa
37 James J. Lawrence 43 Head Machinist Iowa
38 Marjorie M. Lawrence 35 Wife — Iowa
39 Robert Charles Lawrence 19 Son Farm Laborer Iowa
40 Marjorie Lawrence 16 Daughter Maid Iowa

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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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