Gladys Smith — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Gladys Smith across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1892), then head of a 5-person household.

Age 48 b. ~1892 Female Spouse Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Black-Hawk-County, Iowa
Surname	Smith
Given Name	Gladys
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	48
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Waterloo City
1935 Residence (County)	Black Hawk
Additional Details
Class of Worker	0
Hours Worked	0
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Township / Ward	Waterloo City
Est. Birth Year	~1892

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 Gladys	Age	Birth yr
Clark Smith	Head	—	56	~1884
Completed Rihl	Other	—	800	~1140
Donald Smith	Son	—	15	~1925
Paul Smith	Son	—	18	~1922
Gladys Smith	Spouse	—	48	~1892

Census Appearances

1920

Black Hawk, …

Other, age 26

Black Hawk, Iowa · implied b. ~1894 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Smith
Given Name	Gladys
Relationship to Head	Roomer
Sex	F
Color / Race	White
Age	26
Marital Status	Married
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Black Hawk, …

Other, age 37

Black Hawk, Iowa · implied b. ~1893 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Smith
Given Name	Gladys
Relationship to Head	Sister
Sex	F
Color / Race	White
Age	37
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Iowa
Mother's Birthplace	Iowa
Occupation	Clerk
Industry	Flower Shop
Class of Worker	W
Can Read/Write	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Black-Hawk-County, Iowa

Spouse, age 48

Black-Hawk-County, Iowa · implied b. ~1892 — 5 household members

Surname	Smith
Given Name	Gladys
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	48
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Waterloo City
1935 Residence (County)	Black Hawk
Class of Worker	0
Hours Worked	0
Highest Grade	Hs 4
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Linked across censuses

Our Model Tree links Gladys Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Gladys Smith

Spouse · 1940 · age 48 · b. ~1892 · Iowa

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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 — Black-Hawk-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01140-00693)

Line	Name	Age	Relation	Occupation	Birthplace
41	Leonard J. Nelson	29	Head	Salesman	Iowa
42	Geraldine O. Nelson	25	Wife	—	Iowa
43	Earl E. Cook	32	Head	Repairman	Iowa
44	Helen Q. Cook	24	Wife	—	Iowa
45	Richard Cook	8	Son	—	Iowa
46	Russell Cook	6	Son	—	Iowa
47	Clarence Swain	42	Head	Maintenance	Iowa
48	Eva O. Swain	45	Wife	—	Iowa
49	Roland Swain	18	Son	—	Iowa
50	Patsy Swain	5	Daughter	—	Iowa
51	Frank Brock	47	Head	Machinist	Minnesota
52	Rose Brock	46	Wife	—	Minnesota
53	Edward Brock	21	Son	Repairman	Minnesota
54	Phyllis O. Brock	17	Daughter	New Worker	Minnesota
55	Clifford Dryden	55	Head	Line Man	Ohio
56	Grace Dryden	52	Wife	—	South Dakota
57	Muriel Ann Dryden	25	Daughter	Secretary	Idaho
58	Margery G. Dryden	26	Daughter	Bookkeeper	Idaho
59	Pauline R. Dryden	17	Daughter	—	Iowa
60	Lois Jean Dryden	13	Daughter	—	Iowa
61	Robert O. Morehouse	36	Head	Bricklayer	Iowa
62	Agnes Morehouse	33	Wife	—	South Dakota
63	Thomas Morehouse	10	Son	—	Iowa
64	William Morehouse	10	Son	—	Iowa
65	Clarence Frost	36	Head	Truck Driver	Iowa
66	Verna L. Frost	32	Wife	Stenographer	Iowa
67	Noah B. Blix	66	Head	Brakeman	Missouri
68	Delores G. Blix	51	Wife	—	Iowa
69	Donald B. Blix	24	Son	Painter	Iowa
70	Martin Stallman	47	Head	Sheet Metal Worker	Iowa
71	Martha Stallman	45	Wife	—	Iowa
72	Marlys Jean Stallman	11	Daughter	—	Iowa
73	Martin Jr. Stallman	7	Son	—	Iowa
74	Marian Stallman	6	Son	—	Iowa
75	Clark W. Smith	56	Head	Clerical	Iowa
76	Gladys Smith THIS PERSON	48	Wife	—	Iowa
77	Paul Jr. Smith	18	Son	—	Iowa
78	Donald E. Smith	15	Son	—	Iowa
79	Completed Block 800 Rihl	800	Row	—	Lawson
80	Charles Lauritsen	70	Head	Stone Mason	Denmark

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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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