Helen Schmidt — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · St.-Clair-County, Illinois

Our Model Tree links this Helen Schmidt across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1897), then head of a 3-person household.

Age 43 b. ~1897 Female Spouse Born: Missouri Married

1940 Census Record Details

Census Year	1940
Location	St.-Clair-County, Illinois
Surname	Schmidt
Given Name	Helen M.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Missouri
1935 Residence (City)	Belleville
1935 Residence (County)	St. Clair
Additional Details
Highest Grade	No 8
1935 Residence	Same place
Birth State	Missouri
Birth Country	United States
Birthplace (normalized)	missouri
Township / Ward	Belleville
Est. Birth Year	~1897

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.

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

Name	Relation to head	Relative to Helen	Age	Birth yr
Helen Schmidt	Spouse	—	43	~1897
Archie Schmidt	Head	—	49	~1891
Floyd Schmidt	Son	—	19	~1921

Census Appearances

1920

St Clair, …

Spouse, age 22

St Clair, Illinois · implied b. ~1898 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Schmidt
Given Name	Helen
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	22
Marital Status	Married
Birthplace	Missouri
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	German
Birth State	Missouri
Birth Country	United States
Birthplace (normalized)	missouri

1930

St Clair, …

Other, age 33

St Clair, Illinois · implied b. ~1897 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Schmidt
Given Name	Helen
Relationship to Head	Wife-H
Sex	F
Color / Race	White
Age	33
Marital Status	Married
Birthplace	Missouri
Age at First Marriage	20
Father's Birthplace	Germany
Mother's Birthplace	Germany
Can Read/Write	Yes
Birth State	Missouri
Birth Country	United States
Birthplace (normalized)	missouri

1940

St.-Clair-County, Illinois

Spouse, age 43

St.-Clair-County, Illinois · implied b. ~1897 — 3 household members

Surname	Schmidt
Given Name	Helen M.
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	43
Marital Status	Married
Birthplace	Missouri
1935 Residence (City)	Belleville
1935 Residence (County)	St. Clair
Highest Grade	No 8
1935 Residence	Same place
Birth State	Missouri
Birth Country	United States
Birthplace (normalized)	missouri

Model Tree

Linked across censuses

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

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This person

Anchor record

Helen Schmidt

Spouse · 1940 · age 43 · b. ~1897 · Illinois

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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 — St.-Clair-County, Illinois Open full size

Page Contents

38 people indexed on this census page (nara:1940:m-t0627-00878-00714)

Line	Name	Age	Relation	Occupation	Birthplace
41	Luella R. Frazier	24	Wife	—	Illinois
42	Hans W. Hartmann	65	Head	Executive	Germany
43	Emma M. Hartmann	51	Wife	—	Missouri
45	Walter W. Baldock	58	Head	Merchant	Illinois
46	Winnie Baldock	61	Wife	—	Illinois
47	Leona Wuebbels	24	Maid	Maid	Illinois
48	Ernst F. Schmiele	53	Head	Pattern Maker	Illinois
49	Anita Schmiele	47	Wife	—	Illinois
50	John H. Schmale	44	Head	Realtor	Illinois
51	Marie E. Schmale	41	Wife	—	Illinois
52	Archie Schmidt	49	Head	Merchant	Illinois
53	Helen M. Schmidt THIS PERSON	43	Wife	—	Missouri
54	Floyd N. Schmidt	19	Son	Bookkeeper	Missouri
55	Donald S. Foster	43	Head	Manager	New York
56	Jean Foster	34	Wife	—	Kansas
57	Ben Hansleben	46	Head	Mail Carrier	Illinois
58	Elsie Hansleben	48	Wife	—	Illinois
59	Jane Hansleben	18	Daughter	—	Illinois
60	Ruth Hansleben	17	Daughter	—	Illinois
61	Edmund H. Twienhoefel	55	Head	Agent	Illinois
62	Martha Twienhoefel	54	Wife	—	Illinois
63	Edward L. Heck	28	Head	Sheet Metal Worker	Illinois
64	Dorothy K. Heck	32	Wife	—	Illinois
66	Emma Schwartz	75	Head	—	Illinois
67	Alma Schwartz	48	Daughter	—	Missouri
68	Adolph Schreggemann	55	Son-in-law	Salesman	Illinois
69	Esther Eggemann	52	Daughter	—	Missouri
70	Clara Neubauer	47	Boarder	Teacher	Illinois
71	Geo Kranz	42	Head	Lining Cutter Shoe Worker	Arkansas
72	Eleanor Kranz	39	Wife	—	Illinois
73	Harold Hecks	35	Head	Resident Mgr.	Oklahoma
74	Elsie R. Hecks	27	Wife	—	Missouri
75	Harold Jr. Hecks	2	Son	—	Illinois
76	Vanhin H. Randle	21	Head	Miner	Illinois
77	Alma Randle	24	Wife	—	Illinois
78	Janet Randle	1	Daughter	—	Illinois
79	Ernest Mockman	66	Head	Machinist	Illinois
80	Louisa Mockman	62	Wife	—	Illinois

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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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