Frank Hess — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Frank Hess across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 4-person household.

Age 47 b. ~1893 Male Head Born: Minnesota Married

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Hess
Given Name	Frank J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Additional Details
Occupation	Dentist
Industry	Own Office
Class of Worker	OA
Hours Worked	48
Income (1939)	2250
Highest Grade	C 4
1935 Residence	Same house
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota
Occupation	Dentist
Township / Ward	Chicago City
Est. Birth Year	~1893

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.

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

Name	Relation to head	Relative to Frank	Age	Birth yr
Stella Hess	Spouse	—	46	~1894
Frank Hess	Head	—	47	~1893
Harriet Hess	Daughter	—	19	~1921
Frank Hess	Son	—	17	~1923

Census Appearances

1920

Cook, Illinois

Head, age 29

Cook, Illinois · implied b. ~1891 — 2 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hess
Given Name	Frank Y
Relationship to Head	Head
Sex	M
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Minnesota
Father's Birthplace	Minnesota
Mother's Birthplace	Minnesota
Occupation	Dentist
Industry	Dental Co
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	R
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1930

Cook, Illinois

Head, age 37

Cook, Illinois · implied b. ~1893 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hess
Given Name	Frank
Relationship to Head	Head
Sex	M
Color / Race	White
Age	37
Marital Status	Married
Birthplace	Minnesota
Age at First Marriage	27
Father's Birthplace	Minnesota
Mother's Birthplace	Minnesota
Occupation	Dentist
Industry	Private Practice
Class of Worker	OA
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	10,000
Radio Set	R
Veteran	No
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

1940

Cook-County, Illinois

Head, age 47

Cook-County, Illinois · implied b. ~1893 — 4 household members

Surname	Hess
Given Name	Frank J.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	47
Marital Status	Married
Birthplace	Minnesota
1935 Residence (City)	Chicago City
1935 Residence (County)	Cook
Occupation	Dentist
Industry	Own Office
Class of Worker	OA
Hours Worked	48
Income (1939)	2250
Highest Grade	C 4
1935 Residence	Same house
Birth State	Minnesota
Birth Country	United States
Birthplace (normalized)	minnesota

Model Tree

Linked across censuses

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

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This person

Anchor record

Frank Hess

Head · 1940 · age 47 · b. ~1893 · 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 — Cook-County, Illinois Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-00999-00351)

Line	Name	Age	Relation	Occupation	Birthplace
1	Dorothy Vizard	27	Wife	—	Illinois
2	Olaf Ahlberg	62	Head	Shoe Maker	Sweden
3	Lars Olsen	63	Lodger	Shoe Maker	Sweden
4	Julia Ahlberg	57	Wife	—	Illinois
5	David Erickson	42	Head	Machinist	Sweden
6	Ina Erickson	55	Wife	—	Sweden
7	Lewis R. Hamley	59	Head	Acct.	Ohio
8	Alice M. Hamley	56	Wife	—	Illinois
9	Louis Waco	62	Brother	Ship. Clerk	Illinois
10	Ernest Free	60	Head	Pensioned	Illinois
11	Meta Free	55	Wife	—	Illinois
12	Ruth Free	31	Daughter	Typist	Illinois
13	John Wildberger	46	Head	Polisher	Missouri
14	Ellen Wildberger	42	Wife	—	Wisconsin
15	Melvin Wildberger	3	Son	—	Illinois
16	End Of Block 17 - Begin Block 18	None	—	—	—
17	Frank J. Hess THIS PERSON	47	Head	Dentist	Minnesota
18	Stella Hess	46	Wife	—	Minnesota
19	Harriet Hess	19	Daughter	—	Illinois
20	Frank Hess	17	Son	—	Illinois
21	Herbert Helgeson	40	Head	Owner & Printer	Sweden
22	Esther Helgeson	45	Wife	—	Nebraska
23	Raymond Helgeson	13	Son	—	Illinois
24	Leonard Helgeson	11	Son	—	Illinois
25	Dorothy Helgeson	5	Daughter	—	Illinois
26	Adolph Nordling	81	Head	—	Sweden
27	Sophie Nordling	78	Wife	—	Sweden
28	Robert Blakeley	56	Head	Yard Master	Illinois
29	Extra Blakeley	None	Lane	—	—
30	Frank Pfister	49	Head	Traffic	Illinois
31	Ida C. Pfister	44	Wife	—	Illinois
32	Frank Jr. Pfister	21	Son	—	Illinois
33	Jas. C. Hammer	33	Head	Lawyer	Illinois
34	Irene Hammer	32	Wife	—	Illinois
35	Judith Hammer	4	Daughter	—	Illinois
36	Donald Hammer	2	Son	—	Illinois
37	Clarence Ludwig	40	Head	Accountant	Illinois
38	Bernice Ludwig	36	Wife	—	Illinois
39	Donald Ludwig	9	Son	—	Illinois
40	Priscilla Ludwig	6	Daughter	—	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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