Mary Young — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Cook-County, Illinois

Our Model Tree links this Mary Young across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Mattie — first a head (b.~1897), then head of a 2-person household.

Age 43 b. ~1897 Female Head Born: Mississippi Widowed

1940 Census Record Details

Census Year	1940
Location	Cook-County, Illinois
Surname	Young
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	Black
Age	43
Marital Status	Widowed
Birthplace	Mississippi
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Additional Details
Highest Grade	No 2
1935 Residence	Same Place
Birth State	Mississippi
Birth Country	United States
Birthplace (normalized)	mississippi
Township / Ward	Chicago
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.

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

Name	Relation to head	Relative to Mary	Age	Birth yr
Emma Young	Daughter	—	15	~1925
Mary Young	Head	—	43	~1897

Census Appearances

1920

Cook, Illinois

Daughter, age 21

Cook, Illinois · implied b. ~1899 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Young
Given Name	Mary
Relationship to Head	Daughter
Sex	F
Color / Race	Black
Age	21
Marital Status	Married
Birthplace	Mississippi
Father's Birthplace	Mississippi
Mother's Birthplace	Mississippi
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Mississippi
Birth Country	United States
Birthplace (normalized)	mississippi

1930

Cook, Illinois

Other, age 33

Cook, Illinois · implied b. ~1897 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Young
Given Name	Mary H
Relationship to Head	Wife-H
Sex	F
Color / Race	Black
Age	33
Marital Status	Married
Birthplace	Mississippi
Age at First Marriage	23
Father's Birthplace	Mississippi
Mother's Birthplace	Mississippi
Occupation	Servant
Industry	Private Family
Class of Worker	W
Can Read/Write	Yes
Birth State	Mississippi
Birth Country	United States
Birthplace (normalized)	mississippi

1940

Cook-County, Illinois

Head, age 43

Cook-County, Illinois · implied b. ~1897 — 2 household members

Surname	Young
Given Name	Mary
Relationship to Head	Head
Sex	F
Color / Race	Black
Age	43
Marital Status	Widowed
Birthplace	Mississippi
1935 Residence (City)	Chicago
1935 Residence (County)	Cook
Highest Grade	No 2
1935 Residence	Same Place
Birth State	Mississippi
Birth Country	United States
Birthplace (normalized)	mississippi

Model Tree

Model Tree available

Our Model Tree links Mary Young across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mattie Collier (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.

Show:

Gen 1 Parents confidence ≈ 0.92

Mother

Mattie Collier

b. ~1878

Source mother

● Household · direct · ~0.92

This person

Anchor record

Mary Young

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

★ You are viewing this record

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

39 people indexed on this census page (nara:1940:m-t0627-00923-00470)

Line	Name	Age	Relation	Occupation	Birthplace
2	Sarah Brown	34	Head	Common	Louisiana
3	Henry Dotson	35	Head	Laborer	Illinois
4	Hazel Dotson	32	Wife	—	Michigan
5	Harry L. Hall	35	Lodger	Mechanic	Tennessee
6	Nathaniel Stewart	29	Lodger	Cook	Georgia
7	Arnold Rosborough	31	Head	Clerk	Texas
8	Alma Rosborough	31	Wife	Maid	Texas
9	Ned Defurneau	24	Head	Washman	Louisiana
10	Audrey Defurneau	20	Wife	Steward	Louisiana
11	Estelle Arnold	54	Head	Interviewer	Virginia
12	Kenneth Reed	28	Head	Porter	Louisiana
13	Alice Reed	26	Wife	—	Ohio
14	James Jr. Henery	29	Lodger	Salesman	Oklahoma
15	Jesse Hills	46	Head	Common Laborer	Georgia
16	Elizabeth Hills	35	Wife	—	Georgia
17	Naomi Hills	14	Daughter	—	Illinois
18	Annie C. Hills	18	Daughter	—	Georgia
19	Isadore Hudson	34	Head	Butcher	Louisiana
20	Ora Hudson	32	Wife	Seamstress	Illinois
21	Clifford Hudson	14	Son	—	Illinois
22	Donald Hudson	6	Son	—	Illinois
23	Peter Laddier	55	Head	Mechanic	North Carolina
24	Alice Laddier	45	Wife	—	Georgia
25	Sylvester Carson	29	Lodger	Printer	Indiana
26	Mary Young THIS PERSON	43	Head	—	Mississippi
27	Emma Young	15	Daughter	—	Mississippi
28	Willie Smith	30	Head	Printer	Mississippi
29	Maybelle Smith	26	Wife	Maid	Tennessee
30	Willie Jr. Smith	3	Son	—	Illinois
31	Alene Smith	1	Daughter	—	Illinois
32	Napoleon Smith	26	Lodger	—	Arkansas
33	Ethel M. Turner	30	Lodger	Check Girl	Indiana
34	Fred Daniel	26	Brother	Laborer	Georgia
35	Ella Davies	41	Lodger	Boxer	Louisiana
36	Laura Halliburton	42	Lodger	Cook	Alabama
37	Charlie Link	50	Head	Red Cap	Indiana
38	Mayme Link	45	Wife	—	Tennessee
39	William R. Bourne	44	Lodger	Clerk	Barbados
40	Harrison Oglesby	50	Lodger	Janitor	Ohio

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Pedigree Summary

Mary

Gen 1 · 1 parents ~0.92

Max depth 4 (1900–1950 window)

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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