Robert Cox — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Tulsa-County, Oklahoma

Our Model Tree links this Robert Cox across the 1920, 1930 and 1940 US Censuses in Tulsa-County, Oklahoma (XGBoost, ~Confirmed), with identified parents Fred & Bertha — first a head (b.~1908), then head of a 3-person household.

Age 32 b. ~1908 Male Head Born: Kansas Married

1940 Census Record Details

Census Year	1940
Location	Tulsa-County, Oklahoma
Surname	Cox
Given Name	Robert L.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Kansas
1935 Residence (City)	Ponca City
1935 Residence (County)	Kay
Additional Details
Occupation	Salesman
Industry	Oil well supply
Class of Worker	PW
Hours Worked	42
Income (1939)	900
Highest Grade	Hs 4
1935 Residence	Oklahoma
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas
Occupation	Salesman
Township / Ward	Tulsa City
Est. Birth Year	~1908

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 Robert	Age	Birth yr
Kathryn Cox	Daughter	—	7	~1933
Robert Cox	Head	—	32	~1908
Esther Cox	Spouse	—	27	~1913

Census Appearances

1920

Kay, Oklahoma

Son, age 12

Kay, Oklahoma · implied b. ~1908 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cox
Given Name	Robert
Relationship to Head	Son
Sex	M
Color / Race	White
Age	12
Marital Status	Single
Birthplace	Kansas
Father's Birthplace	Kansas
Mother's Birthplace	Illinois
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

1930

Kay, Oklahoma

Son, age 22

Kay, Oklahoma · implied b. ~1908 — 6 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cox
Given Name	Robert L.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	22
Marital Status	Single
Birthplace	Kansas
Father's Birthplace	Kansas
Mother's Birthplace	Illinois
Occupation	salesman
Industry	filling station
Class of Worker	W
Can Read/Write	Yes
Veteran	No
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

1940

Tulsa-County, Oklahoma

Head, age 32

Tulsa-County, Oklahoma · implied b. ~1908 — 3 household members

Surname	Cox
Given Name	Robert L.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	32
Marital Status	Married
Birthplace	Kansas
1935 Residence (City)	Ponca City
1935 Residence (County)	Kay
Occupation	Salesman
Industry	Oil well supply
Class of Worker	PW
Hours Worked	42
Income (1939)	900
Highest Grade	Hs 4
1935 Residence	Oklahoma
Birth State	Kansas
Birth Country	United States
Birthplace (normalized)	kansas

Model Tree

Model Tree available

Our Model Tree links Robert Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Cox (~0.92 confidence) and mother Bertha Cox (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.

Show:

Gen 1 Parents confidence ≈ 0.92

Father

Fred Cox

b. ~1878

Source father

● Household · direct · ~0.92

Mother

Bertha Cox

b. ~1887

Source mother

● Household · direct · ~0.92

This person

Anchor record

Robert Cox

Head · 1940 · age 32 · b. ~1908 · Oklahoma

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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 — Tulsa-County, Oklahoma Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03351-00154)

Line	Name	Age	Relation	Occupation	Birthplace
1	James Cox	4	Son	—	Oklahoma
2	Robert L. Cox THIS PERSON	32	Head	Salesman	Kansas
3	Esther M. Cox	27	Wife	—	Indiana
4	Kathryn J. Cox	7	Daughter	—	Oklahoma
5	Walter L. Copeland	34	Head	Shipping Clerk	Texas
6	Nadine J. Copeland	23	Wife	—	Missouri
7	Harry Lee Copeland	0	Son	—	Oklahoma
8	George H. Franklin	69	Head	Book Keeper	Missouri
9	Mirl Franklin	64	Wife	—	Oklahoma
10	Hazel Davis	44	Daughter	Seamstress	Missouri
11	Jack B. Davis	20	Son	Book Keeper	Oklahoma
12	William P. Miller	48	Head	Printer	Kansas
13	Alpha O. Miller	48	Wife	—	Nebraska
14	Ruth Miller	23	Daughter	Stenographer	Kansas
15	Dorothy Miller	21	Daughter	Stenographer	Oklahoma
16	Charles Miller	19	Son	—	Oklahoma
17	Evelyna Miller	17	Daughter	—	Oklahoma
18	William P. Jr. Miller	5	Son	—	Oklahoma
19	H. A. Whiteside	31	Head	Architect	Kansas
20	Doris Ann Whiteside	30	Wife	—	Kansas
21	Victor A. Whiteside	8	Son	—	Kansas
22	Roger E. Whiteside	6	Son	—	Kansas
23	Edley F. Swartz	31	Head	Salesman	Oklahoma
24	Millie O. Swartz	32	Wife	—	Oklahoma
25	Rachel Swartz	7	Daughter	—	Oklahoma
26	Lawrence White	34	Head	Machinist	Oklahoma
27	Helen White	29	Wife	—	Oklahoma
28	Barbara Kay White	5	Daughter	—	Oklahoma
29	Walter Norris	34	Head	Truck Driver	Oklahoma
30	Henrietta Norris	30	Wife	—	Oklahoma
31	Oren L. Baker	30	Head	Traveling Salesman	Kansas
32	Nina Lee Baker	25	Wife	—	Kansas
33	Oren L. Baker	2	Son	—	Kansas
34	Ronald D. Baker	0	Son	—	Kansas
35	—	None	—	—	—
36	Earl O. Benson	35	Head	Railway Clerk	Oklahoma
37	Phyllis Benson	25	Wife	—	Missouri
38	John H. Harrison	65	Head	Landscape Gardening	Missouri
39	Gertrude Harrison	61	Wife	—	Missouri
40	Edward M. Satter	33	Head	Assistant Manager	Indiana

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Pedigree Summary

Robert

Gen 1 · 2 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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