Arthur Cooper — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Lawrence-County, South Dakota

Our Model Tree links this Arthur Cooper across the 1920, 1930 and 1940 US Censuses in Lawrence-County, South Dakota (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 3-person household.

Age 54 b. ~1886 Male Head Born: South Dakota Married

1940 Census Record Details

Census Year	1940
Location	Lawrence-County, South Dakota
Surname	Cooper
Given Name	Arthur
Relationship to Head	Head
Sex	M
Color / Race	White
Age	54
Marital Status	Married
Birthplace	South Dakota
1935 Residence (City)	Lead City
1935 Residence (County)	Lawrence
Additional Details
Occupation	Hoisting Engine
Industry	Gold Mine
Class of Worker	PW
Income (1939)	2100
Highest Grade	No 8
1935 Residence	Same House
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota
Occupation	Hoisting Engine
Township / Ward	Lead City
Est. Birth Year	~1886

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 Arthur	Age	Birth yr
Arthur Cooper	Head	—	54	~1886
Anna Cooper	Spouse	—	54	~1886
Lois Cooper	Daughter	—	22	~1918

Census Appearances

1920

Lawrence, South …

Head, age 34

Lawrence, South Dakota · implied b. ~1886

● Primary link · ~Confirmed · 1 source

XGBoost

Surname	Cooper
Given Name	Arthur C.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	34
Marital Status	Married
Birthplace	South Dakota
Father's Birthplace	England
Mother's Birthplace	England
Occupation	Hoisting Engineer
Industry	Mining Co
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Home Owned/Rented	O
Home Free/Mortgaged	F
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota

1930

Lawrence, South …

Head, age 42

Lawrence, South Dakota · implied b. ~1888 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Cooper
Given Name	Arthur E.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	42
Marital Status	Married
Birthplace	South Dakota
Age at First Marriage	29
Father's Birthplace	England
Mother's Birthplace	England
Occupation	Hoisting Engineer
Industry	Gold Mine
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	1500
Radio Set	R
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota

1940

Lawrence-County, South …

Head, age 54

Lawrence-County, South Dakota · implied b. ~1886 — 3 household members

Surname	Cooper
Given Name	Arthur
Relationship to Head	Head
Sex	M
Color / Race	White
Age	54
Marital Status	Married
Birthplace	South Dakota
1935 Residence (City)	Lead City
1935 Residence (County)	Lawrence
Occupation	Hoisting Engine
Industry	Gold Mine
Class of Worker	PW
Income (1939)	2100
Highest Grade	No 8
1935 Residence	Same House
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota

Model Tree

Linked across censuses

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

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This person

Anchor record

Arthur Cooper

Head · 1940 · age 54 · b. ~1886 · South Dakota

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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 — Lawrence-County, South Dakota Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-03860-00132)

Line	Name	Age	Relation	Occupation	Birthplace
41	Delbert Freeman	12	Son	—	South Dakota
42	Donald Freeman	4	Son	—	South Dakota
43	Hilding Stonefelt	39	Head	Carpenter Foreman	South Dakota
44	Elsie O Stonefelt	29	Wife	—	Illinois
45	Lois Stonefelt	5	Daughter	—	South Dakota
46	Eleanor Stonefelt	2	Daughter	—	South Dakota
47	Theodore B Ecker	57	Head	Draftsman	Pennsylvania
48	Alice O Ecker	51	Wife	—	Pennsylvania
49	Theodore P Ecker	26	Son	Cage Tender	South Dakota
50	Bruce H B Ecker	24	Son	—	South Dakota
51	Stanley J White	53	Head	Carpenter	England
52	Elizabeth M White	56	Wife	—	England
53	Clarence A White	22	Son	Truck Driver	South Dakota
54	Arthur Cooper THIS PERSON	54	Head	Hoisting Engine	South Dakota
55	Anna L Cooper	54	Wife	—	Norway
56	Lois A B Cooper	22	Daughter	—	South Dakota
57	Thomas J Burchell	55	Head	Watchman	Nebraska
58	Mary D Burchell	43	Wife	—	South Dakota
59	Norma Burchell	15	Daughter	—	South Dakota
60	Rosemary Burchell	5	Daughter	—	South Dakota
61	Emma Harbour	73	Mother	—	Canada-French
62	Roy G Perkins	40	Head	Miner	Iowa
63	Ethel O Perkins	30	Wife	—	Nebraska
64	Donald Perkins	10	Son	—	South Dakota
65	Ruth Perkins	8	Daughter	—	South Dakota
66	David Perkins	4	Son	—	South Dakota
67	Robert Perkins	3	Son	—	South Dakota
68	George E Murray	48	Head	Miner	Nebraska
69	Eleanor M Murray	47	Wife	—	Nebraska
70	Georgia A Murray	18	Daughter	—	South Dakota
71	Daniel Murray	14	Son	—	South Dakota
72	Gerald Murray	8	Son	—	South Dakota
73	Bryce J Torrence	22	Son	Truck Driver	South Dakota
74	Patricia Torrence	21	Daughter	—	South Dakota
75	Thomas Torrence	1	Grandson	—	South Dakota
76	Ole O Storsve	64	Head	Drill Sharpener	Norway
77	Johanna Storsve	52	Wife	—	Denmark
78	Birney Storsve	24	Son	Mill Laborer	South Dakota
79	Harold Storsve	23	Son	Laborer	South Dakota
80	Andrew G Nyberg	57	Head	Mine Carpenter	Sweden

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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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