Blanche Johnson — 1940 US Census Record

Linked across censuses

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

Our Model Tree links this Blanche Johnson across the 1920, 1930 and 1940 US Censuses in Minnehaha-County, South Dakota (XGBoost, ~Confirmed) — first a spouse (b.~1894), then head of a 3-person household.

Age 46 b. ~1894 Female Spouse Born: South Dakota Married

1940 Census Record Details

Census Year	1940
Location	Minnehaha-County, South Dakota
Surname	Johnson
Given Name	Blanche
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	46
Marital Status	Married
Birthplace	South Dakota
1935 Residence (City)	Sioux Falls
1935 Residence (County)	Minnehaha
Additional Details
Highest Grade	8
1935 Residence	Same house
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota
Township / Ward	Sioux Falls
Est. Birth Year	~1894

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 Blanche	Age	Birth yr
Blanche Johnson	Spouse	—	46	~1894
Roy Johnson	Head	—	50	~1890
Eugene Johnson	Son	—	12	~1928

Census Appearances

1920

Minnehaha, South …

Spouse, age 26

Minnehaha, South Dakota · implied b. ~1894 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Blanche
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	26
Marital Status	Married
Birthplace	South Dakota
Father's Birthplace	England
Mother's Birthplace	England
Occupation	none
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	English
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota

1930

Minnehaha, South …

Spouse, age 36

Minnehaha, South Dakota · implied b. ~1894 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Blanche
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	36
Marital Status	Married
Birthplace	South Dakota
Age at First Marriage	20
Father's Birthplace	England
Mother's Birthplace	England
Can Read/Write	Yes
Birth State	South Dakota
Birth Country	United States
Birthplace (normalized)	south dakota

1940

Minnehaha-County, South …

Spouse, age 46

Minnehaha-County, South Dakota · implied b. ~1894 — 3 household members

Surname	Johnson
Given Name	Blanche
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	46
Marital Status	Married
Birthplace	South Dakota
1935 Residence (City)	Sioux Falls
1935 Residence (County)	Minnehaha
Highest Grade	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 Blanche Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Blanche Johnson

Spouse · 1940 · age 46 · b. ~1894 · 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 — Minnehaha-County, South Dakota Open full size

Page Contents

38 people indexed on this census page (nara:1940:m-t0627-03864-00139)

Line	Name	Age	Relation	Occupation	Birthplace
1	Roy Knutson	36	Head	Test Board Man	Nebraska
2	Laverda Knutson	32	Wife	—	Nebraska
3	Roy Jr Knutson	9	Son	—	Nebraska
4	Edward Knutson	5	Son	—	South Dakota
5	Everett Marsh	31	Head	Stenographer	Illinois
6	Ruth G Marsh	27	Wife	Retail & Wholesale Clerk	South Dakota
7	Connie Marsh	6	Daughter	—	South Dakota
8	Dorothy Marsh	19	Maid	Maid	Minnesota
9	Lewis Johnson	42	Head	Office Manager	Minnesota
10	Beth Johnson	36	Wife	—	Minnesota
11	Nadine Johnson	14	Daughter	—	Minnesota
12	Lyman Johnson	8	Son	—	South Dakota
13	Leslie Q Harling	33	Head	County Agent	Iowa
14	Florence Harling	26	Wife	—	South Dakota
15	Stephen Harling	2	Son	—	South Dakota
16	Carl W Moe	38	Head	Stock Clerk	South Dakota
17	Ethel M Moe	36	Wife	Beauty Operator	Iowa
18	Roy S Johnson	50	Head	Superintendent	South Dakota
19	Blanche Johnson THIS PERSON	46	Wife	—	South Dakota
20	Eugene B Johnson	12	Son	—	South Dakota
21	Mary A Laufman	57	Head	Representative	Kentucky
22	Burr Laufman	30	Lodger	Telephone Operator	Minnesota
23	Matilda Anderson	39	Lodger	Stenographer In Us Emp Service	South Dakota
24	Betty Effling	19	Lodger	—	Nebraska
25	Fred B Boyd	44	Head	Clerk In Office	Nebraska
26	Iva O Boyd	43	Wife	Primary Teacher	Kansas
27	Herman Brehfeldt	50	Head	Stock Feeder	Iowa
28	Agnes Brehfeldt	39	Wife	—	South Dakota
29	Arthur D Dunn	12	Step-son	—	South Dakota
30	Francis Mcgee	40	Head	Salesman	Iowa
31	Florence Mcgee	37	Wife	—	South Dakota
32	Jean Mcgee	13	Daughter	—	South Dakota
33	Donald Mcgee	7	Son	—	South Dakota
34	Ellen Lofgren	27	Sister-in-law	Laboratory Assistant	South Dakota
35	Paul Greve	30	Head	Price Checker	Minnesota
36	Ethel Greve	27	Wife	Mail Order Clerk	South Dakota
37	Henry Hanson	57	Head	Manager	South Dakota
38	Myrtle Hanson	47	Wife	—	South Dakota

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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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