August Johnson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · Polk-County, Iowa

Our Model Tree links this August Johnson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 3-person household.

Age 48 b. ~1892 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Polk-County, Iowa
Surname	Johnson
Given Name	August A
Relationship to Head	Head
Sex	M
Color / Race	White
Age	48
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Union Twp.
1935 Residence (County)	Polk
Additional Details
Occupation	Owner & Oper
Industry	Farm
Class of Worker	OA
Hours Worked	70
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Owner & Oper
Township / Ward	Union Twp
Est. Birth Year	~1892

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 August	Age	Birth yr
August Johnson	Head	—	48	~1892
Richard Johnson	Son	—	17	~1923
Margie Johnson	Spouse	—	47	~1893

Census Appearances

1920

Polk, Iowa

Other, age 27

Polk, Iowa · implied b. ~1893 — 12 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	August A.
Relationship to Head	Lodger
Sex	M
Color / Race	White
Age	27
Marital Status	Single
Birthplace	Iowa
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Occupation	Salesman
Industry	Retail Dept Store
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Swedish
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1930

Polk, Iowa

Head, age 38

Polk, Iowa · implied b. ~1892 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	August A
Relationship to Head	Head
Sex	M
Color / Race	White
Age	38
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	29
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Occupation	Farmer
Industry	General Farming
Class of Worker	OA
Can Read/Write	Yes
Home Owned/Rented	R
Radio Set	R
Veteran	Yes
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Polk-County, Iowa

Head, age 48

Polk-County, Iowa · implied b. ~1892 — 3 household members

Surname	Johnson
Given Name	August A
Relationship to Head	Head
Sex	M
Color / Race	White
Age	48
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Union Twp.
1935 Residence (County)	Polk
Occupation	Owner & Oper
Industry	Farm
Class of Worker	OA
Hours Worked	70
Income (1939)	0
Highest Grade	No 8
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Linked across censuses

Our Model Tree links August 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

August Johnson

Head · 1940 · age 48 · b. ~1892 · Iowa

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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 — Polk-County, Iowa Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-01192-00770)

Line	Name	Age	Relation	Occupation	Birthplace
1	Geo C Alleman	59	Head	Owner & Oper	Iowa
2	Mary P Alleman	59	Wife	House Wife	Iowa
3	Irvin Alleman	33	Son	Labor	Iowa
4	Bertha L Alleman	32	Daughter in law	House Wife	Iowa
5	Verlin R Alleman	5	Grandson	—	Iowa
6	David N Graham	52	Head	Owner & Oper	Iowa
7	Cathryn E Graham	53	Wife	House Wife	Iowa
8	Aileen R Graham	16	Daughter	—	Iowa
9	Honora A Graham	14	Daughter	—	Iowa
10	Patricia Graham	12	Daughter	—	Iowa
11	David Graham	10	Son	—	Iowa
12	Edward Graham	5	Son	—	Iowa
13	Frank H Richmond	25	Head	Labor	Indiana
14	Helen H Richmond	26	Wife	House Wife	Iowa
15	Frank Jr Richmond	1	Son	—	Iowa
16	Laurine D Plonglan	35	Head	Operator	Iowa
17	Evelyn D Plonglan	34	Wife	House Wife	Iowa
18	Dorothy E Plonglan	15	Daughter	—	Iowa
19	Donald S Plonglan	10	Son	—	Iowa
20	Mary J Plonglan	5	Daughter	—	Iowa
21	Paul L Plonglan	4	Son	—	Iowa
22	August A Johnson THIS PERSON	48	Head	Owner & Oper	Iowa
23	Margie Johnson	47	Wife	House Wife	Iowa
24	Richard F Johnson	17	Son	Student	Iowa
25	Andrew J Sheldahl	52	Head	Operator & Owner	Iowa
26	Clara Sheldahl	44	Wife	House Wife	Iowa
27	Robert K Sheldahl	23	Son	Labor	Iowa
28	R L Sheldahl	22	Son	Labor	Iowa
29	Dale H Sheldahl	20	Son	Labor	Iowa
30	Eugene Sheldahl	17	Son	Labor	Iowa
31	John Jr Sheldahl	12	Son	Labor	Iowa
32	Isa Zachary	56	Head	Owner	Iowa
33	Delia Zachary	53	Wife	House Wife	Iowa
34	Harlan D Holmers	30	Head	Operator	Iowa
35	Marie L Holmers	24	Wife	House Wife	Iowa
36	Verla M Holmers	5	Daughter	—	Iowa
37	Clara E Alleman	58	Head	House Wife	Iowa
38	Leake C Alleman	32	Son	Labor	Iowa
39	Frank S Kositzka	68	Head	Operator	Germany
40	Minnie Kositzka	60	Wife	House Wife	Iowa

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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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