Carl Olson — 1940 US Census Record

Model Tree available

1940 United States Federal Census · Polk-County, Iowa

Our Model Tree links this Carl Olson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Anna — first a head (b.~1890), then head of a 3-person household.

Age 50 b. ~1890 Male Head Born: Iowa Married

1940 Census Record Details

Census Year	1940
Location	Polk-County, Iowa
Surname	Olson
Given Name	Carl L.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Delaware Twps
1935 Residence (County)	Polk
Additional Details
Occupation	salesman
Industry	wholesale Hardware
Class of Worker	PW
Hours Worked	44
Income (1939)	1192
Highest Grade	No 6
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa
Occupation	Salesman
Township / Ward	Delaware Twps
Est. Birth Year	~1890

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 Carl	Age	Birth yr
Hazel Olson	Spouse	—	48	~1892
Mary Olson	Daughter	—	13	~1927
Carl Olson	Head	—	50	~1890

Census Appearances

1920

Polk, Iowa

Son, age 30

Polk, Iowa · implied b. ~1890 — 5 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Olson
Given Name	Carl
Relationship to Head	Son
Sex	M
Color / Race	White
Age	30
Marital Status	Married
Birthplace	Iowa
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Occupation	Laborer
Industry	City
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 40

Polk, Iowa · implied b. ~1890 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Olson
Given Name	Carl
Relationship to Head	Head
Sex	M
Color / Race	White
Age	40
Marital Status	Married
Birthplace	Iowa
Age at First Marriage	20
Father's Birthplace	Sweden
Mother's Birthplace	Sweden
Occupation	Clerk
Industry	Hardware
Class of Worker	W
Can Read/Write	Yes
Home Owned/Rented	O
Home Value / Rent	1200
Radio Set	R
Veteran	No
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

1940

Polk-County, Iowa

Head, age 50

Polk-County, Iowa · implied b. ~1890 — 3 household members

Surname	Olson
Given Name	Carl L.
Relationship to Head	Head
Sex	M
Color / Race	White
Age	50
Marital Status	Married
Birthplace	Iowa
1935 Residence (City)	Delaware Twps
1935 Residence (County)	Polk
Occupation	salesman
Industry	wholesale Hardware
Class of Worker	PW
Hours Worked	44
Income (1939)	1192
Highest Grade	No 6
1935 Residence	Same place
Birth State	Iowa
Birth Country	United States
Birthplace (normalized)	iowa

Model Tree

Model Tree available

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

Show:

Gen 1 Parents confidence ≈ 0.92

Father

John Olson

b. ~1850

Source father

● Household · direct · ~0.92

Mother

Anna Olson

b. ~1853

Source mother

● Household · direct · ~0.92

This person

Anchor record

Carl Olson

Head · 1940 · age 50 · b. ~1890 · Iowa

★ 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 — Polk-County, Iowa Open full size

Page Contents

39 people indexed on this census page (nara:1940:m-t0627-01192-00430)

Line	Name	Age	Relation	Occupation	Birthplace
1	Renato Bianchi	37	Head	Miner	Italy
2	Gladys Bianchi	35	Wife	None	Iowa
3	Bernard Bianchi	10	Son	—	Iowa
4	Therese Bianchi	7	Daughter	—	Iowa
5	Robert Bianchi	3	Son	—	Iowa
6	Samuel W. Ransom	66	Head	Carpenter	Illinois
7	Maude Ransom	33	Daughter	Operator Comptometer	Indiana
8	Carl L. Olson THIS PERSON	50	Head	Salesman	Iowa
9	Hazel Olson	48	Wife	—	Iowa
10	Mary Olson	13	Daughter	—	Iowa
11	Barney Christiansen	53	Head	Operator Garage	Norway
12	Viola Christiansen	40	Wife	—	Missouri
13	Gerald Christiansen	13	Son	—	Iowa
14	Elmer Anderson	51	Head	Salesman	New York
15	Rena Anderson	46	Wife	—	New York
16	Gerald Anderson	21	Son	Draftsman	New York
17	Samuel Keel	69	Head	—	Ohio
18	Sadie Keel	63	Wife	—	Iowa
19	Roberta Reeves	24	Granddaughter	Social Security Worker	Iowa
20	Orson S. Bowsher	54	Head	—	Iowa
21	Rosa Bowsher	48	Wife	Proprietor Boarding	Iowa
22	Almeda Bryant	13	Boarder	—	Iowa
23	Helen Kelley	6	Boarder	—	Iowa
24	Robert Bennett	5	Boarder	—	Iowa
25	Verne Strain	35	Head	Road Maintainer	Iowa
26	Arlene Strain	34	Wife	Teacher	Kansas
27	Ida Thornburg	80	Head	—	Pennsylvania
28	Millie Faust	86	Head	—	Iowa
29	Edna Edwards	64	Daughter	—	Iowa
30	Henry A. Haugh	51	Head	—	Indiana
31	Charles Haugh	53	Son	Carpenter, Bldg	Iowa
32	Alys Haugh	45	Son's wife	—	England
33	John W. Sample	40	Head	Butcher	Missouri
34	May M. Sample	33	Wife	Meat Trimmer	Iowa
35	Doris J. Sample	15	Daughter	—	Iowa
36	Albert Evans	55	Head	Bldg Engineer	Illinois
37	Elaine Evans	21	Daughter	New Worker	Missouri
38	Harry W. Gibson	34	Head	Operate Store	Iowa
39	Marie Gibson	37	Wife	Store Helper	Iowa

Search for Carl Olson

All Carl Olson Census Records Discover Olson Family Tree

Pedigree Summary

Carl

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)

Report inaccurate data