William Carlson — 1940 US Census Record

Linked across censuses

1940 United States Federal Census · King-County, Washington

Our Model Tree links this William Carlson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 3-person household.

Age 45 b. ~1895 Male Head Born: Finland Married

1940 Census Record Details

Census Year	1940
Location	King-County, Washington
Surname	Carlson
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	45
Marital Status	Married
Birthplace	Finland
1935 Residence (City)	Algona
1935 Residence (County)	King
Naturalization Status	Naturalized
Additional Details
Occupation	cement road
Industry	ribbon setter construction
Class of Worker	PW
Hours Worked	12
Income (1939)	636
Highest Grade	No 8
1935 Residence	Same house
Birth Country	Finland
Birthplace (normalized)	finland
Occupation	Cement Road
Township / Ward	Algona
Est. Birth Year	~1895

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 William	Age	Birth yr
William Carlson	Head	—	45	~1895
Pearl Carlson	Spouse	—	35	~1905
William Carlson	Son	—	13	~1927

Census Appearances

1920

Snohomish, Washington

Other, age 27

Snohomish, Washington · implied b. ~1893 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Carlson
Given Name	William
Relationship to Head	Boarder
Sex	M
Color / Race	White
Age	27
Marital Status	Single
Birthplace	Finland
Year of Immigration	1913
Naturalization Status	Alien
Father's Birthplace	Finland
Mother's Birthplace	Finland
Occupation	Logger
Industry	Lumber Camps
Class of Worker	W
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Mother Tongue	Swedish
Birth Country	Finland
Birthplace (normalized)	finland

1930

King, Washington

Head, age 36

King, Washington · implied b. ~1894

● Primary link · ~Confirmed · 1 source

XGBoost

Surname	Carlson
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	36
Marital Status	Married
Birthplace	Finland
Naturalization Status	Alien
Year of Immigration	1913
Age at First Marriage	32
Father's Birthplace	Finland
Mother's Birthplace	Finland
Occupation	road contractor
Industry	hills streets
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	Swedish
Home Owned/Rented	O
Home Value / Rent	1200
Radio Set	R
Veteran	No
Birth Country	Finland
Birthplace (normalized)	finland

1940

King-County, Washington

Head, age 45

King-County, Washington · implied b. ~1895 — 3 household members

Surname	Carlson
Given Name	William
Relationship to Head	Head
Sex	M
Color / Race	White
Age	45
Marital Status	Married
Birthplace	Finland
1935 Residence (City)	Algona
1935 Residence (County)	King
Naturalization Status	Naturalized
Occupation	cement road
Industry	ribbon setter construction
Class of Worker	PW
Hours Worked	12
Income (1939)	636
Highest Grade	No 8
1935 Residence	Same house
Birth Country	Finland
Birthplace (normalized)	finland

Model Tree

Linked across censuses

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

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This person

Anchor record

William Carlson

Head · 1940 · age 45 · b. ~1895 · Washington

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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 — King-County, Washington Open full size

Page Contents

40 people indexed on this census page (nara:1940:m-t0627-04343-00037)

Line	Name	Age	Relation	Occupation	Birthplace
1	Pearl D. Leines	52	Head	—	Tennessee
2	Phoebe Chapman	68	Lodger	—	Iowa
3	Kirby West	79	Lodger	—	Iowa
4	William Carlson THIS PERSON	45	Head	Cement Road	Finland
5	Pearl Carlson	35	Wife	—	Kansas
6	William Carlson	13	Son	—	Washington
7	Catherine Jennings	69	Head	Sales Woman	Kansas
8	Orville Harrison	34	Head	Carpenter	Missouri
9	Forest Harrison	32	Brother	Plasterer	Missouri
10	Herbert Hughes	65	Head	—	Indiana
11	Harry Hildreth	67	Head	—	Iowa
12	Lyle Russell	59	Head	Repair Shop	Kansas
13	Doris Russell	53	Wife	—	West Virginia
14	Harold Russell	21	Son	Clerk	Washington
15	Rosie Erickson	42	Head	—	Canada-Eng
16	Edward Erickson	16	Son	—	Alaska
17	Ruth Erickson	10	Daughter	—	Washington
18	Raymond Erickson	6	Son	—	Washington
19	Richard Dunn	39	Lodger	Laborer	Illinois
20	Thomas Wright	73	Head	Proprietor	Kansas
21	Della Wright	59	Wife	Proprietress	Idaho
22	Agnes Tarbuck	68	Head	—	Canada-Eng
23	Harry Tarbuck	30	Son	Electrician	Washington
24	Floyd Jones	43	Head	Repair Man	Washington
25	Lucien Leech	34	Cousin	—	Iowa
26	Claude Googe	51	Head	Janitor	Ohio
27	Nina Googe	51	Wife	Post Mistress	Washington
28	Kermit Googe	31	Son	Helper To A Plumber	Washington
29	Phyllis Googe	25	Daughter	Grade Teacher	Washington
30	Helen Johnson	47	Lodger	Grade Teacher	Washington
31	Emery Ridgley	74	Head	—	Illinois
32	Frank Roland	27	Head	Winch Driver	Oregon
33	Alice Roland	24	Wife	—	Montana
34	Ronald Roland	7	Son	—	Washington
35	Donald Roland	7	Son	—	Washington
36	Darlene Roland	5	Daughter	—	Washington
37	Barbara Roland	3	Daughter	—	Washington
38	Martha Howard	56	Mother-in-law	Servant	Canada-Eng
39	Lillian Tracy	61	Sister-in-law	—	Nebraska
40	James Hollenback	25	Head	Laborer	Wisconsin

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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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