Maria Johnson — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Alameda, California

Our Model Tree links this Maria Johnson across the 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed) — first a spouse (b.~1901), then head of a 5-person household.

Age 29 b. ~1901 Female Spouse Born: Mexico Married

1930 Census Record Details

Census Year	1930
Location	Alameda, California
Surname	Johnson
Given Name	Maria
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Mexico
Naturalization Status	Naturalized
Year of Immigration	1910
Age at First Marriage	21
Father's Birthplace	Mexico
Mother's Birthplace	Mexico
Additional Details
Occupation	Plumber
Industry	Work
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	Spanish
Birth Country	Mexico
Birthplace (normalized)	mexico
Occupation	Plumber
Township / Ward	Berkeley City
Est. Birth Year	~1901

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.

5 people recorded at the same address in the 1930 census.

Name	Relation to head	Relative to Maria	Age	Birth yr
Arthur Johnson	Head	—	35	~1895
Arthur Johnson	Son	—	1	~1929
Carmen Johnson	Daughter	—	5	~1925
Nila Johnson	Daughter	—	3	~1927
Maria Johnson	Spouse	—	29	~1901

Census Appearances

1930

Alameda, California

Spouse, age 29

Alameda, California · implied b. ~1901 — 5 household members

Surname	Johnson
Given Name	Maria
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	29
Marital Status	Married
Birthplace	Mexico
Naturalization Status	Naturalized
Year of Immigration	1910
Age at First Marriage	21
Father's Birthplace	Mexico
Mother's Birthplace	Mexico
Occupation	Plumber
Industry	Work
Class of Worker	W
Can Read/Write	Yes
Mother Tongue	Spanish
Birth Country	Mexico
Birthplace (normalized)	mexico

1940

Alameda-County, California

Spouse, age 39

Alameda-County, California · implied b. ~1901 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Marie
Relationship to Head	Wife
Sex	F
Color / Race	White
Age	39
Marital Status	Married
Birthplace	Mexico
1935 Residence (City)	Berkeley
1935 Residence (County)	Alameda
Naturalization Status	Naturalized
Highest Grade	8
1935 Residence	Same place
Birth Country	Mexico
Birthplace (normalized)	mexico

Model Tree

Linked across censuses

Our Model Tree links Maria Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Maria Johnson

Spouse · 1930 · age 29 · b. ~1901 · California

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Confirmed / household (~0.90+) Probable / derived (~0.65–0.89) Candidate (<0.65, unverified)

Original Census Page

1930 US Federal Census — Alameda, California Open full size

Page Contents

50 people indexed on this census page (ia:1930:californiacensus00reel111:0175)

Line	Name	Age	Relation	Occupation	Birthplace
1	Hugo Schmitz	67	Head	Artist	Germany
2	Narcisa Schmitz	55	Wife	—	Pennsylvania
3	Hugo Jr. Schmitz	22	Son	—	California
4	Bessie B. Knight	45	Head	Dressmaker	Ohio
5	Earl Knight	26	Son	—	Indiana
6	Lucile H. Searey	29	Head	Cashier	California
7	Woodrow S. Searey	16	Son	—	California
8	Sue C. Searey	12	Son	—	California
9	Gladys A. Edwards	25	Daughter	—	California
10	Ray S. Edwards	2	Grandson	—	California
11	Baron W. Edwards	1	Grandson	—	California
12	O. O. Packard	23	Head	Mail Clerk	Colorado
13	Pauline M. Packard	24	Wife	—	California
14	Cara F. Packard	5	Daughter	—	California
15	Clarence B. Carlson	29	Brother	Laborer	Minnesota
16	Robert C. Situs	23	Roomer	Laborer	United States
17	Trowald M. Pedersen	29	Head	Gardener	Denmark
18	Caroline Pedersen	27	Wife	—	Denmark
19	Bernice G. Pedersen	3	Son	—	Wisconsin
20	Lois Pedersen	1	Daughter	—	Wisconsin
21	Julia T. Johnston	53	Head	Student	Nebraska
22	Cameron J. Johnston	18	Son	Manager	Washington
23	Julia Hester Mcpherson	53	Sister	Student	Nebraska
24	Joseph Avonsetto	26	Head	Teacher	South America
25	Willa R. Avonsetto	24	Wife	—	Pennsylvania
26	Percy J. Labade	31	Head	—	California
27	Margaret G. Labade	29	Wife	Driller	Maine
28	Margaret L. Labade	9	Daughter	—	California
29	Joseph C. Harding	69	Head	Student	Kentucky
30	Anna J. Harding	72	Wife	Salesman	Kentucky
31	Marian B. Harding	29	Daughter	—	Tennessee
32	Ernest D. Harding	37	Head	Typist	Tennessee
33	Bess A. Harding	34	Wife	Truck Driver	California
34	Richard D. Harding	9	Son	—	California
35	Marilyn Harding	6	Daughter	Student	California
36	Velma Morris	24	Head	Saleslady	California
37	Beverley Morris	4	Daughter	Saleslady	California
38	Albert D. Dewey	52	Head	—	California
39	Alice M. Dewey	47	Wife	Farmer	Illinois
40	E. Ellen Dewey	57	Sister	Worker	Kentucky
41	Henry W. Eagle	61	Head	—	California
42	Alvira A. Eagle	33	Wife	—	Idaho
43	Elizabeth M. Galbreath	71	Mother-in-law	—	Missouri
44	Ira L. Galbreath	40	Brother-in-law	—	Idaho
45	Arthur A. Johnson	35	Head	Barber	California
46	Maria Johnson THIS PERSON	29	Wife	Plumber	Mexico
47	Carmen Johnson	5	Daughter	—	California
48	Nila Johnson	3	Daughter	—	California
49	Arthur Johnson	1	Son	—	California
50	Sherwood W. Shear	37	Head	Student	New York

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1930 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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