John Hagan — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · San Francisco, California

Our Model Tree links this John Hagan across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a son (b.~1912), then head of a 5-person household.

Age 18 b. ~1912 Male Son Born: California Single

1930 Census Record Details

Census Year	1930
Location	San Francisco, California
Surname	Hagan
Given Name	John J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	18
Marital Status	Single
Birthplace	California
Father's Birthplace	Ireland
Mother's Birthplace	California
Additional Details
Can Read/Write	Yes
Birth State	California
Birth Country	United States
Birthplace (normalized)	california
Township / Ward	City Of San Francisco
Est. Birth Year	~1912

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 John	Age	Birth yr
John Hagan	Son	—	18	~1912
John Hagan	Head	—	60	~1870
Francis Hagan	Son	—	15	~1915
Charles Hagan	Son	—	20	~1910
Mary Hagan	Spouse	—	55	~1875

Census Appearances

1930

San Francisco, …

Son, age 18

San Francisco, California · implied b. ~1912 — 5 household members

Surname	Hagan
Given Name	John J.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	18
Marital Status	Single
Birthplace	California
Father's Birthplace	Ireland
Mother's Birthplace	California
Can Read/Write	Yes
Birth State	California
Birth Country	United States
Birthplace (normalized)	california

1940

San-Francisco-County, California

Son, age 29

San-Francisco-County, California · implied b. ~1911 — 3 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Hogan
Given Name	John
Relationship to Head	Son
Sex	M
Color / Race	White
Age	29
Marital Status	Single
Birthplace	California
1935 Residence (City)	San Francisco
1935 Residence (County)	San Francisco
Occupation	Mechanic
Industry	Automobile
Class of Worker	PW
Hours Worked	40
Income (1939)	900
Highest Grade	Hs 4
1935 Residence	Same house
Birth State	California
Birth Country	United States
Birthplace (normalized)	california

Model Tree

Linked across censuses

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

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This person

Anchor record

John Hagan

Son · 1930 · age 18 · b. ~1912 · California

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Sibling

Charles Hagan

Sibling · 1930 · age 20

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Francis Hagan

Sibling · 1930 · age 15

Source co-child of head (derived)

● Co-child · derived · ~0.88

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

Original Census Page

1930 US Federal Census — San Francisco, California Open full size

Page Contents

44 people indexed on this census page (ia:1930:californiacensus00reel205:0433)

Line	Name	Age	Relation	Occupation	Birthplace
1	Charles Cohen	39	Head	Tailor	Poland
2	Fannie Cohen	36	Wife	None	Rumania
3	Sylvia Cohen	14	Daughter	—	California
4	Lillian Cohen	11	Daughter	—	California
5	Joseph Cohen	9	Son	—	California
6	Rosalind Cohen	6	Daughter	—	California
7	Mildred Cohen	4	Daughter	—	California
8	Av. Chukayeff	27	Head	Student	Russia
9	Mrs. Chukayeff	20	Wife	Shipping Clerk	Russia
10	S.D. Klodnitsky	39	Brother-in-law	Clerk	Russia
11	John Hagan	60	Head	Engineer	Ireland
12	Mary A. Hagan	55	Wife	—	California
13	Charles H. Hagan	20	Son	—	California
14	John J. Hagan THIS PERSON	18	Son	—	California
15	Francis Hagan	15	Son	—	California
16	Agnes Timmons	47	Head	—	California
17	Morris Timmons	10	Daughter	—	California
18	Timmons	8	Daughter	—	California
19	Daniel Weickt	68	Head	Baker	Germany
20	Walter W. Weickt	40	Son	Baker	California
21	Madeline Weickt	30	Daughter	Clerk	California
22	Bernard Bandley	19	Roomer	Laborer	New York
23	Elizabeth Keyes	75	Head	None	Alabama
24	John F. Keyes	19	Husband	Retired	Massachusetts
25	John F. Jr. Keyes	48	Son	Pensioned	California
26	Robert M. Keyes	44	Son	Commercial	California
27	Agnes Estrada	30	Head	Worker	Mexico
28	James Carroll	63	Head	Motor Man	Irish Free State
29	Hannah Carroll	59	Wife	None	Ireland
30	Michael Walsh	30	Roomer	Conductor	Ireland
31	Arthur Hoffman	50	Roomer	Baker	Germany
32	Cecilia Kibatchko	35	Head	Seamstress	Russia
33	Mary Kibatchko	15	Daughter	Student	Russia
34	Diedre Zumanoff	27	Roomer	Seamstress	Russia
35	Julien Lichushigo	31	Head	Laundry Worker	France
36	Alicia Lichushigo	30	Wife	Laundry Worker	France
37	R.C. Stewart	57	Head	Physician	Russia
38	Julia Stewart	45	Wife	Nurse	Poland
39	Robert S. Stewart	21	Son	Student	China
40	George O. Stewart	13	Son	—	China
41	Rachin Powell	20	Roomer	Laborer	China
42	T.J. Prizetaky	41	Roomer	Stevedore	Russia
43	Ben Wigg	45	Roomer	Baker	France
44	Frank Lochmister	40	Roomer	Laborer	Germany

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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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