William Koch — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · Kings, New York

Our Model Tree links this William Koch across the 1920 and 1930 US Censuses in Kings, New York (XGBoost, ~Confirmed) — first a son (b.~1908), then head of a 4-person household.

Age 22 b. ~1908 Male Son Born: New York Single

1930 Census Record Details

Census Year	1930
Location	Kings, New York
Surname	Koch
Given Name	William G.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	22
Marital Status	Single
Birthplace	New York
Father's Birthplace	Germany
Mother's Birthplace	New York
Additional Details
Occupation	Clerk
Industry	Mailing Goods
Class of Worker	W
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york
Occupation	Clerk
Township / Ward	Borough Of Brooklyn
Est. Birth Year	~1908

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.

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

Name	Relation to head	Relative to William	Age	Birth yr
Alice Koch	Daughter	—	18	~1912
William Koch	Head	—	58	~1872
William Koch	Son	—	22	~1908
Anna Koch	Spouse	—	52	~1878

Census Appearances

1920

Kings, New …

Son, age 11

Kings, New York · implied b. ~1909 — 4 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Koch
Given Name	William G.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	11
Marital Status	Single
Birthplace	New York
Father's Birthplace	Germany
Mother's Birthplace	New York
Can Read	Yes
Can Write	Yes
Speaks English	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

1930

Kings, New …

Son, age 22

Kings, New York · implied b. ~1908 — 4 household members

Surname	Koch
Given Name	William G.
Relationship to Head	Son
Sex	M
Color / Race	White
Age	22
Marital Status	Single
Birthplace	New York
Father's Birthplace	Germany
Mother's Birthplace	New York
Occupation	Clerk
Industry	Mailing Goods
Class of Worker	W
Can Read/Write	Yes
Birth State	New York
Birth Country	United States
Birthplace (normalized)	new york

Model Tree

Linked across censuses

Our Model Tree links William Koch across 2 US Census years (1920 and 1930) in Kings, New York, using XGBoost record linkage.

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This person

Anchor record

William Koch

Son · 1930 · age 22 · b. ~1908 · New York

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Sibling

Alice Koch

Sibling · 1930 · age 18

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 — Kings, New York Open full size

Page Contents

50 people indexed on this census page (ia:1930:newyorkcensus00reel1509:0015)

Line	Name	Age	Relation	Occupation	Birthplace
1	John Waley	50	Head	Post Office Dept	New York
2	Kathryn Waley	48	Wife	—	New York
3	Charles Waley	20	Son	—	New York
4	William Patterson	29	Head	Salesman	Massachusetts
5	Mary W. Patterson	30	Wife	—	Massachusetts
6	William Jr. Patterson	1	Son	—	Massachusetts
7	William Koch	58	Head	—	Germany
8	Anna Koch	52	Wife	—	New York
9	William G. Koch THIS PERSON	22	Son	Clerk	New York
10	Alice M. Koch	18	Daughter	Secretary	New York
11	Johan Johansen	42	Head	Carpenter	Norway
12	Pauline Johansen	39	Wife	—	Norway
13	Olga Mattheisen	19	Boarder	—	Norway
14	Arne Meyer	48	Head	Draughtsman	Norway
15	Hussine Meyer	43	Wife	—	Norway
16	Harold Meyer	21	Son	College	New York
17	Claus Meyer	15	Son	—	New York
18	Paul G. Larsen	39	Head	Salesman	New York
19	Elsie Larsen	23	Wife	—	New York
20	Robert Larsen	24	Brother	Clerk	New York
21	Hattie Larsen	35	Sister	—	New York
22	John L. Dunston	28	Head	Minister	England
23	Edith Dunston	28	Wife	—	Maine
24	Elsie Sirles	19	Niece	—	Maine
25	Thomas Wilson	41	Head	Laundry	New York
26	Anna Wilson	42	Wife	—	New York
27	Rose Mary Wilson	18	Daughter	Clerk	New York
28	Helen Wilson	15	Daughter	—	New York
29	John Wilson	12	Son	—	New York
30	Isabelle Wilson	5	Daughter	—	New York
31	Alice Gellone	50	Head	Fin Lady	Ireland
32	Irene Gonsalves	24	Niece	—	New York
33	Julietta Gonsalves	30	Niece	Nurse	New York
34	Thomas J. Cahill	31	Head	Fire Department	New York
35	Elizabeth Cahill	28	Wife	—	New York
36	Patricia Cahill	4	Daughter	—	New York
37	Thomas Cahill	1	Son	—	New York
38	Anthony Lanaro	31	Head	Salesman	Italy
39	May Lanaro	28	Wife	—	New York
40	Emily Lanaro	7	Daughter	—	New York
41	Louis Lanaro	5	Son	—	New York
42	Antonio Quagliarello	43	Head	Butcher	Italy
43	Jasper Quagliarello	41	Wife	—	Italy
44	Joseph Quagliarello	19	Son	Butcher	New York
45	Vito Quagliarello	17	Son	—	New York
46	Mary Quagliarello	15	Daughter	—	New York
47	John Quagliarello	13	Daughter	—	New York
48	Anna Quagliarello	9	Daughter	—	New York
49	Yolanda Quagliarello	6	Son	—	New York
50	John Quagliarello	3	Son	—	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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