JK
John Kovach — 1920 US Census Record
Linked across censuses1920 United States Federal Census · New York, New York
Our Model Tree links this John Kovach across the 1920, 1930 and 1940 US Censuses in New York, New York (XGBoost, ~Confirmed) — first a head (b.~1887), then head of a 5-person household.
Age 33
b. ~1887
Male
Head
Born: Austria Hungary
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | New York, New York |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Austria Hungary |
| Year of Immigration | 1912 |
| Naturalization Status | Alien |
| Father's Birthplace | Austria Hungary |
| Mother's Birthplace | Austria Hungary |
| Additional Details | |
| Occupation | Longshoreman |
| Industry | Pier |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Slovak |
| Home Owned/Rented | R |
| Birth Country | Austria-Hungary |
| Birthplace (normalized) | austria hungary |
| Occupation | Longshoreman |
| Township / Ward | Manhattan |
| Est. Birth Year | ~1887 |
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 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Kovach | Head | — | 33 | ~1887 |
| Anna Kovach | Daughter | — | ~1920 | |
| Katie Kovach | Spouse | — | 22 | ~1898 |
| George Zabransky | Other | — | 39 | ~1881 |
| Michael Kovach | Son | — | 2 | ~1918 |
Census Appearances
1920
New York, …
Head, age 33
New York, New York · implied b. ~1887 — 5 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Austria Hungary |
| Year of Immigration | 1912 |
| Naturalization Status | Alien |
| Father's Birthplace | Austria Hungary |
| Mother's Birthplace | Austria Hungary |
| Occupation | Longshoreman |
| Industry | Pier |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Slovak |
| Home Owned/Rented | R |
| Birth Country | Austria-Hungary |
| Birthplace (normalized) | austria hungary |
1930
Union, New …
Head, age 43
Union, New Jersey · implied b. ~1887 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovacs |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Austria Hungary |
| Naturalization Status | First papers filed |
| Year of Immigration | 1916 |
| Age at First Marriage | 19 |
| Father's Birthplace | Austria Hungary |
| Mother's Birthplace | Austria Hungary |
| Occupation | Steel Mill |
| Industry | W |
| Can Read/Write | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Value / Rent | 6000 |
| Radio Set | R |
| Birth Country | Austria-Hungary |
| Birthplace (normalized) | austria hungary |
1940
Queens-County, New …
Head, age 53
Queens-County, New York · implied b. ~1887 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kavach |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Austria Hungary |
| 1935 Residence (City) | New York |
| 1935 Residence (County) | Queens |
| Naturalization Status | Naturalized |
| Occupation | Carpenter |
| Industry | Building Const |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 308 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Austria-Hungary |
| Birthplace (normalized) | austria hungary |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links John Kovach across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Kovach
Head · 1920 · age 33 · b. ~1887 · New York
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — New York, New York
Open full size
1920 US Federal Census — New York, New York
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1272unit:0051)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Kohn | 40 | Head | Painter | Austria Hungary |
| 52 | Regina Kohn | 38 | Wife | — | Austria Hungary |
| 53 | John Kohn | 16 | Son | Porter | New York |
| 54 | Frank Kohn | 14 | Son | — | New York |
| 55 | Mary Kohn | 9 | Daughter | — | New York |
| 56 | Annie Kohn | 5 | Daughter | — | New York |
| 57 | Stephen Kohn | 2 | Son | — | New York |
| 58 | John Kohn | 27 | Head | Longshoreman | New York |
| 59 | Anna Kohn | 21 | Wife | — | Russia |
| 60 | John Kohn | 1 | Son | — | New York |
| 61 | Leo Kohn | 0 | Son | — | New York |
| 62 | John Kovach THIS PERSON | 33 | Head | Longshoreman | Austria Hungary |
| 63 | Katie Kovach | 22 | Wife | — | Austria Hungary |
| 64 | Michael Kovach | 2 | Son | — | Pennsylvania |
| 65 | Anna Kovach | 0 | Daughter | — | New York |
| 66 | George Zabransky | 39 | Boarder | Dishwasher | Austria Hungary |
| 67 | John Kovach | 29 | Head | Window Cleaner | Austria Hungary |
| 68 | Katie Kovach | 24 | Wife | — | Austria Hungary |
| 69 | Katie Kovach | 4 | Daughter | — | New York |
| 70 | Michael Kovach | 3 | Son | — | New York |
| 71 | John Kovach | 0 | Son | — | New York |
| 72 | Paul Kovach | 30 | Head | Presser | Russia |
| 73 | Anastasia Kovach | 24 | Wife | — | Russia |
| 74 | John Kovach | 5 | Son | — | New York |
| 75 | Paul Kovach | 27 | Boarder | Chauffeur | Russia |
| 76 | Andrew Kuzmak | 32 | Head | Window Cleaner | Hungary |
| 77 | Emma Kuzmak | 32 | Wife | — | Hungary |
| 78 | Mary Kuzmak | 9 | Daughter | — | New York |
| 79 | Helen Kuzmak | 7 | Daughter | — | New York |
| 80 | Paul Kuzmak | 4 | Son | — | New York |
| 81 | Paul Kuzmak | 34 | Head | Laborer | Poland |
| 82 | Teofila Kuzmak | 30 | Wife | — | Poland |
| 83 | Mary Kuzmak | 8 | Daughter | — | New York |
| 84 | Helen Kuzmak | 6 | Daughter | — | New York |
| 85 | Sophie Kuzmak | 4 | Daughter | — | New York |
| 86 | Ignatz Kuzmak | 22 | Boarder | Dishwasher | Poland |
| 87 | Joseph Kuzmak | 35 | Head | Laborer | Poland |
| 88 | Stella Kuzmak | 25 | Wife | — | Poland |
| 89 | John Kuzmak | 5 | Son | — | New York |
| 90 | Frank Kuzmak | 3 | Son | — | New York |
| 91 | Thomas Kuzmak | 22 | Boarder | Cleaner | Poland |
| 92 | Andrew Kuzmak | 35 | Boarder | Cleaner | Poland |
| 93 | John Kuzmak | 35 | Boarder | Cleaner | Poland |
| 94 | Frank Kuzmak | 12 | Head | — | New York |
| 95 | Ellen Kuzmak | 62 | Head | Cleaner | Canada |
| 96 | Claudia Kuzmak | 21 | Daughter | Clerk | New York |
| 97 | Walter Kuzmak | 43 | Son-in-law | — | New York |
| 98 | Mary Kuzmak | 3 | Niece | — | New York |
| 99 | Helen Kuzmak | 0 | Niece | — | New York |
| 100 | John Kuzmak | 21 | Boarder | — | Slovakia |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)