JK
John Kovach — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Hudson, New Jersey
Our Model Tree links this John Kovach across the 1920 and 1930 US Censuses in Hudson, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 15-person household.
Age 14
b. ~1916
Male
Son
Born: New Jersey
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Hudson, New Jersey |
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1916 |
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.
15 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Joseph Kovach | Son | — | 14 | ~1916 |
| Helen Kovach | Daughter | — | 17 | ~1913 |
| Robert Kovach | Son | — | 14 | ~1916 |
| Joseph Kovach | Son | — | 14 | ~1916 |
| Anna Kovach | Spouse | — | 41 | ~1889 |
| Tony Kovach | Son | — | 14 | ~1916 |
| John Kovach | Head | — | 43 | ~1887 |
| Anna Kovach | Daughter | — | 14 | ~1916 |
| John Kovach | Son | — | 19 | ~1911 |
| John Kovach | Son | — | 14 | ~1916 |
| Helen Kovach | Daughter | — | 14 | ~1916 |
| Bertha Kovach | Daughter | — | 14 | ~1916 |
| Mike Kovach | Son | — | 15 | ~1915 |
| Robert Kovach | Son | — | 14 | ~1916 |
| Mike Kovach | Son | — | 14 | ~1916 |
Census Appearances
1920
Hudson, New …
Son, age 3
Hudson, New Jersey · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Slovak |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Son, age 14
Hudson, New Jersey · implied b. ~1916 — 15 household members
| Surname | Kovach |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Austria |
| Mother's Birthplace | Austria |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 2 US Census years (1920 and 1930) in Hudson, New Jersey, using XGBoost record linkage.
Show:
This person
Anchor record
John Kovach
Son · 1930 · age 14 · b. ~1916 · New Jersey
★ You are viewing this record
Sibling
Helen Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Tony Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mike Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bertha Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Kovach
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kovach
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kovach
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mike Kovach
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 — Hudson, New Jersey
Open full size
1930 US Federal Census — Hudson, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1375:0971)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | — | None | — | — | — |
| 2 | — | None | — | — | — |
| 3 | John Higgins | 58 | Head | Electrician | New Jersey |
| 4 | Mary Higgins | 57 | Wife | — | New Jersey |
| 5 | Mary Higgins | 31 | Daughter | Bookkeeper | New Jersey |
| 6 | Alice Higgins | 27 | Daughter | — | New Jersey |
| 7 | Eugene Higgins | 21 | Son | Clerk | New Jersey |
| 8 | Martha Higgins | 18 | Daughter | — | New Jersey |
| 9 | Burke | 80 | Martha | — | New Jersey |
| 10 | John Heslin | 51 | Head | Order Clerk | Russia |
| 11 | Annie Heslin | 51 | Wife | Proprietor | New Jersey |
| 12 | John J. Heslin | 28 | Son | Foreman | New Jersey |
| 13 | Joseph Heslin | 21 | Son | Foreman | New Jersey |
| 14 | Alice Heslin | 14 | Daughter | — | New Jersey |
| 15 | Catherine Heslin | 14 | Daughter | — | New Jersey |
| 16 | Marie Heslin | 14 | Daughter | — | New Jersey |
| 17 | David Heslin | 14 | Son | — | New Jersey |
| 18 | Robert Heslin | 14 | Son | — | New Jersey |
| 19 | Patrick Lynch | 55 | Head | Sheet Hand | Ireland |
| 20 | Catherine Lynch | 51 | Wife | — | Ireland |
| 21 | Catherine Lynch | 22 | Daughter | Clerk | New Jersey |
| 22 | Alice Lynch | 21 | Daughter | Card Tender | New Jersey |
| 23 | John Lynch | 14 | Son | — | New Jersey |
| 24 | James Lynch | 14 | Son | — | New Jersey |
| 25 | John Mcgrath | 59 | Head | Laborer | Ireland |
| 26 | Catherine Mcgrath | 54 | Wife | — | Ireland |
| 27 | John Mcgrath | 26 | Son | Laborer | New Jersey |
| 28 | James Mcgrath | 21 | Son | Laborer | New Jersey |
| 29 | Alice Mcgrath | 14 | Daughter | — | New Jersey |
| 30 | Marie Mcgrath | 14 | Daughter | — | New Jersey |
| 31 | David Mcgrath | 14 | Son | — | New Jersey |
| 32 | Robert Mcgrath | 14 | Son | — | New Jersey |
| 33 | Catherine Mcgrath | 14 | Daughter | — | New Jersey |
| 34 | Alice Mcgrath | 14 | Daughter | — | New Jersey |
| 35 | Marie Mcgrath | 14 | Daughter | — | New Jersey |
| 36 | John Kovach | 43 | Head | Laborer | Austria |
| 37 | Anna Kovach | 41 | Wife | — | Austria |
| 38 | John Kovach | 19 | Son | Laborer | New Jersey |
| 39 | Helen Kovach | 17 | Daughter | — | New Jersey |
| 40 | Mike Kovach | 15 | Son | — | New Jersey |
| 41 | Joseph Kovach | 14 | Son | — | New Jersey |
| 42 | Robert Kovach | 14 | Son | — | New Jersey |
| 43 | Bertha Kovach | 14 | Daughter | — | New Jersey |
| 44 | Tony Kovach | 14 | Son | — | New Jersey |
| 45 | John Kovach THIS PERSON | 14 | Son | — | New Jersey |
| 46 | Anna Kovach | 14 | Daughter | — | New Jersey |
| 47 | Helen Kovach | 14 | Daughter | — | New Jersey |
| 48 | Mike Kovach | 14 | Son | — | New Jersey |
| 49 | Joseph Kovach | 14 | Son | — | New Jersey |
| 50 | Robert Kovach | 14 | Son | — | New Jersey |
Related Census Records
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)