JH
John Hahn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this John Hahn across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Hahn |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Irvington |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | sprayer |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 458 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Sprayer |
| Township / Ward | Irvington |
| Est. Birth Year | ~1917 |
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 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Virginia Hahn | Daughter | — | 28 | ~1912 |
| August Hahn | Head | — | 53 | ~1887 |
| John Hahn | Son | — | 23 | ~1917 |
| Mary Hahn | Spouse | — | 49 | ~1891 |
| Harry Hahn | Son | — | 19 | ~1921 |
Census Appearances
1930
Essex, New …
Son, age 12
Essex, New Jersey · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hahn |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 23
Essex-County, New Jersey · implied b. ~1917 — 5 household members
| Surname | Hahn |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Irvington |
| 1935 Residence (County) | Essex |
| Occupation | sprayer |
| Industry | Automobile |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 458 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Hahn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hahn
Son · 1940 · age 23 · b. ~1917 · New Jersey
★ You are viewing this record
Sibling
Virginia Hahn
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Hahn
Sibling · 1940 · age 19
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
1940 US Federal Census — Essex-County, New Jersey
Open full size
1940 US Federal Census — Essex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02335-00023)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Arlane Greulich | 4 | daughter | — | New Jersey |
| 42 | Minnie Krauss | 63 | mother-in-law | — | Hungary |
| 43 | Victor Markovich | 51 | head | Business Man | Poland |
| 44 | Josephine Markovich | 41 | wife | — | New Jersey |
| 45 | Henry Markovich | 18 | son | Printer | New Jersey |
| 46 | Frances Markovich | 11 | daughter | — | New Jersey |
| 47 | Joseph Markovich | 10 | son | — | New Jersey |
| 48 | Grace Vittord | 49 | head | — | New York |
| 49 | Joseph Wild | 80 | head | — | England |
| 50 | Anna Wild | 83 | wife | — | England |
| 51 | Charles Winkler | 68 | head | — | Germany |
| 52 | Rosette Winkler | 66 | wife | — | Switzerland |
| 53 | Paul Hoffmann | 30 | head | Professor | Germany |
| 54 | Dorothy Hoffmann | 34 | wife | — | New Jersey |
| 55 | Paul Hoffmann | 4 | son | — | New Jersey |
| 56 | Clara Storm | 75 | head | — | Germany |
| 57 | Charles Albanese | 37 | head | Carpenter | Italy |
| 58 | Clara Albanese | 35 | wife | — | New Jersey |
| 59 | Dominic Albanese | 12 | son | — | New Jersey |
| 60 | Raymond Albanese | 10 | son | — | Ohio |
| 61 | Julia Albanese | 7 | daughter | — | New Jersey |
| 62 | Morris Albanese | 4 | son | — | New Jersey |
| 63 | Mary C. Loeffler | 74 | head | — | Penn. |
| 64 | Edward Loeffler | 33 | son | Machinist | New Jersey |
| 65 | Jerry Carchio | 49 | head | File Maker | Italy |
| 66 | Margaret Carchio | 47 | wife | — | New Jersey |
| 67 | Geraldine Carchio | 23 | daughter | Salesgirl | New Jersey |
| 68 | Ralph Carchio | 22 | son | File Maker | New Jersey |
| 69 | Rose Carchio | 16 | daughter | — | New Jersey |
| 70 | Anthony Carchio | 16 | son | — | New Jersey |
| 71 | Ernest Rischel | 76 | head | Tanner | Germany |
| 72 | Ida Rischel | 41 | daughter | — | New Jersey |
| 73 | Charles Rayman | 42 | head | Truck Driver | New Jersey |
| 74 | Helen Rayman | 32 | wife | — | New Jersey |
| 75 | Charles Rayman | 8 | son | — | New Jersey |
| 76 | August Hahn | 53 | head | Lumberman | New Jersey |
| 77 | Mary Hahn | 49 | wife | — | New Jersey |
| 78 | Virginia Hahn | 28 | daughter | Mach. Operator | New Jersey |
| 79 | John Hahn THIS PERSON | 23 | son | Sprayer | New Jersey |
| 80 | Harry Hahn | 19 | son | Operator | New Jersey |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)