JH
John Hahn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Lake, Indiana
Our Model Tree links this John Hahn across the 1930 and 1940 US Censuses in Lake, Indiana (XGBoost, ~Confirmed) — first a head (b.~1876), then head of a 6-person household.
Age 54
b. ~1876
Male
Head
Born: Poland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Lake, Indiana |
| Surname | Hahn |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 23 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Veteran | No |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
| Occupation | Laborer |
| Township / Ward | Hammond City |
| Est. Birth Year | ~1876 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Wanda Hahn | Daughter | — | 17 | ~1913 |
| Milton Hahn | Son | — | 14 | ~1916 |
| Helen Hahn | Daughter | — | 19 | ~1911 |
| Sophia Hahn | Spouse | — | 50 | ~1880 |
| Walter Hahn | Son | — | 15 | ~1915 |
| John Hahn | Head | — | 54 | ~1876 |
Census Appearances
1930
Lake, Indiana
Head, age 54
Lake, Indiana · implied b. ~1876 — 6 household members
| Surname | Hahn |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Poland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 23 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | Laborer |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Polish |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Veteran | No |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
1940
Lake-County, Indiana
Head, age 64
Lake-County, Indiana · implied b. ~1876 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Han |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Poland |
| 1935 Residence (City) | Hammond City |
| Naturalization Status | First papers filed |
| Occupation | laborer |
| Industry | steam railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 0 |
| 1935 Residence | Same place |
| Birth Country | Poland |
| Birthplace (normalized) | poland |
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.
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This person
Anchor record
John Hahn
Head · 1930 · age 54 · b. ~1876 · Indiana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Lake, Indiana
Open full size
1930 US Federal Census — Lake, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel602:0158)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Anna Siwak | 27 | Wife | — | Austria-Hungary |
| 52 | Mike Jr. Siwak | 5 | Son | — | New York |
| 53 | Anna Siwak | 4 | Daughter | — | New York |
| 54 | Lester J. Johnson | 24 | Head | Agent | Indiana |
| 55 | Dorothy E. Johnson | 23 | Wife | — | Indiana |
| 56 | Barbara J. Johnson | 2 | Daughter | — | Indiana |
| 57 | Lester Jr. Johnson | 0 | Son | — | Indiana |
| 58 | John F. Hahn THIS PERSON | 54 | Head | Laborer | Poland |
| 59 | Sophia Hahn | 50 | Wife | — | Poland |
| 60 | Helen A. Hahn | 19 | Daughter | Laborer | Illinois |
| 61 | Wanda A. Hahn | 17 | Daughter | — | Illinois |
| 62 | Walter G. Hahn | 15 | Son | — | Illinois |
| 63 | Milton J. Hahn | 14 | Son | — | Illinois |
| 64 | Agnes Schwandt | 46 | Head | — | Wisconsin |
| 65 | Chester R. Schwandt | 23 | Son | Truck Driver | Indiana |
| 66 | Charles E. Schwandt | 17 | Son | — | Indiana |
| 67 | Raymond Schwandt | 14 | Son | — | Indiana |
| 68 | Florence Schwandt | 12 | Son | — | Indiana |
| 69 | Louise Schwandt | 5 | Niece | — | Indiana |
| 70 | Raymond Sterling | 21 | Boarder | Truck Driver | Indiana |
| 71 | Helen L. Sterling | 22 | Daughter | Sales Lady | Indiana |
| 72 | Andrew Starks | 30 | Head | Manager | Illinois |
| 73 | Stella Starks | 30 | Wife | — | Illinois |
| 74 | Iva Walker | 41 | Head | Sales Lady | Indiana |
| 75 | Jane Walker | 18 | Daughter | — | Indiana |
| 76 | Julius Shatkowski | 45 | Head | Brick Layer | Poland |
| 77 | Kinga Shatkowski | 44 | Wife | — | Poland |
| 78 | Theodore Shatkowski | 21 | Son | Brick Layer | Illinois |
| 79 | Henry Shatkowski | 15 | Son | Mechanic | Illinois |
| 80 | Luba Shatkowski | 14 | Daughter | — | Wisconsin |
| 81 | Victor Shatkowski | 13 | Son | — | Illinois |
| 82 | Joseph Donad | 45 | Head | Carpenter | Germany |
| 83 | Helen Donad | 43 | Wife | Laborer | Austria-Hungary |
| 84 | Mary H. Donad | 19 | Daughter | — | Michigan |
| 85 | Catherine J. Donad | 17 | Daughter | — | Michigan |
| 86 | Jessie Mayer | 47 | Head | Manager | New York |
| 87 | Jessie Parent | 28 | Boarder | — | Illinois |
| 88 | David P. Parent | 10 | Nephew | — | Illinois |
| 89 | Russie C. Rich | 38 | Lodger | Laborer | Maine |
| 90 | William H. Harris | 42 | Lodger | Laborer | Illinois |
| 91 | Charles W. Robinson | 44 | Head | Laborer | Ohio |
| 92 | Pauline A. Robinson | 35 | Wife | — | Michigan |
| 93 | Elizabeth M. Robinson | 14 | Daughter | — | Michigan |
| 94 | Frank H. Robinson | 11 | Son | — | Michigan |
| 95 | Adolphus W. Robinson | 10 | Son | — | Michigan |
| 96 | Lawrence R. Robinson | 8 | Son | — | Michigan |
| 97 | Hazel M. Robinson | 4 | Daughter | — | Michigan |
| 98 | Gladys I. Robinson | 1 | Daughter | — | Michigan |
| 99 | Joseph D. Shulenberger | 27 | Head | Fireman | Illinois |
| 100 | Gertrude Shulenberger | 26 | Wife | — | Michigan |
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)