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John Mack — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Mack across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 5-person household.
Age 66
b. ~1864
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 24 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Dry Docks |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Value / Rent | 74 |
| Veteran | 2000 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1864 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Henry Mack | Son | — | 20 | ~1910 |
| Elizabeth Mack | Spouse | — | 58 | ~1872 |
| James Mack | Son | — | 30 | ~1900 |
| Louis Sleeth | Other | — | 24 | ~1906 |
| John Mack | Head | — | 66 | ~1864 |
Census Appearances
1920
Baltimore, Maryland
Head, age 60
Baltimore, Maryland · implied b. ~1860 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Iron Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 66
Baltimore, Maryland · implied b. ~1864 — 5 household members
| Surname | Mack |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 24 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Dry Docks |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Value / Rent | 74 |
| Veteran | 2000 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Other, age 73
Baltimore-City-County, Maryland · implied b. ~1867 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mack |
| Given Name | John H. |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Occupation | Painter |
| Industry | Contractor |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 350 |
| Highest Grade | No 2 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Mack across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mack
Head · 1930 · age 66 · b. ~1864 · Maryland
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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 — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus865unit:0916)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Pauline Zitchell | 21 | Daughter | — | Maryland |
| 52 | Percy G. Boyer | 43 | Head | Proprietor | Maryland |
| 53 | Ida M. Boyer | 30 | Wife | — | Maryland |
| 54 | Rose Stevens | 12 | Step-son | — | Maryland |
| 55 | Esther Stevens | 9 | Step-daughter | — | Maryland |
| 56 | Barbara Boyer | 2 | Daughter | — | Maryland |
| 57 | Thomas Collins | 26 | Head | Laborer | Maryland |
| 58 | Olga Collins | 23 | Wife | — | Maryland |
| 59 | Robert Collins | 2 | Son | — | Maryland |
| 60 | Charles Collins | 0 | Son | — | Maryland |
| 61 | Ernest Larzner | 22 | Head | Operator | Maryland |
| 62 | Virginia Larzner | 21 | Wife | — | Maryland |
| 63 | Joseph Nash | 43 | Head | Laborer | Maryland |
| 64 | Joseph Jr. Nash | 18 | Son | — | Maryland |
| 65 | John Nash | 17 | Son | Laborer | Maryland |
| 66 | Louis Nash | 14 | Son | — | Maryland |
| 67 | Laura Nash | 16 | Daughter | — | Maryland |
| 68 | Virginia Nash | 12 | Daughter | — | Maryland |
| 69 | Jesse Smith | 38 | Head | Deck Hand | Maryland |
| 70 | Grace Smith | 37 | Wife | — | Maryland |
| 71 | Sylvia Smith | 13 | Daughter | — | Maryland |
| 72 | Edith Smith | 11 | Daughter | — | Maryland |
| 73 | Bernetta Smith | 8 | Daughter | — | Maryland |
| 74 | John Mack THIS PERSON | 66 | Head | Laborer | Maryland |
| 75 | Elizabeth Mack | 58 | Wife | — | Maryland |
| 76 | James E. Mack | 30 | Son | Foreman | Maryland |
| 77 | Louis S. Sleeth | 24 | Nephew | Laborer | Maryland |
| 78 | Henry Mack | 20 | Son | Welder | Maryland |
| 79 | Herman Neubert | 40 | Head | Machinist | Maryland |
| 80 | Matilda Neubert | 39 | Wife | — | Maryland |
| 81 | Anna Neubert | 16 | Daughter | — | Maryland |
| 82 | Carl Neubert | 14 | Son | — | Maryland |
| 83 | Carolyn Neubert | 5 | Daughter | — | Maryland |
| 84 | Herman Jr. Neubert | 2 | Son | — | Maryland |
| 85 | Ernest Wuland | 50 | Head | Cabinet Maker | Maryland |
| 86 | Anna Wuland | 48 | Wife | — | Germany |
| 87 | Helen Wuland | 18 | Daughter | Servant | Maryland |
| 88 | Elmer Le Compte | 27 | Son-in-law | Clerk | Maryland |
| 89 | Carolyn Le Compte | 20 | Daughter | Seamstress | Maryland |
| 90 | Ernest Sauble | 28 | Head | Roughsmith | Maryland |
| 91 | Eleanor Sauble | 25 | Wife | — | Maryland |
| 92 | Norman Sauble | 3 | Son | — | Maryland |
| 93 | Willard Sauble | 1 | Son | — | Maryland |
| 94 | Anna Strauss | 65 | Mother-in-law | — | Germany |
| 95 | George Strauss | 67 | Father-in-law | — | Maryland |
| 96 | Frederick Strauss | 20 | Brother-in-law | Laborer | Maryland |
| 97 | Edward Allen | 37 | Head | Proprietor | Maryland |
| 98 | Mary E. Allen | 35 | Wife | — | Maryland |
| 99 | Helen Allen | 14 | Daughter | — | Maryland |
| 100 | Nelda Allen | 13 | Daughter | — | Maryland |
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)