JK
John Kaiser — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Kaiser across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1916), then head of a 7-person household.
Age 14
b. ~1916
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Kaiser |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Rumania |
| Mother's Birthplace | Rumania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| 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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Rose Kaiser | Spouse | — | 43 | ~1887 |
| Paul Kaiser | Son | — | 16 | ~1914 |
| John Kaiser | Son | — | 14 | ~1916 |
| John Kaiser | Head | — | 46 | ~1884 |
| Rosa Berger | Other | — | 68 | ~1862 |
| Anna Kaiser | Daughter | — | 12 | ~1918 |
| Mary Kaiser | Daughter | — | 17 | ~1913 |
Census Appearances
1930
Cook, Illinois
Son, age 14
Cook, Illinois · implied b. ~1916 — 7 household members
| Surname | Kaiser |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Rumania |
| Mother's Birthplace | Rumania |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 24
Cook-County, Illinois · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kiser |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | CHICAGO |
| 1935 Residence (County) | COOK |
| Occupation | Salesman |
| Industry | Grocery |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 1200 |
| Highest Grade | H-2 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Kaiser across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Kaiser
Son · 1930 · age 14 · b. ~1916 · Illinois
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Sibling
Paul Kaiser
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Kaiser
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kaiser
Sibling · 1930 · age 17
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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
13 people indexed on this census page (ia:1930:illinoiscensus00reel485:0175)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Kaiser | 46 | Head | Laborer | Rumania |
| 52 | Rose Kaiser | 43 | Wife | — | Rumania |
| 53 | John Kaiser THIS PERSON | 14 | Son | — | Illinois |
| 54 | Mary Kaiser | 17 | Daughter | — | Illinois |
| 55 | Paul Kaiser | 16 | Son | — | Illinois |
| 56 | Anna Kaiser | 12 | Daughter | — | Illinois |
| 57 | Rosa Berger | 68 | Mother-in-law | — | Rumania |
| 58 | Casper Kaiser | 44 | Head | Laborer | Rumania |
| 59 | Rosa Kaiser | 39 | Wife | — | Rumania |
| 60 | John Kaiser | 18 | Son | — | Illinois |
| 61 | Frank Kaiser | 17 | Son | — | Illinois |
| 62 | Anna Kaiser | 9 | Daughter | — | Illinois |
| 63 | John Kaiser | 5 | Son | — | Illinois |
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)