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Joseph Mayer — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this Joseph Mayer across the 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a son (b.~1907), then head of a 27-person household.
Age 23
b. ~1907
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Mayer |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1907 |
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.
27 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Joseph Mayer | Son | — | 23 | ~1907 |
| Agnes Mayer | Daughter | — | 2 | ~1928 |
| Margaret Mayer | Daughter | — | 6 | ~1924 |
| Helen Mayer | Daughter | — | 9 | ~1921 |
| Catherine Mayer | Daughter | — | 7 | ~1923 |
| Clara Mayer | Daughter | — | 29 | ~1901 |
| John Mayer | Son | — | 28 | ~1902 |
| Rose Mayer | Daughter | — | 11 | ~1919 |
| William Mayer | Son | — | 19 | ~1911 |
| Mary Mayer | Spouse | — | 61 | ~1869 |
| Charles Mayer | Son | — | 23 | ~1907 |
| Elizabeth Mayer | Daughter | — | 21 | ~1909 |
| Frances Mayer | Daughter | — | 29 | ~1901 |
| George Mayer | Son | — | 14 | ~1916 |
| Dorothy Mayer | Daughter | — | 21 | ~1909 |
| Theresa Mayer | Daughter | — | 4 | ~1926 |
| Fred Mayer | Son | — | 35 | ~1895 |
| Frank Mayer | Son | — | 12 | ~1918 |
| John Mayer | Head | — | 60 | ~1870 |
| Edward Mayer | Son | — | 8 | ~1922 |
| Louis Mayer | Son | — | 25 | ~1905 |
| Leo Mayer | Son | — | 23 | ~1907 |
| Mary Mayer | Daughter | — | 20 | ~1910 |
| Anna Mayer | Daughter | — | 18 | ~1912 |
| Albert Mayer | Son | — | 11 | ~1919 |
| Henry Mayer | Son | — | 20 | ~1910 |
| Alice Mayer | Daughter | — | 15 | ~1915 |
Census Appearances
1930
San Francisco, …
Son, age 23
San Francisco, California · implied b. ~1907 — 27 household members
| Surname | Mayer |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Other, age 33
San-Francisco-County, California · implied b. ~1907 — 40 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Meyer |
| Given Name | Joseph |
| Relationship to Head | Guest |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Joseph Mayer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joseph Mayer
Son · 1930 · age 23 · b. ~1907 · California
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Sibling
Alice Mayer
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mayer
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Mayer
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Mayer
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Mayer
Sibling · 1930 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mayer
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fred Mayer
Sibling · 1930 · age 35
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Mayer
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Mayer
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mayer
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Mayer
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Mayer
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mayer
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Mayer
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albert Mayer
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mayer
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Mayer
Sibling · 1930 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Mayer
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Mayer
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Mayer
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mayer
Sibling · 1930 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louis Mayer
Sibling · 1930 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mayer
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Mayer
Sibling · 1930 · age 21
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 — San Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
40 people indexed on this census page (ia:1930:californiacensus00reel200:0304)
| Line | Name | Age | Relation | Birthplace |
|---|---|---|---|---|
| 52 | Richard England | 61 | Head | England |
| 53 | Gertrude England | 58 | Wife | California |
| 54 | Richard England | 38 | Son | California |
| 55 | Gertrude England | 28 | Daughter | California |
| 56 | Alice England | 21 | Daughter | California |
| 57 | William England | 18 | Son | California |
| 58 | Robert England | 13 | Son | California |
| 59 | John England | 10 | Son | California |
| 60 | John Mayer | 60 | Head | Germany |
| 61 | Mary Mayer | 61 | Wife | Germany |
| 62 | John Mayer | 28 | Son | California |
| 63 | Mary Mayer | 20 | Daughter | California |
| 64 | William Mayer | 19 | Son | California |
| 65 | George Mayer | 14 | Son | California |
| 66 | Frank Mayer | 12 | Son | California |
| 67 | Edward Mayer | 8 | Son | California |
| 68 | Joseph Mayer THIS PERSON | 23 | Son | California |
| 69 | Charles Mayer | 23 | Son | California |
| 70 | Elizabeth Mayer | 21 | Daughter | California |
| 71 | Anna Mayer | 18 | Daughter | California |
| 72 | Rose Mayer | 11 | Daughter | California |
| 73 | Helen Mayer | 9 | Daughter | California |
| 74 | Catherine Mayer | 7 | Daughter | California |
| 75 | Margaret Mayer | 6 | Daughter | California |
| 76 | Theresa Mayer | 4 | Daughter | California |
| 77 | Agnes Mayer | 2 | Daughter | California |
| 78 | Clara Mayer | 29 | Daughter | California |
| 79 | Frances Mayer | 29 | Daughter | California |
| 80 | Dorothy Mayer | 21 | Daughter | California |
| 81 | Alice Mayer | 15 | Daughter | California |
| 82 | Fred Mayer | 35 | Son | California |
| 83 | Henry Mayer | 20 | Son | California |
| 84 | Albert Mayer | 11 | Son | California |
| 85 | Leo Mayer | 23 | Son | California |
| 86 | Louis Mayer | 25 | Son | California |
| 87 | William Mayer | 51 | Head | California |
| 88 | Elizabeth Mayer | 46 | Wife | California |
| 89 | William Mayer | 22 | Son | California |
| 90 | George Mayer | 15 | Son | California |
| 91 | Charles Mayer | 14 | Son | California |
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)