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John Mccormick — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Francisco, California
Our Model Tree links this John Mccormick across the 1920, 1930 and 1940 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Anna & John — first a son (b.~1902), then head of a 6-person household.
Age 28
b. ~1902
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Clerk |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1902 |
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 |
|---|---|---|---|---|
| Aileen Mccormick | Daughter | — | 27 | ~1903 |
| Ursula Mccormick | Daughter | — | 22 | ~1908 |
| Anna Mccormick | Head | — | 55 | ~1875 |
| John Mccormick | Son | — | 28 | ~1902 |
| Edward Mccormick | Son | — | 15 | ~1915 |
| Patrick Mccormick | Son | — | 17 | ~1913 |
Census Appearances
1920
San Francisco, …
Son, age 18
San Francisco, California · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Messenger |
| Industry | Red Cross |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 28
San Francisco, California · implied b. ~1902 — 6 household members
| Surname | McCormick |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
Head, age 38
San-Francisco-County, California · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | John B. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Occupation | Conductor |
| Industry | Public Railway |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1875 |
| Highest Grade | H-2 |
| 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 John Mccormick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Anna Mccormick (~0.92 confidence) and father John Mccormack (~0.92 confidence) and mother Annie Mccormack (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Anna Mccormick
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
John Mccormack
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Annie Mccormack
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mccormick
Son · 1930 · age 28 · b. ~1902 · California
★ You are viewing this record
Sibling
Edward Mccormick
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ursula Mccormick
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Mccormick
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Aileen Mccormick
Sibling · 1930 · age 27
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
48 people indexed on this census page (ia:1930:californiacensus00reel201:0055)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lord E Carpenter | 50 | Head | Salesman | Indiana |
| 2 | Helen G Carpenter | 36 | Wife | Saleslady | Nebraska |
| 3 | James E Carpenter | 10 | Daughter | None | Colorado |
| 4 | Bert E Wilson | 47 | Head | Publicity | Canada-English |
| 5 | Maud M Wilson | 49 | Wife | None | Iowa |
| 6 | Jessie Wilson | 74 | Father | Retired | Canada-English |
| 7 | William Mccreary | 72 | Father-in-law | Retired | Canada-English |
| 8 | Albert E Warring | 60 | Head | Seller-Runner | Pennsylvania |
| 9 | Mae E Warring | 42 | Wife | None | California |
| 10 | Catherine E Freiburg | 66 | Head | Packer | Germany |
| 11 | August E Freiburg | 30 | Son | None | New York |
| 12 | Hans Schwarzmann | 66 | Head | Clerk | New York |
| 13 | Dorothy Schwarzmann | 65 | Wife | None | California |
| 14 | William H Bedell | 62 | Head | Carpet Layer | New Jersey |
| 15 | Annie Bedell | 68 | Wife | None | Massachusetts |
| 16 | Joseph Voto | 31 | Head | Labor | Italy |
| 17 | Marie V Voto | 22 | Wife | None | Italy |
| 18 | Joseph H Raymond | 42 | Head | Asst Cashier | California |
| 19 | Julie A Raymond | 35 | Wife | None | California |
| 20 | Joseph H Jr Raymond | 6 | Son | None | California |
| 21 | Pauline Raymond | 1 | Daughter | None | California |
| 22 | Patrick T O'Neil | 62 | Head | Janitor | Irish Free State |
| 23 | Nora G O'Neil | 63 | Wife | None | Irish Free State |
| 24 | Timothy P O'Neil | 26 | Son | Clerk | California |
| 25 | Margaret T O'Neil | 24 | Daughter | Stenographer | California |
| 26 | Weston V Wise | 50 | Head | Post Office | California |
| 27 | Lilla Wise | 43 | Wife | None | California |
| 30 | Margaret E Dolan | 33 | Head | Stenographer | California |
| 31 | Catherine C Dolan | 31 | Sister | Comptometer Op | California |
| 32 | Mary Dolan | 65 | Mother | Retired | Ireland-Free State |
| 33 | James A Symon | 54 | Head | Machinist | Scotland |
| 34 | Louise Symon | 54 | Wife | None | California |
| 35 | Eva L Symon | 18 | Daughter | None | California |
| 36 | Gladys L Symon | 18 | Daughter | None | California |
| 37 | Edward F Duller | 72 | Head | Night Watchman | Massachusetts |
| 38 | Annie Duller | 72 | Wife | None | Georgia |
| 39 | Joseph G Gardner | 54 | Head | None | Tennessee |
| 40 | Mary F Benton | 53 | Roomer | Milliner | Missouri |
| 41 | Harry S Richardson | 56 | Roomer | Osteopathic | California |
| 42 | Anna Mccormick | 55 | Head | Saleswoman | California |
| 43 | John Mccormick THIS PERSON | 28 | Son | Clerk | California |
| 44 | Aileen M Mccormick | 27 | Daughter | Secretary | California |
| 45 | Ursula B Mccormick | 22 | Daughter | Stenographer | California |
| 46 | Patrick W Mccormick | 17 | Son | None | California |
| 47 | Edward J Mccormick | 15 | Son | None | California |
| 48 | Mary J Cardoza | 45 | Head | Stenographer | California |
| 49 | Violet M Cardoza | 38 | Sister | Stenographer | California |
| 50 | Alfred A Cardoza | 60 | Brother | Clerk | California |
Related Census Records
Pedigree Summary
John + 4 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)