TM
Thomas Mccormick — 1930 US Census Record
Model Tree available1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Thomas Mccormick across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed), with identified parents Samuel & Thomas — first a son (b.~1909), then head of a 9-person household.
Age 21
b. ~1909
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | McCormick |
| Given Name | Thomas K. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Clerk |
| Industry | Retail Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1909 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Irwin Mccormick | Son | — | 25 | ~1905 |
| Thomas Mccormick | Son | — | 21 | ~1909 |
| Lorraine Coakley | Other | — | 1 | ~1929 |
| Susan Mccormick | Spouse | — | 51 | ~1879 |
| Thomas Mccormick | Head | — | 51 | ~1879 |
| Catherine Coakley | Daughter | — | 24 | ~1906 |
| Eileen Mccormick | Daughter | — | 16 | ~1914 |
| Wilma Mccormick | Son | — | 19 | ~1911 |
| Joseph Mccormick | Son | — | 14 | ~1916 |
Census Appearances
1920
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 21
Cook, Illinois · implied b. ~1909 — 9 household members
| Surname | McCormick |
| Given Name | Thomas K. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | England |
| Occupation | Clerk |
| Industry | Retail Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 30
Cook-County, Illinois · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormack |
| Given Name | Thomas F. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago Ridge village |
| 1935 Residence (County) | Cook |
| Occupation | steel worker |
| Industry | Steel car repair |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1378 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| 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 Thomas Mccormick across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Samuel Mccormack (~0.92 confidence) and father Thomas Mccormack (~0.92 confidence) and father Thomas Mccormick (~0.92 confidence) and mother Susan Mccormack (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Samuel Mccormack
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Thomas Mccormack
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Thomas Mccormick
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Susan Mccormack
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Mccormick
Son · 1930 · age 21 · b. ~1909 · Illinois
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Sibling
Catherine Coakley
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mccormick
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Mccormick
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wilma Mccormick
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irwin Mccormick
Sibling · 1930 · age 25
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
50 people indexed on this census page (ia:1930:illinoiscensus00reel443:0413)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William Watson | 4 | Son | — | Illinois |
| 52 | Elizabeth Watson | 3 | Daughter | — | Illinois |
| 53 | Dolores Watson | 2 | Daughter | — | Illinois |
| 54 | James F. Mcfarland | 38 | Head | Executive | Colorado |
| 55 | Ellen P. Mcfarland | 33 | Wife | — | Canada English |
| 56 | J. Paul Gordon | 9 | Son | — | Michigan |
| 57 | Robert L. Gordon | 7 | Son | — | Michigan |
| 58 | Thomas K. Mccormick | 51 | Head | Clerk | Illinois |
| 59 | Susan J. Mccormick | 51 | Wife | — | England |
| 60 | Irwin J. Mccormick | 25 | Son | Clerk | Illinois |
| 61 | Thomas K. Jr. Mccormick THIS PERSON | 21 | Son | Clerk | Illinois |
| 62 | Catherine Coakley | 24 | Daughter | — | Illinois |
| 63 | Lorraine Coakley | 1 | Granddaughter | — | Illinois |
| 64 | Wilma G. Mccormick | 19 | Son | Clerk | Illinois |
| 65 | Eileen G. Mccormick | 16 | Daughter | — | Illinois |
| 66 | Joseph Mccormick | 14 | Son | — | Illinois |
| 67 | Charles F. Mauntler | 69 | Head | — | Ohio |
| 68 | Bert J. Barnes | 54 | Head | Inspector | Michigan |
| 69 | Elizabeth Barnes | 47 | Wife | — | Iowa |
| 70 | Robert J. Barnes | 20 | Son | Service Man | Illinois |
| 71 | Lila Barnes | 31 | Sister | Bookkeeper | Michigan |
| 72 | Hayden Sweeney | 26 | Roomer | Traffic Officer | Illinois |
| 73 | Robert Garrity | 79 | Head | President | Ohio |
| 74 | Edwin D. Garrity | 31 | Son | Printer | Illinois |
| 75 | Helen Garrity | 27 | Daughter | — | Illinois |
| 76 | Max Martin | 65 | Head | — | Germany |
| 77 | Margaret Martin | 59 | Wife | — | Germany |
| 78 | Herbert Martin | 32 | Son | Accountant | Germany |
| 79 | Albert Martin | 26 | Son | Salesman | Germany |
| 80 | Johanna Martin | 36 | Daughter | Dressmaker | Germany |
| 81 | Robert A. Martin | 21 | Son | — | Germany |
| 82 | Anna D. Martin | 17 | Daughter | Apprentice | Germany |
| 83 | Joseph Davis | 54 | Head | Engineer | New York |
| 84 | Helen F. Davis | 49 | Wife | — | Wisconsin |
| 85 | Mildred C. Davis | 30 | Daughter | — | Illinois |
| 86 | Frank Pielert | 67 | Head | Meat Business | New Jersey |
| 87 | Flora A. Pielert | 68 | Wife | — | New York |
| 88 | Max Pielert | None | Roomer | — | — |
| 89 | Margaret Martha Pielert | None | Roomer | — | — |
| 90 | — | None | Head | — | — |
| 91 | — | None | — | — | — |
| 92 | Imma Reichen | 37 | Lodger | Practical Nurse | Illinois |
| 93 | Curtis R. Gartside | 35 | Head | Passenger Agent | Kansas |
| 94 | Mary E. Gartside | 39 | Wife | — | South Dakota |
| 95 | Chris Butterhouse | 65 | Head | Carpenter | Illinois |
| 96 | Ella F. Butterhouse | 56 | Wife | — | Illinois |
| 97 | James R. Butterhouse | 29 | Son | Bookkeeper | Illinois |
| 98 | John L. Fowler | 67 | Head | Physician | Illinois |
| 99 | Alma L. Fowler | 53 | Wife | — | Kentucky |
| 100 | Alma E. Fowler | 37 | Daughter | Ad Solicitor | Kentucky |
Pedigree Summary
Thomas + 5 siblings
Gen 1 · 4 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)