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Julia Sullivan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Julia Sullivan across the 1920, 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1876), then head of a 5-person household.
Age 54
b. ~1876
Female
Spouse
Born: Pennsylvania
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Sullivan |
| Given Name | Julia G. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 26 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1876 |
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 Julia | Age | Birth yr |
|---|---|---|---|---|
| Harold Sullivan | Son | — | 24 | ~1906 |
| Leo Sullivan | Son | — | 21 | ~1909 |
| Genevieve Sullivan | Daughter | — | 18 | ~1912 |
| Alpheus Sullivan | Head | — | 61 | ~1869 |
| Julia Sullivan | Spouse | — | 54 | ~1876 |
Census Appearances
1920
Cook, Illinois
Spouse, age 44
Cook, Illinois · implied b. ~1876 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Julia |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Cook, Illinois
Spouse, age 54
Cook, Illinois · implied b. ~1876 — 5 household members
| Surname | Sullivan |
| Given Name | Julia G. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 26 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Cook-County, Illinois
Spouse, age 66
Cook-County, Illinois · implied b. ~1874 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Julie |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Julia Sullivan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Julia Sullivan
Spouse · 1930 · age 54 · b. ~1876 · Illinois
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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 — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel430:0909)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry A. Roe | 39 | Head | Mechanical Engineer | Kansas |
| 2 | Irene V. Roe | 36 | Wife | — | Wales |
| 3 | Garnet M. Roe | 12 | Daughter | — | Illinois |
| 4 | Dorothy J. Roe | 9 | Daughter | — | Illinois |
| 5 | Ruth Roe | 8 | Daughter | — | Illinois |
| 6 | Frances S. Roe | 5 | Daughter | — | Illinois |
| 7 | Betty Roe | 1 | Daughter | — | Illinois |
| 8 | Alpheus Sullivan | 61 | Head | Machinist | New York |
| 9 | Julia G. Sullivan THIS PERSON | 54 | Wife | — | Pennsylvania |
| 10 | Harold P. Sullivan | 24 | Son | Time Keeper | Pennsylvania |
| 11 | Leo J. Sullivan | 21 | Son | Book Keeper | New York |
| 12 | Genevieve A. Sullivan | 18 | Daughter | — | Illinois |
| 13 | John Mcdade | 60 | Head | Police Officer | Wisconsin |
| 14 | Mary J. Mcdade | 53 | Wife | — | Illinois |
| 15 | John S. Mcdade | 30 | Son | Salesman | Illinois |
| 16 | Catherine M. Mcdade | 26 | Daughter | Teacher | Illinois |
| 17 | Joseph Van Loon | 32 | Head | Yes | Holland |
| 18 | Jessie Van Loon | 30 | Wife | Yes | Holland |
| 19 | John Van Loon | 3 | Son | — | Holland |
| 20 | Henry Van Loon | 1 | Son | — | Illinois |
| 21 | Matthew Jones | 21 | Roomer | Laborer | Indiana |
| 22 | James Maas | 70 | Head | Retired | Scotland |
| 23 | Elizabeth Maas | 62 | Wife | — | England |
| 24 | James C. Maas | 39 | Son | Electrical Engineer | Illinois |
| 25 | Dorothy G. Maas | 25 | Daughter | Statistical Clerk | Illinois |
| 26 | Christian Danos | 57 | Head | Steam Fitter | Germany |
| 27 | Bertha Danos | 57 | Wife | — | Germany |
| 28 | Paulina M. Rathjen | 28 | Daughter | Stenographer | Illinois |
| 29 | John Mueller | 43 | Head | Yes | Austria |
| 30 | Louise M. Mueller | 47 | Wife | — | Bremen |
| 31 | Louise K. Mueller | 18 | Daughter | Comptometer Op. | Illinois |
| 32 | Robert J. Mueller | 14 | Son | — | Illinois |
| 33 | Gustav Hoppe | 52 | Head | Telephone & Tel. Maintainer | Illinois |
| 34 | Meta M. Hoppe | 45 | Wife | — | Illinois |
| 35 | Robert E. Hoppe | 8 | Son | — | Illinois |
| 36 | Albert Krumma | 75 | Father-in-law | Retired | Prussia |
| 37 | James Marcinkus | 36 | Head | Repairman | Lithuania |
| 38 | Stella Marcinkus | 29 | Wife | — | Lithuania |
| 39 | Alex Marcinkus | 12 | Son | — | Illinois |
| 40 | Charles E. Sullivan | 27 | Head | Displacer Clerk | New York |
| 41 | Corine Sullivan | 21 | Wife | — | Illinois |
| 42 | John L. Sullivan | 0 | Son | — | Illinois |
| 43 | Bertha Candlin | 39 | Head | Stenographer | Illinois |
| 44 | Amelia Maier | 73 | Mother | — | Wisconsin |
| 45 | Hazel Bachman | 24 | Niece | Switchboard Op. | Colorado |
| 46 | John P. Kearney | 35 | Head | Switchman | Illinois |
| 47 | Lucile Kearney | 33 | Wife | — | Illinois |
| 48 | John Kearney | 11 | Son | — | Illinois |
| 49 | Dolores Kearney | 9 | Daughter | — | Illinois |
| 50 | Ursula E. Kearney | 8 | Daughter | — | 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)