JC
James Costello — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Cook, Illinois
Our Model Tree links this James Costello across the 1900, 1910 and 1920 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a head (b.~1885), then head of a 4-person household.
Age 35
b. ~1885
Male
Head
Born: Ireland
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Cook, Illinois |
| Surname | Costello |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Policeman |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | ireland |
| Occupation | Policeman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1885 |
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.
4 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Thomas Costello | Son | — | 3 | ~1917 |
| Catherine Costello | Spouse | — | 29 | ~1891 |
| James Costello | Head | — | 35 | ~1885 |
| Rita Costello | Daughter | — | 2 | ~1918 |
Census Appearances
1900
Cook, Illinois
Other, age 15
Cook, Illinois · implied b. ~1885 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Castello |
| Given Name | James |
| Relationship to Head | Adopted son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | Aug |
| Birth Year | 1885 |
| Year of Immigration | 1882 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Telegraph Messenger |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Cook, Illinois
Other, age 26
Cook, Illinois · implied b. ~1884 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Costello |
| Given Name | James |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Caisson |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Cook, Illinois
Head, age 35
Cook, Illinois · implied b. ~1885 — 4 household members
| Surname | Costello |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1905 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Policeman |
| Industry | City |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Year of Naturalization | 1910 |
| Birthplace (normalized) | ireland |
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 James Costello across 3 US Census years (1900, 1910 and 1920) in Cook, Illinois, using XGBoost record linkage.
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This person
Anchor record
James Costello
Head · 1920 · age 35 · b. ~1885 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Cook, Illinois
Open full size
1920 US Federal Census — Cook, Illinois
Page Contents
36 people indexed on this census page (ia:1920:14thcensusofpopu347unit:0524)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret Kelly | 2 | Daughter | — | Illinois |
| 2 | Mary Cantwell | 46 | Head | — | Illinois |
| 3 | Edward Cantwell | 7 | Son | — | Illinois |
| 4 | Nora Tangney | 36 | Head | Examiner | Ireland |
| 5 | John Tangney | 15 | Son | Office Clerk | Illinois |
| 6 | Margaret Tangney | 13 | Daughter | — | Illinois |
| 7 | Jerry Tangney | 10 | Son | — | Illinois |
| 8 | Nora Tangney | 3 | Daughter | — | Illinois |
| 9 | Timothy Griffin | 59 | Head | Laborer | Ireland |
| 10 | Mary Griffin | 57 | Wife | — | Ireland |
| 11 | Margaret Griffin | 31 | Daughter | Bookbinder | Illinois |
| 12 | Thomas Griffin | 27 | Son | Laborer | Illinois |
| 13 | Mary Agnes Griffin | 18 | Daughter | Clerk | Illinois |
| 14 | Frank Costello | 2 | Boarder | — | Illinois |
| 15 | Dorothy Costello | 1 | Boarder | — | Illinois |
| 16 | David Griffin | 25 | Son | Cattle Man | Illinois |
| 17 | James Costello THIS PERSON | 35 | Head | Policeman | Ireland |
| 18 | Catherine Costello | 29 | Wife | — | Illinois |
| 19 | Thomas Costello | 3 | Son | — | Illinois |
| 20 | Rita Rosalie Costello | 2 | Daughter | — | Illinois |
| 21 | John Lynch | 34 | Head | Teamster | Ireland |
| 22 | Mary Lynch | 34 | Wife | — | Ireland |
| 23 | Mary Lynch | 2 | Daughter | — | Illinois |
| 24 | John Lynch | 0 | Son | — | Illinois |
| 25 | Michael Shea | 33 | Head | Shipping Clerk | Ireland |
| 26 | Helena Shea | 26 | Wife | — | England |
| 27 | Terence Shea | 3 | Son | — | Illinois |
| 28 | Michael Joseph Shea | 1 | Son | — | Illinois |
| 29 | Edward Hara | 47 | Head | Laborer | Ireland |
| 30 | Margaret Hara | 46 | Wife | — | Ireland |
| 31 | Daniel Kelly | 25 | Head | Clerk | Illinois |
| 32 | Margaret Kelly | 21 | Wife | — | Illinois |
| 33 | Catherine Kelly | 3 | Daughter | — | Illinois |
| 34 | James Kelly | 1 | Son | — | Illinois |
| 35 | Lillian Novello | 19 | Boarder | Operator | Illinois |
| 36 | Mary Kelty | 59 | Head | — | Ireland |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)