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Helen Mccarthy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Will-County, Illinois
Our Model Tree links this Helen Mccarthy across the 1920, 1930 and 1940 US Censuses in Will-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 5-person household.
Age 73
b. ~1867
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Will-County, Illinois |
| Surname | McCarthy |
| Given Name | Helen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet |
| 1935 Residence (County) | Will |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Joliet |
| Est. Birth Year | ~1867 |
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 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Mccarthy | Head | — | 73 | ~1867 |
| Leonard Mccarthy | Son | — | 32 | ~1908 |
| Eleanor Mccarthy | Daughter | — | 30 | ~1910 |
| Cyril Mccarthy | Son | — | 34 | ~1906 |
| Jane Mccarthy | Other | — | 4 | ~1936 |
Census Appearances
1920
Will, Illinois
Head, age 52
Will, Illinois · implied b. ~1868
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | McCarthy |
| Given Name | Helene |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Will, Illinois
Head, age 62
Will, Illinois · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarty |
| Given Name | Helen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 7500 |
| Radio Set | no |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Will-County, Illinois
Head, age 73
Will-County, Illinois · implied b. ~1867 — 5 household members
| Surname | McCarthy |
| Given Name | Helen |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 73 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Joliet |
| 1935 Residence (County) | Will |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 Helen Mccarthy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Helen Mccarthy
Head · 1940 · age 73 · b. ~1867 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Will-County, Illinois
Open full size
1940 US Federal Census — Will-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00908-00089)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John T. Mccook | 32 | Head | Guard | Illinois |
| 42 | Iva T. Mccook | 26 | Wife | — | Illinois |
| 43 | Jack T. Mccook | 1 | Son | — | Illinois |
| 44 | Helen Mccarthy THIS PERSON | 73 | Head | — | Illinois |
| 45 | Cyril J. Mccarthy | 34 | Son | Clerk | Illinois |
| 46 | Leonard Mccarthy | 32 | Son | Mach. Operator | Illinois |
| 47 | Eleanor Mccarthy | 30 | Daughter | Secretary | Illinois |
| 48 | Jane Mccarthy | 4 | Grand-Dau. | — | Illinois |
| 49 | William N. Mcdowell | 42 | Head | Salesman | Illinois |
| 50 | Grace A. Mcdowell | 43 | Wife | — | Illinois |
| 51 | Grace B. Mcdowell | 19 | Daughter | — | Illinois |
| 52 | George J. Mcdowell | 17 | Son | — | Illinois |
| 53 | Jean A. Mcdowell | 12 | Daughter | — | Illinois |
| 54 | William J. Mcdowell | 9 | Son | — | Michigan |
| 55 | Mary Lou Mcdowell | 5 | Daughter | — | Illinois |
| 56 | Alice E. Mcdowell | 4 | Daughter | — | Illinois |
| 57 | Robert E. Mcdowell | 1 | Son | — | Illinois |
| 58 | Alice E. Mcdowell | 82 | Mother | — | Illinois |
| 59 | Patrick W. Riordan | 52 | Head | Fireman | Illinois |
| 60 | Nora E. Riordan | 47 | Wife | — | Illinois |
| 61 | Frank M. Hennessey | 57 | Roomer | Salesman | Illinois |
| 62 | Mabel M. Hennessey | 52 | Roomer | Proprietor | Illinois |
| 63 | Walter J. Mcgrath | 51 | Head | Superintendent | Illinois |
| 64 | Marie E. Mcgrath | 50 | Wife | — | Illinois |
| 65 | Raymond J. Mcgrath | 22 | Son | Delivery Boy | Illinois |
| 66 | Richard M. Mcgrath | 10 | Son | — | Illinois |
| 67 | Clyde E. Whitfield | 28 | Head | Lithographer | Illinois |
| 68 | Leona L. Whitfield | 29 | Wife | — | Illinois |
| 69 | Pauline L. Waller | 15 | Sister-in-law | New Worker | Illinois |
| 70 | Maudie Holden | 53 | Head | Maid | Washington |
| 71 | William A. Pearson | 53 | Head | Accountant | Illinois |
| 72 | Anna P. Pearson | 55 | Wife | — | Illinois |
| 73 | William A. Jr. Pearson | 21 | Son | Office Boy | Illinois |
| 74 | Edward G. Kitchen | 32 | Head | Print Cutter | New York |
| 75 | Eleanor J. Kitchen | 28 | Wife | — | New York |
| 76 | Audrey E. Kitchen | 11 | Daughter | — | New York |
| 77 | Jack J. Kitchen | 8 | Son | — | New York |
| 78 | Howard S. Sloan | 52 | Head | Undertaker | Missouri |
| 79 | Mabel J. Sloan | 43 | Wife | — | Illinois |
| 80 | Arthur W. Smith | 40 | Head | Collector | Michigan |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)