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John Mccarthy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this John Mccarthy across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed) — first a head (b.~1899), then head of a 5-person household.
Age 41
b. ~1899
Male
Head
Born: South Dakota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | McCarthy |
| Given Name | John W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | nr |
| 1935 Residence (County) | nr |
| Additional Details | |
| Occupation | Clerk |
| Industry | Wholesale meat co |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2500 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Occupation | Clerk |
| Township / Ward | Nr |
| Est. Birth Year | ~1899 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Francis Mccarthy | Daughter | — | 9 | ~1931 |
| Margaret Mccarthy | Daughter | — | 1 | ~1939 |
| Eileen Mccarthy | Daughter | — | 15 | ~1925 |
| John Mccarthy | Head | — | 41 | ~1899 |
| Theresa Mccarthy | Spouse | — | 39 | ~1901 |
Census Appearances
1920
Denver, Colorado
Other, age 20
Denver, Colorado · implied b. ~1900 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | John J. |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | South Dakota |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Nebraska |
| Occupation | Bookkeeper |
| Industry | Meat Packing |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1930
Denver, Colorado
Head, age 31
Denver, Colorado · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCarthy |
| Given Name | John J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Age at First Marriage | 24 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Nebraska |
| Occupation | Book Keeper |
| Industry | Packing Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Radio Set | R |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Denver-County, Colorado
Head, age 41
Denver-County, Colorado · implied b. ~1899 — 5 household members
| Surname | McCarthy |
| Given Name | John W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | nr |
| 1935 Residence (County) | nr |
| Occupation | Clerk |
| Industry | Wholesale meat co |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 2500 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 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
John Mccarthy
Head · 1940 · age 41 · b. ~1899 · Colorado
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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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00487-00099)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Belle Davis | 78 | Mother in law | — | Missouri |
| 42 | John W Mccarthy THIS PERSON | 41 | Head | Clerk | South Dakota |
| 43 | Theresa Mccarthy | 39 | Wife | — | Illinois |
| 44 | Eileen Mccarthy | 15 | Daughter | — | Colorado |
| 45 | Francis Mccarthy | 9 | Daughter | — | Colorado |
| 46 | Margaret Mccarthy | 1 | Daughter | — | Colorado |
| 47 | Oliver Childs | 69 | Head | Engineer | Iowa |
| 48 | Alma Childs | 63 | Wife | — | Iowa |
| 49 | Bernard Cannon | 40 | Head | Salesman | Nebraska |
| 50 | Mabel Cannon | 38 | Wife | — | Nebraska |
| 51 | Mary Cannon | 17 | Daughter | Waitress | Iowa |
| 52 | Robert Cannon | 19 | Son | — | Nebraska |
| 53 | Donald Cannon | 12 | Son | — | Nebraska |
| 54 | Elsie Cannon | 10 | Daughter | — | Colorado |
| 55 | Emil Binford | 68 | Head | Auditor | Iowa |
| 56 | Florence Binford | 79 | Wife | — | Mississippi |
| 57 | Charles Sheldon | 60 | Head | Salesman | Pennsylvania |
| 58 | Mabel Sheldon | 55 | Wife | — | Pennsylvania |
| 59 | William Denger | 57 | Head | — | Colorado |
| 60 | Margaret Denger | 57 | Wife | — | Colorado |
| 61 | Edward Wormbacher | 26 | Son in law | — | Iowa |
| 62 | Frances Wormbacher | 39 | Daughter | — | Iowa |
| 63 | Catherine Mullaney | 66 | Sister in law | — | California |
| 64 | Malcolm Duncan | 54 | Head | Salesman | New York |
| 65 | Evelyn Duncan | 47 | Wife | — | Pennsylvania |
| 66 | Douglas Duncan | 21 | Son | — | New York |
| 67 | Marie Duncan | 19 | Daughter | Stenographer | Colorado |
| 68 | Charles Kelsey | 57 | Head | Floor Manager | Illinois |
| 69 | Louise Kelsey | 54 | Wife | — | Illinois |
| 70 | Ellis Hellente | 44 | Head | Clerk | Kansas |
| 71 | Goldie Hellente | 39 | Wife | Service Mgr | Missouri |
| 72 | Norma Hellente | 12 | Daughter | — | Colorado |
| 73 | Lawrence Birch | 32 | Head | Barber | Nebraska |
| 74 | Mildred Birch | 35 | Wife | House Work | Colorado |
| 75 | Joseph Fogarty | 49 | Head | Mechanic | South Carolina |
| 76 | Olive Fogarty | 43 | Wife | Beautician | Kansas |
| 77 | Ernest Easterwood | 56 | Head | — | Missouri |
| 78 | Emma Easterwood | 30 | Daughter | Stenographer | New Mexico |
| 79 | Clara Denger | 76 | Mother | — | Ohio |
| 80 | Daniel Ward | 80 | Head | Real Estate | Illinois |
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)