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James Mccoy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this James Mccoy across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | McCoy |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | nr |
| Additional Details | |
| Occupation | Laborer |
| Industry | Tin Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 216 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1920 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Betty Mccoy | Daughter | — | 13 | ~1927 |
| James Mccoy | Head | — | 56 | ~1884 |
| James Mccoy | Son | — | 20 | ~1920 |
| Thomas Mccoy | Son | — | 18 | ~1922 |
| William Mccoy | Son | — | 31 | ~1909 |
| Francis Mccoy | Son | — | 14 | ~1926 |
| Joseph Mccoy | Son | — | 12 | ~1928 |
| John Mccoy | Son | — | 19 | ~1921 |
Census Appearances
1930
Baltimore, Maryland
Son, age 5
Baltimore, Maryland · implied b. ~1925 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCoy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | North Carolina |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 20
Baltimore-City-County, Maryland · implied b. ~1920 — 8 household members
| Surname | McCoy |
| Given Name | James Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | nr |
| Occupation | Laborer |
| Industry | Tin Mill |
| Class of Worker | PW |
| Hours Worked | 32 |
| Income (1939) | 216 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 Mccoy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mccoy
Son · 1940 · age 20 · b. ~1920 · Maryland
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Sibling
Francis Mccoy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mccoy
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mccoy
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mccoy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mccoy
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Mccoy
Sibling · 1940 · age 13
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
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01517-00171)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Kenny | 58 | Head | Laborer | Maryland |
| 2 | Mary Kenny | 54 | Wife | — | Maryland |
| 3 | James Kenny | 28 | Son | Glazier | Maryland |
| 4 | Marie Kenny | 25 | Daughter | — | Maryland |
| 5 | Elizabeth Turner | 82 | Mother-in-law | — | Maryland |
| 6 | John J. Quinn | 29 | Head | Laborer | Maryland |
| 7 | Marie Quinn | 25 | Wife | — | Maryland |
| 8 | Mary Quinn | 5 | Daughter | — | Maryland |
| 9 | John V. Quinn | 0 | Son | — | Maryland |
| 10 | John Rheinfelder | 55 | Head | Janitor | Maryland |
| 11 | Ellen Rheinfelder | 44 | Wife | Charwoman | Maryland |
| 12 | Joseph Rheinfelder | 20 | Son | Apprentice | Maryland |
| 13 | William Rheinfelder | 18 | Son | Mailman | Maryland |
| 14 | Carl Rheinfelder | 16 | Son | — | Maryland |
| 15 | John Jr. Rheinfelder | 15 | Son | — | Maryland |
| 16 | Francis Rheinfelder | 13 | Son | — | Maryland |
| 17 | Margaret Rheinfelder | 11 | Daughter | — | Maryland |
| 18 | Julius Birkmaier | 42 | Head | Motorman | Maryland |
| 19 | Anna Birkmaier | 36 | Wife | — | Maryland |
| 20 | John Birkmaier | 7 | Son | — | Maryland |
| 21 | Joseph Birkmaier | 68 | Father | Fireman | Maryland |
| 22 | Blanche Birkmaier | 19 | Sister | Servant | Maryland |
| 23 | Mary A. Welsh | 51 | Head | Servant | Virginia |
| 24 | James Mccoy | 56 | Head | Laborer | Maryland |
| 25 | William Mccoy | 31 | Son | Chauffeur | Maryland |
| 26 | James Jr. Mccoy THIS PERSON | 20 | Son | Laborer | Maryland |
| 27 | John Mccoy | 19 | Son | New Worker | Maryland |
| 28 | Thomas Mccoy | 18 | Son | New Worker | Maryland |
| 29 | Francis Mccoy | 14 | Son | — | Maryland |
| 30 | Betty Mccoy | 13 | Daughter | — | Maryland |
| 31 | Joseph Mccoy | 12 | Son | — | Maryland |
| 32 | Michael Guinetta | 39 | Head | — | Maryland |
| 33 | Anna E. Guinetta | 40 | Wife | — | Maryland |
| 34 | Anna M. Guinetta | 10 | Daughter | — | Maryland |
| 35 | Michael Jr. Guinetta | 5 | Son | — | Maryland |
| 36 | John F. Bell | 73 | Head | — | West Virginia |
| 37 | Catherine Bell | 46 | Wife | — | Maryland |
| 38 | Marie Bell | 21 | Daughter | Finisher | Maryland |
| 39 | Franklin Bell | 17 | Son | Laborer | Maryland |
| 40 | Margaret Bell | 14 | Daughter | — | Maryland |
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)