JC
James Cox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Charles-County, Maryland
Our Model Tree links this James Cox across the 1920, 1930 and 1940 US Censuses in Charles-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 3-person household.
Age 66
b. ~1874
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Charles-County, Maryland |
| Surname | Cox |
| Given Name | James A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | 6th district |
| 1935 Residence (County) | Charles |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Farmer |
| Township / Ward | 6Th District |
| Est. Birth Year | ~1874 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Cox | Head | — | 66 | ~1874 |
| Junius Cox | Son | — | 21 | ~1919 |
| Anna Cox | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Charles, Maryland
Head, age 46
Charles, Maryland · implied b. ~1874 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | J. Andrew |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Charles, Maryland
Head, age 56
Charles, Maryland · implied b. ~1874 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | James A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Carpenter |
| Industry | House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Charles-County, Maryland
Head, age 66
Charles-County, Maryland · implied b. ~1874 — 3 household members
| Surname | Cox |
| Given Name | James A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | 6th district |
| 1935 Residence (County) | Charles |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| 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 Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Cox
Head · 1940 · age 66 · b. ~1874 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Charles-County, Maryland
Open full size
1940 US Federal Census — Charles-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01546-00263)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Strange | 9 | Son | — | Maryland |
| 42 | James S. Jr. Strange | 8 | Son | — | Maryland |
| 43 | Mary P. Strange | 3 | Daughter | — | Maryland |
| 44 | James B. Marshall | 47 | Head | Farmer | Maryland |
| 45 | Nora Marshall | 43 | Wife | — | Maryland |
| 46 | Larry Marshall | 14 | Son | — | Maryland |
| 47 | Orbin (At) Marshall | 13 | Son | Laborer | Maryland |
| 48 | Eleanor Marshall | 11 | Daughter | — | Maryland |
| 49 | Renee Marshall | 7 | Son | — | Maryland |
| 50 | Shannon Marshall | 6 | Son | — | Maryland |
| 51 | La Gaudin Marshall | 4 | Son | — | Maryland |
| 52 | Gloria Marshall | 1 | Daughter | — | Maryland |
| 53 | Shirley Cooke | 7 | Niece | — | Maryland |
| 54 | Levie Jackson | 21 | Cousin | Mechanic | Maryland |
| 55 | Gladys Marshall | 21 | Niece | — | Maryland |
| 56 | William M. Hoagler | 62 | Head | Farmer | Maryland |
| 57 | May B. Hoagler | 56 | Wife | — | Maryland |
| 58 | William M. Hoagler | 31 | Son | Painter | Maryland |
| 59 | James Hoagler | 21 | Son | Farmer | Maryland |
| 60 | Helen Ann Hoagler | 3 | Granddaughter | — | Maryland |
| 61 | T. Brocker Jones | 67 | Head | Farmer | Maryland |
| 62 | Annie C. Jones | 65 | Sister | — | Maryland |
| 63 | Alfred B. Hill | 23 | Brother-in-law | Clerk | D.C. |
| 64 | Georgia Rae Hill | 23 | Daughter | — | Maryland |
| 65 | Harry F. Perkins | 33 | Head | Laborer | Maryland |
| 66 | Alice E. Perkins | 32 | Wife | — | Maryland |
| 67 | Leonard Perkins | 12 | Son | — | Maryland |
| 68 | Loretta Perkins | 9 | Daughter | — | Maryland |
| 69 | Doris Perkins | 4 | Daughter | — | Maryland |
| 70 | Florence Robey | 66 | Head | — | Maryland |
| 71 | John R. Perry | 32 | Son-in-law | Attendant | Maryland |
| 72 | Florence P. Perry | 29 | Daughter | — | Maryland |
| 73 | Carola Ann Perry | 1 | Daughter | — | Maryland |
| 74 | Carroll A. Willett | 58 | Head | Farmer | Maryland |
| 75 | Sarah R. Willett | 46 | Wife | — | Maryland |
| 76 | Russell P. Willett | 24 | Son | Farmer | Maryland |
| 77 | Margaret C. Willett | 24 | Daughter-in-law | — | Iowa |
| 78 | James A. Cox THIS PERSON | 66 | Head | Farmer | Maryland |
| 79 | Anna C. Cox | 55 | Wife | — | Maryland |
| 80 | Junius Cox | 21 | Son | Farmer | Maryland |
Related Census Records
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)