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John Monroe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Camden-County, New Jersey
Our Model Tree links this John Monroe across the 1930 and 1940 US Censuses in Camden-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Camden-County, New Jersey |
| Surname | Monroe |
| Given Name | John J. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Collingswood borough |
| 1935 Residence (County) | Camden |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Collingswood Borough |
| Est. Birth Year | ~1929 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Patricia Monroe | Daughter | — | 10 | ~1930 |
| Wm Monroe | Son | — | 7 | ~1933 |
| Doris Monroe | Daughter | — | 8 | ~1932 |
| Helen Monroe | Spouse | — | 38 | ~1902 |
| Maureen Monroe | Daughter | — | 13 | ~1927 |
| John Monroe | Son | — | 11 | ~1929 |
| Margaret Monroe | Daughter | — | 5 | ~1935 |
| John Monroe | Head | — | 43 | ~1897 |
Census Appearances
1930
Camden, New …
Son, age 1
Camden, New Jersey · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monroe |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Camden-County, New …
Son, age 11
Camden-County, New Jersey · implied b. ~1929 — 8 household members
| Surname | Monroe |
| Given Name | John J. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Collingswood borough |
| 1935 Residence (County) | Camden |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Monroe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Monroe
Son · 1940 · age 11 · b. ~1929 · New Jersey
★ You are viewing this record
Sibling
Wm Monroe
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Monroe
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Monroe
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Monroe
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maureen Monroe
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 — Camden-County, New Jersey
Open full size
1940 US Federal Census — Camden-County, New Jersey
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02320-00615)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J. Jr. Frommherz | 27 | head | Salesman | New Jersey |
| 2 | Frieda Frommherz | 27 | wife | Secretary | New Jersey |
| 3 | Paula Craig | 57 | mother-in-law | — | Germany |
| 4 | Frank Johnston | 50 | head | Superintendent | Penn |
| 5 | Mary Johnston | 52 | wife | — | Penn |
| 6 | Ann Johnston | 24 | daughter | Clerk | Penn |
| 7 | Mary L. Johnston | 22 | daughter | Clerk | Penn |
| 8 | Frank W. Johnston | 22 | son | — | Penn |
| 9 | Clifford B. Cox | 35 | head | Foreman | Connecticut |
| 10 | Eunice Cox | 34 | wife | — | Connecticut |
| 11 | Kenneth Cox | 0 | son | — | New Jersey |
| 12 | Alex Catybousky | 54 | head | Inspector | Penn |
| 13 | Hitty Catybousky | 55 | wife | — | Penn |
| 14 | James F. Cunningham | 48 | head | President | Penn |
| 15 | Elizabeth Cunningham | 50 | wife | — | Penn |
| 16 | James F. Jr. Cunningham | 13 | son | — | Penn |
| 17 | Kenneth Hewitt | 38 | head | Sales Representative | Canada |
| 18 | Emily Hewitt | 38 | wife | — | Maryland |
| 19 | Paul R. Mills | 35 | head | Assistant Cashier | New Jersey |
| 20 | Emily H. Mills | 32 | wife | — | New Jersey |
| 21 | Paul R. Jr. Mills | 2 | son | — | New Jersey |
| 22 | Mary Higgins | 71 | head | — | New Jersey |
| 23 | Marie Higgins | 40 | daughter | Clerk | New Jersey |
| 24 | John J. Monroe | 43 | head | Salesman | Penn |
| 25 | Helen R. Monroe | 38 | wife | — | Penn |
| 26 | Maureen Monroe | 13 | daughter | — | New Jersey |
| 27 | John J. Jr. Monroe THIS PERSON | 11 | son | — | New Jersey |
| 28 | Patricia Monroe | 10 | daughter | — | New Jersey |
| 29 | Doris Monroe | 8 | daughter | — | New Jersey |
| 30 | Wm Monroe | 7 | son | — | New Jersey |
| 31 | Margaret Monroe | 5 | daughter | — | New Jersey |
| 32 | Fred G. Wacker | 60 | head | Merchant | Penn |
| 33 | Emma Wacker | 51 | wife | — | New Jersey |
| 34 | — | None | — | — | — |
| 35 | — | None | — | — | — |
| 36 | — | None | — | — | — |
| 37 | Anna A. Gallagher | 52 | head | — | Penn |
| 38 | Gertrude Gallagher | 27 | daughter | Clerk | Penn |
| 39 | Philip Gallagher | 24 | son | — | Penn |
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)