JF
James Flynn — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this James Flynn across the 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 13-person household.
Age 19
b. ~1921
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | Flynn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Occupation | Clipper |
| Industry | Spring Mattress |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Clipper |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1921 |
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.
13 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Ann Flynn | Daughter | — | 11 | ~1929 |
| Mary Flynn | Daughter | — | 18 | ~1922 |
| Ellen Flynn | Daughter | — | 1 | ~1939 |
| James Flynn | Head | — | 43 | ~1897 |
| Son Flynn | Other | — | — | |
| Leroy Noy | Other | — | 13 | ~1927 |
| Thomas Flynn | Son | — | 15 | ~1925 |
| Joseph Flynn | Son | — | 6 | ~1934 |
| Henry Flynn | Son | — | 17 | ~1923 |
| Gerald Flynn | Son | — | 2 | ~1938 |
| James Flynn | Son | — | 19 | ~1921 |
| Eugene Flynn | Son | — | 2 | ~1938 |
| Sarah Flynn | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Mercer, New …
Son, age 7
Mercer, New Jersey · implied b. ~1923 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flynn |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Son, age 19
Mercer-County, New Jersey · implied b. ~1921 — 13 household members
| Surname | Flynn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Trenton City |
| 1935 Residence (County) | Mercer |
| Occupation | Clipper |
| Industry | Spring Mattress |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | H 4 |
| 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 James Flynn across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Flynn
Son · 1940 · age 19 · b. ~1921 · New Jersey
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Sibling
Ellen Flynn
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Flynn
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Flynn
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Flynn
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Flynn
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Flynn
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Flynn
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Flynn
Sibling · 1940 · age 2
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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02356-00619)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Rochford | 17 | Son | — | New Jersey |
| 2 | Robert Rochford | 15 | Son | — | New Jersey |
| 3 | Patricia Rochford | 3 | Daughter | — | New Jersey |
| 4 | John Rochford | 2 | Son | — | New Jersey |
| 5 | Ralph Springer | 40 | Head | Factory Manager | New Jersey |
| 6 | Margaret Springer | 38 | Wife | — | New Jersey |
| 7 | Norma Springer | 17 | Daughter | — | New Jersey |
| 8 | Ralph Springer | 15 | Son | — | New Jersey |
| 9 | Jessie Springer | 12 | Daughter | — | New Jersey |
| 10 | Jack Springer | 11 | Son | — | New Jersey |
| 11 | Barbara Springer | 6 | Daughter | — | New Jersey |
| 12 | D. Russell Breece | 32 | Head | Bakery Truck | New Jersey |
| 13 | Anna Breece | 53 | Wife | — | New Jersey |
| 14 | William Breece | 18 | Son | — | New Jersey |
| 15 | William Kingman | 39 | Head | Machinist | New Jersey |
| 16 | Ethel Kingman | 35 | Wife | — | New Jersey |
| 17 | William Kingman | 17 | Son | — | New Jersey |
| 18 | Evelyn Kingman | 14 | Daughter | — | New Jersey |
| 19 | Gloria Kingman | 13 | Daughter | — | New Jersey |
| 20 | James Flynn | 43 | Head | Guard | New Jersey |
| 21 | Sarah Flynn | 41 | Wife | — | New Jersey |
| 22 | Son Flynn | None | Enumerated | — | — |
| 23 | James Flynn THIS PERSON | 19 | Son | Clipper | New Jersey |
| 24 | Mary Flynn | 18 | Daughter | — | New Jersey |
| 25 | Henry Flynn | 17 | Son | — | New Jersey |
| 26 | Thomas Flynn | 15 | Son | — | New Jersey |
| 27 | Ann Flynn | 11 | Daughter | — | New Jersey |
| 28 | Joseph Flynn | 6 | Son | — | New Jersey |
| 29 | Gerald Flynn | 2 | Son | — | New Jersey |
| 30 | Eugene Flynn | 2 | Son | — | New Jersey |
| 31 | Ellen Flynn | 1 | Daughter | — | New Jersey |
| 32 | Leroy Noy | 13 | Nephew | — | New Jersey |
| 33 | Albert E. Trauter | 54 | Head | Machinist | New Jersey |
| 34 | Erma H. Trauter | 38 | Wife | — | New Jersey |
| 35 | Clifford P. Trauter | 16 | Son | — | New Jersey |
| 36 | Robert J. Trauter | 14 | Son | — | New Jersey |
| 37 | Dorothy L. Trauter | 13 | Daughter | — | New Jersey |
| 38 | Albert E. Trauter | 12 | Son | — | New Jersey |
| 39 | Margaret E. Trauter | 9 | Daughter | — | New Jersey |
| 40 | Walter J. Hibbert | 18 | Boarder | Painter | New Jersey |
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)