JH
John Harmon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · York-County, Pennsylvania
Our Model Tree links this John Harmon across the 1930 and 1940 US Censuses in York-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | York-County, Pennsylvania |
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | York City |
| 1935 Residence (County) | York |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | York City |
| Est. Birth Year | ~1924 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jean Harmon | Daughter | — | 10 | ~1930 |
| Dorothy Harmon | Daughter | — | 18 | ~1922 |
| Jane Harmon | Daughter | — | 2 | ~1938 |
| Margaret Harmon | Daughter | — | 5 | ~1935 |
| Harry Harmon | Head | — | 44 | ~1896 |
| John Harmon | Other | — | 66 | ~1874 |
| Maude Harmon | Other | — | 64 | ~1876 |
| John Harmon | Son | — | 16 | ~1924 |
| Harry Harmon | Son | — | 14 | ~1926 |
| Robert Harmon | Son | — | 12 | ~1928 |
| Margaret Harmon | Spouse | — | 39 | ~1901 |
Census Appearances
1930
York, Pennsylvania
Son, age 4
York, Pennsylvania · implied b. ~1926 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | W |
| Can Read/Write | No |
| Veteran | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
York-County, Pennsylvania
Son, age 16
York-County, Pennsylvania · implied b. ~1924 — 11 household members
| Surname | Harmon |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | York City |
| 1935 Residence (County) | York |
| Class of Worker | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Harmon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Harmon
Son · 1940 · age 16 · b. ~1924 · Pennsylvania
★ You are viewing this record
Sibling
Margaret Harmon
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Harmon
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Harmon
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Harmon
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Harmon
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Harmon
Sibling · 1940 · age 10
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 — York-County, Pennsylvania
Open full size
1940 US Federal Census — York-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03645-00328)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia Kahler | 57 | Head | Running House | Pennsylvania |
| 2 | Herbert Wood | 53 | Lodger | — | Pennsylvania |
| 3 | Stella Stoudt | 50 | Lodger | — | Pennsylvania |
| 4 | Ara Starner | 34 | Lodger | — | Pennsylvania |
| 5 | Ellen Shimmel | 65 | Head | — | Pennsylvania |
| 6 | Daisy Shimmel | 29 | Daughter | Sewer | Pennsylvania |
| 7 | Clarence Shimmel | 24 | Son | Labor | Pennsylvania |
| 8 | Alfred Shimmel | 21 | Son | Presser | Pennsylvania |
| 9 | Irene Shimmel | 50 | Daughter | — | Pennsylvania |
| 10 | Gladys Snellbaker | 12 | Grand Daughter | — | Pennsylvania |
| 11 | Barbara Shimmel | 2 | Grand Daughter | — | Pennsylvania |
| 12 | Elsie Evans | 20 | Lodger | — | Pennsylvania |
| 13 | Jacquelin Evans | 4 | Lodger | — | Pennsylvania |
| 14 | Maude Gross | 50 | Lodger | — | Pennsylvania |
| 15 | Curvin Simpson | 60 | Head | — | Pennsylvania |
| 16 | Gertrude Simpson | 74 | Wife | — | Pennsylvania |
| 17 | Luther Irvin | 31 | Head | Shipping Clerk | Pennsylvania |
| 18 | Kathryn Irvin | 26 | Wife | — | Pennsylvania |
| 19 | Jane Irvin | 4 | Daughter | — | Pennsylvania |
| 20 | Frederick Irvin | 3 | Son | — | Pennsylvania |
| 21 | Harry Harmon | 44 | Head | Trucker | Pennsylvania |
| 22 | Margaret Harmon | 39 | Wife | — | Pennsylvania |
| 23 | Dorothy Harmon | 18 | Daughter | Labor | Pennsylvania |
| 24 | John Harmon THIS PERSON | 16 | Son | — | Pennsylvania |
| 25 | Harry Harmon | 14 | Son | — | Pennsylvania |
| 26 | Robert Harmon | 12 | Son | — | Pennsylvania |
| 27 | Jean Harmon | 10 | Daughter | — | Pennsylvania |
| 28 | Margaret Harmon | 5 | Daughter | — | Pennsylvania |
| 29 | Jane Harmon | 2 | Daughter | — | Pennsylvania |
| 30 | John Harmon | 66 | Father | Laborer | Pennsylvania |
| 31 | Maude Harmon | 64 | Mother | — | Pennsylvania |
| 32 | Sarah K. Shidar | 38 | Head | — | Pennsylvania |
| 33 | John A. Shidar | 29 | Son | Operator | Pennsylvania |
| 34 | Charles H. Shidar | 24 | Son | Laborer | Pennsylvania |
| 35 | John J. Goodling | 48 | Lodger | Cutter | Pennsylvania |
| 36 | Charles E. Burk | 67 | Lodger | — | Pennsylvania |
| 37 | Louise B. Stark | 27 | Lodger | Waitress | Pennsylvania |
| 38 | Charles Henderson | 56 | Head | Laborer | Pennsylvania |
| 39 | Ollie Henderson | 53 | Wife | — | Virginia |
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)