JK
John Koch — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Northampton, Pennsylvania
Our Model Tree links this John Koch across the 1910 and 1920 US Censuses in Northampton, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 5-person household.
Age 42
b. ~1878
Male
Head
Born: Pennsylvania
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Northampton, Pennsylvania |
| Surname | Koch |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Teacher |
| Township / Ward | Northampton Borough |
| Est. Birth Year | ~1878 |
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.
5 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Earl Koch | Son | — | 15 | ~1905 |
| Goldie Koch | Spouse | — | 35 | ~1885 |
| Philip Koch | Son | — | 12 | ~1908 |
| John Koch | Son | — | 3 | ~1917 |
| John Koch | Head | — | 42 | ~1878 |
Census Appearances
1910
Northampton, Pennsylvania
Head, age 32
Northampton, Pennsylvania · implied b. ~1878 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Koch |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Years Married | 7 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Teacher |
| Industry | Common School |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Northampton, Pennsylvania
Head, age 42
Northampton, Pennsylvania · implied b. ~1878 — 5 household members
| Surname | Koch |
| Given Name | John G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Teacher |
| Industry | Public School |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| 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 Koch across 2 US Census years (1910 and 1920) in Northampton, Pennsylvania, using XGBoost record linkage.
Show:
This person
Anchor record
John Koch
Head · 1920 · age 42 · b. ~1878 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Northampton, Pennsylvania
Open full size
1920 US Federal Census — Northampton, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1607unit:0688)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Edward Loch | 28 | Head | Barber | Pennsylvania |
| 52 | Florence Loch | 29 | Wife | — | Pennsylvania |
| 53 | Earl Loch | 7 | Son | — | Pennsylvania |
| 54 | Mary Loch | 5 | Daughter | — | Pennsylvania |
| 55 | Charles Snyder | 32 | Head | Instructor | Pennsylvania |
| 56 | Allie Snyder | 32 | Wife | — | Pennsylvania |
| 57 | Willard Snyder | 12 | Son | — | Pennsylvania |
| 58 | Marion Snyder | 10 | Daughter | — | Pennsylvania |
| 59 | George Bernd | 54 | Head | Fireman | Pennsylvania |
| 60 | Sara Bernd | 50 | Wife | — | Pennsylvania |
| 61 | Ruth Bernd | 25 | Daughter | — | Pennsylvania |
| 62 | Isabel Bernd | 24 | Daughter | — | Pennsylvania |
| 63 | Benjamin Kloppenger | 36 | Boarder | Pipe Fitter | Pennsylvania |
| 64 | John Borosky | 48 | Head | Butcher | Poland |
| 65 | Joseph Borosky | 23 | Son | Mechanic | Pennsylvania |
| 66 | Sophia Borosky | 19 | Daughter | — | Pennsylvania |
| 67 | Paul Borosky | 15 | Son | — | Pennsylvania |
| 68 | Charles Treuler | 56 | Head | Painter | Pennsylvania |
| 69 | Elizabeth Treuler | 48 | Wife | — | Pennsylvania |
| 70 | Edwin M. Smith | 55 | Head | Carpenter | Pennsylvania |
| 71 | Hattie Smith | 42 | Wife | — | Pennsylvania |
| 72 | Charles Kuehner | 27 | Head | Barber | Pennsylvania |
| 73 | Esther Kuehner | 27 | Wife | — | Pennsylvania |
| 74 | Thomas Kuehner | 3 | Son | — | Pennsylvania |
| 75 | Edwin Hartzell | 26 | Head | Laborer | Pennsylvania |
| 76 | Alice Hartzell | 26 | Wife | — | Pennsylvania |
| 77 | Henry Jacoby | 44 | Head | Laborer | Pennsylvania |
| 78 | Emma Jacoby | 39 | Wife | — | Pennsylvania |
| 79 | Viola Jacoby | 15 | Daughter | — | Pennsylvania |
| 80 | Ralph Jacoby | 5 | Son | — | Pennsylvania |
| 81 | William H. Ebert | 26 | Head | Chemist | Pennsylvania |
| 82 | Irene Ebert | 22 | Wife | — | Pennsylvania |
| 83 | Milton Smith | 21 | Head | Laborer | Pennsylvania |
| 84 | Esther Smith | 19 | Wife | — | Pennsylvania |
| 85 | Elizabeth Speelman | 17 | Boarder | — | Pennsylvania |
| 86 | Warren Geary | 54 | Head | Repairman | Pennsylvania |
| 87 | Bertha Geary | 47 | Wife | — | Pennsylvania |
| 88 | Floyd Geary | 20 | Son | Inspector | Pennsylvania |
| 89 | John G. Koch THIS PERSON | 42 | Head | Teacher | Pennsylvania |
| 90 | Goldie Koch | 35 | Wife | — | Pennsylvania |
| 91 | Earl Koch | 15 | Son | — | Pennsylvania |
| 92 | Philip Koch | 12 | Son | — | Pennsylvania |
| 93 | John Jr. Koch | 3 | Son | — | Pennsylvania |
| 94 | Milton Becker | 25 | Head | Trackman | Pennsylvania |
| 95 | Helen Becker | 23 | Wife | — | Pennsylvania |
| 96 | Earnest Becker | 3 | Son | — | Pennsylvania |
| 97 | Harry L. Sieger | 31 | Head | Plumber | Pennsylvania |
| 98 | Marion Sieger | 28 | Wife | — | Pennsylvania |
| 99 | Lillian Sieger | 2 | Daughter | — | Pennsylvania |
| 100 | Milton H. Becker | 52 | Head | Laborer | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)