JK
John Koch — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Whitman, Washington
Our Model Tree links this John Koch across the 1910 and 1920 US Censuses in Whitman, Washington (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 5-person household.
Age 53
b. ~1867
Male
Head
Born: Illinois
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Whitman, Washington |
| Surname | Koch |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Precinct 28 |
| Est. Birth Year | ~1867 |
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 |
|---|---|---|---|---|
| Martha Koch | Spouse | — | 45 | ~1875 |
| John Koch | Head | — | 53 | ~1867 |
| Cora Koch | Daughter | — | 19 | ~1901 |
| Velma Koch | Daughter | — | 14 | ~1906 |
| Avery Koch | Son | — | 8 | ~1912 |
Census Appearances
1910
Whitman, Washington
Head, age 43
Whitman, Washington · implied b. ~1867 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Koch |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 15 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Illinois |
| Occupation | Farmer |
| Industry | General Farm |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Whitman, Washington
Head, age 53
Whitman, Washington · implied b. ~1867 — 5 household members
| Surname | Koch |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Whitman, Washington, using XGBoost record linkage.
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This person
Anchor record
John Koch
Head · 1920 · age 53 · b. ~1867 · Washington
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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 — Whitman, Washington
Open full size
1920 US Federal Census — Whitman, Washington
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu1944unit:0970)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Clarence P. Bailey | 26 | Head | Farm Laborer | Illinois |
| 52 | Florence E. Bailey | 24 | Wife | — | Idaho |
| 53 | Harry Patton | 30 | Head | Farm Laborer | Washington |
| 54 | Alonzo C. Meyers | 51 | Head | Farmer | Ohio |
| 55 | Beulah E. Meyers | 26 | Wife | — | Washington |
| 56 | Mildred P. Meyers | 5 | Daughter | — | Wisconsin |
| 57 | Timothy T. Green | 50 | Head | Farmer | Iowa |
| 58 | Nellie S. Green | 49 | Wife | — | Nebraska |
| 59 | Ida O. Green | 17 | Daughter | — | Utah |
| 60 | Clarissa L. Green | 12 | Daughter | — | Kansas |
| 61 | Vinta Green | 9 | Daughter | — | Kansas |
| 62 | Verle Green | 9 | Son | — | Kansas |
| 63 | Patrick Wynne | 62 | Head | Farmer | Ireland |
| 64 | Mary E. Wynne | 61 | Wife | — | Mississippi |
| 65 | James B. Wynne | 29 | Son | Farm Laborer | Washington |
| 66 | Cecile L. Wynne | 18 | Daughter | — | Washington |
| 67 | Grant Jenkins | 53 | Head | Farmer | Illinois |
| 68 | Anna V. Jenkins | 43 | Wife | — | Kansas |
| 69 | Earnest G. Jenkins | 27 | Son | Farm Laborer | Washington |
| 70 | Oscar M. Jenkins | 23 | Son | Farm Laborer | Washington |
| 71 | Althea M. Jenkins | 15 | Daughter | — | Washington |
| 72 | Doris L. Jenkins | 13 | Daughter | — | Washington |
| 73 | Barbara C. Jenkins | 9 | Daughter | — | Washington |
| 74 | John Koch THIS PERSON | 53 | Head | Farmer | Illinois |
| 75 | Martha Koch | 45 | Wife | — | North Carolina |
| 76 | Cora M. Koch | 19 | Daughter | — | Oregon |
| 77 | Velma S. Koch | 14 | Daughter | — | Oregon |
| 78 | Avery S. Koch | 8 | Son | — | Washington |
| 79 | Ernest H. Grayson | 28 | Head | Farmer | Washington |
| 80 | Velma E. Grayson | 17 | Wife | — | Washington |
| 81 | Lillian L. Grayson | 0 | Daughter | — | Washington |
| 82 | Maurice Wilson | 33 | Head | Farmer | Nebraska |
| 83 | Frankie L. Wilson | 30 | Wife | — | Washington |
| 84 | Donald I. Wilson | 10 | Son | — | Washington |
| 85 | Gladys H. Wilson | 8 | Daughter | — | Washington |
| 86 | Margaret G. Wilson | 6 | Daughter | — | Washington |
| 87 | Charles C. Wilson | 1 | Son | — | Washington |
| 88 | Charles G. King | 25 | Head | Farmer | Iowa |
| 89 | Mae V. King | 17 | Wife | — | California |
| 90 | Wayne S. Garrett | 18 | Hired man | Farm Laborer | Washington |
| 91 | William F. Echards | 45 | Head | Farmer | Virginia |
| 92 | Florence O. Echards | 47 | Wife | — | Virginia |
| 93 | Minnie A. Echards | 21 | Daughter | Teacher | Virginia |
| 94 | William P. Echards | 18 | Son | — | Virginia |
| 95 | Mary E. Echards | 17 | Daughter | — | Virginia |
| 96 | Frank L. Morasse | 37 | Head | Farmer | France |
| 97 | Marie A. Morasse | 31 | Wife | — | France |
| 98 | Annie M. Morasse | 7 | Daughter | — | Canada |
| 99 | Charles Stark | 32 | Head | — | Ohio |
| 100 | Lulu Stark | 28 | Wife | — | Ohio |
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)