WM
William Mccormick — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Dawson-County, Montana
Our Model Tree links this William Mccormick across the 1930 and 1940 US Censuses in Dawson-County, Montana (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 10-person household.
Age 60
b. ~1880
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Dawson-County, Montana |
| Surname | McCormick |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Glendive City |
| 1935 Residence (County) | Dawson |
| Additional Details | |
| Occupation | filtering plant operator |
| Industry | city water plant |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 1466 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Filtering Plant Operator |
| Township / Ward | Glendive City |
| Est. Birth Year | ~1880 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Helen Mccormick | Daughter | — | 8 | ~1932 |
| William Mccormick | Head | — | 60 | ~1880 |
| Harriet Clyde | Other | — | 79 | ~1861 |
| Mildred Mccormick | Daughter | — | 3 | ~1937 |
| Donald Mccormick | Son | — | 6 | ~1934 |
| Walter Mccormick | Son | — | 13 | ~1927 |
| Duane Mccormick | Son | — | 5 | ~1935 |
| Edward Mccormick | Son | — | 19 | ~1921 |
| Robert Mccormick | Son | — | 9 | ~1931 |
| Harriet Mccormick | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Dawson, Montana
Head, age 54
Dawson, Montana · implied b. ~1876 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McCormick |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 37 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kentucky |
| Occupation | Pumper |
| Industry | Water Plant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 26 |
| Radio Set | R |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Dawson-County, Montana
Head, age 60
Dawson-County, Montana · implied b. ~1880 — 10 household members
| Surname | McCormick |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Glendive City |
| 1935 Residence (County) | Dawson |
| Occupation | filtering plant operator |
| Industry | city water plant |
| Class of Worker | GW |
| Hours Worked | 56 |
| Income (1939) | 1466 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 William Mccormick across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Mccormick
Head · 1940 · age 60 · b. ~1880 · Montana
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Dawson-County, Montana
Open full size
1940 US Federal Census — Dawson-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02217-00117)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gladys Lorge | 40 | Wife | — | South Dakota |
| 2 | Betty Lou Smith | 5 | Niece | — | North Dakota |
| 3 | Earl D. Ayers | 52 | Head | Painter & Paperhanger | Indiana |
| 4 | Anna Ayers | 45 | Wife | — | Minnesota |
| 5 | Earl Ayers | 19 | Son | Warehouse Worker | Montana |
| 6 | Arthur F. Ayers | 17 | Son | — | Montana |
| 7 | James A. Ayers | 15 | Son | — | Montana |
| 8 | William P. Mccormick THIS PERSON | 60 | Head | Filtering Plant Operator | Kansas |
| 9 | Harriet Mccormick | 40 | Wife | — | Dakota |
| 10 | Edward Mccormick | 19 | Son | Section Hand | Montana |
| 11 | Walter Mccormick | 13 | Son | — | Montana |
| 12 | Robert Mccormick | 9 | Son | — | Montana |
| 13 | Helen Mccormick | 8 | Daughter | — | Montana |
| 14 | Donald Mccormick | 6 | Son | — | Montana |
| 15 | Duane Mccormick | 5 | Son | — | Montana |
| 16 | Mildred Mccormick | 3 | Daughter | — | Montana |
| 17 | Harriet Clyde | 79 | Mother | — | Wisconsin |
| 18 | Everett E. Schommer | 51 | Head | Section Hand | Missouri |
| 19 | Sarah Schommer | 26 | Wife | — | Nebraska |
| 20 | Orville Schommer | 15 | Son | — | Montana |
| 21 | Albert Schommer | 5 | Son | — | Kansas |
| 22 | Roy Schommer | 2 | Son | — | Montana |
| 23 | Lee Schommer | 1 | Son | — | Montana |
| 24 | Willard Schommer | 0 | Son | — | Montana |
| 25 | Anton N. Starkey | 28 | Head | Line Keeper | Montana |
| 26 | Gertrude Starkey | 25 | Wife | — | North Dakota |
| 27 | Annette Starkey | 2 | Daughter | — | Montana |
| 28 | Alfred L. Kolstad | 52 | Head | Carpenter | Norway |
| 29 | Jennie Kolstad | 45 | Wife | — | Norway |
| 30 | Melvin Kolstad | 26 | Son | Bank Clerk | North Dakota |
| 31 | Elmer Kolstad | 13 | Son | — | Montana |
| 32 | Thera Hallod | 50 | Lodger | — | Norway |
| 33 | Hans C. Hanson | 64 | Head | Carpenter | Norway |
| 34 | Milla Hanson | 54 | Wife | — | Norway |
| 35 | John Hanson | 31 | Son | Mechanic | Minnesota |
| 36 | Milo Hanson | 19 | Son | Delivery Man | Montana |
| 37 | Bernhart Hanson | 14 | Son | — | Montana |
| 38 | Walton C. Baker | 50 | Head | Car Repairer | Canada English |
| 39 | Ouida Baker | 45 | Wife | — | Minnesota |
| 40 | Betty A. Baker | 20 | Daughter | — | Montana |
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)