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Charles Chapman — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Prairie-County, Montana
Our Model Tree links this Charles Chapman across the 1930 and 1940 US Censuses in Prairie-County, Montana (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 10-person household.
Age 15
b. ~1925
Male
Son
Born: Montana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Prairie-County, Montana |
| Surname | Chapman |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Prairie |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Montana |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
| Township / Ward | School District 108 Hedstrom |
| Est. Birth Year | ~1925 |
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 Charles | Age | Birth yr |
|---|---|---|---|---|
| Ruth Chapman | Daughter | — | 13 | ~1927 |
| Lee Chapman | Son | — | 8 | ~1932 |
| Louis Chapman | Head | — | 48 | ~1892 |
| Lorraine Chapman | Daughter | — | 21 | ~1919 |
| Charles Chapman | Son | — | 18 | ~1922 |
| Phyllis Chapman | Spouse | — | 43 | ~1897 |
| Gerald Chapman | Son | — | 2 | ~1938 |
| Marjorie Chapman | Daughter | — | 11 | ~1929 |
| Charles Chapman | Son | — | 15 | ~1925 |
| Paul Chapman | Son | — | 4 | ~1936 |
Census Appearances
1930
Prairie, Montana
Son, age 5
Prairie, Montana · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chapman |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Montana |
| Father's Birthplace | South Dakota |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
1940
Prairie-County, Montana
Son, age 15
Prairie-County, Montana · implied b. ~1925 — 10 household members
| Surname | Chapman |
| Given Name | Charles |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Montana |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Prairie |
| Highest Grade | Hs 1 |
| 1935 Residence | Montana |
| Birth State | Montana |
| Birth Country | United States |
| Birthplace (normalized) | montana |
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 Charles Chapman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Charles Chapman
Son · 1940 · age 15 · b. ~1925 · Montana
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Sibling
Charles Chapman
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Chapman
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorraine Chapman
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lee Chapman
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Chapman
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gerald Chapman
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Chapman
Sibling · 1940 · age 11
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 — Prairie-County, Montana
Open full size
1940 US Federal Census — Prairie-County, Montana
Page Contents
25 people indexed on this census page (nara:1940:m-t0627-02227-00667)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Alvin Gackle | 19 | — | No | Montana |
| 42 | Richard Gackle | 16 | — | No | Montana |
| 43 | Ervin Gackle | 9 | — | — | Montana |
| 44 | Jacob G Gackle | 44 | Head | Farmer | Russia |
| 45 | Emma Gackle | 38 | Wife | No | North Dakota |
| 46 | Marion Gackle | 12 | Daughter | — | Montana |
| 47 | Marie Jean Gackle | 3 | Daughter | — | Montana |
| 48 | Leo Grost | 22 | Head | Farmer | North Dakota |
| 49 | Rosalie Grost | 24 | Wife | No | Montana |
| 50 | Jacqueline Grost | 3 | Daughter | — | Montana |
| 51 | William Anderson | 34 | Head | Ranch Manager | North Dakota |
| 52 | Ruth D Anderson | 31 | Wife | No | Montana |
| 53 | Lloyd Anderson | 27 | Brother | Ranch Hand | North Dakota |
| 54 | Elmer Liberson | 30 | Hired hand | Ranch Hand | Montana |
| 55 | Winnifred Livingston | 67 | Mother | Laborer | Pennsylvania |
| 56 | Louis Chapman | 48 | Head | Laborer | South Dakota |
| 57 | Phyllis Chapman | 43 | Wife | No | Iowa |
| 58 | Lorraine Chapman | 21 | Daughter | Salesman | Oregon |
| 59 | Charles Maurice Chapman | 18 | Son | — | Montana |
| 60 | Charles Chapman THIS PERSON | 15 | Son | — | Montana |
| 61 | Ruth Chapman | 13 | Daughter | — | Montana |
| 62 | Marjorie Chapman | 11 | Daughter | — | Montana |
| 63 | Lee Chapman | 8 | Son | — | Montana |
| 64 | Paul Chapman | 4 | Son | — | Montana |
| 65 | Gerald Chapman | 2 | Son | — | 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)