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Charles Armstrong — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Knox-County, Illinois
Our Model Tree links this Charles Armstrong across the 1930 and 1940 US Censuses in Knox-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 10-person household.
Age 16
b. ~1924
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Knox-County, Illinois |
| Surname | Armstrong |
| Given Name | Charles Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galesburg |
| 1935 Residence (County) | Knox |
| Additional Details | |
| Occupation | News worker |
| Class of Worker | PW |
| Hours Worked | 3 |
| Highest Grade | 7 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | News Worker |
| Township / Ward | East Galesburg Village |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| Charles Armstrong | Son | — | 16 | ~1924 |
| Agnes Armstrong | Daughter | — | 19 | ~1921 |
| Ronald Armstrong | Son | — | 5 | ~1935 |
| Florence Armstrong | Spouse | — | 42 | ~1898 |
| Charles Armstrong | Head | — | 54 | ~1886 |
| Betsy Armstrong | Daughter | — | 6 | ~1934 |
| Phyllis Armstrong | Daughter | — | 11 | ~1929 |
| Bobby Armstrong | Son | — | 9 | ~1931 |
| Laverne Armstrong | Son | — | 3 | ~1937 |
| Richard Armstrong | Son | — | 13 | ~1927 |
Census Appearances
1930
Knox, Illinois
Son, age 5
Knox, Illinois · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Charles Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Knox-County, Illinois
Son, age 16
Knox-County, Illinois · implied b. ~1924 — 10 household members
| Surname | Armstrong |
| Given Name | Charles Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Galesburg |
| 1935 Residence (County) | Knox |
| Occupation | News worker |
| Class of Worker | PW |
| Hours Worked | 3 |
| Highest Grade | 7 |
| 1935 Residence | Illinois |
| 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 Charles Armstrong across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Charles Armstrong
Son · 1940 · age 16 · b. ~1924 · Illinois
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Sibling
Ronald Armstrong
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Armstrong
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Armstrong
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bobby Armstrong
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laverne Armstrong
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Armstrong
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betsy Armstrong
Sibling · 1940 · age 6
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 — Knox-County, Illinois
Open full size
1940 US Federal Census — Knox-County, Illinois
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00827-00086)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Larson | 42 | Wife | — | Illinois |
| 2 | Betty Goff | 20 | Daughter | — | Iowa |
| 3 | W. H. Halliday | 48 | Head | Osteopath | Missouri |
| 4 | Edna Halliday | 33 | Wife | — | Kansas |
| 5 | Richard Halliday | 18 | Son | Salesman | Illinois |
| 6 | William Griffith | 69 | Head | — | Illinois |
| 7 | Mary Griffith | 59 | Wife | — | Iowa |
| 8 | William Griffith | 25 | Son | Welder | Illinois |
| 9 | Walter Coulter | 34 | Head | Farm Hand | Missouri |
| 10 | Dorothy Coulter | 25 | Wife | Maid | Illinois |
| 11 | Robert Coulter | 15 | Son | — | Illinois |
| 12 | Kenneth Coulter | 13 | Son | — | Illinois |
| 13 | Charles Armstrong | 54 | Head | Head Painter | Illinois |
| 14 | Florence Armstrong | 42 | Wife | — | Illinois |
| 15 | Agnes Armstrong | 19 | Daughter | — | Illinois |
| 16 | Charles Jr. Armstrong THIS PERSON | 16 | Son | News Worker | Illinois |
| 17 | Richard Armstrong | 13 | Son | — | Illinois |
| 18 | Phyllis Armstrong | 11 | Daughter | — | Illinois |
| 19 | Bobby Armstrong | 9 | Son | — | Illinois |
| 20 | Betsy Armstrong | 6 | Daughter | — | Wisconsin |
| 21 | Ronald Armstrong | 5 | Son | — | Illinois |
| 22 | Laverne Armstrong | 3 | Son | — | Illinois |
| 23 | William Selfridge | 42 | Head | Coal Miner | Illinois |
| 24 | Anne Selfridge | 37 | Wife | Practitioner | Illinois |
| 25 | Mary Ellen Selfridge | 8 | Daughter | — | Illinois |
| 26 | Robert Lowman | 54 | Head | Laborer | Kentucky |
| 27 | Mary Lowman | 52 | Wife | — | Illinois |
| 28 | Frank Brady | 70 | Boarder | — | Kansas |
| 29 | Hans Hanson | 59 | Head | Car-Man | Sweden |
| 30 | Marie Hanson | 39 | Wife | — | Sweden |
| 31 | Verna Hanson | 6 | Daughter | — | Illinois |
| 32 | Ate Swanson | 56 | Hired Hand | Hired Hand | Sweden |
| 33 | Harvey Hall | 48 | Head | Machinist | Indiana |
| 34 | Amalida Hall | 46 | Wife | — | Kentucky |
| 35 | George Hall | 19 | Son | Machinist Helper | Illinois |
| 36 | Barbara Hall | 15 | Daughter | — | Illinois |
| 37 | Lula Hall | 12 | Daughter | — | Illinois |
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)