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Frank Fox — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Lasalle-County, Illinois
Our Model Tree links this Frank Fox across the 1920, 1930 and 1940 US Censuses in Lasalle-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1893), then head of a 6-person household.
Age 47
b. ~1893
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Lasalle-County, Illinois |
| Surname | Fox |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Mendota |
| 1935 Residence (County) | La Salle |
| Additional Details | |
| Occupation | Hired Man |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 525 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Hired Man |
| Township / Ward | Mendota |
| Est. Birth Year | ~1893 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Frank Fox | Head | — | 47 | ~1893 |
| Ralph Fox | Son | — | 9 | ~1931 |
| Mildred Fox | Daughter | — | 12 | ~1928 |
| Mabel Fox | Spouse | — | 35 | ~1905 |
| Marie Fox | Daughter | — | 6 | ~1934 |
| Ruth Fox | Daughter | — | 14 | ~1926 |
Census Appearances
1920
Lee, Illinois
Head, age 27
Lee, Illinois · implied b. ~1893 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | Frank M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | England |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | O |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Lee, Illinois
Head, age 36
Lee, Illinois · implied b. ~1894 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | O |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | No |
| Home Value / Rent | O |
| Radio Set | 56 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Lasalle-County, Illinois
Head, age 47
Lasalle-County, Illinois · implied b. ~1893 — 6 household members
| Surname | Fox |
| Given Name | Frank |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Mendota |
| 1935 Residence (County) | La Salle |
| Occupation | Hired Man |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 52 |
| Income (1939) | 525 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| 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 Frank Fox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Frank Fox
Head · 1940 · age 47 · b. ~1893 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Lasalle-County, Illinois
Open full size
1940 US Federal Census — Lasalle-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00833-00800)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pearl Truckenbrod | 12 | Daughter | — | Illinois |
| 42 | Everett Baumgartner | 34 | Head | Farmer | Illinois |
| 43 | Hilda Baumgartner | 32 | Wife | Housewife | Illinois |
| 44 | Bruce Baumgartner | 2 | Son | — | Illinois |
| 45 | James Jr Shannon | 35 | Head | Farmer | Kentucky |
| 46 | Anita Shannon | 35 | Wife | Housewife | Kentucky |
| 47 | Helen Shannon | 15 | Daughter | — | Kentucky |
| 48 | Gerald Shannon | 12 | Son | — | Illinois |
| 49 | Ella Bayne Shannon | 10 | Daughter | — | Illinois |
| 50 | Joyce Shannon | 6 | Daughter | — | Illinois |
| 51 | James 3Rd Shannon | 2 | Son | — | Illinois |
| 52 | Montone Piller | 27 | Head | Farmer | Illinois |
| 53 | Marie Piller | 20 | Wife | Housewife | Illinois |
| 54 | Mary Piller | 0 | Daughter | — | Illinois |
| 55 | May Borlaugh | 64 | Head | — | Norway |
| 56 | Audrey Borlaugh | 32 | Daughter | — | Illinois |
| 57 | Theodore Borlaugh | 31 | Son | Farmer | Illinois |
| 58 | Ellen Borlaugh | 23 | Daughter | — | Illinois |
| 59 | Edward Rybacki | 22 | Lodger | Hired Man | Illinois |
| 60 | Amos Buck | 45 | Head | Farmer | Illinois |
| 61 | Erma Buck | 43 | Wife | Housewife | Illinois |
| 62 | Joyce Buck | 14 | Daughter | — | Illinois |
| 63 | George Kaiser | 54 | Head | Farming | Illinois |
| 64 | Margaret Kaiser | 49 | Wife | Housewife | Illinois |
| 65 | Wilbert Kaiser | 23 | Son | Day Labor | Illinois |
| 66 | Gerald Kaiser | 16 | Son | — | Illinois |
| 67 | Delmar Kaiser | 21 | Son | Milk Route | Illinois |
| 68 | Rita Kaiser | 18 | Daughter | Housekeeper | Illinois |
| 69 | Arnold Kaiser | 5 | Grandson | — | Illinois |
| 70 | John Buck | 75 | Head | Retired Farmer | Illinois |
| 71 | Harriet Buck | 71 | Wife | Housewife | New York |
| 72 | Elroy Mathesius | 29 | Head | Farmer | Illinois |
| 73 | Alva Mathesius | 25 | Wife | Housewife | Illinois |
| 74 | Claramont Mathesius | 3 | Son | — | Illinois |
| 75 | Frank Fox THIS PERSON | 47 | Head | Hired Man | Illinois |
| 76 | Mabel Fox | 35 | Wife | Housewife | Illinois |
| 77 | Ruth Fox | 14 | Daughter | — | Illinois |
| 78 | Mildred Fox | 12 | Daughter | — | Illinois |
| 79 | Ralph Fox | 9 | Son | — | Illinois |
| 80 | Marie Fox | 6 | 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)