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Frank Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ogle-County, Illinois
Our Model Tree links this Frank Cox across the 1920, 1930 and 1940 US Censuses in Ogle-County, Illinois (XGBoost, ~Confirmed), with identified parents Fred & Grover — first a son (b.~1920), then head of a 3-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ogle-County, Illinois |
| Surname | Cox |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Oregon city |
| 1935 Residence (County) | Ogle |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Oregon City |
| Est. Birth Year | ~1920 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Frank | Age | Birth yr |
|---|---|---|---|---|
| Grace Cox | Spouse | — | 47 | ~1893 |
| Frank Cox | Son | — | 20 | ~1920 |
| Grover Cox | Head | — | 52 | ~1888 |
Census Appearances
1920
Ogle, Illinois
Son, age
Ogle, Illinois · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Frankie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Ogle, Illinois
Son, age 9
Ogle, Illinois · implied b. ~1921 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Ogle-County, Illinois
Son, age 20
Ogle-County, Illinois · implied b. ~1920 — 3 household members
| Surname | Cox |
| Given Name | Frank |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Oregon city |
| 1935 Residence (County) | Ogle |
| Class of Worker | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| 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 Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Fred Cox (~0.92 confidence) and father Grover Cox (~0.92 confidence) and father John Cox (~0.92 confidence) and mother Bessie Cox (~0.92 confidence) and mother Grace Cox (~0.92 confidence) and mother Grace Cox (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Fred Cox
b. ~1898
Source father
● Household
· direct · ~0.92
Father
Grover Cox
b. ~1888
Source father
● Household
· direct · ~0.92
Father
John Cox
b. ~1898
Source father
● Household
· direct · ~0.92
Mother
Bessie Cox
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Grace Cox
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Grace Cox
b. ~1902
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Frank Cox
Son · 1940 · age 20 · b. ~1920 · Illinois
★ 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 — Ogle-County, Illinois
Open full size
1940 US Federal Census — Ogle-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00863-00638)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Grover Cox | 52 | Head | Truck Driver | Illinois |
| 2 | Grace Cox | 47 | Wife | — | Illinois |
| 3 | Frank Cox THIS PERSON | 20 | Son | — | Illinois |
| 4 | John Fraser | 78 | Head | — | Illinois |
| 5 | Henry Christensen | 77 | Head | Shoe Cobbler | Denmark |
| 6 | Adolph Christensen | 30 | Son | Bartender | Wisconsin |
| 7 | Carrie Kelser | 33 | Head | — | Illinois |
| 8 | Luella Kelser | 15 | Daughter | — | Illinois |
| 9 | Marian Kelser | 13 | Daughter | — | Illinois |
| 10 | Lois Kelser | 12 | Daughter | — | Illinois |
| 11 | Donna Jean Kelser | 11 | Daughter | — | Illinois |
| 12 | Robert Kelser | 10 | Son | — | Illinois |
| 13 | Fred Shugars | 22 | Lodger | Pumper | Illinois |
| 14 | William Wright | 59 | Head | Blaster | Illinois |
| 15 | Ida Wright | 56 | Wife | — | Illinois |
| 16 | Spencer Wright | 33 | Son | Bridge Filler | Illinois |
| 17 | Emory Wright | 31 | Son | Chipper | Illinois |
| 18 | Margaret Canode | 75 | Head | — | Illinois |
| 19 | George Chasm | 54 | Head | Proprietor | Illinois |
| 20 | Iris Chasm | 51 | Wife | Proprietor | Illinois |
| 21 | James Chasm | 20 | Son | New Worker | Illinois |
| 22 | Horace Chasm | 17 | Son | — | Illinois |
| 23 | Sadie Deyater | 35 | Head | Trained Nurse | Illinois |
| 24 | Lillian Shults | 46 | Head | Sales Clerk | Illinois |
| 25 | Rose Mcguigan | 70 | Mother | — | Illinois |
| 26 | Harriett Miller | 20 | Lodger | Secretary | Illinois |
| 27 | Albert Braham | 51 | Head | Night Watchman | Illinois |
| 28 | Essie Braham | 45 | Wife | — | Iowa |
| 29 | Albert Jr. Braham | 19 | Son | Core Maker | Iowa |
| 30 | Harry Carman | 64 | Head | Proprietor | Illinois |
| 31 | Ella Carman | 63 | Wife | — | Illinois |
| 32 | Elsie Mullen | 37 | Lodger | Dish Washer | Illinois |
| 33 | Robert Colson | 33 | Head | Machinist | Illinois |
| 34 | Elizabeth Colson | 23 | Wife | — | Illinois |
| 35 | Donald Colson | 5 | Son | — | Illinois |
| 36 | Marilyn Colson | 1 | Daughter | — | Illinois |
| 37 | William Smith | 63 | Head | — | Illinois |
| 38 | Grace Smith | 64 | Wife | — | Illinois |
| 39 | George Schroeder | 51 | Head | Bookkeeper | Illinois |
| 40 | Mamie Schroeder | 48 | Wife | — | Missouri |
Pedigree Summary
Frank
Gen 1 · 6 parents
~0.92
Max depth 4 (1900–1950 window)
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)