JC
John Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Madison-County, Illinois
Our Model Tree links this John Carlson across the 1920, 1930 and 1940 US Censuses in Madison-County, Illinois (XGBoost, ~Confirmed), with identified parents Ernest & Anna — first a son (b.~1916), then head of a 6-person household.
Age 24
b. ~1916
Male
Son
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Illinois |
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Madison Village |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Craneman |
| Industry | Steel Industry |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1000 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Craneman |
| Township / Ward | Madison Village |
| Est. Birth Year | ~1916 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Eva Carlson | Daughter | — | 24 | ~1916 |
| Mary Carlson | Daughter | — | 12 | ~1928 |
| Anna Carlson | Daughter | — | 19 | ~1921 |
| Ernest Carlson | Head | — | 50 | ~1890 |
| John Carlson | Son | — | 24 | ~1916 |
| Anna Carlson | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Madison, Illinois
Son, age 3
Madison, Illinois · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Madison, Illinois
Son, age 14
Madison, Illinois · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Madison-County, Illinois
Son, age 24
Madison-County, Illinois · implied b. ~1916 — 6 household members
| Surname | Carlson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Madison Village |
| 1935 Residence (County) | Madison |
| Occupation | Craneman |
| Industry | Steel Industry |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1000 |
| Highest Grade | No 7 |
| 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 John Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ernest Carlson (~0.92 confidence) and mother Anna Carlson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ernest Carlson
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Anna Carlson
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Carlson
Son · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
Eva Carlson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Carlson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Carlson
Sibling · 1940 · age 19
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 — Madison-County, Illinois
Open full size
1940 US Federal Census — Madison-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00850-00906)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | George Goucheff | 2 | Son | — | Illinois |
| 42 | Mary Ann Goucheff | 0 | Daughter | — | Illinois |
| 43 | Nick Lascu | 54 | Head | Street Cleaner | Rumania |
| 44 | Helen Lascu | 48 | Wife | — | Rumania |
| 45 | Mary Lascu | 25 | Daughter | Cash | Illinois |
| 46 | Stanley Meheles | 32 | Head | Blacksmith | New York |
| 47 | Mary Meheles | 56 | Mother | — | Poland |
| 48 | Alexandra Meheles | 21 | Sister | — | Illinois |
| 49 | John Meheles | 18 | Brother | Shoe | Illinois |
| 50 | Lulu Butcher | 52 | Head | Relief | Illinois |
| 51 | Goldie Butcher | 20 | Daughter | Laundress | Illinois |
| 52 | Edward Butcher | 23 | Son | Driver | Illinois |
| 53 | Leo Butcher | 16 | Son | News Dealer | Illinois |
| 54 | Viola Butcher | 13 | Daughter | — | Illinois |
| 55 | John Links | 57 | Head | Relief | Greece |
| 56 | Joseph Lupa | 50 | Head | — | Poland |
| 57 | Francis Lupa | 47 | Wife | — | Illinois |
| 58 | Gertrude Lupa | 23 | Daughter | — | Illinois |
| 59 | Curtis Marshall | 35 | Head | Laborer | Missouri |
| 60 | Marie Marshall | 29 | Wife | — | Missouri |
| 61 | Betty Marshall | 11 | Daughter | — | Illinois |
| 62 | Martha Marshall | 9 | Daughter | — | Missouri |
| 63 | Curtis Marshall | 6 | Son | — | Illinois |
| 64 | Joseph Chestnut | 35 | Head | Surveyor | Illinois |
| 65 | Marguerite Chestnut | 29 | Wife | — | Missouri |
| 66 | Clarence Chestnut | 18 | Son | — | Illinois |
| 67 | George Chestnut | 14 | Son | — | Grand |
| 68 | Richard Chestnut | 27 | Son | Clerk | — |
| 69 | Chestnut | 60 | Father | Retired | Poland |
| 70 | Ernest Carlson | 50 | Head | Machinist | Michigan |
| 71 | Anna Carlson | 45 | Wife | — | Illinois |
| 72 | Anna Mary Carlson | 19 | Daughter | — | Illinois |
| 73 | Mary Carlson | 12 | Daughter | — | Illinois |
| 74 | John Carlson THIS PERSON | 24 | Son | Craneman | Illinois |
| 75 | Eva Carlson | 24 | Daughter | — | Illinois |
| 76 | Richard Woods | 45 | Head | Safety Insp. | Missouri |
| 77 | Grace Woods | 41 | Wife | — | Texas |
| 78 | Ralph Capehart | 44 | Head | Janitor | Indiana |
| 79 | Mayme Capehart | 41 | Wife | — | Indiana |
| 80 | Charles Mahan | 41 | Head | Office Clerk | Illinois |
Related Census Records
Pedigree Summary
John + 3 siblings
Gen 1 · 2 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)