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John Mueller — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Mueller across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 6-person household.
Age 45
b. ~1895
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Mueller |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Elk Grove Trp. |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 65 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Elk Grove Trp |
| Est. Birth Year | ~1895 |
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 |
|---|---|---|---|---|
| Ardell Mueller | Daughter | — | 1 | ~1939 |
| Irene Mueller | Daughter | — | 6 | ~1934 |
| John Mueller | Head | — | 45 | ~1895 |
| Leroy Mueller | Son | — | 5 | ~1935 |
| Leonard Mueller | Son | — | 10 | ~1930 |
| Emma Mueller | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Cook, Illinois
Head, age 34
Cook, Illinois · implied b. ~1896 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Clerk |
| Industry | Cigar Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60.00 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 45
Cook-County, Illinois · implied b. ~1895 — 6 household members
| Surname | Mueller |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Elk Grove Trp. |
| 1935 Residence (County) | Cook |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 65 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 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 Mueller across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mueller
Head · 1940 · age 45 · b. ~1895 · 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00778-00053)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Grimm | 34 | Head | Farmer | Illinois |
| 2 | Martha Grimm | 33 | Wife | — | Illinois |
| 3 | Lorine Grimm | 10 | Daughter | — | Illinois |
| 4 | Junia Grimm | 7 | Daughter | — | Illinois |
| 5 | Ernest Grimm | 5 | Son | — | Illinois |
| 6 | Stanley David | 35 | Lodger | Laborer | Russia |
| 7 | William Moellenkamp | 44 | Head | Farmer | Illinois |
| 8 | Thelma Moellenkamp | 38 | Wife | — | Illinois |
| 9 | William Moellenkamp | 13 | Son | — | Illinois |
| 10 | Dolores Moellenkamp | 11 | Daughter | — | Illinois |
| 11 | Richard Moellenkamp | 4 | Son | — | Illinois |
| 12 | Alfred Moellenkamp | 36 | Head | Farmer | Illinois |
| 13 | Meta Moellenkamp | 37 | Wife | — | Illinois |
| 14 | Leroy Moellenkamp | 7 | Son | — | Illinois |
| 15 | Harriet Moellenkamp | 5 | Daughter | — | Illinois |
| 16 | Clifford Moellenkamp | 1 | Son | — | Illinois |
| 17 | Arthur Hausman | 16 | Lodger | Laborer | Illinois |
| 18 | William Mueller | 53 | Head | Farmer | Illinois |
| 19 | Mary Mueller | 52 | Wife | — | Illinois |
| 20 | Irwin Mueller | 24 | Son | Laborer | Illinois |
| 21 | Emory Mueller | 21 | Son | Laborer | Illinois |
| 22 | Norbert Mueller | 19 | Son | Laborer | Illinois |
| 23 | Marion Mueller | 13 | Daughter | — | Illinois |
| 24 | Joseph Poc | 32 | Head | Laborer | Slovakia |
| 25 | Emma Poc | 31 | Wife | — | Illinois |
| 26 | Joseph Poc | 8 | Son | — | Illinois |
| 27 | Dorothy Poc | 6 | Daughter | — | Illinois |
| 28 | Henry W. Mueller | 58 | Head | Farmer | Illinois |
| 29 | Alvina Mueller | 58 | Wife | — | Illinois |
| 30 | Harvey Mueller | 21 | Son | Laborer | Illinois |
| 31 | Lucille Mueller | 19 | Daughter | Servant | Illinois |
| 32 | John F. Mueller THIS PERSON | 45 | Head | Farmer | Illinois |
| 33 | Emma Mueller | 38 | Wife | — | Illinois |
| 34 | Leonard Mueller | 10 | Son | — | Illinois |
| 35 | Irene Mueller | 6 | Daughter | — | Illinois |
| 36 | Leroy Mueller | 5 | Son | — | Illinois |
| 37 | Ardell Mueller | 1 | Daughter | — | Illinois |
| 38 | Emil Schuke | 58 | Head | Farmer | Germany |
| 39 | Amanda Schuke | 53 | Wife | — | Illinois |
| 40 | Gertrude Schuke | 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)