CM
Charles Mueller — 1940 US Census Record
Model Tree available1940 United States Federal Census · Linn-County, Iowa
Our Model Tree links this Charles Mueller across the 1920, 1930 and 1940 US Censuses in Linn-County, Iowa (XGBoost, ~Confirmed), with identified parents C & Charles — first a son (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Linn-County, Iowa |
| Surname | Mueller |
| Given Name | Charles E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Father |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 520 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Chauffeur |
| Township / Ward | Cedar Rapids |
| Est. Birth Year | ~1918 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| Paul Mueller | Son | — | 18 | ~1922 |
| C Mueller | Head | — | 61 | ~1879 |
| Anna Mueller | Spouse | — | 56 | ~1884 |
| Charles Mueller | Son | — | 22 | ~1918 |
Census Appearances
1920
Linn, Iowa
Son, age 2
Linn, Iowa · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Muller |
| Given Name | Charles E Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Linn, Iowa
Son, age 12
Linn, Iowa · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mueller |
| Given Name | Charles E. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Linn-County, Iowa
Son, age 22
Linn-County, Iowa · implied b. ~1918 — 4 household members
| Surname | Mueller |
| Given Name | Charles E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Occupation | Chauffeur |
| Industry | Father |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 520 |
| Highest Grade | H 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Mueller across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father C Mueller (~0.92 confidence) and father Charles Muller (~0.92 confidence) and father Charles Mueller (~0.92 confidence) and mother Anna Muller (~0.92 confidence) and mother Anna Mueller (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
C Mueller
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Charles Muller
b. ~1880
Source father
● Household
· direct · ~0.92
Father
Charles Mueller
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Anna Muller
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Anna Mueller
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Mueller
Son · 1940 · age 22 · b. ~1918 · Iowa
★ You are viewing this record
Sibling
Paul Mueller
Sibling · 1940 · age 18
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 — Linn-County, Iowa
Open full size
1940 US Federal Census — Linn-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01176-00350)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert De Bont | 55 | Head | Contractor | Holland |
| 42 | Pauline De Bont | 44 | Wife | — | Iowa |
| 43 | Margaret De Bont | 18 | Daughter | Saleslady | Iowa |
| 44 | Betty June De Bont | 16 | Daughter | — | Iowa |
| 45 | Mervin Severance | 31 | Lodger | Auditor | Illinois |
| 46 | James Brewer | 27 | Head | Service Man | Iowa |
| 47 | Jane Brewer | 26 | Wife | — | Iowa |
| 48 | James Brewer | 3 | Son | — | Iowa |
| 49 | John Brewer | 2 | Son | — | Iowa |
| 50 | Birdie Robinson | 62 | Head | — | Iowa |
| 51 | Harry Robinson | 33 | Son | Truck Driver | Iowa |
| 52 | Sylvia Q. Robinson | 37 | Wife | Housekeeper | Iowa |
| 53 | Alice Rogers | 49 | Lodger | Teacher | Iowa |
| 54 | Herman J. Thompson | 58 | Head | Conductor | South Dakota |
| 55 | Cora V. Thompson | 59 | Wife | — | Iowa |
| 56 | Allan Thompson | 22 | Son | Statistician | South Dakota |
| 57 | Shirley Ann Thompson | 15 | Daughter | — | Iowa |
| 58 | John E. Denton | 42 | Head | Manager | Iowa |
| 59 | Ellen Q. Denton | 39 | Wife | — | Iowa |
| 60 | Jean Denton | 13 | Daughter | — | Iowa |
| 61 | Mary Denton | 10 | Daughter | — | Iowa |
| 62 | B. H. Hammond | 70 | Head | — | Maryland |
| 63 | Emma Hammond | 63 | Wife | — | Maryland |
| 64 | Margarette Hammond | 35 | Daughter | Bookkeeper | Maryland |
| 65 | Wayne Arenaman | 42 | Head | Manager | Texas |
| 66 | Mildred Arenaman | 33 | Wife | Teacher | Iowa |
| 67 | Robert Rogers | 26 | Head | Utility Clerk | Texas |
| 68 | Helen Rogers | 25 | Wife | — | Oklahoma |
| 69 | C. E. Mueller | 61 | Head | President | Iowa |
| 70 | Anna Mueller | 56 | Wife | — | Iowa |
| 71 | Charles E. Mueller THIS PERSON | 22 | Son | Chauffeur | Iowa |
| 72 | Paul H. Mueller | 18 | Son | Carrier | Iowa |
| 73 | A. L. Buffer | 46 | Head | Agent Freight | Illinois |
| 74 | Verne Buffer | 42 | Wife | — | Iowa |
| 75 | Donnabelle Buffer | 22 | Daughter | Stenographer | Iowa |
| 76 | Aly Buffer | 10 | Son | — | Iowa |
| 77 | Thomas O. Dunlop | 69 | Head | Millwright | Scotland |
| 78 | Lois Kusel | 18 | Head | New Worker | Iowa |
| 79 | Martha Lorenc | 24 | Partner | Bookkeeping | Iowa |
| 80 | Mona Putnam | 21 | Partner | Stenographer | Iowa |
Pedigree Summary
Charles + 1 sibling
Gen 1 · 5 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)