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William Carlson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Clinton, Iowa
Our Model Tree links this William Carlson across the 1920, 1930 and 1940 US Censuses in Clinton, Iowa (XGBoost, ~Confirmed), with identified parents Alford & Alfred — first a son (b.~1919), then head of a 4-person household.
Age 11
b. ~1919
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Clinton, Iowa |
| Surname | Carlson |
| Given Name | William R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | City Of Clinton |
| Est. Birth Year | ~1919 |
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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mabel Carlson | Other | — | 39 | ~1891 |
| Vernon Carlson | Son | — | 10 | ~1920 |
| William Carlson | Son | — | 11 | ~1919 |
| Alfred Carlson | Head | — | 32 | ~1898 |
Census Appearances
1920
Clinton, Iowa
Son, age 1
Clinton, Iowa · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clinton, Iowa
Son, age 11
Clinton, Iowa · implied b. ~1919 — 4 household members
| Surname | Carlson |
| Given Name | William R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clinton-County, Iowa
Son, age 21
Clinton-County, Iowa · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlsen |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Clinton City |
| 1935 Residence (County) | Clinton |
| Occupation | Laborer |
| Industry | Sugar Refinery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 780 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 William Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alford Carlson (~0.92 confidence) and father Alfred Carlson (~0.92 confidence) and mother Mabel Carlsen (~0.92 confidence) and mother Mabel Carlson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alford Carlson
b. ~1899
Source father
● Household
· direct · ~0.92
Father
Alfred Carlson
b. ~1898
Source father
● Household
· direct · ~0.92
Mother
Mabel Carlsen
b. ~1897
Source mother
● Household
· direct · ~0.92
Mother
Mabel Carlson
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Carlson
Son · 1930 · age 11 · b. ~1919 · Iowa
★ You are viewing this record
Sibling
Vernon Carlson
Sibling · 1930 · age 10
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
1930 US Federal Census — Clinton, Iowa
Open full size
1930 US Federal Census — Clinton, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel649:0994)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harold Jorgensen | 17 | Son | — | Iowa |
| 2 | Alice Jorgensen | 14 | Son | — | Iowa |
| 3 | Nellie Grady | 62 | Head | — | Illinois |
| 4 | James F. Grady | 60 | Brother | Blacksmith Helper | Iowa |
| 5 | Alfred Carlson | 32 | Head | Stationary Fireman | Iowa |
| 6 | Mabel H. Carlson | 39 | Wife-H | — | Iowa |
| 7 | William R. Carlson THIS PERSON | 11 | Son | — | Iowa |
| 8 | Vernon C. Carlson | 10 | Son | — | Iowa |
| 9 | Peter M. Lind | 76 | Head | Laborer | Denmark |
| 10 | Anna S. Lind | 77 | Wife-H | — | Denmark |
| 11 | Edward W. Smith | 60 | Head | Pattern Maker | Iowa |
| 12 | Martha H. Smith | 47 | Wife-H | — | Iowa |
| 13 | Louis C. Smith | 21 | Son | Plumber | Iowa |
| 14 | Lillian C. Smith | 20 | Daughter | — | Iowa |
| 15 | Helen M. Smith | 15 | Daughter | — | Iowa |
| 16 | Thomas Simpson | 39 | Head | Student | Illinois |
| 17 | Florence B. Simpson | 30 | Wife-H | — | Illinois |
| 18 | Rosella Simpson | 7 | Daughter | — | Illinois |
| 19 | Loren Simpson | 5 | Son | — | Illinois |
| 20 | Hilton Simpson | 2 | Son | — | Illinois |
| 21 | Merritt S. Swigart | 49 | Head | Engineer | Iowa |
| 22 | Mable C. Swigart | 45 | Wife-H | — | Iowa |
| 23 | Truthe M. Swigart | 24 | Daughter | Nurse | Iowa |
| 24 | Madge Swigart | 18 | Daughter | — | Iowa |
| 25 | Dorothy Swigart | 16 | Daughter | — | Iowa |
| 26 | Maxine Swigart | 10 | Daughter | — | Iowa |
| 27 | Ray M. Swigart | 7 | Son | — | Iowa |
| 28 | Robert C. Foster | 38 | Head | Conductor | Iowa |
| 29 | Helen C. Foster | 38 | Wife-H | — | Iowa |
| 30 | Robert C. Foster | 15 | Son | — | Iowa |
| 31 | Richard C. Zollinger | 31 | Head | Fireman | Kansas |
| 32 | Letha B. Zollinger | 27 | Wife-H | — | Iowa |
| 33 | John R. Zollinger | 3 | Son | — | Iowa |
| 34 | Fred C. Ziehen | 41 | Head | Fireman | Iowa |
| 35 | Martha L. Ziehen | 41 | Wife-H | — | Iowa |
| 36 | Evelyn Ziehen | 17 | Daughter | — | Iowa |
| 37 | Geraldine L. Ziehen | 7 | Daughter | — | Iowa |
| 38 | Henry D. Littleton | 36 | Head | Brakeman | Iowa |
| 39 | Edna C. Littleton | 34 | Wife-H | — | Pennsylvania |
| 40 | Donald H. Littleton | 11 | Son | — | Iowa |
| 41 | June L. Littleton | 9 | Daughter | — | Iowa |
| 42 | Elmer H. Littleton | 7 | Son | — | Iowa |
| 43 | Kenneth H. Littleton | 3 | Son | — | Iowa |
| 44 | Alfred W. Littleton | 1 | Son | — | Iowa |
| 45 | Jesse C. Theil | 44 | Head | Welder | Illinois |
| 46 | Pearl A. Theil | 50 | Wife-H | — | Illinois |
| 47 | Peter W. Lockadahl | 39 | Head | Carpenter | Iowa |
| 48 | Edna L. Lockadahl | 34 | Wife-H | — | Iowa |
| 49 | Lorraine C. Lockadahl | 10 | Daughter | — | Iowa |
| 50 | Jacqueline A. Lockadahl | 5 | Daughter | — | Iowa |
Pedigree Summary
William + 1 sibling
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)