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William Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Webster-County, Iowa
Our Model Tree links this William Larson across the 1930 and 1940 US Censuses in Webster-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Webster-County, Iowa |
| Surname | Larson |
| Given Name | William D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ft. Dodge |
| 1935 Residence (County) | Webster |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Ft Dodge |
| Est. Birth Year | ~1928 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Hulda Larson | Spouse | — | 31 | ~1909 |
| Donald Larson | Son | — | 2 | ~1938 |
| Louise Larson | Daughter | — | 6 | ~1934 |
| William Larson | Son | — | 12 | ~1928 |
| Roland Larson | Son | — | 9 | ~1931 |
| Arvid Larson | Head | — | 36 | ~1904 |
Census Appearances
1930
Webster, Iowa
Son, age 1
Webster, Iowa · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | William D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Webster-County, Iowa
Son, age 12
Webster-County, Iowa · implied b. ~1928 — 6 household members
| Surname | Larson |
| Given Name | William D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Ft. Dodge |
| 1935 Residence (County) | Webster |
| Highest Grade | 5 |
| 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 Larson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Larson
Son · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Roland Larson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Larson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Larson
Sibling · 1940 · age 2
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 — Webster-County, Iowa
Open full size
1940 US Federal Census — Webster-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01212-01051)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Garrett | 53 | Head | Engineer | Kansas |
| 2 | Alice Garrett | 50 | Wife | — | Missouri |
| 3 | Alice G Garrett | 29 | Daughter | Stenographer | Iowa |
| 4 | Ruby F Garrett | 23 | Daughter | Bookkeeper | Iowa |
| 5 | Mary J Garrett | 19 | Daughter | — | Iowa |
| 6 | Tom Coady | 57 | Head | Sub Foreman | Iowa |
| 7 | Esther Coady | 42 | Wife | — | Iowa |
| 8 | Joy C Coady | 19 | Son | Milk Pickup | Iowa |
| 9 | Ben W Presler | 29 | Head | Machine Mfg | Iowa |
| 10 | Edna D Presler | 28 | Wife | — | Iowa |
| 11 | Jack L Presler | 10 | Son | — | Iowa |
| 12 | Dorothy M Presler | 9 | Daughter | — | Iowa |
| 13 | Helen M Presler | 6 | Daughter | — | Iowa |
| 14 | Duane F Presler | 5 | Son | — | Iowa |
| 15 | Bobby D Presler | 2 | Son | — | Iowa |
| 16 | John S Steib | 56 | Head | Ironworker | Russia |
| 17 | Elizabeth K Steib | 53 | Wife | — | Russia |
| 18 | Gertrude E Steib | 27 | Daughter | Poultry Picker | So. Dakota |
| 19 | John J Steib | 25 | Son | Warehouseman | Kansas |
| 20 | Ann M Steib | 21 | Daughter | Poultry Picker | Iowa |
| 21 | Conrad G Steib | 18 | Son | — | Iowa |
| 22 | Jacob Steib | 16 | Son | — | Iowa |
| 23 | Martha K Steib | 11 | Daughter | — | Iowa |
| 24 | Joseph N Steib | 10 | Son | — | Iowa |
| 25 | Raymond E Elliott | 28 | Head | Miner | Iowa |
| 26 | Hazel M Elliott | 26 | Wife | — | Iowa |
| 27 | Anita J Elliott | 3 | Daughter | — | Iowa |
| 28 | Ernest Elliott | 36 | Brother | Brakeman | Iowa |
| 29 | Arvid H Larson | 36 | Head | — | Iowa |
| 30 | Hulda A Larson | 31 | Wife | — | So. Dakota |
| 31 | William D Larson THIS PERSON | 12 | Son | — | Iowa |
| 32 | Roland L Larson | 9 | Son | — | Iowa |
| 33 | Louise Larson | 6 | Daughter | — | Iowa |
| 34 | Donald L Larson | 2 | Son | — | Iowa |
| 35 | Peter N Paap | 74 | Head | — | Germany |
| 36 | Minnie Paap | 66 | Wife | — | Iowa |
| 37 | Marie E Horton | 41 | Daughter | Saleslady | Iowa |
| 38 | Genevieve J Paap | 20 | Granddaughter | Stenographer | Iowa |
| 39 | Nancy E Horton | 8 | Granddaughter | — | Iowa |
| 40 | John W Whelchel | 48 | Head | Engineer | Iowa |
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)