WC
William Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this William Carlson across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Nellie — first a head (b.~1908), then head of a 5-person household.
Age 32
b. ~1908
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Carlson |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | brakeman |
| Industry | steam railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1848 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Brakeman |
| Township / Ward | Denver City |
| Est. Birth Year | ~1908 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Carlson | Head | — | 32 | ~1908 |
| Angeline Carlson | Spouse | — | 31 | ~1909 |
| Jeannine Carlson | Daughter | — | 4 | ~1936 |
| Sally Carlson | Daughter | — | 9 | ~1931 |
| Patty Carlson | Daughter | — | 11 | ~1929 |
Census Appearances
1920
Denver, Colorado
Son, age 11
Denver, Colorado · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | William A |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Colorado |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Head, age 22
Denver, Colorado · implied b. ~1908 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | William A. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 18 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Colorado |
| Occupation | Brakeman |
| Industry | Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 18 |
| Radio Set | R |
| Veteran | No |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Head, age 32
Denver-County, Colorado · implied b. ~1908 — 5 household members
| Surname | Carlson |
| Given Name | William |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Occupation | brakeman |
| Industry | steam railroad |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1848 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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: mother Nellie Carlson (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Nellie Carlson
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Carlson
Head · 1940 · age 32 · b. ~1908 · Colorado
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00485-00884)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gertrude Clark | 30 | wife | Waitress | Missouri |
| 2 | Marilyn Clark | 18 | daughter | — | Colorado |
| 3 | Le Roy Mcanally | 10 | son | — | Colorado |
| 4 | Estelle Keefe | 42 | head | Power Operator | Illinois |
| 5 | Howard Keefe | 17 | son | New Worker | Illinois |
| 6 | Richard Keefe | 12 | son | — | Illinois |
| 7 | Raymond Bauer | 24 | head | Laborer | Colorado |
| 8 | Elaine Bauer | 22 | wife | — | Colorado |
| 9 | Robert Bauer | 2 | son | — | Colorado |
| 10 | Patty Ann Bauer | 0 | daughter | — | Colorado |
| 11 | Nellie Brayton | 55 | head | Laundress | Colorado |
| 12 | Dorothy Brayton | 19 | daughter | Assistant Office | Colorado |
| 13 | Betty Brayton | 16 | daughter | — | Colorado |
| 14 | William Carlson THIS PERSON | 32 | head | Brakeman | Colorado |
| 15 | Angeline Carlson | 31 | wife | — | Colorado |
| 16 | Patty Carlson | 11 | daughter | — | Colorado |
| 17 | Sally Carlson | 9 | daughter | — | Colorado |
| 18 | Jeannine Carlson | 4 | daughter | — | Colorado |
| 19 | John Butler | 51 | head | Butcher | Texas |
| 20 | Ruby Butler | 42 | wife | — | Tennessee |
| 21 | Raymond Butler | 28 | son | Driver | Oklahoma |
| 22 | James Butler | 24 | son | New Worker | Kansas |
| 23 | John Jr. Butler | 13 | son | — | Colorado |
| 24 | John Walsh | 63 | head | — | Iowa |
| 25 | Nellie Walsh | 60 | wife | — | Nebraska |
| 26 | Frances Walsh | 17 | daughter | — | Colorado |
| 27 | Christina Peterson | 77 | head | — | Norway |
| 28 | William Opie | 34 | head | Jeweler | Colorado |
| 29 | Esther Opie | 29 | wife | — | Colorado |
| 30 | William Jr. Opie | 8 | son | — | Colorado |
| 31 | Carole Jean Opie | 4 | daughter | — | Colorado |
| 32 | Leonard Nelson | 55 | head | Tilesetter | Sweden |
| 33 | Agnes Nelson | 57 | wife | — | Sweden |
| 34 | — | None | — | — | — |
| 35 | Samuel Schwindt | 33 | head | Driver | Kansas |
| 36 | Katherine Schwindt | 32 | wife | — | Russia |
| 37 | Dorothy J. Schwindt | 13 | daughter | — | Colorado |
| 38 | Joseph L. Schwindt | 11 | son | — | Colorado |
| 39 | Mary Ann Schwindt | 8 | daughter | — | Colorado |
| 40 | Martin J. Schwindt | 2 | son | — | Colorado |
Pedigree Summary
William
Gen 1 · 1 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)