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Carl Carlson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Carl Carlson across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Carlson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Paper Hanger |
| Industry | Free-Lance |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Paper Hanger |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1917 |
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 Carl | Age | Birth yr |
|---|---|---|---|---|
| Ruth Carlson | Daughter | — | 25 | ~1915 |
| Mildred Carlson | Daughter | — | 18 | ~1922 |
| John Carlson | Head | — | 67 | ~1873 |
| Carl Carlson | Son | — | 23 | ~1917 |
| Richard Carlson | Son | — | 15 | ~1925 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 2
Allegheny, Pennsylvania · implied b. ~1918
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Carlson |
| Given Name | Carl J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 13
Allegheny, Pennsylvania · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Carl J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 23
Allegheny-County, Pennsylvania · implied b. ~1917 — 5 household members
| Surname | Carlson |
| Given Name | Carl |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Paper Hanger |
| Industry | Free-Lance |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Carl Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Carlson (~0.92 confidence) and father John Carlson (~0.92 confidence) and mother Laura Carlson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Carlson
b. ~1873
Source father
● Household
· direct · ~0.92
Father
John Carlson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Laura Carlson
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Carl Carlson
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Ruth Carlson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Carlson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Carlson
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03663-00625)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John R. Wills | 48 | Head | Proprietor | Pennsylvania |
| 2 | Mary Wills | 42 | Wife | — | Pennsylvania |
| 3 | Jos. R. Jr. Wills | 21 | Son | Hand Or Packer | Pennsylvania |
| 4 | Chas. J. Wills | 20 | Son | New Worker | Pennsylvania |
| 5 | Doris M. Wills | 13 | Daughter | — | Pennsylvania |
| 6 | Ray A. Hammeton | 42 | Head | Meat Roller | Sweden |
| 7 | Tuna Hammeton | 37 | Wife | — | Sweden |
| 8 | John Wm. Hammeton | 12 | Son | — | Pennsylvania |
| 9 | Melvin Ray Hammeton | 6 | Son | — | Pennsylvania |
| 10 | Chas. J. Wright | 44 | Head | Fireman | Pennsylvania |
| 11 | Mildred M. Wright | 39 | Wife | — | Pennsylvania |
| 12 | Chas. J. Jr. Wright | 17 | Son | — | Pennsylvania |
| 13 | Margaret L. Wright | 12 | Daughter | — | Pennsylvania |
| 14 | Jas. Thompson | 48 | Head | New Worker | England |
| 15 | Jas. W. Thompson | 16 | Son | — | Pennsylvania |
| 16 | Carl K. Krantz | 55 | Head | Iron Moulder | Sweden |
| 17 | Annie Krantz | 47 | Wife | — | Sweden |
| 18 | Emma Krantz | 26 | Daughter | Stenographer | Pennsylvania |
| 19 | Edith Krantz | 24 | Daughter | Stenographer | Pennsylvania |
| 20 | Milton Krantz | 20 | Son | Apprentice Machinist | Pennsylvania |
| 21 | Marie Hammarstrom | 73 | Mother-in-law | — | Sweden |
| 22 | Hildegarde Hammarstrom | 28 | Niece | Teacher | Pennsylvania |
| 23 | Jas. J. Christy | 75 | Head | Retired | Pennsylvania |
| 24 | Katherine Christy | 67 | Wife | — | Pennsylvania |
| 25 | J. H. Nelson | 45 | Head | Machinist | Pennsylvania |
| 26 | Josephine Nelson | 44 | Wife | — | Pennsylvania |
| 27 | Herbert Nelson | 21 | Son | Odd Jobs | Pennsylvania |
| 28 | Mildred Nelson | 20 | Daughter | Waitress | Pennsylvania |
| 29 | Robert Nelson | 15 | Son | Delivers Papers | Pennsylvania |
| 30 | Margaret Nelson | 12 | Daughter | — | Pennsylvania |
| 31 | Carl O. Johnson | 55 | Head | Pipe-Fitter | Sweden |
| 32 | Alma E. Johnson | 55 | Wife | — | Germany |
| 33 | Oscar R. Johnson | 25 | Son | Clerk | Pennsylvania |
| 34 | Dorothy Johnson | 22 | Daughter | Breaker Girl | Pennsylvania |
| 35 | Pauline K. Anderson | 55 | Sister-in-law | — | Germany |
| 36 | John Carlson | 67 | Head | Carpenter | Sweden |
| 37 | Mildred Carlson | 18 | Daughter | New Worker | Pennsylvania |
| 38 | Ruth Carlson | 25 | Daughter | Stenographer | Pennsylvania |
| 39 | Carl Carlson THIS PERSON | 23 | Son | Paper Hanger | Pennsylvania |
| 40 | Richard Carlson | 15 | Son | — | Pennsylvania |
Pedigree Summary
Carl + 3 siblings
Gen 1 · 3 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)