JP
John Porter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this John Porter across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a head (b.~1890), then head of a 5-person household.
Age 50
b. ~1890
Male
Head
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Porter |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Occupation | Chief Inspector |
| Industry | Western Weighing Inspection Bureau |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2220 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Chief Inspector |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1890 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Virginia Porter | Daughter | — | 17 | ~1923 |
| Barbara Porter | Daughter | — | 15 | ~1925 |
| John Porter | Head | — | 50 | ~1890 |
| John Porter | Son | — | 19 | ~1921 |
| Florence Porter | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Salt Lake, …
Head, age 30
Salt Lake, Utah · implied b. ~1890 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Colorado |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Illinois |
| Occupation | Office clerk |
| Industry | Western Weighing Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Salt Lake, …
Head, age 40
Salt Lake, Utah · implied b. ~1890 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 25 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Iowa |
| Occupation | Refrigeration |
| Industry | Western Weighing Ass |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4500 |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Salt-Lake-County, Utah
Head, age 50
Salt-Lake-County, Utah · implied b. ~1890 — 5 household members
| Surname | Porter |
| Given Name | John D. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Occupation | Chief Inspector |
| Industry | Western Weighing Inspection Bureau |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2220 |
| Highest Grade | H 4 |
| 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 John Porter across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Porter
Head · 1940 · age 50 · b. ~1890 · Utah
★ 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 — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04226-00762)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Continued From Gehr | None | — | — | — |
| 2 | George H. Mitchell | 61 | Head | Accounting | Utah |
| 3 | Florence O. Mitchell | 59 | Wife | — | Utah |
| 4 | Marjorie Mitchell | 24 | Daughter | Saleslady | Utah |
| 5 | Elizabeth Irvine | 52 | Head | — | Scotland |
| 6 | Susan H. Irvine | 23 | Daughter | Record Clerk | Utah |
| 7 | Thelma M. Irvine | 20 | Daughter | — | Utah |
| 8 | Mildred Irvine | 16 | Daughter | — | Utah |
| 9 | George W. Irvine | 14 | Son | — | Utah |
| 10 | Phyllis L. Irvine | 11 | Daughter | — | Utah |
| 11 | James M. Irvine | 24 | Son | Sub-Station Operator | Utah |
| 12 | Leah P. Irvine | 20 | Wife | — | Utah |
| 13 | Elizabeth C. Irvine | 1 | Daughter | — | Utah |
| 14 | John D. Porter THIS PERSON | 50 | Head | Chief Inspector | Colorado |
| 15 | Florence H. Porter | 48 | Wife | — | Kansas |
| 16 | John D. Porter | 19 | Son | — | Utah |
| 17 | Virginia L. Porter | 17 | Daughter | — | Utah |
| 18 | Barbara Ann Porter | 15 | Daughter | — | Utah |
| 19 | Charles J. Chadwick | 45 | Head | Watch Maker | Kansas |
| 20 | Mary T. Chadwick | 51 | Wife | — | Utah |
| 21 | Daniel S. Judd | 52 | Head | Cashier | Utah |
| 22 | Hazel S. Judd | 48 | Wife | — | Utah |
| 23 | Edward C. Judd | 24 | Son | Salesman | Utah |
| 24 | Stoddard Judd | 18 | Son | — | Utah |
| 25 | Marilyn Judd | 15 | Daughter | — | Utah |
| 26 | Patricia Judd | 8 | Daughter | — | Utah |
| 27 | Here Ends Block 130 And Begins 129 | None | — | — | — |
| 28 | Ernest W. Carlquist | 55 | Head | Property Appraiser | Utah |
| 29 | Elizabeth Carlquist | 52 | Wife | — | Utah |
| 30 | Frank M. Garrison | 54 | Head | — | Utah |
| 31 | Joseph S. Jones | 35 | Head | Attorney | Idaho |
| 32 | Marjorie S. Jones | 34 | Wife | — | Utah |
| 33 | Allen S. Jones | 4 | Son | — | Utah |
| 34 | John R. Jones | 1 | Son | — | Utah |
| 35 | William S. Manca | 46 | Head | Railroad Conductor | Utah |
| 36 | Elizabeth A. Manca | 36 | Wife | — | Kansas |
| 37 | William S. Jr. Manca | 6 | Son | — | Utah |
| 38 | Charles A. Manca | 1 | Son | — | Utah |
| 39 | Samuel A. Whitney | 29 | Head | Radio Advertising Salesman | Utah |
| 40 | Adele Whitney | 24 | Wife | — | Utah |
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)