JP
James Pratt — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Calhoun-County, Iowa
Our Model Tree links this James Pratt across the 1910, 1920, 1930 and 1940 US Censuses in Calhoun-County, Iowa (XGBoost, ~Confirmed) — first a head (b.~1866), then head of a 5-person household.
Age 74
b. ~1866
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Calhoun-County, Iowa |
| Surname | Pratt |
| Given Name | James R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockwell City |
| 1935 Residence (County) | Calhoun |
| Additional Details | |
| Occupation | Superintendent |
| Industry | Public Water Works |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 1800 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Superintendent |
| Township / Ward | Rockwell City |
| Est. Birth Year | ~1866 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Veda Swanson | Daughter | — | 43 | ~1897 |
| Lillian Pratt | Spouse | — | 71 | ~1869 |
| Neva Pratt | Daughter | — | 45 | ~1895 |
| James Pratt | Head | — | 74 | ~1866 |
| Ward Swanson | Other | — | 21 | ~1919 |
Census Appearances
1910
Calhoun, Iowa
Head, age 44
Calhoun, Iowa · implied b. ~1866 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | James R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 23 |
| Father's Birthplace | New York |
| Mother's Birthplace | England |
| Occupation | Street Commissioner |
| Industry | City |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Calhoun, Iowa
Head, age 53
Calhoun, Iowa · implied b. ~1867 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | James R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | New York |
| Mother's Birthplace | England |
| Occupation | Engineer |
| Industry | Pumping Plant |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | P |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Calhoun, Iowa
Head, age 64
Calhoun, Iowa · implied b. ~1866 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pratt |
| Given Name | James R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | New York |
| Mother's Birthplace | England |
| Occupation | Inspector |
| Industry | City water works |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 5000 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Calhoun-County, Iowa
Head, age 74
Calhoun-County, Iowa · implied b. ~1866 — 5 household members
| Surname | Pratt |
| Given Name | James R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 74 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockwell City |
| 1935 Residence (County) | Calhoun |
| Occupation | Superintendent |
| Industry | Public Water Works |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 1800 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 James Pratt across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Pratt
Head · 1940 · age 74 · b. ~1866 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Calhoun-County, Iowa
Open full size
1940 US Federal Census — Calhoun-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01144-00135)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Katherine Hendricks | 23 | Wife | — | Iowa |
| 2 | Ted Hendricks | 3 | Son | — | Iowa |
| 3 | Rita Kay Hendricks | 1 | Daughter | — | Iowa |
| 4 | Albert Heppner | 47 | Head | Laborer | Iowa |
| 5 | Jessie Heppner | 43 | Wife | — | Texas |
| 6 | Kathryn Heppner | 20 | Daughter | — | Iowa |
| 7 | Harry C. Black | 36 | Head | Supervisor | Iowa |
| 8 | Eileen Black | 37 | Wife | — | Iowa |
| 9 | Betty Ann Black | 11 | Daughter | — | Iowa |
| 10 | Homer Black | 10 | Son | — | Iowa |
| 11 | James Black | 7 | Son | — | Iowa |
| 12 | Beverly Sue Black | 1 | Daughter | — | Iowa |
| 13 | Edgar Vaughn | 69 | Head | Insurance Agent | Iowa |
| 14 | Matilda Vaughn | 61 | Wife | — | Illinois |
| 15 | Arza Rammel | 32 | Head | Operator | Iowa |
| 16 | Hazel Rammel | 29 | Wife | — | Illinois |
| 17 | Edwin Rammel | 9 | Son | — | Iowa |
| 18 | Edwin Rammel | 7 | Son | — | Iowa |
| 19 | Lois Rammel | 4 | Daughter | — | Iowa |
| 20 | Wilbur Samuelson | 32 | Head | Proprietor | Kansas |
| 21 | Leona Samuelson | 30 | Wife | — | Nebraska |
| 22 | Carl Lash | 33 | Head | Salesman | Iowa |
| 23 | Margaret Lash | 33 | Wife | — | Iowa |
| 24 | Michael Lash | 1 | Son | — | Iowa |
| 25 | Chris D. Jesperson | 47 | Head | Musician | Denmark |
| 26 | Robena Jesperson | 42 | Wife | Teacher | Iowa |
| 27 | Donald Jesperson | 17 | Son | — | Iowa |
| 28 | Richard Jesperson | 12 | Son | — | Iowa |
| 29 | Charles H. Leonard | 77 | Father-in-law | Janitor | Iowa |
| 30 | William H. Powers | 77 | Head | — | Iowa |
| 31 | Bessie Powers | 70 | Wife | — | Iowa |
| 32 | James R. Pratt THIS PERSON | 74 | Head | Superintendent | Illinois |
| 33 | Lillian Pratt | 71 | Wife | — | Illinois |
| 34 | Neva Pratt | 45 | Daughter | Bookkeeper | Iowa |
| 35 | Veda Swanson | 43 | Daughter | Saleslady | Iowa |
| 36 | Ward Swanson | 21 | Grandson | Salesman | Iowa |
| 37 | Earl Lydston | 67 | Head | — | Sweden |
| 38 | Minnie Gerber | 55 | Head | Housework | Iowa |
| 39 | Arthur W. Oscar | 58 | Head | — | Illinois |
| 40 | Maude Oscar | 55 | Wife | — | 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)