JJ
James Johnston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Minnesota
Our Model Tree links this James Johnston across the 1930 and 1940 US Censuses in Polk-County, Minnesota (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: North Dakota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Minnesota |
| Surname | Johnston |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | East Grand Forks City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | New Worker |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
| Occupation | New Worker |
| Township / Ward | East Grand Forks City |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Nadine Johnston | Daughter | — | 5 | ~1935 |
| Joyce Johnston | Daughter | — | 17 | ~1923 |
| Blanche Johnston | Daughter | — | 16 | ~1924 |
| Carl Johnston | Head | — | 59 | ~1881 |
| Eugene Johnston | Son | — | 20 | ~1920 |
| James Johnston | Son | — | 15 | ~1925 |
| Jay Johnston | Son | — | 19 | ~1921 |
| Stanley Johnston | Son | — | 10 | ~1930 |
| Minnie Johnston | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Polk, Minnesota
Son, age 5
Polk, Minnesota · implied b. ~1925 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | North Dakota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Illinois |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
1940
Polk-County, Minnesota
Son, age 15
Polk-County, Minnesota · implied b. ~1925 — 9 household members
| Surname | Johnston |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | North Dakota |
| 1935 Residence (City) | East Grand Forks City |
| 1935 Residence (County) | Polk |
| Occupation | New Worker |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | North Dakota |
| Birth Country | United States |
| Birthplace (normalized) | north dakota |
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 Johnston across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Johnston
Son · 1940 · age 15 · b. ~1925 · Minnesota
★ You are viewing this record
Sibling
Nadine Johnston
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Stanley Johnston
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jay Johnston
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joyce Johnston
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Blanche Johnston
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Johnston
Sibling · 1940 · age 20
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 — Polk-County, Minnesota
Open full size
1940 US Federal Census — Polk-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01949-00371)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Delia Sampson | 66 | Aunt | — | Minnesota |
| 2 | Ernest H. Peterson | 49 | Head | Lumber Foreman | Minnesota |
| 3 | Selma Peterson | 46 | Wife | — | Minnesota |
| 4 | Richard Peterson | 15 | Son | New Worker | Minnesota |
| 5 | Virginia Peterson | 14 | Daughter | New Worker | Minnesota |
| 6 | George Machost | 39 | Head | Bulk Agent | North Dakota |
| 7 | Eleanor Machost | 35 | Wife | — | North Dakota |
| 8 | Robert G. Machost | 7 | Son | — | North Dakota |
| 9 | Marjorie Larson | 21 | Lodger | Beauty Operator | Minnesota |
| 10 | Charles D. Peterson | 67 | Head | Janitor | Sweden |
| 11 | Laura J. Peterson | 63 | Wife | — | Minnesota |
| 12 | Lucille Peterson | 29 | Daughter | — | North Dakota |
| 13 | Douglas Peterson | 25 | Son | Assistant Chemist | North Dakota |
| 14 | Rodger Peterson | 21 | Son | Sugar Weigher | Minnesota |
| 15 | Carl A. Johnston | 59 | Head | Carpenter | Minnesota |
| 16 | Minnie Johnston | 49 | Wife | Fur Finisher | Illinois |
| 17 | Eugene Johnston | 20 | Son | Chemist | North Dakota |
| 18 | Jay Cee Johnston | 19 | Son | Laborer | North Dakota |
| 19 | Joyce Johnston | 17 | Daughter | New Worker | North Dakota |
| 20 | Blanche Johnston | 16 | Daughter | Teacher Assistant | North Dakota |
| 21 | James Johnston THIS PERSON | 15 | Son | New Worker | North Dakota |
| 22 | Stanley Johnston | 10 | Son | — | North Dakota |
| 23 | Nadine Johnston | 5 | Daughter | — | Minnesota |
| 24 | Harold G. Nisbet | 31 | Head | Electrical Contractor | North Dakota |
| 25 | Olene Nisbet | 25 | Wife | — | Minnesota |
| 26 | John F. Nisbet | 4 | Son | — | North Dakota |
| 27 | Ronald A. Nisbet | 2 | Son | — | North Dakota |
| 28 | Hugh Nisbet | 37 | Head | Common Laborer | North Dakota |
| 29 | Bernice Nisbet | 25 | Wife | — | Minnesota |
| 30 | Olaf G. Steven | 28 | Head | Truck Driver | Minnesota |
| 31 | Margaret Steven | 25 | Wife | — | Minnesota |
| 32 | Lloyd L. Rockwood | 52 | Head | Credit Manager | Iowa |
| 33 | Christine Rockwood | 53 | Wife | — | Minnesota |
| 34 | Robert Rockwood | 23 | Son | Chemist | North Dakota |
| 35 | Bernard A. Spain | 34 | Head | Proprietor | North Dakota |
| 36 | Lucy A. Spain | 30 | Wife | Proprietor | North Dakota |
| 37 | Jeannine J. Spain | 10 | Daughter | — | North Dakota |
| 38 | Charles G. Spain | 6 | Son | — | North Dakota |
| 39 | Edward Riher | 43 | Head | Grain Buyer | Minnesota |
| 40 | Christina Riher | 44 | Wife | — | Minnesota |
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)