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John Barker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Linn-County, Iowa
Our Model Tree links this John Barker across the 1930 and 1940 US Censuses in Linn-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 11
b. ~1929
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Linn-County, Iowa |
| Surname | Barker |
| Given Name | John Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Cedar Rapids |
| Est. Birth Year | ~1929 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Barker | Daughter | — | 21 | ~1919 |
| Mary Barker | Daughter | — | 8 | ~1932 |
| Patricia Barker | Daughter | — | 4 | ~1936 |
| Joseph Barker | Head | — | 48 | ~1892 |
| Robert Barker | Son | — | 15 | ~1925 |
| John Barker | Son | — | 11 | ~1929 |
| Joseph Barker | Son | — | 22 | ~1918 |
| Nellie Barker | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Linn, Iowa
Son, age 1
Linn, Iowa · implied b. ~1929 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barker |
| Given Name | John J |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Linn-County, Iowa
Son, age 11
Linn-County, Iowa · implied b. ~1929 — 8 household members
| Surname | Barker |
| Given Name | John Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Highest Grade | 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Barker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Barker
Son · 1940 · age 11 · b. ~1929 · Iowa
★ You are viewing this record
Sibling
Mary Barker
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Barker
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Barker
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Barker
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Barker
Sibling · 1940 · age 4
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 — Linn-County, Iowa
Open full size
1940 US Federal Census — Linn-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01176-00519)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rudolph Kubik | 58 | Head | Laborer | Czechoslovakia |
| 2 | Bessie Kubik | 51 | Wife | — | Czechoslovakia |
| 3 | Anton Slaby | 71 | Head | — | Czechoslovakia |
| 4 | Mary Slaby | 68 | Wife | — | Iowa |
| 5 | Ellas Shefer | 36 | Daughter | Saleswoman | Iowa |
| 6 | John Shefer | 9 | Son | — | Iowa |
| 7 | Alex Baird | 54 | Head | Cook | Iowa |
| 8 | Florence Baird | 54 | Wife | — | Iowa |
| 9 | Ray Baird | 19 | Son | Attendant | Iowa |
| 10 | B. L. Welsh | 26 | Head | Carpenter | Iowa |
| 11 | Katherine Welsh | 26 | Wife | — | Iowa |
| 12 | Julia Leaven | 59 | Mother-in-law | — | Iowa |
| 13 | Joseph Barker | 48 | Head | Brick Layer | Iowa |
| 14 | Nellie Barker | 45 | Wife | — | Iowa |
| 15 | Joseph Glenn Barker | 22 | Son | New Worker | Iowa |
| 16 | Mary Agnes Barker | 21 | Daughter | — | Iowa |
| 17 | Robert Leo Barker | 15 | Son | — | Iowa |
| 18 | John Joseph Barker THIS PERSON | 11 | Son | — | Iowa |
| 19 | Mary Ellen Barker | 8 | Daughter | — | Iowa |
| 20 | Patricia Barker | 4 | Daughter | — | Iowa |
| 21 | Anton Zemlicka | 47 | Head | Tailor | Czechoslovakia |
| 22 | Anna Zemlicka | 54 | Wife | — | Czechoslovakia |
| 23 | Martha Zemlicka | 21 | Daughter | Stenographer | Iowa |
| 24 | George Zemlicka | 19 | Son | Bank Clerk | Iowa |
| 25 | Joe G. Zarub | 66 | Head | — | Iowa |
| 26 | Frank Nemecek | 59 | Head | — | Iowa |
| 27 | Katherine Nemecek | 59 | Wife | — | Iowa |
| 28 | William Raftis | 51 | Head | Machinist | Greece |
| 29 | Beulah Raftis | 50 | Wife | — | Iowa |
| 30 | Anna Mae Raftis | 19 | Daughter | — | Iowa |
| 31 | Helen Raftis | 16 | Daughter | — | Iowa |
| 32 | Molly Vogel | 49 | Head | Seamstress | Germany |
| 33 | George Vogel | 17 | Son | New Worker | Wisconsin |
| 34 | Violet Vogel | 14 | Daughter | — | Wisconsin |
| 35 | William Vogel | 11 | Son | — | Wisconsin |
| 36 | James Vogel | 6 | Son | — | Iowa |
| 37 | G. W. Curl | 38 | Head | Upholsterer | Iowa |
| 38 | Florence Curl | 36 | Wife | — | Iowa |
| 39 | Dorothy Mae Curl | 18 | Daughter | — | Iowa |
| 40 | Walter H. Fuchs | 25 | Head | Laborer | Iowa |
Related Census Records
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)