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Joyce Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Winnebago-County, Illinois
Our Model Tree links this Joyce Johnson across the 1930 and 1940 US Censuses in Winnebago-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 5-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Winnebago-County, Illinois |
| Surname | Johnson |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford Twp |
| 1935 Residence (County) | Winnebago |
| Additional Details | |
| Highest Grade | 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rockford Twp |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joyce | Age | Birth yr |
|---|---|---|---|---|
| Joyce Johnson | Daughter | — | 11 | ~1929 |
| Fred Johnson | Head | — | 43 | ~1897 |
| Theodore Johnson | Son | — | 13 | ~1927 |
| Phyllis Johnson | Daughter | — | 16 | ~1924 |
| Pauline Johnson | Spouse | — | 33 | ~1907 |
Census Appearances
1930
Winnebago, Illinois
Daughter, age 1
Winnebago, Illinois · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Illinois |
| Can Read/Write | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Winnebago-County, Illinois
Daughter, age 11
Winnebago-County, Illinois · implied b. ~1929 — 5 household members
| Surname | Johnson |
| Given Name | Joyce |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Rockford Twp |
| 1935 Residence (County) | Winnebago |
| Highest Grade | 5 |
| 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 Joyce Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Joyce Johnson
Daughter · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Phyllis Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Johnson
Sibling · 1940 · age 13
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 — Winnebago-County, Illinois
Open full size
1940 US Federal Census — Winnebago-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00915-00187)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence Farb | 30 | Wife | — | Illinois |
| 2 | Marilyn Farb | 4 | Daughter | — | Illinois |
| 3 | Edwin Gustafson | 45 | Head | Machinist | Illinois |
| 4 | Sadie Gustafson | 34 | Wife | — | Illinois |
| 5 | Constance Gustafson | 13 | Daughter | — | Illinois |
| 6 | Helge Melin | 44 | Head | Header Operater | Sweden |
| 7 | Martha Melin | 38 | Wife | — | Sweden |
| 8 | Anne Marie Melin | 4 | Daughter | — | Illinois |
| 9 | John Henry Melin | 1 | Son | — | Illinois |
| 10 | Louise Peterson | 28 | Roomer | Laborer | Sweden |
| 11 | Matt Poppenhagen | 38 | Head | Carpenter | Illinois |
| 12 | Lenora Poppenhagen | 25 | Wife | — | Illinois |
| 13 | Margit Poppenhagen | 2 | Daughter | — | Illinois |
| 14 | Theodore Smith | 68 | Head | Farmer | Illinois |
| 15 | Florence Smith | 55 | Wife | — | Illinois |
| 16 | Carl Lundquist | 43 | Head | Shipping Clerk | Sweden |
| 17 | Theodore Gustafson | 68 | Head | Laborer | Sweden |
| 18 | William Mcfarlane | 35 | Head | Machinist | Wisconsin |
| 19 | Alta Mcfarlane | 33 | Wife | — | Wisconsin |
| 20 | Wallace Mcfarlane | 14 | Son | — | Illinois |
| 21 | Eileen Mcfarlane | 12 | Daughter | — | Illinois |
| 22 | Dorothy Mcfarlane | 7 | Daughter | — | Illinois |
| 23 | Annie Johnson | 54 | Head | Laborer | Sweden |
| 24 | Floyd Johnson | 34 | Son | Turret Lathe | Illinois |
| 25 | Harry Lundquist | 36 | Head | Machine Operator | Colorado |
| 26 | Isabel Lundquist | 25 | Wife | — | Iowa |
| 27 | Ann Lundquist | 5 | Daughter | — | Iowa |
| 28 | Harriet Lundquist | 3 | Daughter | — | Illinois |
| 29 | John Edward Lantz | 56 | Head | Landscaper | Sweden |
| 30 | Henna Lantz | 56 | Wife | — | Sweden |
| 31 | Fred Johnson | 43 | Head | Carpet Layer | Sweden |
| 32 | Pauline Johnson | 33 | Wife | — | Illinois |
| 33 | Phyllis Johnson | 16 | Daughter | — | Illinois |
| 34 | Theodore Johnson | 13 | Son | — | Illinois |
| 35 | Joyce Johnson THIS PERSON | 11 | Daughter | — | Illinois |
| 36 | William Wadman | 36 | Head | Roll Threader | Sweden |
| 37 | Nannie Wadman | 31 | Wife | — | Sweden |
| 38 | Walter Wadman | 4 | Son | — | Illinois |
| 39 | Bert Alexander | 63 | Head | Machinist | Iowa |
| 40 | Sophrona Alexander | 64 | Wife | — | Wisconsin |
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)