FJ
Florence Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Florence Johnson across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Gustav — first a daughter (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Johnson |
| Given Name | Florence V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Servant |
| Industry | Domestic and Professional |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 180 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Servant |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1909 |
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 Florence | Age | Birth yr |
|---|---|---|---|---|
| Margaret Johnson | Daughter | — | 25 | ~1915 |
| Florence Johnson | Daughter | — | 31 | ~1909 |
| Marie Johnson | Head | — | 58 | ~1882 |
| Glen Johnson | Son | — | 18 | ~1922 |
| John Johnson | Son | — | 21 | ~1919 |
Census Appearances
1920
Polk, Iowa
Daughter, age 11
Polk, Iowa · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Florence |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Daughter, age 21
Polk, Iowa · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Florence |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Book Keeper |
| Industry | Flower Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 31
Polk-County, Iowa · implied b. ~1909 — 5 household members
| Surname | Johnson |
| Given Name | Florence V. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Servant |
| Industry | Domestic and Professional |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 180 |
| Highest Grade | Hs 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 Florence Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Johnson (~0.92 confidence) and father Gustav Johnson (~0.92 confidence) and mother Marie Johnson (~0.92 confidence) and mother Mari Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Johnson
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Gustav Johnson
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Marie Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Mari Johnson
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Florence Johnson
Daughter · 1940 · age 31 · b. ~1909 · Iowa
★ You are viewing this record
Sibling
John Johnson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Johnson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Glen Johnson
Sibling · 1940 · age 18
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, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01197-00387)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy R. Estes | 54 | Head | Laborer | Arkansas |
| 42 | Nellie Estes | 43 | Wife | — | Iowa |
| 43 | Edward F. Estes | 18 | Son | Salesman | Iowa |
| 44 | Carmelata D. Estes | 19 | Daughter in law | — | Iowa |
| 45 | Ray W. Ballard | 33 | Head | Owner Coal Yard | Iowa |
| 46 | Mabel H. Ballard | 28 | Wife | — | Iowa |
| 47 | Barbara R. Ballard | 8 | Daughter | — | Iowa |
| 48 | Virgil A. Willard | 58 | Head | Janitor | Iowa |
| 49 | Clovis G. Balduchi | 22 | Head | Plumbers Digger | Iowa |
| 50 | Ruby E. Balduchi | 26 | Wife | — | Iowa |
| 51 | Juanita J. Balduchi | 2 | Daughter | — | Iowa |
| 52 | Anton Vertina | 47 | Head | Cutter Operator | Minnesota |
| 53 | Lillie M. Vertina | 37 | Wife | Folder | Iowa |
| 54 | Gertrude T. Rowe | 19 | Step daughter | — | Iowa |
| 55 | Marie E. Johnson | 58 | Head | — | Sweden |
| 56 | Florence V. Johnson THIS PERSON | 31 | Daughter | Servant | Iowa |
| 57 | Margaret C. Johnson | 25 | Daughter | Red Cross Marker | Iowa |
| 58 | John E. Johnson | 21 | Son | Package Wrapper | Iowa |
| 59 | Glen W. Johnson | 18 | Son | — | Iowa |
| 60 | Eric E. Peterson | 62 | Head | — | Sweden |
| 61 | Ida M. Peterson | 56 | Wife | — | Minnesota |
| 62 | Raymond E. Lewis | 20 | Head | Trucker | Iowa |
| 63 | Nellie I. Lewis | 21 | Wife | — | Iowa |
| 64 | Gene R. Lewis | 2 | Son | — | Iowa |
| 65 | Margie I. Lewis | 1 | Daughter | — | Iowa |
| 66 | Theodore A. Olson | 60 | Head | Elevator Operator | Sweden |
| 67 | Alma M. Olson | 62 | Wife | — | Sweden |
| 68 | Marie E. Olson | 26 | Daughter | Comptometer Operator | Iowa |
| 69 | James E. Speck | 34 | Head | Butcher | Iowa |
| 70 | Ethel M. Speck | 32 | Wife | — | Iowa |
| 71 | Barbara J. Speck | 15 | Daughter | — | Iowa |
| 72 | Mary F. Speck | 11 | Daughter | — | Iowa |
| 73 | Claudine Speck | 3 | Daughter | — | Iowa |
| 74 | Frank J. Johnson | 59 | Head | Tailor | Sweden |
| 75 | Anna V. Johnson | 57 | Wife | — | Sweden |
| 76 | William N. Coe | 31 | Head | Inspector | Iowa |
| 77 | Marieta J. Coe | 29 | Wife | — | Iowa |
| 78 | Norma J. Coe | 9 | Daughter | — | Iowa |
| 79 | Wilma J. Coe | 7 | Daughter | — | Iowa |
Pedigree Summary
Florence + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)