RJ
Rosa Johnson — 1900 US Census Record
Model Tree available1900 United States Federal Census · Polk, Iowa
Our Model Tree links this Rosa Johnson across the 1900, 1910 and 1920 US Censuses in Polk, Iowa (XGBoost, ~Confirmed), with identified parents August & August — first a daughter (b.~1899), then head of a 9-person household.
Age 1
b. ~1899
Female
Daughter
Born: Iowa
Single
1900 Census Record Details
| Census Year | 1900 |
| Location | Polk, Iowa |
| Surname | Johnson |
| Given Name | Rosa |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Sep |
| Birth Year | 1899 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Can Read | No |
| Can Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Lee Township |
| Est. Birth Year | ~1899 |
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 1900 census.
| Name | Relation to head | Relative to Rosa | Age | Birth yr |
|---|---|---|---|---|
| Myrtle Johnson | Daughter | — | 3 | ~1897 |
| Ruth Johnson | Daughter | — | 6 | ~1894 |
| Rosa Johnson | Daughter | — | 1 | ~1899 |
| Lily Johnson | Daughter | — | 8 | ~1892 |
| August Johnson | Head | — | 41 | ~1859 |
| Albin Johnson | Son | — | 12 | ~1888 |
| Paul Johnson | Son | — | 11 | ~1889 |
| Henry Johnson | Son | — | 13 | ~1887 |
| Amelia Johnson | Spouse | — | 40 | ~1860 |
Census Appearances
1900
Polk, Iowa
Daughter, age 1
Polk, Iowa · implied b. ~1899 — 9 household members
| Surname | Johnson |
| Given Name | Rosa |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Iowa |
| Birth Month | Sep |
| Birth Year | 1899 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | No |
| Can Write | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Polk, Iowa
Daughter, age 10
Polk, Iowa · implied b. ~1900 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Rose |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
Daughter, age 20
Polk, Iowa · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Rose |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Bookkeeper |
| Industry | Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Rosa Johnson across 3 US Census years (1900, 1910 and 1920) in Polk, Iowa, using XGBoost record linkage. Identified parents: father August Johnson (~0.92 confidence) and father August Johnson (~0.92 confidence) and father August Johnson (~0.92 confidence) and mother Amelia Johnson (~0.92 confidence) and mother Alma Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
August Johnson
b. ~1858
Source father
● Household
· direct · ~0.92
Father
August Johnson
b. ~1859
Source father
● Household
· direct · ~0.92
Father
August Johnson
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Amelia Johnson
b. ~1860
Source mother
● Household
· direct · ~0.92
Mother
Alma Johnson
b. ~1861
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Rosa Johnson
Daughter · 1900 · age 1 · b. ~1899 · Iowa
★ You are viewing this record
Sibling
Henry Johnson
Sibling · 1900 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lily Johnson
Sibling · 1900 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Albin Johnson
Sibling · 1900 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Myrtle Johnson
Sibling · 1900 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Johnson
Sibling · 1900 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Johnson
Sibling · 1900 · age 6
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
1900 US Federal Census — Polk, Iowa
Open full size
1900 US Federal Census — Polk, Iowa
Page Contents
50 people indexed on this census page (ia:1900:12thcensusofpopu454unit:0530)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ida P. Thrun | 21 | Boarder | Teacher | Wisconsin |
| 52 | August Nelson | 39 | Head | Tailor | Sweden |
| 53 | Christina Nelson | 63 | Mother | — | Sweden |
| 54 | Minnie Nelson | 16 | Sister | At School | Iowa |
| 55 | August Burkman | 42 | Head | Day Laborer | Sweden |
| 56 | Margaret Burkman | 34 | Wife | — | Sweden |
| 57 | Edith Burkman | 11 | Daughter | At School | Iowa |
| 58 | Esther Burkman | 9 | Daughter | At School | Iowa |
| 59 | Carl Burkman | 7 | Son | At School | Iowa |
| 60 | Charles Carlson | 39 | Head | City Fireman | Sweden |
| 61 | Enger Carlson | 39 | Wife | — | Norway |
| 62 | Alma Carlson | 7 | Daughter | At School | Iowa |
| 63 | Nellie Carlson | 5 | Daughter | At School | Iowa |
| 64 | Carl A. Carlson | 3 | Son | At School | Iowa |
| 65 | August Johnson | 40 | Head | Carpenter | Sweden |
| 66 | Amelia Johnson | 39 | Wife | — | Sweden |
| 67 | Henry Johnson | 12 | Son | At School | Iowa |
| 68 | Albin Johnson | 11 | Son | At School | Iowa |
| 69 | Paul Johnson | 10 | Son | At School | Iowa |
| 70 | Lily Johnson | 7 | Daughter | At School | Iowa |
| 71 | Ruth Johnson | 6 | Daughter | At School | Iowa |
| 72 | Myrtle Johnson | 2 | Daughter | — | Iowa |
| 73 | Rosa Johnson THIS PERSON | 1 | Daughter | — | Iowa |
| 74 | Charles Buschman | 40 | Head | Day Laborer | Sweden |
| 75 | Christina Buschman | 40 | Wife | — | Sweden |
| 76 | Minnie Buschman | 9 | Daughter | At School | Iowa |
| 77 | Carl Buschman | 7 | Son | At School | Iowa |
| 78 | Ruth Buschman | 3 | Daughter | — | Iowa |
| 79 | Carl V. Hanson | 52 | Head | Day Laborer | Sweden |
| 80 | Anna Hanson | 51 | Wife | — | Sweden |
| 81 | Andrew Anderson | 43 | Head | Laborer R.R. | Sweden |
| 82 | Sophia Anderson | 49 | Wife | — | Sweden |
| 83 | Gustav Anderson | 20 | Son | Apprentice Ironworker | Sweden |
| 84 | Jennie Anderson | 14 | Daughter | At School | Sweden |
| 85 | Swan Anderson | 9 | Son | At School | Iowa |
| 86 | Angie Anderson | 4 | Daughter | — | Iowa |
| 87 | John S. Donai | 34 | Head | Clerk R.R. | Iowa |
| 88 | Marie Donai | 27 | Wife | — | Iowa |
| 89 | Willard Donai | 3 | Son | — | Iowa |
| 90 | Ellen Michman | 39 | Head | Tailoress | Sweden |
| 91 | William Michman | 11 | Son | At School | Iowa |
| 92 | William Edgren | 40 | Head | Bill Poster | Sweden |
| 93 | Hulda Edgren | 34 | Wife | — | Sweden |
| 94 | Clarence Edgren | 9 | Son | At School | Iowa |
| 95 | Edna Edgren | 5 | Daughter | At School | Iowa |
| 96 | Mary E. Gravel | 30 | Head | Dressmaker | Iowa |
| 97 | Nellie Gravel | 5 | Daughter | — | Iowa |
| 98 | Justin Mudge | 59 | Father | — | Vermont |
| 99 | Rosanna Mudge | 63 | Mother | — | Illinois |
| 100 | John J. Freudenberg | 44 | Head | Provisions Dealer | Germany |
Related Census Records
Pedigree Summary
Rosa + 6 siblings
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1900 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)