MA
Marie Anderson — 1920 US Census Record
Model Tree available1920 United States Federal Census · Boulder, Colorado
Our Model Tree links this Marie Anderson across the 1920, 1930 and 1940 US Censuses in Boulder, Colorado (XGBoost, ~Confirmed), with identified parents Olof & Charles — first a daughter (b.~1900), then head of a 3-person household.
Age 20
b. ~1900
Female
Daughter
Born: Colorado
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | Boulder, Colorado |
| Surname | Anderson |
| Given Name | Marie A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Precinct 2 |
| Est. Birth Year | ~1900 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Marie | Age | Birth yr |
|---|---|---|---|---|
| Marie Anderson | Daughter | — | 20 | ~1900 |
| Charles Anderson | Head | — | 51 | ~1869 |
| Johanna Anderson | Spouse | — | 42 | ~1878 |
Census Appearances
1920
Boulder, Colorado
Daughter, age 20
Boulder, Colorado · implied b. ~1900 — 3 household members
| Surname | Anderson |
| Given Name | Marie A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Daughter, age 31
Boulder, Colorado · implied b. ~1899 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Mabel |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Other, age 41
Boulder-County, Colorado · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Mabel |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Precinct 21, West Longmont |
| 1935 Residence (County) | Boulder |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Marie Anderson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Olof Anderson (~0.92 confidence) and father Charles Anderson (~0.92 confidence) and mother Johanna Anderson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Olof Anderson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Charles Anderson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Johanna Anderson
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Marie Anderson
Daughter · 1920 · age 20 · b. ~1900 · Colorado
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Boulder, Colorado
Open full size
1920 US Federal Census — Boulder, Colorado
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu155unit:0988)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marie Thomson | 51 | Head | — | Norway |
| 2 | Minnie M. Thomson | 22 | Daughter | — | Iowa |
| 3 | Arthur H. Thomson | 21 | Son | — | Iowa |
| 4 | Victor B. Thomson | 16 | Son | — | Iowa |
| 5 | Anna Thomson | 13 | Daughter | — | Iowa |
| 6 | William Van Wensel | 35 | Head | Farmer | Holland |
| 7 | Christina Van Wensel | 37 | Wife | — | Holland |
| 8 | Peter Van Wensel | 8 | Son | — | Oklahoma |
| 9 | Cornelius Van Wensel | 6 | Son | — | Oklahoma |
| 10 | William Van Wensel | 5 | Son | — | Wisconsin |
| 11 | Marie K. Van Wensel | 3 | Daughter | — | Colorado |
| 12 | Henry Van Wensel | 1 | Son | — | Colorado |
| 13 | August Nelson | 73 | Head | — | Sweden |
| 14 | Annie Nelson | 69 | Wife | — | Sweden |
| 15 | Ruby E. Nelson | 24 | Daughter | — | Colorado |
| 16 | Harry E. Nelson | 12 | Grandson | — | Colorado |
| 17 | Bessie A. Axelson | 4 | Granddaughter | — | Colorado |
| 18 | Louis J. Wiles | 42 | Head | Farmer | Kentucky |
| 19 | Mollie E. Wiles | 42 | Wife | — | Kentucky |
| 20 | Elsie L. Wiles | 15 | Son | — | Kentucky |
| 21 | Roy T. Wiles | 13 | Son | — | Kentucky |
| 22 | Naomi Wiles | 7 | Daughter | — | Colorado |
| 23 | Charles G. Anderson | 51 | Head | Farmer | Sweden |
| 24 | Johanna M. Anderson | 42 | Wife | — | Sweden |
| 25 | Marie A. Anderson THIS PERSON | 20 | Daughter | — | Colorado |
| 26 | Anton Hoppe | 50 | Head | Farmer | Illinois |
| 27 | May Hoppe | 42 | Wife | — | Iowa |
| 28 | Henry Gantz | 51 | Head | Farmer | Germany |
| 29 | Katie Gantz | 51 | Wife | — | Germany |
| 30 | Johnson H. Huff | 54 | Head | Farmer | Virginia |
| 31 | Gertrude M. Huff | 49 | Wife | — | Iowa |
| 32 | Anton Anderson | 51 | Head | Farmer | Denmark |
| 33 | Sophie Anderson | 47 | Wife | — | Denmark |
| 34 | Silas Anderson | 20 | Daughter | — | Colorado |
| 35 | Helen Anderson | 12 | Daughter | — | Colorado |
| 36 | Donald Anderson | 9 | Son | — | Colorado |
| 37 | George M. Gross | 56 | Head | Farmer | Kansas |
| 38 | Delia E. Gross | 52 | Wife | — | Illinois |
| 39 | Harold Gross | 16 | Son | — | Colorado |
| 40 | Raymond L. Gross | 7 | Son | — | Colorado |
| 41 | Richard L. Gross | 5 | Son | — | Colorado |
| 42 | Richard B. Dwin | 36 | Head | Farmer | Illinois |
| 43 | Pauline B. Dwin | 38 | Wife | — | Germany |
| 44 | Evala E. Dwin | 13 | Son | — | Nebraska |
| 45 | Stewart W. Dwin | 11 | Son | — | Nebraska |
| 46 | Ruth J. Dwin | 9 | Daughter | — | Nebraska |
| 47 | Francis W. Wualey | 32 | Head | Farm Hand | Kentucky |
| 48 | Velma L. Wualey | 29 | Wife | — | Kentucky |
| 49 | Gladys B. Wualey | 7 | Daughter | — | Colorado |
| 50 | Vera M. Wualey | 5 | Daughter | — | Colorado |
Pedigree Summary
Marie
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)