MC
Mary Cole — 1940 US Census Record
Model Tree available1940 United States Federal Census · Boulder-County, Colorado
Our Model Tree links this Mary Cole across the 1920, 1930 and 1940 US Censuses in Boulder-County, Colorado (XGBoost, ~Confirmed), with identified parents Lawrence & Fannie — first a daughter (b.~1918), then head of a 3-person household.
Age 22
b. ~1918
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Boulder-County, Colorado |
| Surname | Cole |
| Given Name | Mary F |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Boulder City |
| 1935 Residence (County) | Boulder |
| Additional Details | |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Boulder City |
| Est. Birth Year | ~1918 |
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 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cole | Daughter | — | 22 | ~1918 |
| Lawrence Cole | Head | — | 69 | ~1871 |
| Fannie Cole | Spouse | — | 65 | ~1875 |
Census Appearances
1920
Boulder, Colorado
Daughter, age 1
Boulder, Colorado · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cole |
| Given Name | Mary Louise |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Missouri |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Boulder, Colorado
Daughter, age 13
Boulder, Colorado · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cole |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Missouri |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Boulder-County, Colorado
Daughter, age 22
Boulder-County, Colorado · implied b. ~1918 — 3 household members
| Surname | Cole |
| Given Name | Mary F |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Boulder City |
| 1935 Residence (County) | Boulder |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| 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 Mary Cole across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lawrence Cole (~0.92 confidence) and mother Fannie Cole (~0.92 confidence) and father Lawrence Cole (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lawrence Cole
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Fannie Cole
b. ~1875
Source mother
● Household
· direct · ~0.92
Father
Lawrence Cole
b. ~1876
Source father
● Household
· direct · ~0.92
This person
Anchor record
Mary Cole
Daughter · 1940 · age 22 · b. ~1918 · Colorado
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Boulder-County, Colorado
Open full size
1940 US Federal Census — Boulder-County, Colorado
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00457-00852)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Roberta B Valentine | 35 | wife | — | Colorado |
| 2 | Jane P Valentine | 9 | daughter | — | Colorado |
| 3 | Clifford N Stone | 50 | Head | Director Of Water Conservation | Colorado |
| 4 | Marjorie M Stone | 47 | wife | — | Colorado |
| 5 | Patricia J Stone | 16 | daughter | — | Colorado |
| 6 | Diana S Stone | 14 | daughter | — | Colorado |
| 7 | Margaret M Read | 48 | Head | Architectural Draftsman | Iowa |
| 8 | Arthur C Cross | 55 | Head | Writer | Michigan |
| 9 | Gertrude R Cross | 53 | wife | — | Iowa |
| 10 | Arthur S Cross | 13 | son | — | Colorado |
| 11 | Richard J Cross | 10 | son | — | Colorado |
| 12 | William J Dukes | 52 | Head | Agent | Indiana |
| 13 | Kathleen M Dukes | 52 | wife | — | Iowa |
| 14 | William J Jr Dukes | 22 | son | Mowing Lawns | Colorado |
| 15 | Philip S Dukes | 17 | son | Testing Milk | Colorado |
| 16 | Gretchen C Dukes | 15 | daughter | — | Colorado |
| 17 | Charles R Burger | 40 | Head | Agent | Colorado |
| 18 | Ruth K Burger | 38 | wife | — | Kansas |
| 19 | Barbara A Burger | 9 | daughter | — | Colorado |
| 20 | Donald W Burger | 6 | son | — | Colorado |
| 21 | Edwin Ed Brace | 65 | Head | — | Utah |
| 22 | Mollie J Brace | 65 | wife | — | Missouri |
| 23 | Lawrence W Cole | 69 | Head | — | Ohio |
| 24 | Fannie B Cole | 65 | wife | — | Missouri |
| 25 | Mary F Cole THIS PERSON | 22 | daughter | — | Colorado |
| 26 | Merritt Hutton | 53 | Head | Owner And Manager | Colorado |
| 27 | Kathryn C Hutton | 43 | wife | — | Pennsylvania |
| 28 | Patricia M Hutton | 21 | daughter | — | Pennsylvania |
| 29 | Madeline J Hutton | 20 | daughter | — | Pennsylvania |
| 30 | Kathryn M Hutton | 17 | daughter | — | Pennsylvania |
| 31 | Dorothy J Hutton | 15 | daughter | — | West Virginia |
| 32 | Thomas M Hutton | 11 | son | — | Pennsylvania |
| 33 | Suzanne S Hutton | 6 | daughter | — | Colorado |
| 34 | Clarence K Woodland | 63 | Head | Salesman | Iowa |
| 35 | Minnie G Woodland | 63 | wife | — | Iowa |
| 36 | Henry O Andrew | 65 | Head | Lawyer | Colorado |
| 37 | Lindley J Stiles | 26 | Head | Principal | New Mexico |
| 38 | Marguerite R Stiles | 28 | wife | — | Colorado |
| 39 | Judith M Stiles | 0 | daughter | — | Colorado |
| 40 | Lawrence I O'Kelley | 36 | Head | Instructor Of Psychology | Iowa |
Pedigree Summary
Mary
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 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)