MC
Mary Carlson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Deer-Lodge-County, Montana
Our Model Tree links this Mary Carlson across the 1920, 1930 and 1940 US Censuses in Deer-Lodge-County, Montana (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 2-person household.
Age 72
b. ~1868
Female
Head
Born: Finland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Deer-Lodge-County, Montana |
| Surname | Carlson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Finland |
| 1935 Residence (City) | Anaconda City |
| 1935 Residence (County) | Deer Lodge |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
| Township / Ward | Anaconda City |
| Est. Birth Year | ~1868 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Carlson | Head | — | 72 | ~1868 |
| Esther Carlson | Daughter | — | 37 | ~1903 |
Census Appearances
1920
Deer Lodge, …
Head, age 51
Deer Lodge, Montana · implied b. ~1869 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Marie |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Widowed |
| Birthplace | Finland |
| Year of Immigration | 1900 |
| Naturalization Status | Alien |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1930
Deer Lodge, …
Head, age 62
Deer Lodge, Montana · implied b. ~1868 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carlson |
| Given Name | Mary S |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Widowed |
| Birthplace | Finland |
| Naturalization Status | Alien |
| Year of Immigration | 1900 |
| Age at First Marriage | 21 |
| Father's Birthplace | Finland |
| Mother's Birthplace | Finland |
| Can Read/Write | Yes |
| Mother Tongue | Finnish |
| Home Owned/Rented | R |
| Home Value / Rent | 12 |
| Veteran | No |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
1940
Deer-Lodge-County, Montana
Head, age 72
Deer-Lodge-County, Montana · implied b. ~1868 — 2 household members
| Surname | Carlson |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Finland |
| 1935 Residence (City) | Anaconda City |
| 1935 Residence (County) | Deer Lodge |
| Naturalization Status | Naturalized |
| Highest Grade | H 8 |
| 1935 Residence | Same place |
| Birth Country | Finland |
| Birthplace (normalized) | finland |
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 Carlson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Carlson
Head · 1940 · age 72 · b. ~1868 · Montana
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Deer-Lodge-County, Montana
Open full size
1940 US Federal Census — Deer-Lodge-County, Montana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02217-00671)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Stanley Vlahovich | 25 | Nephew | Miner | Missouri |
| 2 | Anton Ritterhammer | 36 | Head | General Labourer | Montana |
| 3 | Mary M. Ritterhammer | 31 | Wife | — | Montana |
| 4 | Mary R. Ritterhammer | 13 | Daughter | — | Montana |
| 5 | Delores R. Ritterhammer | 1 | Daughter | — | Montana |
| 6 | Margaret M. Cummings | 48 | Head | — | Ohio |
| 7 | Catherine A. Cummings | 19 | Daughter | Seamstress | Montana |
| 8 | Dorothy L. Cummings | 16 | Daughter | — | Montana |
| 9 | Elsie B. Cummings | 14 | Daughter | — | Montana |
| 10 | Emma Carlson | 65 | Head | — | Sweden |
| 11 | Carl G. Carlson | 38 | Son | Supervisor | Montana |
| 12 | John Carlson | 14 | Grandson | — | Montana |
| 13 | Martha Nordquist | 86 | Mother | — | Sweden |
| 14 | Leonard D. Cadieux | 23 | Head | Furnaceman | Montana |
| 15 | Rose L. Cadieux | 23 | Wife | — | North Dakota |
| 16 | Kenneth R. Cadieux | 1 | Son | — | Montana |
| 17 | Joseph G. Cadieux | 19 | Brother | General Labourer | Montana |
| 18 | Jean Marsall | 18 | Sister | Floor Worker | North Dakota |
| 19 | Joseph B. Cadieux | 64 | Head | General Labourer | Canada-French |
| 20 | James Mcmanus | 84 | Head | — | England |
| 21 | Mary Mcmanus | 48 | Daughter | Superintendent Of Public Schools | Montana |
| 22 | Charles A. Mcdaniel | 65 | Head | Millman | Wisconsin |
| 23 | Emma Mcdaniel | 50 | Wife | — | England |
| 24 | Andrew Horvath | 40 | Head | Office Clerk | Montana |
| 25 | Mildred Horvath | 36 | Wife | — | Oklahoma |
| 26 | Elizabeth A. Horvath | 8 | Daughter | — | Montana |
| 27 | John A. Horvath | 3 | Son | — | Montana |
| 28 | John Horvath | 75 | Father | — | Czechoslovakia |
| 29 | George Horvath | 32 | Brother | Moulder | Montana |
| 30 | Joseph J. Francisco | 35 | Head | Moulder | Montana |
| 31 | Rose M. Francisco | 28 | Wife | — | Montana |
| 32 | Joseph J. Jr. Francisco | 4 | Son | — | Montana |
| 33 | Mary Carlson THIS PERSON | 72 | Head | — | Finland |
| 34 | Esther M. Carlson | 37 | Daughter | — | Montana |
| 35 | William A. Nelson | 45 | Head | Store Clerk | Montana |
| 36 | Doris M. Nelson | 14 | Daughter | — | Montana |
| 37 | Richard B. Babcock | 67 | Head | General Labourer | Pennsylvania |
| 38 | Mary A. Babcock | 58 | Wife | — | Wisconsin |
| 39 | Anton Hatlestad | 57 | Head | Millman | Norway |
| 40 | Elida B. Hatlestad | 52 | Wife | — | Norway |
Related Census Records
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)