MJ
Mary Jensen — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Dakota, Minnesota
Our Model Tree links this Mary Jensen across the 1920 and 1930 US Censuses in Dakota, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 10-person household.
Age 13
b. ~1917
Female
Daughter
Born: Minnesota
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Dakota, Minnesota |
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Norway |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Lakeville Village |
| Est. Birth Year | ~1917 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Jensen | Daughter | — | 13 | ~1917 |
| Dora Jensen | Daughter | — | 10 | ~1920 |
| Hans Jensen | Head | — | 48 | ~1882 |
| Lena Jensen | Other | — | 50 | ~1880 |
| Ola Jensen | Son | — | 12 | ~1918 |
| Leo Jensen | Son | — | 17 | ~1913 |
| Roy Jensen | Son | — | 18 | ~1912 |
| Carl Jensen | Son | — | 16 | ~1914 |
| Harold Jensen | Son | — | 17 | ~1913 |
| Hans Jensen | Son | — | 7 | ~1923 |
Census Appearances
1920
Dakota, Minnesota
Daughter, age 3
Dakota, Minnesota · implied b. ~1917 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Norway |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Dakota, Minnesota
Daughter, age 13
Dakota, Minnesota · implied b. ~1917 — 10 household members
| Surname | Jensen |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Norway |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Jensen across 2 US Census years (1920 and 1930) in Dakota, Minnesota, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Jensen
Daughter · 1930 · age 13 · b. ~1917 · Minnesota
★ You are viewing this record
Sibling
Ola Jensen
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roy Jensen
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dora Jensen
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Jensen
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hans Jensen
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carl Jensen
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Jensen
Sibling · 1930 · age 17
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
1930 US Federal Census — Dakota, Minnesota
Open full size
1930 US Federal Census — Dakota, Minnesota
Page Contents
50 people indexed on this census page (ia:1930:minnesotacensus00reel1085:0317)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Marie Waller | 67 | Wife H | None | Sweden |
| 52 | Neil Mcdonald | 25 | Head | Contractor | Minnesota |
| 53 | Marie Mcdonald | 22 | Wife H | None | Minnesota |
| 54 | Richard Mcdonald | 3 | Son | None | Minnesota |
| 55 | Joan Mcdonald | 2 | Daughter | None | Minnesota |
| 56 | Loretta Huberty | 21 | Roomer | Stenographer | Minnesota |
| 57 | Hans Jensen | 48 | Head | Contractor | Denmark |
| 58 | Lena Jensen | 50 | Wife H | None | Norway |
| 59 | Roy Jensen | 18 | Son | Truck Driver | Minnesota |
| 60 | Harold Jensen | 17 | Son | None | Minnesota |
| 61 | Leo Jensen | 17 | Son | Cement Work | Minnesota |
| 62 | Carl Jensen | 16 | Son | Laborer | Minnesota |
| 63 | Mary Jensen THIS PERSON | 13 | Daughter | None | Minnesota |
| 64 | Ola Jensen | 12 | Son | None | Minnesota |
| 65 | Dora Jensen | 10 | Daughter | None | Minnesota |
| 66 | Hans Jensen | 7 | Son | None | Minnesota |
| 67 | Henry Royce | 32 | Head | Laborer | Minnesota |
| 68 | Beulah Royce | 23 | Wife H | None | Minnesota |
| 69 | Edward Forsstrom | 49 | Roomer | Painter & Paper Hanger | Minnesota |
| 70 | Richard Mcintosh | 50 | Head | Coal Chute Oper. | Minnesota |
| 71 | Helga Mcintosh | 41 | Wife H | None | Minnesota |
| 72 | Henry B. Hammer | 29 | Lodger | Cattle Buyer | Minnesota |
| 73 | Albert Hammer | 27 | Lodger | Restaurant | Minnesota |
| 74 | Oren Dahl | 21 | Lodger | Attendant | No. Dakota |
| 75 | Math Birres | 54 | Head | Dealer | Minnesota |
| 76 | Susie Birres | 48 | Wife H | None | Minnesota |
| 77 | Ralph Birres | 23 | Son | Proprietor | Minnesota |
| 78 | Lucille Birres | 20 | Daughter | Proprietress | Minnesota |
| 79 | Martha Trimble | 51 | Lodger | Teacher | Illinois |
| 80 | Hans Larson | 51 | Head | Repair Man | Minnesota |
| 81 | Ellen Larson | 47 | Wife H | None | Minnesota |
| 82 | Howard Larson | 13 | Son | None | Minnesota |
| 83 | Lucy Harkins | 43 | Roomer | Clerk | Minnesota |
| 84 | Floyd Boynton | 39 | Head | Buttermaker | Minnesota |
| 85 | Bertha Boynton | 34 | Wife H | None | Minnesota |
| 86 | Margaret Boynton | 7 | Daughter | None | Minnesota |
| 87 | Virginia Boynton | 4 | Daughter | None | Minnesota |
| 88 | Lorraine Boynton | 2 | Daughter | None | Minnesota |
| 89 | Robert Boynton | 1 | Son | None | Minnesota |
| 90 | Louis O. Larson | 45 | Head | Attendant | Minnesota |
| 91 | Alma Larson | 37 | Wife H | None | Minnesota |
| 92 | Clifford Empey | 21 | Head | Helper | Minnesota |
| 93 | Blanche Empey | 20 | Wife H | None | Minnesota |
| 94 | Anna Sims | 54 | Head | None | Minnesota |
| 95 | Ambrose Sims | 25 | Son | Laborer | Minnesota |
| 96 | Gladys Sims | 23 | Daughter | Butter Wrapper | Minnesota |
| 97 | Lyle Sims | 20 | Son | Laborer | Minnesota |
| 98 | Howard Sims | 17 | Son | None | Minnesota |
| 99 | Grant Sims | 16 | Son | None | Minnesota |
| 100 | Grant Sims | 12 | Son | None | Minnesota |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)