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Mary Moon — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Warren-County, Iowa
Our Model Tree links this Mary Moon across the 1930 and 1940 US Censuses in Warren-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 5-person household.
Age 18
b. ~1922
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Iowa |
| Surname | Moon |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | East Lincoln Twp. |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | East Lincoln Twp |
| Est. Birth Year | ~1922 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Josie Moon | Spouse | — | 53 | ~1887 |
| Mary Moon | Daughter | — | 18 | ~1922 |
| Ralph Moon | Son | — | 21 | ~1919 |
| Arlin Moon | Head | — | 59 | ~1881 |
| Barbara Moon | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Warren, Iowa
Daughter, age 8
Warren, Iowa · implied b. ~1922 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Moon |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Warren-County, Iowa
Daughter, age 18
Warren-County, Iowa · implied b. ~1922 — 5 household members
| Surname | Moon |
| Given Name | Mary E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | East Lincoln Twp. |
| 1935 Residence (County) | Warren |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Mary Moon across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Moon
Daughter · 1940 · age 18 · b. ~1922 · Iowa
★ You are viewing this record
Sibling
Barbara Moon
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ralph Moon
Sibling · 1940 · age 21
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
1940 US Federal Census — Warren-County, Iowa
Open full size
1940 US Federal Census — Warren-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01210-00219)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Betty Lou Hudson | 15 | daughter | — | Iowa |
| 42 | Patricia Rae Hudson | 10 | daughter | — | Iowa |
| 43 | Charles S. Hudson | 72 | Head | Farming | Iowa |
| 44 | Victoria E. Hudson | 74 | wife | — | Iowa |
| 45 | Lee Bumgarner | 20 | hired hand | Laborer | Virginia |
| 46 | Arlin V. Moon | 59 | Head | Farming | Iowa |
| 47 | Josie Moon | 53 | wife | — | Iowa |
| 48 | Ralph F. Moon | 21 | son | — | Iowa |
| 49 | Mary E. Moon THIS PERSON | 18 | daughter | — | Iowa |
| 50 | Barbara B. Moon | 16 | daughter | — | Iowa |
| 51 | George B. Bales | 57 | Head | Farming | Iowa |
| 52 | Cora M. Bales | 54 | wife | — | Iowa |
| 53 | Ena Hammon | 77 | mother in law | — | Ohio |
| 54 | Leo Chumbley | 25 | hired hand | Laborer | Iowa |
| 55 | Albert Dance | 53 | Head | Farming | Illinois |
| 56 | Nellie M. Dance | 50 | wife | — | Iowa |
| 57 | Harry E. Peck | 56 | Head | Farming | Iowa |
| 58 | Edna E. Peck | 58 | wife | — | Iowa |
| 59 | Harold E. Stone | 36 | Head | Farming | Iowa |
| 60 | Emerit C. Stone | 34 | wife | — | Iowa |
| 61 | Richard May Stone | 9 | son | — | Iowa |
| 62 | George T. Peck | 72 | Head | Farming | Iowa |
| 63 | William Switzer | 58 | Head | Laborer | Iowa |
| 64 | Lora Switzer | 46 | wife | — | Iowa |
| 65 | Chancellor S. Wilson | 58 | Head | Farming | Illinois |
| 66 | Mamie F. Wilson | 60 | wife | — | Iowa |
| 67 | Arthur P. Downey | 57 | Head | Farming | Iowa |
| 68 | Eva E. Downey | 51 | wife | — | Iowa |
| 69 | Clinton C. Downey | 25 | son | Laborer | Iowa |
| 70 | Kenneth Downey | 20 | son | Laborer | Iowa |
| 71 | James S. Halterman | 31 | Head | Farming | Iowa |
| 72 | Dorothy R. Halterman | 19 | wife | — | Iowa |
| 73 | Joyce Ann Halterman | 0 | daughter | — | Iowa |
| 74 | Robert W. Heinge | 35 | Head | Farming | Iowa |
| 75 | Pauline M. Heinge | 21 | wife | — | Iowa |
| 76 | Elizabeth Heinge | 47 | mother | Operator | Indiana |
| 77 | Gale J. Bowlin | 37 | Head | Laborer | Iowa |
| 78 | Flossie P. Bowlin | 36 | wife | — | Missouri |
| 79 | Helen S. Bowlin | 17 | daughter | — | Iowa |
| 80 | Maxine M. Bowlin | 15 | daughter | — | Iowa |
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)