HH
Harold Hill — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Harold Hill across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Jas & Joe — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Hill |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marquisville |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Wood-worker |
| Industry | Thresher Mfg |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Wood-Worker |
| Township / Ward | Marquisville |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Harold Hill | Son | — | 23 | ~1917 |
| Joe Hill | Head | — | 46 | ~1894 |
| Bonnie Hill | Spouse | — | 46 | ~1894 |
| Harry Hill | Son | — | 9 | ~1931 |
Census Appearances
1920
Polk, Iowa
Son, age 3
Polk, Iowa · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hill |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 13
Polk, Iowa · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hill |
| Given Name | Harold R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Polk-County, Iowa
Son, age 23
Polk-County, Iowa · implied b. ~1917 — 4 household members
| Surname | Hill |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Marquisville |
| 1935 Residence (County) | Polk |
| Occupation | Wood-worker |
| Industry | Thresher Mfg |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1100 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Harold Hill across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jas Hill (~0.92 confidence) and father Joe Hill (~0.92 confidence) and mother Bonnie Hill (~0.92 confidence) and mother Fannie Hill (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jas Hill
b. ~1895
Source father
● Household
· direct · ~0.92
Father
Joe Hill
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Bonnie Hill
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Fannie Hill
b. ~1895
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Hill
Son · 1940 · age 23 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Harry Hill
Sibling · 1940 · age 9
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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01192-00742)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Enrico Fiori | 52 | Head | Proprietor | Italy |
| 42 | Brigida Fiori | 57 | Wife | — | Italy |
| 43 | Franco Fiori | 25 | Son | Trimmer | Italy |
| 44 | Nella Fiori | 21 | Daughter | — | Iowa |
| 45 | Maurizio Fiori | 19 | Son | Laborer | Iowa |
| 46 | Roy N. Nichols | 76 | Head | Dairy Hand | Missouri |
| 47 | Lois Nichols | 73 | Wife | — | Iowa |
| 48 | Marvin Nichols | 4 | Son | — | Iowa |
| 49 | Roger Nichols | 2 | Son | — | Iowa |
| 50 | Joe Hill | 46 | Head | Truck Driver | Iowa |
| 51 | Bonnie Hill | 46 | Wife | — | Iowa |
| 52 | Harold Hill THIS PERSON | 23 | Son | Wood-Worker | Iowa |
| 53 | Harry Hill | 9 | Son | — | Iowa |
| 54 | Anna Rosene | 70 | Head | — | Sweden |
| 55 | William Cole | 54 | Head | Miner | England |
| 56 | Rose Cole | 53 | Wife | Laundry | England |
| 57 | William Murray | 55 | Head | Night Watchman | Iowa |
| 58 | Anna Murray | 49 | Wife | — | Yugoslavia |
| 59 | Darlene Murray | 14 | Daughter | — | Iowa |
| 60 | Melyn Murray | 11 | Daughter | — | Iowa |
| 61 | Frances Estermole | 31 | Stepdaughter | Long Distance Operator | Arkansas |
| 62 | Joseph Estermole | 29 | Stepson | Receiving Clerk | Iowa |
| 63 | Willis Mumford | 29 | Head | Knitter | Nebraska |
| 64 | Eunice Mumford | 28 | Wife | — | Iowa |
| 65 | Marilyn Mumford | 1 | Daughter | — | Iowa |
| 66 | John Wilkinson | 66 | Head | — | England |
| 67 | Catherine Wilkinson | 59 | Wife | — | England |
| 68 | Matthew Holmes | 72 | Head | — | England |
| 69 | Isaac H. Blood | 51 | Head | Laborer | Iowa |
| 70 | Nellie Blood | 49 | Wife | — | Iowa |
| 71 | Lesta Blood | 21 | Daughter | Factory Worker | Iowa |
| 72 | Edna Blood | 18 | Daughter | — | Minnesota |
| 73 | Grace Blood | 14 | Daughter | — | Iowa |
| 74 | Lorena Blood | 15 | Daughter | — | Iowa |
| 75 | William Holmes | 47 | Head | Custodian | Oklahoma |
| 76 | Mabel Holmes | 46 | Wife | — | Iowa |
| 77 | George Holmes | 24 | Son | Asst Custodian | Iowa |
| 78 | Arlene Holmes | 17 | Daughter | Housekeeper | Iowa |
| 79 | Bernard Sargent | 30 | Head | Carpenter | Iowa |
| 80 | Dorothy Sargent | 31 | Wife | — | Iowa |
Pedigree Summary
Harold + 1 sibling
Gen 1 · 4 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)