HJ
Harold Jones — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Harold Jones across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Albert & Bert — first a son (b.~1904), then head of a 5-person household.
Age 36
b. ~1904
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Jones |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Probation officer |
| Industry | Dist. Court |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Probation Officer |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1904 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Bernice Jones | Daughter | — | 35 | ~1905 |
| Albert Jones | Head | — | 62 | ~1878 |
| Maude Hintman | Other | — | 64 | ~1876 |
| Harold Jones | Son | — | 36 | ~1904 |
| Grace Jones | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Polk, Iowa
Son, age 17
Polk, Iowa · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 27
Polk, Iowa · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jones |
| Given Name | Harold B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Salesman |
| Industry | Band Instrument |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 36
Polk-County, Iowa · implied b. ~1904 — 5 household members
| Surname | Jones |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Probation officer |
| Industry | Dist. Court |
| Class of Worker | GW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | C 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 Harold Jones across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Albert Jones (~0.92 confidence) and father Bert Jones (~0.92 confidence) and mother Grace Jones (~0.92 confidence) and mother Grace Jones (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Albert Jones
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Bert Jones
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Grace Jones
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Grace Jones
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Jones
Son · 1940 · age 36 · b. ~1904 · Iowa
★ You are viewing this record
Sibling
Bernice Jones
Sibling · 1940 · age 35
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
29 people indexed on this census page (nara:1940:m-t0627-01193-00035)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kenneth Taylor | 32 | Head | Locksmith | Iowa |
| 42 | Zelpha Taylor | 34 | Wife | — | Iowa |
| 43 | Jeanaine Taylor | 3 | Daughter | — | Iowa |
| 44 | Donna Taylor | 1 | Daughter | — | Iowa |
| 45 | Gary Taylor | 0 | Son | — | Iowa |
| 46 | Mary Marriott | 70 | Mother-in-law | — | Iowa |
| 47 | Homer Petray | 50 | Head | Messenger | Iowa |
| 48 | Ora Petray | 49 | Wife | — | Iowa |
| 49 | William Steinbach | 41 | Head | Division Clerk | Minnesota |
| 50 | Marie Steinbach | 44 | Wife | — | Iowa |
| 51 | James M Hall | 25 | Head | Laborer | Kansas |
| 52 | Lucille Hall | 25 | Wife | — | Iowa |
| 53 | Albert R Jones | 62 | Head | Dairy Prop. | Iowa |
| 54 | Grace Jones | 61 | Wife | — | Iowa |
| 55 | Harold Jones THIS PERSON | 36 | Son | Probation Officer | Iowa |
| 56 | Bernice G Jones | 35 | Daughter | — | Iowa |
| 57 | Maude Hintman | 64 | Sister-in-law | — | Iowa |
| 58 | Robert A Brown | 38 | Head | Hotel Prop. | Iowa |
| 59 | Anita Brown | 36 | Wife | — | Iowa |
| 60 | Phillip Brown | 11 | Son | — | Iowa |
| 61 | Robert Brown | 6 | Son | — | Iowa |
| 62 | Ernest Schmidt | 18 | Head | Maid | Denmark |
| 63 | Alice Bruce | 32 | Head | Maid | Iowa |
| 64 | Harry W Martin | 43 | Head | Truck Driver | Boone, Iowa |
| 65 | Alice W Martin | 37 | Wife | — | Iowa |
| 66 | Phyllis Martin | 14 | Daughter | — | Iowa |
| 67 | Robert Martin | 12 | Son | — | Iowa |
| 68 | Wanda Mae Martin | 11 | Daughter | — | Iowa |
| 69 | Chester Thompson | 60 | Head | Carpenter | Denmark |
Related Census Records
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)