HJ
Harry Jackson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Harry Jackson across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 14-person household.
Age 11
b. ~1929
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Jackson |
| Given Name | Harry L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1929 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Jessie Burggraaf | Daughter | — | 8 | ~1932 |
| Fern Jackson | Daughter | — | 13 | ~1927 |
| Ethel Burggraaf | Daughter | — | 10 | ~1930 |
| Harry Jackson | Son | — | 11 | ~1929 |
| Lester Jackson | Son | — | 15 | ~1925 |
| Libbie Keller | Spouse | — | 53 | ~1887 |
| Juanita Baker | Spouse | — | 17 | ~1923 |
| Hazel Burggraaf | Spouse | — | 43 | ~1897 |
| James Baker | Spouse | — | 20 | ~1920 |
| Jay Keller | Spouse | — | 67 | ~1873 |
| Neal Burggraaf | Spouse | — | 52 | ~1888 |
| Nellie Jackson | Spouse | — | 32 | ~1908 |
| Gilbert Jackson | Spouse | — | 57 | ~1883 |
| Eva Wilson | Spouse | — | 47 | ~1893 |
Census Appearances
1930
Polk, Iowa
Son, age 2
Polk, Iowa · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Missouri |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 11
Polk-County, Iowa · implied b. ~1929 — 14 household members
| Surname | Jackson |
| Given Name | Harry L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Income (1939) | 0 |
| Highest Grade | No 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 Harry Jackson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Harry Jackson
Son · 1940 · age 11 · b. ~1929 · Iowa
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Sibling
Jessie Burggraaf
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lester Jackson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Burggraaf
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Fern Jackson
Sibling · 1940 · age 13
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
37 people indexed on this census page (nara:1940:m-t0627-01196-00552)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eva M. Wilson | 47 | Wife | Housework | Iowa |
| 2 | Jay H. Keller | 67 | Husband | Housework | New York |
| 3 | Libbie Keller | 53 | Wife | Seamstress | Missouri |
| 4 | Gilbert Jackson | 57 | Husband | Laborer | Missouri |
| 5 | Nellie M. Jackson | 32 | Wife | — | Missouri |
| 6 | Lester J. Jackson | 15 | Son | — | Missouri |
| 7 | Fern E. Jackson | 13 | Daughter | — | Iowa |
| 8 | Harry L. Jackson THIS PERSON | 11 | Son | — | Iowa |
| 9 | Neal Burggraaf | 52 | Husband | Carpenter | Iowa |
| 10 | Hazel Burggraaf | 43 | Wife | — | Iowa |
| 11 | Ethel Marie Burggraaf | 10 | Daughter | — | Iowa |
| 12 | Jessie Louise Burggraaf | 8 | Daughter | — | Iowa |
| 13 | James W. Baker | 20 | Husband | New Worker | Iowa |
| 14 | Juanita M. Baker | 17 | Wife | — | Iowa |
| 15 | Francis M. Brown | 49 | Head | — | Iowa |
| 16 | Samuel Clyde Buyers | 40 | Head | Laborer | Iowa |
| 18 | Wm. Ralph Paris | 52 | Head | City Fireman | Iowa |
| 19 | Harlan W. Hase | 32 | Husband | Proprietor | Iowa |
| 20 | Agnes E. Hase | 25 | Wife | Photo Printer | Iowa |
| 21 | Judith K. Hase | 4 | Daughter | — | Iowa |
| 22 | Chas. W. Parrish | 77 | Husband | — | Iowa |
| 23 | Jennie Parrish | 66 | Wife | Waitress | Kansas |
| 25 | Clara E. Cummings | 68 | Head | — | Iowa |
| 26 | Naomi R. Keener | 26 | Daughter | Minister | Iowa |
| 27 | Maude De Cook | 56 | Head | — | Iowa |
| 28 | Edgar E. Griff | 64 | Husband | Dealer | Iowa |
| 29 | Cassie Griff | 61 | Wife | — | Iowa |
| 30 | C. Perry Griff | 37 | Husband | Bar Tender | Iowa |
| 31 | Irene S. Griff | 25 | Wife | Waitress | Kansas |
| 32 | Albert F. Lyon | 36 | Head | Machinist | Iowa |
| 33 | Alice Kelley | 69 | Head | — | Ohio |
| 34 | Lewis Napolitan | 71 | Husband | Watchman | Norway |
| 35 | Anna D. Napolitan | 49 | Wife | — | Iowa |
| 36 | Frances Helen Trustey | 30 | Daughter | Housework | Iowa |
| 37 | Mary M. Black | 29 | Head | Waitress | Iowa |
| 38 | Anna C. Albertson | 65 | Head | — | Missouri |
| 39 | Mabel Mogaty | 29 | Lodger | Waitress | Iowa |
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)