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Alice Knight — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Alice Knight across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Knight |
| Given Name | Alice M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Bloomfield Twp |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Bloomfield Twp |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Alice | Age | Birth yr |
|---|---|---|---|---|
| Daniel Knight | Son | — | 8 | ~1932 |
| Harold Knight | Son | — | 6 | ~1934 |
| Wm Knight | Son | — | 13 | ~1927 |
| Ursula Knight | Spouse | — | 35 | ~1905 |
| Jerry Knight | Son | — | 1 | ~1939 |
| Wm Knight | Head | — | 37 | ~1903 |
| Alice Knight | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Polk, Iowa
Daughter, age 6
Polk, Iowa · implied b. ~1924 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | Alice Ann |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Idaho |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Daughter, age 15
Polk-County, Iowa · implied b. ~1925 — 7 household members
| Surname | Knight |
| Given Name | Alice M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Bloomfield Twp |
| 1935 Residence (County) | Polk |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 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 Alice Knight across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Alice Knight
Daughter · 1940 · age 15 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Wm Knight
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Knight
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Knight
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Knight
Sibling · 1940 · age 8
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-t0627-01192-00215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Margaret D Cook | 24 | Wife | — | Iowa |
| 2 | Roy C Armel | 49 | Head | Baker | Iowa |
| 3 | Maude B Armel | 53 | Wife | — | Iowa |
| 4 | Fred A Armel | 17 | Son | — | Iowa |
| 5 | Mary M Hoke | 20 | Daughter | — | Iowa |
| 6 | Robert E Hoke | 3 | Grand Son | — | Iowa |
| 7 | Clyde W Shaw | 52 | Head | Painter | Iowa |
| 8 | Wm T Knight | 37 | Head | Binder | Alaska |
| 9 | Ursula Knight | 35 | Wife | — | Iowa |
| 10 | Alice M Knight THIS PERSON | 15 | Daughter | — | Iowa |
| 11 | Wm Jr Knight | 13 | Son | — | Iowa |
| 12 | Daniel L Knight | 8 | Son | — | Iowa |
| 13 | Harold E Knight | 6 | Son | — | Iowa |
| 14 | Jerry R Knight | 1 | Son | — | Iowa |
| 15 | Harold Borns | 24 | Head | Service Man | Iowa |
| 16 | Mary Borns | 22 | Wife | Factory Worker | Iowa |
| 17 | Harold Jr Borns | 3 | Son | — | Iowa |
| 18 | Earnest R Fisher | 42 | Head | Forman | Indiana |
| 19 | Bertha M Fisher | 43 | Wife | — | Illinois |
| 20 | Carl R Fisher | 20 | Son | Labor | Illinois |
| 21 | Lois M Fisher | 16 | Daughter | — | Iowa |
| 22 | Jackie L Fisher | 7 | Daughter | — | Iowa |
| 23 | Lester Harvey | 50 | Head | Blacksmith | Iowa |
| 24 | Millie F Harvey | 60 | Wife | — | Missouri |
| 25 | Fred Radcliff | 31 | Head | Roofer | Washington |
| 26 | Minnie Radcliff | 24 | Wife | — | Iowa |
| 27 | Harold E Whicker | 31 | Head | Bread Mixer | Iowa |
| 28 | Beulah M Whicker | 26 | Wife | — | Iowa |
| 29 | Barbara Whicker | 3 | Daughter | — | Iowa |
| 30 | Karl L Fisher | 26 | Head | Soldier | Iowa |
| 31 | Floy L Fisher | 23 | Wife | — | Iowa |
| 32 | K. Neal Fisher | 3 | Son | — | Iowa |
| 33 | Carl A Randall | 47 | Head | Labor | Iowa |
| 34 | Elizabeth Randall | 44 | Wife | — | Iowa |
| 35 | Warren F Randall | 21 | Son | Clerk | Iowa |
| 36 | Robert J Randall | 17 | Son | Office | Iowa |
| 37 | Lola L Randall | 13 | Daughter | — | Iowa |
| 38 | Edward Mclucas | 71 | Head | Retired Engineer | Iowa |
| 39 | Lou Mclucas | 68 | Wife | — | Iowa |
| 40 | John P Mclucas | 24 | Son | Clerical | 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)