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BJ

Blanche Johnson — 1930 US Census Record

Linked across censuses

1930 United States Federal Census · District Of Columbia, District of Columbia

Our Model Tree links this Blanche Johnson across the 1920 and 1930 US Censuses in District Of Columbia, District of Columbia (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 8-person household.

Age 13 b. ~1917 Female Daughter Born: Maryland Single

1930 Census Record Details

Census Year	1930
Location	District Of Columbia, District of Columbia
Surname	Johnson
Given Name	Blanche
Relationship to Head	Daughter
Sex	F
Color / Race	Black
Age	13
Marital Status	Single
Birthplace	Maryland
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Additional Details
Can Read/Write	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland
Township / Ward	Washington City
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.

8 people recorded at the same address in the 1930 census.

Name	Relation to head	Relative to Blanche	Age	Birth yr
Marion Johnson	Daughter	—	10	~1920
Mabel Johnson	Daughter	—	16	~1914
Edward Johnson	Head	—	35	~1895
Alvin Johnson	Son	—	31	~1899
Ida Johnson	Spouse	—	34	~1896
Sama Johnson	Daughter	—	6	~1924
Edward Johnson	Son	—	9	~1921
Blanche Johnson	Daughter	—	13	~1917

Census Appearances

1920

None, District …

Other, age 4

None, District of Columbia · implied b. ~1916 — 7 household members

● Primary link · ~Confirmed · 2 sources

XGBoost Household

Surname	Johnson
Given Name	Blanche
Relationship to Head	niece
Sex	F
Color / Race	Black
Age	4
Marital Status	Single
Birthplace	Maryland
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Occupation	none
Can Read	No
Can Write	No
Speaks English	No
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

1930

District Of …

Daughter, age 13

District Of Columbia, District of Columbia · implied b. ~1917 — 8 household members

Surname	Johnson
Given Name	Blanche
Relationship to Head	Daughter
Sex	F
Color / Race	Black
Age	13
Marital Status	Single
Birthplace	Maryland
Father's Birthplace	Maryland
Mother's Birthplace	Maryland
Can Read/Write	Yes
Birth State	Maryland
Birth Country	United States
Birthplace (normalized)	maryland

Model Tree

Linked across censuses

Our Model Tree links Blanche Johnson across 2 US Census years (1920 and 1930) in 2 locations, using XGBoost record linkage.

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This person

Anchor record

Blanche Johnson

Daughter · 1930 · age 13 · b. ~1917 · District of Columbia

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Sibling

Mabel Johnson

Sibling · 1930 · age 16

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Edward Johnson

Sibling · 1930 · age 9

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Alvin Johnson

Sibling · 1930 · age 31

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Sama Johnson

Sibling · 1930 · age 6

Source co-child of head (derived)

● Co-child · derived · ~0.88

Sibling

Marion Johnson

Sibling · 1930 · age 10

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

1930 US Federal Census — District Of Columbia, District of Columbia Open full size

Page Contents

47 people indexed on this census page (ia:1930:15thcensus297unit:0011)

Line	Name	Age	Relation	Occupation	Birthplace
51	Willie Johnson	47	Head	Furnace Man	Virginia
52	Lucy Johnson	39	Wife	Cook	Virginia
53	Samuel Johnson	30	Son	Post Master	Virginia
54	Rebecca Ayres	50	H	—	Maryland
55	Carrie Ayres	24	Daughter	—	Dist. of Columbia
56	Mary Alexander	30	Roomer	Cook	United States
57	James Gates	52	Head	Waiter	Dist. of Columbia
58	Cora Gates	39	Wife	—	Dist. of Columbia
59	Hattie Graham	50	Sister-in-law	—	Dist. of Columbia
60	Daniel Viper	51	Head	Roofing	Maryland
61	Edward Johnson	35	Head	Garage Helper	Maryland
62	Ida Johnson	34	Wife	—	Maryland
63	Mabel Johnson	16	Daughter	—	Maryland
64	Blanche Johnson THIS PERSON	13	Daughter	—	Maryland
65	Marion Johnson	10	Daughter	—	Dist. of Columbia
66	Edward Jr. Johnson	9	Son	—	Dist. of Columbia
67	Sama Johnson	6	Daughter	—	Dist. of Columbia
68	Alvin Johnson	31	Son	Laborer	Maryland
69	Horace Gerrard	39	Head	Sexton	Maryland
70	Florence Gerrard	36	Wife	—	Dist. of Columbia
71	Oscar Wilson	50	Head	Laborer	Virginia
72	Eleanor Wilson	46	Wife	—	Dist. of Columbia
73	Bernice Wilson	7	Daughter	—	Dist. of Columbia
74	James Chapman	41	Head	—	US
75	Alice Chapman	29	Wife	—	US
76	Anna Thomas	65	Head	—	United States
77	Susie Thomas	40	Sister	—	Dist. of Columbia
78	Marie Suggs	29	Head	Laundress	Maryland
79	Emmett Woodson	25	Roomer	Chauffeur	Dist. of Columbia
80	Evelyn Woodson	23	Roomer	—	Dist. of Columbia
81	Carlton Cordner	9	Roomer	—	Dist. of Columbia
82	William Jones	16	Roomer	—	United States
83	Esther Woodson	12	Roomer	—	Dist. of Columbia
84	Robert Sample	50	Head	Laborer	Dist. of Columbia
85	Irene Sample	49	Wife	Maid	Dist. of Columbia
86	Robert Jr. Sample	27	Son	—	Dist. of Columbia
87	George Sample	20	Son	Pin Setter	Dist. of Columbia
88	Irene Sample	18	Daughter	—	Dist. of Columbia
89	Thomas Sample	13	Son	—	Dist. of Columbia
90	Charles Sample	11	Son	—	Dist. of Columbia
91	Louise Sample	10	Daughter	—	Dist. of Columbia
92	Doris Sample	5	Daughter	—	Dist. of Columbia
93	James W. Howard	63	Head	Laborer	Maryland
94	Mary E. Howard	45	Wife	Laundress	Virginia
95	James Jr. Howard	17	Son	—	Dist. of Columbia
96	Samantha Howard	12	Daughter	—	Dist. of Columbia
97	Charles Howard	11	Son	—	Dist. of Columbia

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About This Record & Model Tree

This record was independently indexed by YourRoots from the 1930 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)

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