How many John Blackburn census records do you have?

We have 2857 US Census records for John Blackburn, from 1900 to 1950, across 49 states and DC.

What's in a John Blackburn census record?

You'll see John's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.

How do I use census records for family research?

Census records are a snapshot of a family every 10 years. You can follow John Blackburn's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.

Are John Blackburn census records free?

Yes. All John Blackburn census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.

Which census years and states cover John Blackburn?

We have John Blackburn records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters to narrow your results.

How do I find John Blackburn in the census?

Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.

What is the Model Tree for John Blackburn?

The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.

Where does the census data come from?

All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.

John Blackburn — US Census Records & Model Tree

We found 2857 free census records for John Blackburn across 6 census years (1900–1950), in 49 states and DC and 837 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Blackburn Census Records by State & County

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Showing of 2857 records for John Blackburn US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Blackburn	32	Lee-County, Illinois	Illinois	Drum Winder	Head
1940	John Blackburn	25	Rockcastle-County, Kentucky	Kentucky	Coal Miner	Son
1940	John Blackburn	48	Pike-County, Kentucky	Kentucky	Farmer	Son
1940	John W. Blackburn	38	Fayette-County, Pennsylvania	Pennsylvania	Laborer	Son
1940	John F Blackburn	23	Jefferson-County, Ohio	Ohio	Spot Tester	Son
1940	John H. Blackburn	27	Marion-County, Indiana	Indiana	Pharm Clerk	Head
1930	John C Blackburn		Alameda, California	Louisiana	Porter	Head
1910	John C. Blackburn		Hamilton, Ohio	Virginia	Teacher	Head
1940	John W. Blackburn	78	Rogers-County, Oklahoma	Illinois	—	Head
1940	John Blackburn	59	Jackson-County, Arkansas	Arkansas	Farmer	Head
1930	John Blackburn		Ashe, North Carolina	North Carolina	Laborer	Son
1920	John Blackburn		Bryan, Oklahoma	Texas	Farm Labor	Son
1940	John Blackburn	54	Pike-County, Kentucky	Kentucky	Farmer	Head
1940	John Blackburn	15	Washington-County, Pennsylvania	Pennsylvania	—	Son
1940	John A Blackburn	34	Seminole-County, Oklahoma	Oklahoma	Farmer	Head
1920	John Blackburn		Greene, Indiana	Kentucky	Miner	Son
1940	John Blackburn	48	Washington-County, Pennsylvania	Pennsylvania	Cutter	Head
1930	John Blackburn		Pike, Kentucky	Kentucky	Miner	Head
1930	John W. Blackburn		Wilkes, North Carolina	North Carolina	Farmer	Head
1920	John W. Blackburn		Alameda, California	California	—	Son
1910	John F. Blackburn		Forsyth, North Carolina	North Carolina	Farmer	Head
1940	John Blackburn	20	Suffolk-County, Massachusetts	Massachusetts	—	Son
1930	John R. Blackburn		Suffolk, Massachusetts	Canada English	Loc. Engineer	Head
1940	John Jr Blackburn	18	Pike-County, Kentucky	Kentucky	Farmer	Son
1940	John Blackburn	13	Cuyahoga-County, Ohio	Illinois	—	Son
1910	John Blackburn		Fremont, Idaho	Wyoming	Farmer	Head
1930	John Blackburn		Westmoreland, Pennsylvania	Pennsylvania	Miner	Son
1930	John Blackburn		Davidson, Tennessee	Tennessee	—	Son
1940	John Blackburn	46	Logan-County, West Virginia	Ohio	Scrap Man	Head
1940	John H Blackburn	56	Harris-County, Texas	Texas	Machinist	Head

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About John Blackburn US Census Records & Model Tree

We've indexed 2857 free, proprietary US Census records for John Blackburn across 1900–1950, covering 49 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming.

Each record includes our Model Tree — a longitudinal reconstruction that links the same person across census decades using machine learning (XGBoost record linkage). Every link carries a confidence score: Verified (≥0.99), Confirmed (≥0.95), or Linked (lower confidence). This tells you not just what the census says, but how reliably we've connected records across time.

Every record also shows the full household — who John lived with, their ages, birthplaces, and occupations. For 1940 and 1950 records, you can view the original handwritten census page from the National Archives.

How we build the Model Tree. YourRoots independently indexes US Census records from NARA microfilm and links persons across decades using XGBoost-based record linkage. Each link's confidence is a per-pair match score from the model. Household corroboration (co-residents appearing on the same census pages in multiple years) strengthens the signal. The Model Tree is not a family tree submitted by users — it's reconstructed from the census data itself.

Last updated: July 30, 2026

Frequently Asked Questions

: We have 2857 US Census records for John Blackburn, from 1900 to 1950, across 49 states and DC.
: You'll see John's age, birthplace, occupation, and relationship to the head of household — plus everyone else who lived in the same home. For 1940 and 1950 records, you can also view the original handwritten census page.
: Census records are a snapshot of a family every 10 years. You can follow John Blackburn's household over time — see when children appear, when people move states, and who's living together. YourRoots connects census data with Tree Matching and AI tools so you can build out your tree faster.
: Yes. All John Blackburn census records on YourRoots are free to search and view — no subscription required. We built our own index from the original federal census images.
: We have John Blackburn records from the 1900 through 1950 US Federal Census, across 49 states and DC. Use the year and state filters above to narrow your results.
: Start by narrowing the year and state. If you know an approximate birth year, use the age column to match — census age minus the census year gives you a birth year estimate. Household members, birthplace, and occupation help confirm you have the right person.
: The Model Tree is YourRoots' unique feature that links a person across multiple census decades and reconstructs their likely family — parents, siblings, spouse, and children — based on household patterns. It turns isolated records into a connected family network.
: All records originate from the US Federal Census microfilm digitized by NARA (National Archives and Records Administration). YourRoots re-indexed the original page images using modern AI, catching names and details that older transcriptions missed.