How many John Blake census records do you have?

We have 5199 US Census records for John Blake, from 1900 to 1950, across 50 states, DC, and 2 territories.

What's in a John Blake 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 Blake'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 Blake census records free?

Yes. All John Blake 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 Blake?

We have John Blake records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find John Blake 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 Blake?

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 Blake — US Census Records & Model Tree

We found 5199 free census records for John Blake across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 1059 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Blake Census Records by State & County

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Showing of 5199 records for John Blake US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John D. Blake	46	Cherokee-County, Iowa	Iowa	Farmer	Head
1940	John Blake	34	Baltimore-City-County, Maryland	Maryland	Porter	Head
1920	John Blake		Windham, Vermont	Vermont	Printer	Son
1930	John Jr. Blake		Nevada, Arkansas	Arkansas	—	Son
1920	John Blake		Chester, South Carolina	South Carolina	—	Son
1940	John M Blake	25	Kings-County, New York	New York	Clerk	Son
1940	John Blake	25	Warren-County, Missouri	Missouri	Miner	Head
1940	John Blake	32	Charleston-County, South Carolina	South Carolina	Laborer	Head
1930	John C Blake		Rockingham, New Hampshire	New Hampshire	Farmer	Head
1920	John Blake		Morgan, Tennessee	Tennessee	Farmer	Head
1920	John Blake		Rockland, New York	New York	Laborer	Head
1920	John W. Blake		Mclean, North Dakota	Washington	Farmer	Head
1940	John Blake	54	Bristol-County, Massachusetts	England	Laborer	Head
1910	John Blake		Accomack, Virginia	Virginia	Laborer	Head
1930	John Blake		New York, New York	New York	Clerk	Head
1940	John R. Blake	67	Texas-County, Oklahoma	Kansas	Auto Dealer	Head
1910	John Blake		Franklin, Massachusetts	New Hampshire	Farmer	Head
1900	John Blake	16	None, Maryland	Maryland	At School	Son
1930	John Blake		Charleston, South Carolina	South Carolina	Carpenter	Head
1930	John A. Blake		Columbia, Arkansas	Arkansas	Farmer	Head
1940	John R Blake	40	Garland-County, Arkansas	Arkansas	Farmer	Head
1930	John N. Jr. Blake		Columbia, Arkansas	Arkansas	Farmer	Son
1920	John D. W. Blake		Washington, Colorado	Missouri	—	Son
1920	John J Blake		Morrison, Minnesota	Minnesota	Laborer	Son
1910	John S. Blake		Crawford, Arkansas	Mississippi	Paper Hanger	Head
1940	John P. Blake	45	Delaware-County, Pennsylvania	Pennsylvania	Bank Clerk	Head
1930	John Blake		Baltimore, Maryland	Virginia	Mechanic	Head
1920	John P. Blake		Otter Tail, Minnesota	Minnesota	Farmer	Head
1910	John W Blake		Marshall, West Virginia	West Virginia	Farmer	Head
1910	John H. Blake		Cleburne, Alabama	Alabama	Farmer	Head

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About John Blake US Census Records & Model Tree

We've indexed 5199 free, proprietary US Census records for John Blake across 1900–1950, covering 50 states, DC, and 2 territories: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, Hawaii, 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, U.S. Virgin Islands, 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 5199 US Census records for John Blake, from 1900 to 1950, across 50 states, DC, and 2 territories.
: 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 Blake'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 Blake 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 Blake records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. 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.