How many James Blake census records do you have?

We have 3621 US Census records for James Blake, from 1900 to 1950, across 48 states and DC.

What's in a James Blake census record?

You'll see James'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 James 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 James Blake census records free?

Yes. All James 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 James Blake?

We have James Blake records from the 1900 through 1950 US Federal Census, across 48 states and DC. Use the year and state filters to narrow your results.

How do I find James 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 James 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.

James Blake — US Census Records & Model Tree

We found 3621 free census records for James Blake across 6 census years (1900–1950), in 48 states and DC and 881 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

James Blake Census Records by State & County

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Showing of 3621 records for James Blake US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	James L. Blake	30	Washington-County, Colorado	Colorado	Farmer	Head
1940	James Blake	29	Union-County, New Jersey	New Jersey	Stenographer	Son
1940	James Blake	39	Linn-County, Missouri	Missouri	Telegraph Operator	Head
1920	James B. Blake		Muskegon, Michigan	Vermont	Mason	Head
1940	James E. Blake	42	Cecil-County, Maryland	Maryland	Buyer	Head
1940	James Blake	70	Union-County, New Jersey	New York	Inspector	Head
1940	James K. Blake	15	Jackson-County, West Virginia	West Virginia	—	Son
1910	James R. Blake		Fannin, Texas	South Carolina	Brick Mason	Head
1910	James Blake		Mccurtain, Oklahoma	Arkansas	Merchant	Head
1920	James Blake		Cambria, Pennsylvania	Scotland	Miner	Head
1940	James S. Blake	47	Millard-County, Utah	Utah	Janitor	Head
1900	James A Blake	3	York, South Carolina	South Carolina	—	Son
1900	James S Blake	74	Bristol, Massachusetts	Massachusetts	Druggist Proprietor	Head
1940	James E Blake	11	Monongalia-County, West Virginia	West Virginia	—	Son
1940	James P. W. Blake	18	Bergen-County, New Jersey	New Jersey	Office Boy	Son
1930	James A. Blake		Montgomery, North Carolina	North Carolina	Carpenter	Son
1930	James E. Blake		Braxton, West Virginia	West Virginia	—	Son
1900	James Blake	40	Spokane, Washington	Iowa	Farmer	Head
1940	James Blake	18	Taylor-County, Iowa	Iowa	Janitor	Son
1910	James S. Blake		Randolph, Alabama	Alabama	Farmer	Head
1940	James Blake	19	Wayne-County, Michigan	Michigan	—	Son
1940	James Blake	21	Fayette-County, West Virginia	West Virginia	Coal Loader	Son
1940	James Blake	40	Kent-County, Maryland	Maryland	Farm Laborer	Head
1930	James Blake		Greenville, South Carolina	South Carolina	—	Son
1940	James Blake	11	Cook-County, Illinois	Illinois	—	Son
1930	James M. Blake		Hyde, North Carolina	North Carolina	Farmer	Head
1940	James H. Blake	41	St.-Joseph-County, Indiana	West Virginia	Final Assembly	Head
1930	James Blake		Cumberland, North Carolina	North Carolina	—	Son
1940	James Blake	17	Middlesex-County, Massachusetts	Massachusetts	—	Son
1940	James Blake	18	Shawnee-County, Kansas	Kansas	Salesman	Son

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About James Blake US Census Records & Model Tree

We've indexed 3621 free, proprietary US Census records for James Blake across 1900–1950, covering 48 states and DC: Alabama, 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 James 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 3621 US Census records for James Blake, from 1900 to 1950, across 48 states and DC.
: You'll see James'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 James 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 James 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 James Blake records from the 1900 through 1950 US Federal Census, across 48 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.