How many James Williams census records do you have?

We have 78491 US Census records for James Williams, from 1900 to 1950, across 50 states, DC, and 3 territories.

What's in a James Williams 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 Williams'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 Williams census records free?

Yes. All James Williams 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 Williams?

We have James Williams records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 3 territories. Use the year and state filters to narrow your results.

How do I find James Williams 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 Williams?

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 Williams — US Census Records & Model Tree

We found 78491 free census records for James Williams across 6 census years (1900–1950), in 50 states, DC, and 3 territories and 2785 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 78491 records for James Williams US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	James Williams		Sussex, Delaware	Delaware	Manager	Head
1940	James A. Williams	27	Giles-County, Virginia	Virginia	Laborer	Son
1920	James P Williams		San Augustine, Texas	Texas	Laborer	Son
1940	James Williams	29	Baltimore-City-County, Maryland	Maryland	Dishwasher	Son
1940	James Williams	34	Wayne-County, Michigan	Michigan	Warehouse Attendant	Head
1930	James Williams		Orleans, Louisiana	Louisiana	Laborer	Son
1920	James H. Williams		Harford, Maryland	Maryland	Dairyman	Son
1940	James R Williams	23	Cooper-County, Missouri	Missouri	Farmer	Son
1940	James Williams	23	Fayette-County, Tennessee	Tennessee	Laborer	Son
1940	James A. Williams	31	Jackson-County, Illinois	Illinois	Carpenter	Head
1930	James H Williams		Summit, Ohio	England	Manager	Head
1930	James Jr. Williams		Orleans, Louisiana	Louisiana	Presser	Son
1940	James W. Jr. Williams	25	Fayette-County, West Virginia	West Virginia	Teacher Science	Son
1940	James W. Williams	23	Wood-County, Texas	Texas	—	Son
1910	James Williams		Washington, Indiana	Indiana	Farmer	Head
1920	James E Williams		Somerset, Maine	Maine	Farmer	Head
1930	James Williams		New Castle, Delaware	Delaware	Proprietor	Head
1920	James Williams		St Johns, Florida	Florida	Laborer	Head
1920	James Williams		Leon, Florida	Florida	Farmer	Head
1910	James Williams		Allegheny, Pennsylvania	England	Engineer	Head
1940	James Williams	61	Wayne-County, Michigan	England	Inspector	Head
1940	James E Williams	56	Fulton-County, Georgia	Alabama	Conductor	Head
1940	James Williams	63	Alameda-County, California	Nevada	Iron Worker	Head
1940	James Williams	50	Maricopa-County, Arizona	New Mexico	Cement Finisher	Head
1930	James Williams		Fayette, Kentucky	Kentucky	Porter	Head
1940	James L. Williams	51	Jasper-County, Iowa	Nebraska	Laborer Assembly Room	Head
1920	James Williams		Lackawanna, Pennsylvania	Wales	—	Head
1930	James Williams		Athens, Ohio	Ohio	Miner	Head
1910	James Williams		Shelby, Tennessee	Tennessee	Laborer	Head
1920	James P. Williams		Lincoln, Mississippi	Mississippi	Farmer	Head

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About James Williams US Census Records & Model Tree

We've indexed 78491 free, proprietary US Census records for James Williams across 1900–1950, covering 50 states, DC, and 3 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, Puerto Rico, 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 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 78491 US Census records for James Williams, from 1900 to 1950, across 50 states, DC, and 3 territories.
: 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 Williams'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 Williams 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 Williams records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 3 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.