How many Thomas Harris census records do you have?

We have 12178 US Census records for Thomas Harris, from 1900 to 1950, across 50 states, DC, and 1 territory.

What's in a Thomas Harris census record?

You'll see Thomas'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 Thomas Harris'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 Thomas Harris census records free?

Yes. All Thomas Harris 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 Thomas Harris?

We have Thomas Harris records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Thomas Harris 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 Thomas Harris?

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.

Thomas Harris — US Census Records & Model Tree

We found 12178 free census records for Thomas Harris across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1900 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Thomas Harris Census Records by State & County

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Showing of 12178 records for Thomas Harris US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	Thomas Harris		Juniata, Pennsylvania	Pennsylvania	Farmer	Head
1930	Thomas Harris		Phelps, Missouri	Missouri	Laborer	Son
1940	Thomas Harris	30	Cheatham-County, Tennessee	Tennessee	Farming	Head
1920	Thomas Jr Harris		Jefferson, Alabama	Alabama	Porter	Son
1940	Thomas D. Harris	25	Madison-County, Illinois	Illinois	Clerk	Son
1940	Thomas Harris	22	Leon-County, Florida	Alabama	Clerk	Son
1940	Thomas R. Harris	24	Allegheny-County, Pennsylvania	Pennsylvania	—	Son
1940	Thomas R. Harris	29	Essex-County, New Jersey	New Jersey	Laborer	Head
1940	Thomas W Harris	27	Cuyahoga-County, Ohio	Illinois	Teller	Head
1930	Thomas G Harris		Erie, New York	New York	Teacher	Daughter
1940	Thomas Harris	20	Franklin-County, Tennessee	Tennessee	Labour	Son
1900	Thomas Harris	31	Jackson, Missouri	Kentucky	Stone Mason	Head
1920	Thomas Jr. Harris		Warren, Mississippi	Mississippi	—	Son
1940	Thomas C. Harris	31	Tompkins-County, New York	New York	Barber	Head
1940	Thomas Harris	25	Chester-County, South Carolina	South Carolina	Laborer	Son
1930	Thomas Harris		Escambia, Florida	Florida	Fireman	Head
1920	Thomas Harris		Benton, Arkansas	Arkansas	Laborer	Son
1940	Thomas Harris	28	New-York-County, New York	New York	—	Head
1920	Thomas B Harris		Sangamon, Illinois	Illinois	Teamster	Son
1940	Thomas Harris	25	Schuylkill-County, Pennsylvania	Pennsylvania	Slate-Picker	Son
1930	Thomas Harris		Lee, Mississippi	Mississippi	Farmer	Head
1930	Thomas R. Harris		Luzerne, Pennsylvania	Pennsylvania	Retail Merchant	Head
1920	Thomas L Harris		Henrico, Virginia	Virginia	Farmer	Head
1910	Thomas Harris		Harris, Georgia	Georgia	Farmer	Head
1940	Thomas Harris	63	Livingston-County, Michigan	Michigan	Farming	Head
1900	Thomas Harris	36	Culpeper, Virginia	Virginia	Carpenter	Head
1940	Thomas Harris	59	Grand-Traverse-County, Michigan	England	Farmer	Head
1940	Thomas J. Harris	66	Hall-County, Georgia	Georgia	Farmer	Head
1940	Thomas Harris	52	Gogebic-County, Michigan	England	Janitor	Head
1940	Thomas Harris	41	Alexander-County, Illinois	Illinois	Farmer	Head

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About Thomas Harris US Census Records & Model Tree

We've indexed 12178 free, proprietary US Census records for Thomas Harris across 1900–1950, covering 50 states, DC, and 1 territory: 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, 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 Thomas 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 12178 US Census records for Thomas Harris, from 1900 to 1950, across 50 states, DC, and 1 territory.
: You'll see Thomas'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 Thomas Harris'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 Thomas Harris 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 Thomas Harris records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. 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.