How many James Harmon census records do you have?

We have 4508 US Census records for James Harmon, from 1900 to 1950, across 49 states and DC.

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

Yes. All James Harmon 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 Harmon?

We have James Harmon 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 James Harmon 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 Harmon?

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 Harmon — US Census Records & Model Tree

We found 4508 free census records for James Harmon across 6 census years (1900–1950), in 49 states and DC and 1252 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

James Harmon Census Records by State & County

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Showing of 4508 records for James Harmon US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	James Harmon	18	Accomack-County, Virginia	Virginia	Laborer	Son
1940	James E. Harmon	32	Tompkins-County, New York	New York	Assembler	Son
1940	James Ira Harmon	28	Newberry-County, South Carolina	South Carolina	Battery Filler	Head
1920	James Harmon		Richland, South Carolina	South Carolina	—	Son
1940	James R. Harmon	64	Cook-County, Illinois	Virginia	Special Clerk	Head
1920	James Harmon		Sussex, Delaware	Delaware	Farmer	Head
1930	James P Harmon		Russell, Kentucky	Kentucky	Farmer	Head
1930	James Harmon		Fluvanna, Virginia	West Virginia	Farmer	Head
1940	James Harmon	12	Pepin-County, Wisconsin	Wisconsin	—	Son
1910	James E. Harmon		Watauga, North Carolina	North Carolina	Farmer	Head
1920	James A Harmon		Chambers, Alabama	Alabama	Farmer	Son
1940	James R. Harmon	18	Daviess-County, Kentucky	Kentucky	—	Son
1940	James Paul Harmon	20	Acadia-County, Louisiana	Louisiana	—	Son
1940	James Harmon	22	Woodford-County, Illinois	Illinois	Carpenter	Son
1920	James Harmon		Montgomery, Ohio	Virginia	Farmer	Head
1910	James M. Harmon		Boone, Indiana	Indiana	Farmer	Head
1940	James E. Harmon	10	Genesee-County, Michigan	Michigan	—	Son
1940	James Harmon	20	Attala-County, Mississippi	Mississippi	Farming	Son
1920	James Harmon		Howell, Missouri	Missouri	Laborer	Son
1940	James P Harmon	10	Putnam-County, Missouri	Missouri	—	Son
1940	James L. Harmon	15	Lexington-County, South Carolina	South Carolina	—	Son
1910	James Harmon		Blaine, Oklahoma	Tennessee	Farmer	Head
1940	James Harmon	15	Saluda-County, South Carolina	South Carolina	Farm Help	Son
1940	James Harmon	19	Wayne-County, Michigan	Michigan	Tailor	Son
1940	James Harmon	11	Northampton-County, Virginia	Virginia	—	Son
1940	James Harmon	41	Northampton-County, Virginia	Virginia	Laborer	Head
1940	James Ato Harmon	10	Randolph-County, Alabama	Alabama	—	Son
1920	James W. Harmon		Island, Washington	Washington	—	Son
1930	James A. Harmon		Russell, Virginia	Virginia	Farmer	Head
1940	James A. Harmon	23	Washington-County, Maryland	Maryland	Laborer	Son

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About James Harmon US Census Records & Model Tree

We've indexed 4508 free, proprietary US Census records for James Harmon 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 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 4508 US Census records for James Harmon, from 1900 to 1950, across 49 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 Harmon'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 Harmon 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 Harmon 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.