How many James Harrington census records do you have?

We have 4713 US Census records for James Harrington, from 1900 to 1950, across 50 states and DC.

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

Yes. All James Harrington 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 Harrington?

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

How do I find James Harrington 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 Harrington?

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 Harrington — US Census Records & Model Tree

We found 4713 free census records for James Harrington across 6 census years (1900–1950), in 50 states and DC and 936 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

James Harrington Census Records by State & County

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Showing of 4713 records for James Harrington US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	James Harrington	33	Yavapai-County, Arizona	Arizona	Lineman	Head
1940	James J. Harrington	46	San-Francisco-County, California	California	Attorney At Law	Head
1920	James J. Harrington		Grafton, New Hampshire	New Hampshire	Salesman	Son
1930	James Harrington		Pike, Mississippi	Mississippi	—	Son
1940	James Harrington	26	Middlesex-County, New Jersey	New Jersey	Clerk	Daughter
1940	James F. Harrington	45	Middlesex-County, Massachusetts	Maine	Brakeman	Head
1900	James B Harrington	36	Macon, Missouri	Ohio	Farmer	Head
1900	James Harrington	31	Fayette, Pennsylvania	Pennsylvania	Day Laborer	Head
1940	James Harrington	32	Albany-County, New York	New York	Laborer	Head
1940	James E Harrington	47	Silver-Bow-County, Montana	Michigan	Metal Miner	Head
1940	James Harrington	84	Allegany-County, New York	Connecticut	—	Head
1930	James E Harrington		Grayson, Virginia	Virginia	Farmer	Head
1940	James Harrington	23	Scotland-County, North Carolina	North Carolina	Farm Helper	Son
1940	James Jr. Harrington	17	Hickman-County, Tennessee	Tennessee	Farming	Son
1910	James Harrington		Silver Bow, Montana	Ireland	Top-Roper	Head
1940	James J. Jr. Harrington	17	Berkshire-County, Massachusetts	Massachusetts	—	Son
1940	James J. Harrington	38	Berkshire-County, Massachusetts	Connecticut	Farm Laborer	Head
1940	James Harrington	17	Warren-County, North Carolina	North Carolina	Farmer	Son
1930	James L. Harrington		Madison, Arkansas	Arkansas	Manager	Head
1940	James Harrington	12	Forsyth-County, North Carolina	North Carolina	—	Son
1940	James Harrington	19	Winston-County, Mississippi	Mississippi	—	Son
1930	James J Harrington		Payne, Oklahoma	Oklahoma	None	Son
1940	James H. Harrington	46	Winston-County, Mississippi	Mississippi	Rural Mail Carrier	Head
1930	James Harrington		Marlboro, South Carolina	South Carolina	Farmer	Head
1930	James F Harrington		Windsor, Vermont	Vermont	Conductor	Head
1940	James E. Harrington	18	Windham-County, Connecticut	Massachusetts	Machine Operator	Son
1910	James M Harrington		Wake, North Carolina	North Carolina	Farmer	Son
1940	James Jr Harrington	23	Hamilton-County, Ohio	Kentucky	Common Labor	Son
1940	James H. Harrington	16	Washington-County, Tennessee	Tennessee	—	Son
1940	James Harrington	12	Hickman-County, Tennessee	Tennessee	—	Son

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About James Harrington US Census Records & Model Tree

We've indexed 4713 free, proprietary US Census records for James Harrington across 1900–1950, covering 50 states and DC: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, 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 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 4713 US Census records for James Harrington, from 1900 to 1950, across 50 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 Harrington'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 Harrington 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 Harrington records from the 1900 through 1950 US Federal Census, across 50 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.