How many John Warren census records do you have?

We have 9120 US Census records for John Warren, from 1900 to 1950, across 50 states and DC.

What's in a John Warren census record?

You'll see John'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 John Warren'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 John Warren census records free?

Yes. All John Warren 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 John Warren?

We have John Warren 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 John Warren 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 John Warren?

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.

John Warren — US Census Records & Model Tree

We found 9120 free census records for John Warren across 6 census years (1900–1950), in 50 states and DC and 1699 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Warren Census Records by State & County

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Showing of 9120 records for John Warren US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John H. Warren	43	Rockingham-County, New Hampshire	New Hampshire	Farmer	Son
1940	John Warren	40	Kings-County, New York	New York	Laborer	Son
1940	John C. Warren	26	Suffolk-County, Massachusetts	Massachusetts	Teacher	Son
1940	John W. Warren	26	Bibb-County, Georgia	Georgia	Landscape	Son
1940	John W. Warren	25	Lamoille-County, Vermont	Vermont	Truck Driver	Head
1940	John E Warren	29	Kings-County, New York	New York	Dentist	Son
1940	John O Warren	23	King-County, Washington	Washington	Statistician	Son
1930	John Warren		Yazoo, Mississippi	Mississippi	—	Son
1940	John Warren	69	Stark-County, Ohio	Switzerland	—	Head
1940	John H. Warren	59	Blount-County, Alabama	Tennessee	Farmer	Head
1940	John L. Warren	76	Mesa-County, Colorado	Massachusetts	Farmer	Head
1920	John J. Warren		Broadwater, Montana	New York	Miner	Head
1920	John J. Warren		Rockingham, New Hampshire	New Hampshire	Farmer	Head
1940	John G Warren	72	District-Of-Columbia-County, District of Columbia	Virginia	—	Head
1920	John H Warren		Hudson, New Jersey	New York	Architect	Head
1940	John M. Warren	61	Clay-County, Missouri	Missouri	Carpenter	Head
1940	John Warren	12	Hancock-County, Georgia	Georgia	—	Son
1910	John Warren		Greene, North Carolina	North Carolina	Farmer	Head
1940	John Warren	20	Perry-County, Alabama	Alabama	Laborer	Son
1910	John H Warren		Marion, Alabama	Alabama	Farmer	Head
1930	John Warren		Blount, Alabama	Alabama	Laborer	Son
1900	John M. Warren	55	Washington, Virginia	Virginia	Farmer	Head
1930	John H Warren		Warren, Tennessee	Tennessee	Farm Laborer	Son
1920	John Warren		Becker, Minnesota	Minnesota	—	Son
1920	John Warren		Barbour, Alabama	Alabama	Laborer	Son
1920	John Warren		Sussex, Virginia	Virginia	None	Son
1940	John A. Warren	14	Harper-County, Kansas	Kansas	—	Son
1930	John Warren		Franklin, Illinois	Illinois	None	Son
1940	John L. Warren	38	Litchfield-County, Connecticut	Massachusetts	Pressman	Head
1930	John H Warren		Gaston, North Carolina	North Carolina	Farmer	Head

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About John Warren US Census Records & Model Tree

We've indexed 9120 free, proprietary US Census records for John Warren 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 John 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 9120 US Census records for John Warren, from 1900 to 1950, across 50 states and DC.
: You'll see John'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 John Warren'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 John Warren 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 John Warren 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.