How many John Lyons census records do you have?

We have 10034 US Census records for John Lyons, from 1900 to 1950, across 50 states and DC.

What's in a John Lyons 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 Lyons'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 Lyons census records free?

Yes. All John Lyons 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 Lyons?

We have John Lyons 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 Lyons 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 Lyons?

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 Lyons — US Census Records & Model Tree

We found 10034 free census records for John Lyons across 6 census years (1900–1950), in 50 states and DC and 1332 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Lyons Census Records by State & County

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Showing of 10034 records for John Lyons US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	John Lyons		Passaic, New Jersey	New Jersey	—	Son
1910	John Lyons		Essex, New Jersey	New Jersey	None	Son
1940	John Lyons	35	Lake-County, Illinois	Illinois	Journeyman Plumber	Head
1940	John D. Lyons	33	Yakima-County, Washington	Washington	Warehouseman	Head
1930	John Lyons		Philadelphia, Pennsylvania	Pennsylvania	Clerk	Son
1930	John Lyons		Terrebonne, Louisiana	Louisiana	Fisherman	Head
1940	John A. Lyons	27	Cumberland-County, Maine	Maine	Assistant	Son
1940	John Lyons	23	Union-County, New Jersey	New Jersey	Bottler	Son
1940	John Lyons	29	Cook-County, Illinois	Illinois	Clerk	Son
1940	John J. Lyons	32	Marion-County, Indiana	Indiana	Tile Setter	Son
1920	John S Lyons		Napa, California	California	Laborer	Son
1910	John J. Lyons		Lake, Illinois	Illinois	—	Son
1920	John B Jr Lyons		Suffolk, Massachusetts	Massachusetts	Garage Mgr	Son
1930	John Lyons		New York, New York	Ireland	Laborer	Head
1940	John Lyons	62	Scioto-County, Ohio	Ohio	Pattern Maker	Head
1920	John Lyons		Philadelphia, Pennsylvania	Ireland	Laborer	Head
1920	John J Lyons		Clay, North Carolina	North Carolina	Farmer	Head
1940	John Lyons	60	Sumter-County, Alabama	Alabama	Farmer	Head
1920	John Lyons		Johnson, Kansas	Ohio	Salesman	Head
1940	John Lyons	39	Johnson-County, Kentucky	Kentucky	Farmer	Head
1940	John Lyons	70	Baltimore-City-County, Maryland	Maryland	Pilot	Head
1940	John Lyons	11	Essex-County, Massachusetts	Massachusetts	—	Son
1910	John H Lyons		San Francisco, California	California	—	Son
1930	John Lyons		New York, New York	New York	Operator	Son
1940	John F Lyons	44	Providence-County, Rhode Island	Rhode Island	Outside Salesman	Head
1940	John F Jr Lyons	13	Providence-County, Rhode Island	Rhode Island	—	Son
1930	John Lyons		Dubuque, Iowa	Iowa	—	Son
1940	John D Lyons	12	Boyd-County, Kentucky	Kentucky	—	Son
1910	John Lyons		Tuscarawas, Ohio	Ohio	Miner	Son
1940	John C Lyons	49	Harrison-County, Mississippi	Mississippi	Labor	Head

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About John Lyons US Census Records & Model Tree

We've indexed 10034 free, proprietary US Census records for John Lyons 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 10034 US Census records for John Lyons, 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 Lyons'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 Lyons 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 Lyons 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.

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