How many John Simon census records do you have?

We have 4592 US Census records for John Simon, from 1900 to 1950, across 49 states and DC.

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

Yes. All John Simon 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 Simon?

We have John Simon 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 John Simon 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 Simon?

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 Simon — US Census Records & Model Tree

We found 4592 free census records for John Simon across 6 census years (1900–1950), in 49 states and DC and 880 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Simon Census Records by State & County

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Showing of 4592 records for John Simon US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	John Simon		Cuyahoga, Ohio	Hungary	Inspector	Son
1920	John Simon		Jo Daviess, Illinois	Illinois	Laborer	Son
1940	John Jr. Simon	23	Arapahoe-County, Colorado	Colorado	Gardener	Son
1940	John Simon	30	Linn-County, Oregon	Oregon	Carpenter Helper	Son
1920	John Simon		Cook, Illinois	Germany	Freight Handler	Head
1940	John Simon	55	Allegheny-County, Pennsylvania	Syria	Laborer	Head
1940	John Simon	55	Fayette-County, Pennsylvania	Hungary	Coal Loader	Head
1940	John Simon	45	Northampton-County, Pennsylvania	Austria	Brick Layer	Head
1940	John Simon	81	Wright-County, Iowa	Ohio	—	Head
1940	John Simon	58	St.-Clair-County, Illinois	Hungary	Labor	Head
1940	John Simon	65	Fulton-County, New York	Syria	—	Head
1940	John Simon	39	New-Castle-County, Delaware	Delaware	Clerk	Head
1940	John J. Simon	51	Tulare-County, California	Russia	Trucker	Head
1940	John J. Jr. Simon	18	Tulare-County, California	California	Laborer	Son
1910	John P Simon		Fond Du Lac, Wisconsin	Wisconsin	Farmer	Head
1940	John Simon	55	Bristol-County, Massachusetts	England	Caretaker	Head
1930	John Simon		Union, North Carolina	North Carolina	—	Son
1910	John W. Simon		Jackson, Louisiana	Louisiana	Farm Laborer	Son
1940	John Simon	13	Brown-County, Wisconsin	Wisconsin	—	Son
1910	John D. Simon		Jackson, Louisiana	Louisiana	Farmer	Head
1910	John Simon		Allegheny, Pennsylvania	Germany	Express	Head
1930	John J Simon		Fremont, Wyoming	Nebraska	—	Son
1920	John Simon		Darlington, South Carolina	South Carolina	Farm Labor	Son
1920	John M Simon		Sedgwick, Kansas	Indiana	Farmer	Head
1930	John Simon		Mahoning, Ohio	Ohio	—	Son
1930	John Simon		St Martin, Louisiana	Louisiana	Laborer	Son
1930	John J Simon		Rice, Minnesota	Minnesota	Farmer	Head
1910	John Simon		Beaufort, North Carolina	North Carolina	Sawyer	Head
1940	John Simon	25	Humboldt-County, Iowa	Iowa	Clerk	Son
1940	John H. Simon	11	Wheeler-County, Texas	Texas	—	Son

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About John Simon US Census Records & Model Tree

We've indexed 4592 free, proprietary US Census records for John Simon across 1900–1950, covering 49 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, 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 4592 US Census records for John Simon, from 1900 to 1950, across 49 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 Simon'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 Simon 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 Simon 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.