How many John Dwyer census records do you have?

We have 4471 US Census records for John Dwyer, from 1900 to 1950, across 48 states and DC.

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

Yes. All John Dwyer 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 Dwyer?

We have John Dwyer records from the 1900 through 1950 US Federal Census, across 48 states and DC. Use the year and state filters to narrow your results.

How do I find John Dwyer 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 Dwyer?

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 Dwyer — US Census Records & Model Tree

We found 4471 free census records for John Dwyer across 6 census years (1900–1950), in 48 states and DC and 557 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Dwyer Census Records by State & County

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Showing of 4471 records for John Dwyer US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Dwyer	20	Providence-County, Rhode Island	Rhode Island	Bench Hand	Son
1940	John Dwyer	31	Montgomery-County, Ohio	Ohio	Salesman	Head
1940	John Dwyer	72	Union-County, New Jersey	New Jersey	Retired	Head
1920	John Dwyer		Saratoga, New York	Ireland	—	Head
1940	John Dwyer	48	Polk-County, Iowa	Iowa	Glass Cutter	Head
1930	John Dwyer		Kings, New York	Ireland	Doorman	Head
1940	John F Dwyer	69	Rutland-County, Vermont	Vermont	—	Head
1940	John J. Dwyer	13	Union-County, New Jersey	New Jersey	—	Son
1940	John A. Jr. Dwyer	13	Philadelphia-County, Pennsylvania	Pennsylvania	—	Son
1940	John Dwyer	12	New-York-County, New York	New York	—	Son
1940	John L. Dwyer	19	Berkshire-County, Massachusetts	Massachusetts	—	Son
1940	John E. Dwyer	50	St.-Charles-County, Missouri	Missouri	Farmer	Head
1920	John Dwyer		Luzerne, Pennsylvania	Pennsylvania	—	Son
1940	John Dwyer	16	Monroe-County, Wisconsin	Wisconsin	Student	Son
1940	John F. Dwyer	22	Franklin-County, Massachusetts	Massachusetts	Laborer	Son
1910	John W. Dwyer		Culpeper, Virginia	Virginia	—	Head
1940	John Dwyer	15	Providence-County, Rhode Island	Rhode Island	—	Son
1940	John Dwyer	23	Erie-County, New York	New York	Clerk	Son
1940	John J Dwyer	47	Kings-County, New York	Irish Free State	Ship Right	Head
1910	John Dwyer		Atlantic, New Jersey	Pennsylvania	Salesman	Head
1940	John Dwyer	19	La-Crosse-County, Wisconsin	Wisconsin	—	Son
1940	John Dwyer	16	Hampden-County, Massachusetts	Massachusetts	—	Son
1940	John J. Dwyer	45	Providence-County, Rhode Island	Rhode Island	—	Head
1930	John D. Dwyer		St Louis, Missouri	Missouri	None	Son
1910	John P. Dwyer		Philadelphia, Pennsylvania	Pennsylvania	Editor	Head
1940	John Dwyer	50	Kalamazoo-County, Michigan	Michigan	Commercial Artist	Head
1940	John V. Dwyer	20	Suffolk-County, Massachusetts	Massachusetts	Clerk	Son
1920	John Dwyer		Bristol, Massachusetts	Massachusetts	—	Son
1910	John Dwyer		Essex, New Jersey	Ireland	Policeman	Head
1940	John E. Dwyer	14	Erie-County, New York	New Hampshire	—	Son

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About John Dwyer US Census Records & Model Tree

We've indexed 4471 free, proprietary US Census records for John Dwyer across 1900–1950, covering 48 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, 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 4471 US Census records for John Dwyer, from 1900 to 1950, across 48 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 Dwyer'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 Dwyer 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 Dwyer records from the 1900 through 1950 US Federal Census, across 48 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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