How many John Devine census records do you have?

We have 3267 US Census records for John Devine, from 1900 to 1950, across 49 states and DC.

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

Yes. All John Devine 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 Devine?

We have John Devine 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 Devine 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 Devine?

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 Devine — US Census Records & Model Tree

We found 3267 free census records for John Devine across 6 census years (1900–1950), in 49 states and DC and 568 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Devine Census Records by State & County

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Showing of 3267 records for John Devine US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1920	John T. Jr. Devine		New Castle, Delaware	Delaware	—	Son
1940	John Devine	55	Wabash-County, Indiana	Indiana	Farmer	Son
1940	John Devine	37	Suffolk-County, Massachusetts	Massachusetts	Clerk	Head
1940	John A Devine	35	Suffolk-County, Massachusetts	Massachusetts	—	Son
1940	John Devine	53	Queens-County, New York	Ireland	Salesman	Head
1920	John Devine		Crawford, Kansas	Maryland	Miner	Head
1940	John F. Devine	35	Philadelphia-County, Pennsylvania	Pennsylvania	Lieutennant	Head
1940	John Devine	66	Ramsey-County, Minnesota	Ireland	—	Head
1940	John Devine	19	Ramsey-County, Minnesota	Minnesota	Dry Cleaner	Son
1940	John Devine	51	Ramsey-County, Minnesota	Minnesota	Salesman	Head
1940	John P. Devine	42	Essex-County, Massachusetts	Canada-English	Steamfitter	Head
1930	John F. Devine		Essex, Massachusetts	Connecticut	Police Officer	Head
1940	John Devine	17	Whiteside-County, Illinois	Illinois	—	Son
1910	John Devine		Decatur, Indiana	Kentucky	Stone Mason	Head
1940	John A. Devine	21	Allen-County, Indiana	Indiana	Stock Clerk	Son
1930	John J Devine		Lackawanna, Pennsylvania	Pennsylvania	None	Son
1940	John Devine	11	Kossuth-County, Iowa	Iowa	—	Son
1940	John J. Devine	15	Hampden-County, Massachusetts	Massachusetts	—	Son
1940	John Devine	21	St.-Clair-County, Illinois	Missouri	Radio Service	Son
1930	John J Devine		Essex, Massachusetts	Maine	Clerk	Head
1940	John Devine	52	Suffolk-County, Massachusetts	Massachusetts	Lieutenant	Head
1940	John Jr. Devine	21	Philadelphia-County, Pennsylvania	Pennsylvania	Spot Welder	Son
1940	John Jr. Devine	21	Suffolk-County, Massachusetts	Massachusetts	Machinist Apprentice	Son
1940	John Devine	15	Cook-County, Illinois	Illinois	Errand Boy	Son
1930	John Devine		Baltimore, Maryland	Delaware	Chief Electrician	Head
1930	John Devine		New York, New York	New York	None	Son
1920	John Devine		Sheboygan, Wisconsin	Wisconsin	Farmer	Head
1930	John Devine		Kings, New York	New York	—	Son
1940	John Devine	25	Armstrong-County, Pennsylvania	Pennsylvania	Laborer	Son
1930	John Devine		Kings, New York	New York	—	Son

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About John Devine US Census Records & Model Tree

We've indexed 3267 free, proprietary US Census records for John Devine across 1900–1950, covering 49 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, 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 3267 US Census records for John Devine, 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 Devine'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 Devine 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 Devine 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.

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