How many John Regan census records do you have?

We have 4833 US Census records for John Regan, from 1900 to 1950, across 50 states and DC.

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

Yes. All John Regan 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 Regan?

We have John Regan 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 Regan 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 Regan?

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 Regan — US Census Records & Model Tree

We found 4833 free census records for John Regan across 6 census years (1900–1950), in 50 states and DC and 536 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Regan Census Records by State & County

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Showing of 4833 records for John Regan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	John G Regan		Weld, Colorado	Colorado	Laborer	Son
1940	John Regan	28	Custer-County, Montana	Montana	Plumber	Son
1940	John Regan	44	Lyon-County, Nevada	Nevada	Mechanic Repairs Trucks	Son
1940	John Regan	51	Cook-County, Illinois	Ireland	Janitor	Head
1930	John J Regan		Atchison, Kansas	Kansas	Farmer	Head
1920	John Regan		Essex, Massachusetts	Ireland	—	Head
1920	John Regan		Worcester, Massachusetts	Ireland	Rubber	Head
1940	John Regan	60	Richmond-County, New York	Ireland	—	Head
1920	John Regan		New York, New York	Ireland	Inspector	Head
1930	John Regan		Lackawanna, Pennsylvania	Pennsylvania	Clerk	Head
1940	John Patrick Regan	20	Montgomery-County, Kansas	Kansas	Doorman	Son
1930	John Regan		Hudson, New Jersey	New Jersey	—	Son
1930	John Jr Regan		Kings, New York	NEW YORK	Messenger	Son
1940	John M. Regan	39	Cook-County, Illinois	Illinois	Clerk	Head
1940	John Regan	15	Lackawanna-County, Pennsylvania	Pennsylvania	—	Son
1940	John Jr. Regan	12	Cook-County, Illinois	Illinois	—	Son
1940	John J. Regan	44	Albany-County, New York	Vermont	Rigger	Head
1910	John Regan		Grafton, New Hampshire	New Hampshire	Brakeman	Son
1940	John Regan	25	Cook-County, Illinois	Illinois	Laborer	Son
1940	John F. Regan	13	Providence-County, Rhode Island	Rhode Island	—	Son
1930	John M Regan		Orange, North Carolina	North Carolina	—	Son
1940	John J. Regan	21	Rockingham-County, New Hampshire	New Hampshire	Clerk	Son
1940	John V Regan	22	Essex-County, Massachusetts	Massachusetts	Clerk	Son
1930	John Regan		Suffolk, Massachusetts	Massachusetts	Manager	Son
1920	John J Regan		Suffolk, Massachusetts	Massachusetts	—	Son
1940	John H. Regan	51	Dubuque-County, Iowa	Iowa	Farmer	Head
1940	John F. Regan	43	Middlesex-County, Massachusetts	Massachusetts	Laborer	Head
1940	John Regan	12	Lackawanna-County, Pennsylvania	Pennsylvania	—	Son
1940	John H. Regan	39	Middlesex-County, Massachusetts	Massachusetts	Chauffeur	Head
1920	John D. Regan		Essex, Massachusetts	Massachusetts	—	Son

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About John Regan US Census Records & Model Tree

We've indexed 4833 free, proprietary US Census records for John Regan 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 4833 US Census records for John Regan, 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 Regan'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 Regan 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 Regan 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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