How many John Hagan census records do you have?

We have 3332 US Census records for John Hagan, from 1900 to 1950, across 49 states and DC.

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

Yes. All John Hagan 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 Hagan?

We have John Hagan 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 Hagan 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 Hagan?

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 Hagan — US Census Records & Model Tree

We found 3332 free census records for John Hagan across 6 census years (1900–1950), in 49 states and DC and 814 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Hagan Census Records by State & County

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Showing of 3332 records for John Hagan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	John J. Hagan		New York, New York	New York	Chauffeur	Son
1940	John H. Hagan	32	Middlesex-County, Massachusetts	Massachusetts	Laborer	Son
1920	John M Hagan		Hennepin, Minnesota	Oregon	—	Son
1930	John C Jr Hagan		Henrico, Virginia	Virginia	Investment Banker	Head
1920	John Hagan		Fulton, Georgia	Georgia	Mail Clerk	Head
1920	John M Hagan		Hennepin, Minnesota	Sweden	Painter	Head
1940	John Hagan	21	Suffolk-County, Massachusetts	Massachusetts	Store Clerk	Son
1930	John Hagan		Henderson, Kentucky	Kentucky	None	Daughter
1930	John Hagan		Essex, Massachusetts	Massachusetts	Laborer	Son
1900	John Hagan	6	Jefferson, Mississippi	Mississippi	—	Son
1930	John A Hagan		Stewart, Tennessee	Tennessee	Farming	Head
1900	John Hagan	48	Duval, Florida	Florida	Farmer	Head
1940	John J. Hagan	37	Providence-County, Rhode Island	Rhode Island	Carpenter	Head
1940	John Hagan	72	Candler-County, Georgia	Georgia	Farmer	Head
1940	John Hagan	23	Neosho-County, Kansas	Kansas	Farm Laborer	Son
1940	John T. Hagan	16	Daviess-County, Kentucky	Kentucky	Farmer	Son
1940	John C Hagan	13	Union-County, Kentucky	Kentucky	—	Son
1910	John H Hagan		Robeson, North Carolina	North Carolina	Farmer	Head
1940	John Hagan	14	Waseca-County, Minnesota	Minnesota	—	Son
1940	John Hagan	48	Kings-County, New York	Brooklyn	Stock Broker	Head
1940	John Hagan	52	St.-Louis-City-County, Missouri	Missouri	Bartender	Head
1930	John Hagan		St Louis, Missouri	Missouri	—	Son
1930	John J. Hagan		San Francisco, California	California	—	Son
1930	John D. Hagan		Lee, Kentucky	Kentucky	—	Son
1940	John H. Hagan	52	Mower-County, Minnesota	Iowa	Locomotive Engineer	Head
1910	John B Hagan		New Haven, Connecticut	New Hampshire	Type Setter	Son
1930	John Hagan		Juneau, Wisconsin	Wisconsin	—	Son
1940	John, Jr Hagan	23	St.-Louis-City-County, Missouri	Missouri	—	Son
1940	John Hagan	23	Kings-County, New York	Brooklyn	Clerk	Son
1940	John Hagan	43	Middlesex-County, Massachusetts	Massachusetts	Scrap Maker	Son

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About John Hagan US Census Records & Model Tree

We've indexed 3332 free, proprietary US Census records for John Hagan across 1900–1950, covering 49 states and DC: Alabama, 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 3332 US Census records for John Hagan, 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 Hagan'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 Hagan 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 Hagan 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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