How many John Mccann census records do you have?

We have 4788 US Census records for John Mccann, from 1900 to 1950, across 50 states and DC.

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

Yes. All John Mccann 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 Mccann?

We have John Mccann 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 Mccann 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 Mccann?

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 Mccann — US Census Records & Model Tree

We found 4788 free census records for John Mccann across 6 census years (1900–1950), in 50 states and DC and 717 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Mccann Census Records by State & County

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Showing of 4788 records for John Mccann US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Mccann	31	Providence-County, Rhode Island	Rhode Island	Plasterer	Son
1940	John Mccann	32	Bristol-County, Rhode Island	Rhode Island	Maintenance Man	Head
1930	John Mccann		New York, New York	Ireland	Laborer	Head
1940	John P. Mccann	58	Middlesex-County, Massachusetts	Vermont	Safety Manager	Head
1940	John Mccann	20	Nassau-County, New York	Scotland	—	Son
1910	John F. Mccann		Worcester, Massachusetts	Rhode Island	Laborer	Son
1930	John P. Mccann		Middlesex, Massachusetts	Scotland	Electrician	Son
1940	John E Mccann	23	Union-County, Iowa	Iowa	Laborer	Son
1930	John Mccann		Essex, New Jersey	Irish Free State	Stationary Eng	Head
1940	John Jr. Mccann	18	Philadelphia-County, Pennsylvania	New Jersey	Sailor	Son
1930	John Mccann		Cook, Illinois	Illinois	—	Son
1920	John Mccann		New York, New York	Ireland	Motorman	Head
1930	John Mccann		Wilkes, North Carolina	North Carolina	Laborer	Son
1940	John N Mccann	45	Bee-County, Texas	Arkansas	Farmer	Head
1940	John A Mccann	15	Bee-County, Texas	Texas	—	Son
1920	John E. Mccann		Fayette, Pennsylvania	Pennsylvania	Tipple	Son
1940	John Mccann	15	Suffolk-County, Massachusetts	Massachusetts	—	Son
1930	John Mccann		Cook, Illinois	Illinois	Helper	Son
1940	John J. Mccann	46	Providence-County, Rhode Island	Rhode Island	Manager	Head
1940	John R. Mccann	19	Franklin-County, New York	New York	Unpaid Family Helper	Son
1930	John P. Mccann		Union, Iowa	Iowa	—	Son
1910	John J Mccann		New York, New York	Ireland	Porter	Head
1920	John Mccann		Butler, Pennsylvania	Pennsylvania	—	Son
1940	John Mccann	10	Wayne-County, Michigan	Michigan	—	Son
1940	John Mccann	14	Harrison-County, Mississippi	Mississippi	—	Son
1940	John Mccann	18	Essex-County, Massachusetts	Massachusetts	Scourer	Son
1940	John Jr. Mccann	12	Bristol-County, Rhode Island	Rhode Island	—	Son
1940	John J. Mccann	47	Cook-County, Illinois	Scotland	Policeman	Head
1920	John P. Mccann		Merrimack, New Hampshire	New Hampshire	Machinist	Son
1920	John J. Mccann		Kings, New York	New York	Labor	Son

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About John Mccann US Census Records & Model Tree

We've indexed 4788 free, proprietary US Census records for John Mccann 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 4788 US Census records for John Mccann, 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 Mccann'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 Mccann 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 Mccann 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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