How many John Mcguire census records do you have?

We have 8889 US Census records for John Mcguire, from 1900 to 1950, across 50 states and DC.

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

Yes. All John Mcguire 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 Mcguire?

We have John Mcguire 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 Mcguire 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 Mcguire?

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 Mcguire — US Census Records & Model Tree

We found 8889 free census records for John Mcguire across 6 census years (1900–1950), in 50 states and DC and 1213 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Mcguire Census Records by State & County

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Showing of 8889 records for John Mcguire US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	John Mcguire		Providence, Rhode Island	Rhode Island	Laborer	Head
1940	John Mcguire	23	Allegheny-County, Pennsylvania	Pennsylvania	Stacker	Son
1940	John Mcguire	24	Lackawanna-County, Pennsylvania	Pennsylvania	Gate Tender	Son
1940	John Mcguire	38	Cook-County, Illinois	Illinois	Plumber	Head
1940	John Mcguire	34	New-York-County, New York	New York	Clerk (Stock)	Head
1940	John Mcguire	39	Clinton-County, Iowa	Iowa	Farmer	Head
1930	John Mcguire		New York, New York	New York	Laborer	Son
1930	John Mcguire		Kings, New York	New York	Electrician	Son
1940	John H Jr Mcguire	31	Hennepin-County, Minnesota	Minnesota	Service Man	Head
1940	John Mcguire	39	Bronx-County, New York	New York	Salesman	Head
1930	John Mcguire		Luzerne, Pennsylvania	Pennsylvania	Truck Driver	Head
1940	John T. Mcguire	34	Franklin-County, Virginia	Virginia	Farmer	Head
1940	John P. Mcguire	26	Cuyahoga-County, Ohio	Ohio	Iron & Steel Worker	Head
1940	John O Mcguire	26	Roanoke-City-County, Virginia	Virginia	Driver	Head
1940	John W. Mcguire	35	Fulton-County, Georgia	Georgia	Mechanic	Son
1940	John Mcguire	44	Allegheny-County, Pennsylvania	Pennsylvania	Mechanic	Head
1930	John Mcguire		Allegheny, Pennsylvania	England	Laborer	Head
1940	John T. Mcguire	73	Richmond-City-County, Virginia	Virginia	—	Head
1940	John Mcguire	42	Marion-County, Indiana	Kentucky	Janitor	Head
1940	John Mcguire	55	Montgomery-County, Pennsylvania	Ireland	Operator	Head
1920	John Mcguire		Carter, Kentucky	Kentucky	Farmer	Head
1930	John Mcguire		Erie, New York	New York	Broker	Head
1940	John H. Mcguire	80	Walla-Walla-County, Washington	Iowa	—	Head
1940	John Mcguire	57	New-York-County, New York	Ireland	Laborer	Head
1940	John L. Mcguire	69	Daviess-County, Indiana	Indiana	Farmer	Head
1930	John M. Mcguire		Linn, Iowa	Nebraska	Contractor	Head
1930	John Mcguire		Queens, New York	Ireland	—	Head
1930	John J Mcguire		Baltimore, Maryland	Virginia	—	Head
1940	John Mcguire	16	Allegheny-County, Pennsylvania	Pennsylvania	—	Son
1940	John Mcguire	18	Fluvanna-County, Virginia	Virginia	Helper	Son

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About John Mcguire US Census Records & Model Tree

We've indexed 8889 free, proprietary US Census records for John Mcguire 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 8889 US Census records for John Mcguire, 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 Mcguire'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 Mcguire 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 Mcguire 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.

Other Mcguire US Census Records

James Mcguire Margaret Mcguire Mary Mcguire Thomas Mcguire William Mcguire

All Mcguire census records →

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