How many John Larkin census records do you have?

We have 5780 US Census records for John Larkin, from 1900 to 1950, across 49 states and DC.

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

Yes. All John Larkin 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 Larkin?

We have John Larkin 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 Larkin 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 Larkin?

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 Larkin — US Census Records & Model Tree

We found 5780 free census records for John Larkin across 6 census years (1900–1950), in 49 states and DC and 859 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Larkin Census Records by State & County

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Showing of 5780 records for John Larkin US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1910	John Larkin		Allegheny, Pennsylvania	Pennsylvania	—	Son
1930	John P. Larkin		Sedgwick, Kansas	Oklahoma	Chief Clerk	Head
1940	John A. Larkin	27	Bronx-County, New York	New York	Clerk	Son
1920	John E. Larkin		Middlesex, Massachusetts	Massachusetts	Apprentice	Son
1930	John Larkin		Baltimore, Maryland	Maryland	Clerk	Head
1940	John E. Jr. Larkin	36	Jefferson-County, Kentucky	Kentucky	Clerk	Son
1930	John Jr. Larkin		Cook, Illinois	Illinois	Salesman	Son
1930	John Larkin		Schuylkill, Pennsylvania	Pennsylvania	Laborer	Son
1940	John Larkin	39	Queens-County, New York	Austria	Automobile Salesman	Head
1940	John Larkin	35	Multnomah-County, Oregon	Washington	Clergyman	Head
1940	John Larkin	43	Kings-County, New York	Ireland	Foreman	Head
1930	John Larkin		New York, New York	Ireland	Laborer	Head
1920	John Larkin		Middlesex, Massachusetts	Ireland	Laborer	Head
1920	John Larkin		Middlesex, Massachusetts	Ireland	Operator	Head
1930	John C. Larkin		Madison, Nebraska	Vermont	Proprietor	Head
1940	John L. Larkin	78	Providence-County, Rhode Island	Rhode Island	—	Head
1930	John J Larkin		Allegheny, Pennsylvania	England	Mailer	Head
1930	John Larkin		New York, New York	New York	Photographer	Head
1910	John Larkin		Kings, New York	Ireland	Laborer	Head
1940	John Larkin	15	Wayne-County, New York	New York	—	Son
1940	John Larkin	11	Baltimore-County, Maryland	Maryland	—	Son
1930	John Larkin		Baltimore, Maryland	Maryland	—	Son
1930	John Larkin		Cook, Illinois	Illinois	Conductor	Son
1930	John Larkin		Onondaga, New York	New York	—	Son
1930	John Larkin		Hudson, New Jersey	New Jersey	—	Son
1940	John Jr Larkin	14	Cook-County, Illinois	Illinois	—	Son
1930	John Larkin		Luzerne, Pennsylvania	Pennsylvania	Student	Son
1910	John Larkin		New York, New York	Ireland	Longshoreman	Head
1940	John Larkin	19	New-York-County, New York	New York	Messenger Boy	Son
1940	John Larkin	32	Queens-County, New York	New York	Clerk	Son

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About John Larkin US Census Records & Model Tree

We've indexed 5780 free, proprietary US Census records for John Larkin 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 5780 US Census records for John Larkin, 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 Larkin'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 Larkin 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 Larkin 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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James Larkin Mary Larkin William Larkin

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