How many John Coughlin census records do you have?

We have 3271 US Census records for John Coughlin, from 1900 to 1950, across 47 states and DC.

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

Yes. All John Coughlin 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 Coughlin?

We have John Coughlin records from the 1900 through 1950 US Federal Census, across 47 states and DC. Use the year and state filters to narrow your results.

How do I find John Coughlin 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 Coughlin?

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 Coughlin — US Census Records & Model Tree

We found 3271 free census records for John Coughlin across 6 census years (1900–1950), in 47 states and DC and 423 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Coughlin Census Records by State & County

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Showing of 3271 records for John Coughlin US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Coughlin	53	New-York-County, New York	Ireland	Carpenter	Head
1910	John H Coughlin		Oneida, New York	New York	Weaver	Head
1940	John J. Coughlin	63	Union-County, New Jersey	New Jersey	Policeman	Head
1940	John F. Coughlin	23	Middlesex-County, Massachusetts	Maine	Attendant	Son
1920	John Coughlin		Hudson, New Jersey	New Jersey	None	Son
1930	John Coughlin		New York, New York	Ireland	Laborer	Head
1910	John Coughlin		Kings, New York	New York	—	Son
1940	John Coughlin	61	Hampden-County, Massachusetts	Vermont	Accountant	Head
1930	John Coughlin		Suffolk, Massachusetts	Irish Free State	Plasterer	Head
1900	John Coughlin	35	Kings, New York	Ireland	—	Head
1920	John A Coughlin		Middlesex, Massachusetts	Massachusetts	Clerk	Son
1910	John Coughlin		Norfolk, Massachusetts	Ireland	Tanner	Head
1900	John Coughlin	41	Lackawanna, Pennsylvania	Pennsylvania	Day-Laborer	Head
1920	John Coughlin		Powell, Montana	Montana	—	Son
1910	John Coughlin		St Croix, Wisconsin	Illinois	Farmer	Head
1930	John Coughlin		Westchester, New York	New York	—	Son
1930	John Coughlin		Mclean, Illinois	Illinois	Pipe Fitter	Head
1930	John J. Coughlin		Suffolk, Massachusetts	Ireland	Fireman	Head
1940	John H Coughlin	20	Norfolk-County, Massachusetts	Massachusetts	Attendant	Son
1930	John E Jr Coughlin		Cook, Illinois	Missouri	Violin Maker	Head
1940	John Coughlin	51	Howard-County, Indiana	Indiana	Machinist	Head
1940	John F. Coughlin	22	Suffolk-County, Massachusetts	Massachusetts	Laborer	Son
1930	John Coughlin		New York, New York	Ireland	Finisher	Head
1910	John J Coughlin		San Francisco, California	California	Harness Maker	Head
1940	John A. Coughlin	15	Middlesex-County, Massachusetts	Massachusetts	—	Son
1940	John Coughlin	23	Winnebago-County, Wisconsin	Wisconsin	Laborer	Son
1930	John Coughlin		Cook, Illinois	Illinois	—	Son
1910	John C Coughlin		Worcester, Massachusetts	Massachusetts	Belt Maker	Son
1940	John J. Coughlin	11	Suffolk-County, Massachusetts	Massachusetts	—	Son
1930	John Coughlin		Hudson, New Jersey	New Jersey	Plumber	Son

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About John Coughlin US Census Records & Model Tree

We've indexed 3271 free, proprietary US Census records for John Coughlin across 1900–1950, covering 47 states and DC: Alabama, Arizona, 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 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 3271 US Census records for John Coughlin, from 1900 to 1950, across 47 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 Coughlin'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 Coughlin 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 Coughlin records from the 1900 through 1950 US Federal Census, across 47 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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