How many John Cowan census records do you have?

We have 2849 US Census records for John Cowan, from 1900 to 1950, across 49 states and DC.

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

Yes. All John Cowan 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 Cowan?

We have John Cowan 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 Cowan 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 Cowan?

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 Cowan — US Census Records & Model Tree

We found 2849 free census records for John Cowan across 6 census years (1900–1950), in 49 states and DC and 866 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Cowan Census Records by State & County

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Showing of 2849 records for John Cowan US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	John R. Cowan		Monroe, New York	New York	None	Son
1940	John Cowan	75	Fayette-County, Pennsylvania	Pennsylvania	—	Head
1940	John H. Cowan	69	Lyon-County, Kansas	Kansas	Farmer	Head
1940	John Cowan	80	O'Brien-County, Iowa	Scotland	Janitor	Head
1940	John Cowan	17	San-Francisco-County, California	California	—	Son
1910	John Jr. Cowan		Gallatin, Montana	Montana	—	Son
1920	John Cowan		Elbert, Colorado	Kansas	Farmer	Son
1940	John H. Cowan	46	St.-Clair-County, Missouri	Missouri	Farmer	Head
1940	John Cowan	25	Los-Angeles-County, California	Colorado	Mill-Man	Son
1940	John Cowan	63	Buncombe-County, North Carolina	South Carolina	Minister	Head
1940	John Cowan	14	Davidson-County, Tennessee	Tennessee	—	Son
1940	John L. Cowan	15	Anderson-County, South Carolina	South Carolina	Same Place	Son
1940	John Jr. Cowan	30	Buncombe-County, North Carolina	North Carolina	White Washer	Son
1940	John Cowan	46	Wayne-County, Michigan	Ohio	Assistant Foreman	Head
1930	John L. Cowan		Monroe, New York	Scotland	Laborer	Son
1930	John M Cowan		Los Angeles, California	Scotland	Laborer	Head
1940	John Cowan	17	Polk-County, Missouri	Missouri	—	Son
1940	John S. Cowan	38	Martin-County, North Carolina	North Carolina	Salesman	Head
1940	John J Cowan	22	Atlantic-County, New Jersey	Pennsylvania	Salesman	Son
1920	John Cowan		Gallatin, Montana	Kentucky	Operator Farm	Head
1930	John A. Cowan		Lawrence, Pennsylvania	Pennsylvania	—	Son
1930	John Cowan		Lake, Indiana	Pennsylvania	Credit Manager	Head
1940	John J Cowan	49	Atlantic-County, New Jersey	Pennsylvania	Engineer Train	Head
1940	John S. Cowan	34	Harvey-County, Kansas	Kansas	Farmer	Head
1930	John Cowan		Johnson, Arkansas	Arkansas	Teamster	Son
1920	John Cowan		New York, New York	New York	Clerk	Son
1940	John D. Cowan	13	Los-Angeles-County, California	California	—	Son
1920	John T. Cowan		Cobb, Georgia	Georgia	Farm Laborer	Son
1940	John Cowan	25	Suffolk-County, New York	New York	Laborer	Head
1940	John Cowan	37	Bergen-County, New Jersey	New Jersey	Policeman	Head

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About John Cowan US Census Records & Model Tree

We've indexed 2849 free, proprietary US Census records for John Cowan 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 2849 US Census records for John Cowan, 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 Cowan'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 Cowan 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 Cowan 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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