How many John Dennis census records do you have?

We have 4818 US Census records for John Dennis, from 1900 to 1950, across 49 states and DC.

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

Yes. All John Dennis 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 Dennis?

We have John Dennis 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 Dennis 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 Dennis?

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 Dennis — US Census Records & Model Tree

We found 4818 free census records for John Dennis across 6 census years (1900–1950), in 49 states and DC and 1183 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Dennis Census Records by State & County

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Showing of 4818 records for John Dennis US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Dennis	40	Saginaw-County, Michigan	Michigan	Farmer	Head
1940	John Dennis	44	Custer-County, Nebraska	Nebraska	Farming	Head
1940	John E. Dennis	63	Hart-County, Kentucky	Kentucky	Farmer	Head
1940	John B Dennis	75	San-Diego-County, California	New Jersey	No No No Ot	Head
1940	John Dennis	85	Ionia-County, Michigan	Michigan	—	Head
1940	John Jr. Dennis	9	Fulton-County, Georgia	Georgia	—	Son
1940	John Dennis	18	Estill-County, Kentucky	Kentucky	—	Son
1910	John R. Dennis		Polk, Oregon	Oregon	Student	Son
1930	John Dennis		Lafayette, Arkansas	Arkansas	Farmer	Head
1940	John Dennis	15	Middlesex-County, Massachusetts	Massachusetts	—	Son
1930	John S. Dennis		Wicomico, Maryland	Maryland	Farmer	Head
1940	John Dennis	27	Pike-County, Georgia	Georgia	Hired Hand	Head
1940	John R. Dennis	45	Grady-County, Oklahoma	Oklahoma	Farmer	Head
1940	John Dennis	16	Wilkinson-County, Mississippi	Mississippi	Laborer	Son
1930	John Dennis		Suffolk, Massachusetts	Portugal	Fish Dealer	Head
1940	John A. Dennis	45	Webster-County, Louisiana	Georgia	Road Work	Head
1930	John Dennis		Newton, Mississippi	Mississippi	Laborer	Son
1930	John Dennis		Kalamazoo, Michigan	Michigan	—	Son
1940	John Dennis	13	Wayne-County, Michigan	Michigan	—	Son
1940	John L Dennis	11	Lucas-County, Ohio	Ohio	—	Son
1940	John Dennis	23	Essex-County, Massachusetts	Massachusetts	—	Son
1940	John Dennis	48	Wayne-County, Michigan	Arkansas	Painter-Contractor	Head
1940	John A Dennis	21	Orleans-County, Louisiana	Louisiana	Barber	Son
1930	John G. Dennis		Worcester, Massachusetts	Massachusetts	Farmer	Head
1930	John W. Dennis		St Louis, Minnesota	Minnesota	—	Son
1940	John E. Dennis	31	Columbia-County, Arkansas	Arkansas	Farmer	Head
1930	John Dennis		Wilcox, Alabama	Alabama	—	Son
1940	John Dennis	31	Montgomery-County, Texas	Texas	Laborer	Head
1910	John R. Dennis		Providence, Rhode Island	Rhode Island	Manufacturer	Head
1940	John W Dennis	71	Richland-County, South Carolina	South Carolina	—	Head

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About John Dennis US Census Records & Model Tree

We've indexed 4818 free, proprietary US Census records for John Dennis 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 4818 US Census records for John Dennis, 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 Dennis'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 Dennis 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 Dennis 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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