How many John Mann census records do you have?

We have 4099 US Census records for John Mann, from 1900 to 1950, across 50 states and DC.

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

Yes. All John Mann 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 Mann?

We have John Mann 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 Mann 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 Mann?

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 Mann — US Census Records & Model Tree

We found 4099 free census records for John Mann across 6 census years (1900–1950), in 50 states and DC and 1015 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 4099 records for John Mann US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John H. Mann	50	Grant-County, Oklahoma	Kansas	Farming	Head
1940	John Jr. Mann	38	Bernalillo-County, New Mexico	New Mexico	Farmer	Head
1920	John R Mann		Norfolk, Massachusetts	Scotland	None	Son
1940	John A Mann	38	Bergen-County, New Jersey	New Jersey	Floor Clerk	Head
1920	John E Mann		Pulaski, Arkansas	Arkansas	Farmer	Head
1940	John Mann	46	Franklin-County, North Carolina	North Carolina	Operator	Head
1930	John W. Mann		Marshall, Indiana	Indiana	Farmer	Head
1940	John Mann	17	Suffolk-County, Massachusetts	Massachusetts	—	Son
1930	John Henry Mann		Lincoln, Washington	Washington	Farmer	Head
1930	John Mann		Vermilion, Illinois	Illinois	Farmer	Head
1920	John Mann		New York, New York	New York	—	Son
1930	John L. Mann		Cabell, West Virginia	West Virginia	Laborer	Son
1940	John Mann	16	Delaware-County, Pennsylvania	Pennsylvania	No	Son
1940	John Mann	20	Allegheny-County, Pennsylvania	New Jersey	Laborer	Son
1910	John Mann		Choctaw, Mississippi	Georgia	Farmer	Head
1940	John Mann	52	Clay-County, Georgia	Georgia	Laborer	Head
1940	John Mann	13	Suffolk-County, Massachusetts	Massachusetts	—	Son
1910	John M. Mann		Dale, Alabama	Florida	Farmer	Head
1930	John Mann		Beaver, Pennsylvania	Pennsylvania	—	Son
1910	John E Mann		New York, New York	New York	Inspector	Son
1930	John Jr. Mann		Suffolk, Massachusetts	Massachusetts	—	Son
1930	John L. Mann		Grant, Oklahoma	Oklahoma	Laborer	Son
1940	John Mann	11	Suffolk-County, Massachusetts	MASSACHUSETTS	—	Son
1910	John I Mann		Alamance, North Carolina	North Carolina	Farm Laborer	Son
1940	John Mann	20	Monroe-County, Ohio	Ohio	Farmer	Son
1940	John Mann	24	Philadelphia-County, Pennsylvania	Penna	—	Son
1940	John R. Mann	24	Ramsey-County, Minnesota	Minnesota	Laborer	Son
1940	John Mann	11	St.-Croix-County, Wisconsin	Wisconsin	—	Son
1910	John H Mann		Fulton, Pennsylvania	Pennsylvania	Farmer	Head
1910	John Mann		New York, New York	New York	Engineer	Son

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About John Mann US Census Records & Model Tree

We've indexed 4099 free, proprietary US Census records for John Mann 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 4099 US Census records for John Mann, 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 Mann'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 Mann 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 Mann 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.

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