How many John Keller census records do you have?

We have 6434 US Census records for John Keller, from 1900 to 1950, across 49 states and DC.

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

Yes. All John Keller 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 Keller?

We have John Keller 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 Keller 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 Keller?

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 Keller — US Census Records & Model Tree

We found 6434 free census records for John Keller across 6 census years (1900–1950), in 49 states and DC and 1143 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Keller Census Records by State & County

Records per state:

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Showing of 6434 records for John Keller US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John H Keller	39	Turner-County, South Dakota	South Dakota	Farmer	Head
1930	John Keller		Kings, New York	New York	None	Son
1940	John W Keller	22	Ramsey-County, Minnesota	Minnesota	Helper	Son
1940	John Keller	57	Tyler-County, West Virginia	West Virginia	Caretaker	Head
1940	John Keller	57	Union-County, New Jersey	Hungary	Machinist	Head
1920	John Keller		Lake, Michigan	Ohio	Farmer	Head
1930	John Keller		Logan, Colorado	Colorado	None	Son
1930	John Keller		Otero, Colorado	Colorado	—	Son
1930	John Keller		Madison, North Carolina	North Carolina	—	Son
1940	John Keller	15	Lancaster-County, Pennsylvania	Pennsylvania	—	Son
1930	John Keller		Otero, Colorado	Russia	Farmer	Head
1910	John Keller		Watauga, North Carolina	North Carolina	Farmer	Head
1910	John M. Keller		Marion, West Virginia	West Virginia	Farmer	Head
1920	John W Keller		Swift, Minnesota	Minnesota	—	Son
1940	John Keller	44	Allegheny-County, Pennsylvania	Pennsylvania	Craneman	Head
1940	John Keller	17	Allegheny-County, Pennsylvania	Pennsylvania	—	Son
1910	John C. Keller		Bucks, Pennsylvania	Pennsylvania	Cigar Maker	Head
1940	John Keller	32	Lehigh-County, Pennsylvania	Pennsylvania	Laborer	Son
1940	John Keller	25	Lancaster-County, Nebraska	Nebraska	Carpenter Helper	Son
1940	John W Keller	51	Saguache-County, Colorado	Colorado	Lumberman	Head
1940	John Keller	62	Scott-County, Iowa	Switzerland	Farm Operator	Head
1940	John Keller	47	Fayette-County, Kentucky	Kentucky	Farmer	Head
1940	John Keller	20	Lehigh-County, Pennsylvania	Pennsylvania	New Worker	Son
1940	John Keller	59	Emmons-County, North Dakota	Russia	Laborer	Head
1940	John Keller	18	Baltimore-City-County, Maryland	Maryland	Messenger	Son
1940	John Keller	10	Woodbury-County, Iowa	Iowa	—	Son
1940	John Keller	58	Wells-County, North Dakota	Russia	Farmer	Head
1920	John Keller		Philadelphia, Pennsylvania	Pennsylvania	—	Son
1930	John K. Keller		Pierce, North Dakota	North Dakota	Farmer	Head
1930	John Keller		Kossuth, Iowa	Iowa	Farm Labor	Son

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About John Keller US Census Records & Model Tree

We've indexed 6434 free, proprietary US Census records for John Keller across 1900–1950, covering 49 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, 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 6434 US Census records for John Keller, 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 Keller'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 Keller 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 Keller 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.