How many John Foster census records do you have?

We have 18521 US Census records for John Foster, from 1900 to 1950, across 50 states, DC, and 2 territories.

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

Yes. All John Foster 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 Foster?

We have John Foster records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. Use the year and state filters to narrow your results.

How do I find John Foster 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 Foster?

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 Foster — US Census Records & Model Tree

We found 18521 free census records for John Foster across 6 census years (1900–1950), in 50 states, DC, and 2 territories and 2265 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Foster Census Records by State & County

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Showing of 18521 records for John Foster US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John W. Jr. Foster	40	Denver-County, Colorado	Colorado	Surgeon	Head
1940	John E. Foster	41	Baltimore-City-County, Maryland	Maryland	—	Head
1930	John Foster		Cumberland, New Jersey	New Jersey	Laborer	Head
1940	John F. Foster	45	Middlesex-County, Massachusetts	Massachusetts	Shipper	Head
1920	John Archie Foster		Catahoula, Louisiana	Louisiana	—	Son
1940	John Foster	29	Mecklenburg-County, North Carolina	South Carolina	Laborer	Head
1940	John H. Foster	34	Philadelphia-County, Pennsylvania	Pennsylvania	Machinist	Head
1930	John Foster		Allegheny, Pennsylvania	Pennsylvania	—	Son
1940	John Foster	29	Davidson-County, Tennessee	Tennessee	Laborer	Son
1930	John S. Foster		Frederick, Maryland	Maryland	Proprietor	Head
1940	John R. Foster	22	Lycoming-County, Pennsylvania	Pennsylvania	General Office Work	Son
1940	John Foster	20	Philadelphia-County, Pennsylvania	Pennsylvania	Oiler	Son
1940	John Foster	23	Westchester-County, New York	New York	Check Proofer	Son
1940	John Foster	32	Crawford-County, Pennsylvania	Pennsylvania	Truck Driver	Son
1920	John F. Foster		Duval, Florida	Florida	Clerk	Son
1940	John Foster	50	Spartanburg-County, South Carolina	South Carolina	Farmer	Head
1940	John C. Foster	50	Fergus-County, Montana	Iowa	Owner Farmer	Head
1940	John H. Foster	64	Ramsey-County, Minnesota	England	—	Head
1940	John H. Foster	63	Young-County, Texas	Alabama	Farmer	Head
1940	John Foster	42	Bergen-County, New Jersey	New York	Salesman Driver	Head
1940	John H. Foster	64	Jefferson-County, Tennessee	Tennessee	Carpenter	Head
1920	John M. Foster		El Paso, Colorado	Colorado	Manager	Head
1940	John Foster	63	Camden-County, New Jersey	Pennsylvania	Office Work	Head
1930	John B. Foster		Harrison, Missouri	Missouri	Carpenter	Head
1940	John Foster	79	Columbia-County, Arkansas	Alabama	—	Head
1930	John Foster		Mathews, Virginia	Virginia	Farmer	Head
1910	John Foster		Monterey, California	Portugal	Farmer	Head
1940	John M. B. Foster	51	New-Castle-County, Delaware	Delaware	Engine Driver	Head
1920	John Q Foster		Independence, Arkansas	Arkansas	Farmer	Head
1910	John W Foster		Hinds, Mississippi	Mississippi	—	Son

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About John Foster US Census Records & Model Tree

We've indexed 18521 free, proprietary US Census records for John Foster across 1900–1950, covering 50 states, DC, and 2 territories: Alabama, Alaska, American Samoa, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, 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 18521 US Census records for John Foster, from 1900 to 1950, across 50 states, DC, and 2 territories.
: 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 Foster'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 Foster 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 Foster records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 2 territories. 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.