How many John Lamb census records do you have?

We have 5013 US Census records for John Lamb, from 1900 to 1950, across 50 states, DC, and 1 territory.

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

Yes. All John Lamb 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 Lamb?

We have John Lamb records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find John Lamb 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 Lamb?

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 Lamb — US Census Records & Model Tree

We found 5013 free census records for John Lamb across 6 census years (1900–1950), in 50 states, DC, and 1 territory and 1291 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Lamb Census Records by State & County

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Showing of 5013 records for John Lamb US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John Lamb	20	Kings-County, New York	New York	Clerk	Son
1920	John Lamb		Rockingham, Virginia	Virginia	Laborer	Son
1920	John O. Lamb		Montrose, Colorado	Colorado	Farm Laborer	Son
1940	John Lamb	32	Wayne-County, Michigan	Michigan	Salesman	Head
1930	John H Lamb		Crisp, Georgia	Florida	Speculator	Son
1930	John Lamb		Hamilton, Ohio	Ohio	Stenographer	Son
1920	John E Lamb		Jackson, Florida	Wyoming	Farmer	Son
1940	John D. Lamb	35	Worth-County, Georgia	Georgia	Farmer	Head
1940	John Lamb	25	Jasper-County, Iowa	Iowa	Farmer	Son
1930	John M. Lamb		Nelson, North Dakota	Michigan	President	Head
1940	John F. Lamb	58	Hood-County, Texas	Texas	Farmer	Head
1940	John W. Lamb	46	Madison-County, New York	New York	Farmer	Head
1920	John D Lamb		Calhoun, Florida	Georgia	Farmer	Head
1920	John W. Lamb		Montrose, Colorado	Missouri	Farmer	Head
1930	John E. Lamb		San Diego, California	Scotland	Salesman	Head
1940	John Lamb	69	Perry-County, Ohio	Ohio	Locomotive Engineer	Head
1940	John H. Lamb	40	Richmond-County, Georgia	Georgia	Secretary	Head
1930	John T. Lamb		Pender, North Carolina	North Carolina	Farmer	Head
1940	John P Lamb	64	Washington-County, Tennessee	North Carolina	Dentist	Head
1940	John Lamb	44	Kings-County, New York	New York	Salesman	Head
1940	John J. Lamb	66	Oakland-County, Michigan	Kentucky	Real Estate	Head
1920	John Lamb		Greene, Virginia	Virginia	—	Son
1910	John T Lamb		Forsyth, Georgia	Georgia	Mechanic	Head
1940	John Lamb	10	Wabasha-County, Minnesota	Minnesota	—	Son
1910	John E Lamb		Henry, Tennessee	Tennessee	Farmer	Head
1940	John P Lamb	51	Dallas-County, Iowa	Iowa	Wpa Threshing Dist	Head
1920	John Lamb		Harrison, West Virginia	West Virginia	Loader	Son
1910	John E Lamb		Weld, Colorado	Colorado	Laborer	Son
1930	John Lamb		Grayson, Texas	Texas	Laborer	Son
1910	John G. Lamb		San Diego, California	California	—	Son

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About John Lamb US Census Records & Model Tree

We've indexed 5013 free, proprietary US Census records for John Lamb across 1900–1950, covering 50 states, DC, and 1 territory: 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, Puerto Rico, 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 5013 US Census records for John Lamb, from 1900 to 1950, across 50 states, DC, and 1 territory.
: 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 Lamb'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 Lamb 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 Lamb records from the 1900 through 1950 US Federal Census, across 50 states, DC, and 1 territory. 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.