How many Bertha Lewis census records do you have?

We have 3944 US Census records for Bertha Lewis, from 1900 to 1950, across 49 states and DC.

What's in a Bertha Lewis census record?

You'll see Bertha'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 Bertha Lewis'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 Bertha Lewis census records free?

Yes. All Bertha Lewis 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 Bertha Lewis?

We have Bertha Lewis 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 Bertha Lewis 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 Bertha Lewis?

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.

Bertha Lewis — US Census Records & Model Tree

We found 3944 free census records for Bertha Lewis across 6 census years (1900–1950), in 49 states and DC and 1213 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Bertha Lewis Census Records by State & County

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Showing of 3944 records for Bertha Lewis US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Bertha Lewis	22	Leslie-County, Kentucky	Kentucky	Cook	Daughter
1940	Bertha Lewis	25	St.-Louis-City-County, Missouri	Missouri	—	Wife
1940	Bertha Lewis	25	Allegany-County, New York	New York	School Teacher	Daughter
1930	Bertha Lewis		Watonwan, Minnesota	Maine	—	Head
1930	Bertha Lewis		Carteret, North Carolina	North Carolina	None	Wife
1940	Bertha A. Lewis	57	Rensselaer-County, New York	New York	—	Wife
1940	Bertha Lewis	56	Boyd-County, Kentucky	Kentucky	—	Wife
1940	Bertha E Lewis	47	Jefferson-County, Kansas	Kansas	—	Wife
1940	Bertha Lewis	55	Worcester-County, Massachusetts	MAINE	Power Stitching	Wife
1910	Bertha Lewis		Philadelphia, Pennsylvania	Pennsylvania	None	Wife
1910	Bertha Lewis		Wayne, North Carolina	North Carolina	None	Daughter
1920	Bertha Lewis		Bradford, Pennsylvania	Pennsylvania	Servant	Daughter
1930	Bertha Lewis		Pitt, North Carolina	North Carolina	—	Daughter
1910	Bertha Lewis		Bladen, North Carolina	North Carolina	Farm Laborer	Daughter
1930	Bertha Lewis		Riley, Kansas	Kansas	—	Daughter
1920	Bertha Lewis		Uintah, Utah	Utah	—	Daughter
1940	Bertha Lewis	14	Leslie-County, Kentucky	Kentucky	—	Daughter
1910	Bertha L. Lewis		Sheridan, Kansas	Kansas	—	Daughter
1940	Bertha Lewis	44	St.-Louis-County, Missouri	Arkansas	—	Wife
1940	Bertha May Lewis	19	Mclennan-County, Texas	Texas	Servant	Daughter
1930	Bertha B Lewis		Montgomery, Tennessee	Tennessee	—	Daughter
1910	Bertha G. Lewis		Boulder, Colorado	Nebraska	—	Daughter
1940	Bertha L. Lewis	28	Washakie-County, Wyoming	Wyoming	—	Daughter
1910	Bertha Lewis		Philadelphia, Pennsylvania	Pennsylvania	Looper	Daughter
1940	Bertha Lewis	49	St.-Charles-County, Louisiana	Louisiana	—	Wife
1920	Bertha Lewis		Salt Lake, Utah	Utah	—	Daughter
1920	Bertha Lewis		Baxter, Arkansas	Arkansas	None	Daughter
1930	Bertha E. Lewis		Gates, North Carolina	North Carolina	—	Wife
1930	Bertha G. Lewis		Carteret, North Carolina	North Carolina	None	Daughter
1920	Bertha Lewis		Pottawattamie, Iowa	Iowa	—	Daughter

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About Bertha Lewis US Census Records & Model Tree

We've indexed 3944 free, proprietary US Census records for Bertha Lewis 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 Bertha 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 3944 US Census records for Bertha Lewis, from 1900 to 1950, across 49 states and DC.
: You'll see Bertha'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 Bertha Lewis'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 Bertha Lewis 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 Bertha Lewis 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.