How many Margaret Hamilton census records do you have?

We have 5213 US Census records for Margaret Hamilton, from 1900 to 1950, across 50 states and DC.

What's in a Margaret Hamilton census record?

You'll see Margaret'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 Margaret Hamilton'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 Margaret Hamilton census records free?

Yes. All Margaret Hamilton 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 Margaret Hamilton?

We have Margaret Hamilton 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 Margaret Hamilton 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 Margaret Hamilton?

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.

Margaret Hamilton — US Census Records & Model Tree

We found 5213 free census records for Margaret Hamilton across 6 census years (1900–1950), in 50 states and DC and 1120 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

Margaret Hamilton Census Records by State & County

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Showing of 5213 records for Margaret Hamilton US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Margaret M. Hamilton	29	Baltimore-County, Maryland	Maryland	—	Wife
1930	Margaret Hamilton		Marion, Indiana	Indiana	Hair Dresser	Daughter
1930	Margaret E Hamilton		Morgan, Colorado	Colorado	Teacher	Daughter
1940	Margaret Hamilton	27	Berkshire-County, Massachusetts	Massachusetts	—	Wife
1940	Margaret Hamilton	26	Alameda-County, California	California	Inspector	Wife
1940	Margaret Hamilton	31	Essex-County, New Jersey	New Jersey	—	Wife
1940	Margaret S Hamilton	34	Ashtabula-County, Ohio	Ohio	—	Wife
1930	Margaret F Hamilton		Middlesex, Massachusetts	Massachusetts	Teacher	Daughter
1930	Margaret J. Hamilton		Cook, Illinois	Illinois	None	Daughter
1920	Margaret Hamilton		Cook, Illinois	Ireland	—	Wife
1940	Margaret Hamilton	39	Marion-County, Indiana	Illinois	—	Wife
1920	Margaret Hamilton		Essex, Massachusetts	Scotland	—	Wife
1940	Margaret Hamilton	80	Union-County, New Jersey	Scotland	—	Head
1940	Margaret Hamilton	65	Rensselaer-County, New York	New York	Saleslady	Wife
1940	Margaret B. Hamilton	54	Essex-County, Massachusetts	Scotland	—	Wife
1940	Margaret J. Hamilton	80	Los-Angeles-County, California	Ohio	—	Wife
1900	Margaret Hamilton	38	Hampden, Massachusetts	Ireland	—	Wife
1940	Margaret Hamilton	54	Mahoning-County, Ohio	Scotland	—	Wife
1920	Margaret M. Hamilton		Middlesex, Massachusetts	Ireland	None	Wife
1940	Margaret Hamilton	44	San-Francisco-County, California	Scotland	—	Wife
1930	Margaret V. Hamilton		Washington, Pennsylvania	Pennsylvania	—	Head
1940	Margaret Hamilton	67	Essex-County, New Jersey	Scotland	—	Wife
1940	Margaret Hamilton	71	Allegheny-County, Pennsylvania	England	—	Head
1910	Margaret Hamilton		Augusta, Virginia	Virginia	—	Head
1910	Margaret C Hamilton		Rockbridge, Virginia	Virginia	—	Daughter
1940	Margaret Hamilton	16	Suffolk-County, Massachusetts	Massachusetts	—	Daughter
1920	Margaret Hamilton		Essex, New Jersey	New Jersey	Packer	Daughter
1930	Margaret B Hamilton		Philadelphia, Pennsylvania	Scotland	—	Wife
1930	Margaret H. Hamilton		Pickens, South Carolina	South Carolina	—	Daughter
1920	Margaret Hamilton		Burke, North Carolina	North Carolina	—	Wife

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About Margaret Hamilton US Census Records & Model Tree

We've indexed 5213 free, proprietary US Census records for Margaret Hamilton 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 Margaret 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 5213 US Census records for Margaret Hamilton, from 1900 to 1950, across 50 states and DC.
: You'll see Margaret'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 Margaret Hamilton'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 Margaret Hamilton 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 Margaret Hamilton 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.