How many John Frederick census records do you have?

We have 3255 US Census records for John Frederick, from 1900 to 1950, across 50 states and DC.

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

Yes. All John Frederick 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 Frederick?

We have John Frederick 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 John Frederick 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 Frederick?

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 Frederick — US Census Records & Model Tree

We found 3255 free census records for John Frederick across 6 census years (1900–1950), in 50 states and DC and 760 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Frederick Census Records by State & County

Records per state:

Census Record Search

First Name

Middle Name

Last Name (Required)

Census Year

State

Birth Year

Year Range

Birthplace

Age From

Age To

Exact match: Name Location Year

Alternate First Names (comma-separated)

Alternate Last Names (comma-separated)

County

Sex

Marital Status

Race

Relationship to Head

Occupation

Census Page ID

Family Members (in same household)

Search Records

Showing of 3255 records for John Frederick US Census, ranked by Model Tree richness

No records match your filters.

Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	John L. Frederick	33	Lehigh-County, Pennsylvania	Pennsylvania	Helper	Son
1940	John J. Frederick	33	Union-County, New Jersey	New Jersey	Plumber	Head
1940	John R. Frederick	35	Orleans-County, Louisiana	Louisiana	Plasterer	Head
1940	John Frederick	31	Woodbury-County, Iowa	Iowa	Laborer	Son
1940	John D. Frederick	31	Buchanan-County, Missouri	Missouri	Lawyer	Head
1940	John Frederick	54	Baltimore-City-County, Maryland	Maryland	Laundryman	Head
1940	John Frederick	53	Bernalillo-County, New Mexico	New Mexico	Pipefitter	Head
1930	John Frederick		Allegheny, Pennsylvania	Pennsylvania	Laborer	Head
1940	John Frederick	68	Douglas-County, Minnesota	Ohio	—	Head
1940	John G. Frederick	62	Macomb-County, Michigan	Michigan	Contractor	Head
1940	John D. Frederick	58	Elkhart-County, Indiana	Indiana	Farmer	Head
1940	John Frederick	66	Palo-Alto-County, Iowa	Illinois	—	Head
1900	John Frederick	46	Passaic, New Jersey	New Jersey	Day Laborer	Head
1910	John R Frederick		Lycoming, Pennsylvania	Pennsylvania	Farmer	Head
1920	John Frederick		St Lawrence, New York	Canada French	Plumber	Head
1930	John Frederick		Lee, Alabama	Alabama	—	Son
1940	John Frederick	16	Montgomery-County, Pennsylvania	Pennsylvania	—	Son
1940	John Frederick	18	Broome-County, New York	New York	Carpenter	Son
1940	John Jr Frederick	26	Calhoun-County, South Carolina	South Carolina	Wage Hand	Head
1940	John Frederick	65	Kenosha-County, Wisconsin	Wisconsin	Farmer	Head
1940	John Frederick	55	Wayne-County, Michigan	Poland	Machinist	Head
1910	John Jr. Frederick		Custer, Nebraska	Nebraska	Banker	Head
1930	John R. Frederick		Baltimore, Maryland	Maryland	Supervisor	Son
1930	John Frederick		Calhoun, South Carolina	South Carolina	—	Son
1940	John S. Frederick	12	Baltimore-City-County, Maryland	Maryland	—	Son
1940	John C Frederick	60	Essex-County, New Jersey	Germany	Proprietor	Head
1910	John R Frederick		New Castle, Delaware	Delaware	Laborer	Son
1940	John Jr. Frederick	15	Wayne-County, Michigan	Michigan	—	Son
1920	John W. Frederick		Allegheny, Pennsylvania	Pennsylvania	—	Son
1930	John W. Frederick		Baltimore, Maryland	Maryland	Brakeman	Head

Load More John Frederick Census Records

About John Frederick US Census Records & Model Tree

We've indexed 3255 free, proprietary US Census records for John Frederick 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 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 3255 US Census records for John Frederick, from 1900 to 1950, across 50 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 Frederick'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 Frederick 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 Frederick 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.

Other Frederick US Census Records

Mary Frederick William Frederick

All Frederick census records →

Browse More Surnames

Fowler Fox Francis Frank Franklin Frazier Freeman French Frey Friedman Fritz Frost

← Back to US Census Records