How many John Kovach census records do you have?

We have 3812 US Census records for John Kovach, from 1900 to 1950, across 45 states and DC.

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

Yes. All John Kovach 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 Kovach?

We have John Kovach records from the 1900 through 1950 US Federal Census, across 45 states and DC. Use the year and state filters to narrow your results.

How do I find John Kovach 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 Kovach?

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 Kovach — US Census Records & Model Tree

We found 3812 free census records for John Kovach across 6 census years (1900–1950), in 45 states and DC and 295 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

John Kovach Census Records by State & County

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Showing of 3812 records for John Kovach US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1930	John Kovach		Cuyahoga, Ohio	Ohio	Dish Washer	Son
1930	John Kovach		Allegheny, Pennsylvania	Austria	Labor	Head
1940	John Kovach	61	Schuylkill-County, Pennsylvania	Czecho-Slovakia	Laborer	Head
1930	John Kovach		Cuyahoga, Ohio	Austria	Laborer	Head
1930	John Kovach		Northumberland, Pennsylvania	Austria	Miner	Head
1930	John Kovach		Fayette, Pennsylvania	Austria	Driver	Head
1930	John Kovach		Cambria, Pennsylvania	Austria	Coal Loader	Head
1940	John Kovach	56	Westmoreland-County, Pennsylvania	Russia	—	Head
1920	John Kovach		New York, New York	Austria Hungary	Longshoreman	Head
1940	John Kovach	70	Allegheny-County, Pennsylvania	Austria	—	Head
1930	John Kovach		Hudson, New Jersey	New Jersey	—	Son
1930	John Kovach		Hudson, New Jersey	Austria	Laborer	Head
1940	John Kovach	18	Allegheny-County, Pennsylvania	Pennsylvania	Laborer	Son
1940	John Kovach	45	Allegheny-County, Pennsylvania	Czechoslovakia	Laborer	Head
1920	John Kovach		Belmont, Ohio	Austria	Miner	Head
1930	John Kovach		Kings, New York	Austria	Laborer	Head
1920	John Kovach		Belmont, Ohio	Austria	Miner	Son
1930	John Kovach		None, None	Austria	Laborer	Head
1930	John Kovach		Luzerne, Pennsylvania	Austria	Miner	Head
1930	John Kovach		Cuyahoga, Ohio	Pennsylvania	Laborer	Son
1940	John Kovach	21	Mahoning-County, Ohio	Ohio	Laborer	Son
1920	John Kovach		None, None	Pennsylvania	—	Son
1940	John Kovach	16	Wyandotte-County, Kansas	Kansas	—	Son
1930	John Kovach		Allegheny, Pennsylvania	Pennsylvania	—	Son
1940	John Kovach	18	Fayette-County, Pennsylvania	Pennsylvania	New Worker	Son
1930	John Kovach		Hudson, New Jersey	New Jersey	Laborer	Son
1930	John Jr. Kovach		Cuyahoga, Ohio	Czechoslovakia	Welder	Son
1930	John Kovach		Will, Illinois	Jugoslavia	Laborer	Head
1930	John Kovach		Luzerne, Pennsylvania	Slovakia	Laborer	Head
1930	John Kovach		Tazewell, Virginia	Austria Hungary	Coal Miner	Son

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About John Kovach US Census Records & Model Tree

We've indexed 3812 free, proprietary US Census records for John Kovach across 1900–1950, covering 45 states and DC: Alaska, Arizona, Arkansas, California, Colorado, Connecticut, 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 York, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, 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 3812 US Census records for John Kovach, from 1900 to 1950, across 45 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 Kovach'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 Kovach 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 Kovach records from the 1900 through 1950 US Federal Census, across 45 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.

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