How many Harold Nelson census records do you have?

We have 6399 US Census records for Harold Nelson, from 1900 to 1950, across 49 states, DC, and 1 territory.

What's in a Harold Nelson census record?

You'll see Harold'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 Harold Nelson'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 Harold Nelson census records free?

Yes. All Harold Nelson 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 Harold Nelson?

We have Harold Nelson records from the 1900 through 1950 US Federal Census, across 49 states, DC, and 1 territory. Use the year and state filters to narrow your results.

How do I find Harold Nelson 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 Harold Nelson?

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.

Harold Nelson — US Census Records & Model Tree

We found 6399 free census records for Harold Nelson across 6 census years (1900–1950), in 49 states, DC, and 1 territory and 1208 counties. Each record includes our Model Tree — the same person linked across decades using machine learning, with per-link confidence scores.

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Showing of 6399 records for Harold Nelson US Census, ranked by Model Tree richness

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Year	Name	Age	Location	Birthplace	Occupation	Relation
1940	Harold L. Nelson	39	Hennepin-County, Minnesota	Minnesota	Machinist	Head
1940	Harold W. Nelson	49	Monroe-County, New York	New York	Farmer	Head
1940	Harold Nelson	44	Henry-County, Illinois	Illinois	Laborer	Head
1940	Harold Nelson	31	Chisago-County, Minnesota	Minnesota	Clerk	Head
1940	Harold Nelson	35	Morrison-County, Minnesota	Minnesota	Farmer	Son
1940	Harold W. Nelson	34	Pierce-County, Washington	Washington	Truck Driver	Son
1920	Harold C. Nelson		Alameda, California	California	Shipping Clerk	Son
1920	Harold Nelson		Hudson, New Jersey	New Jersey	Clerk	Son
1920	Harold Nelson		Vernon, Wisconsin	Wisconsin	—	Son
1930	Harold C Nelson		Mclean, North Dakota	North Dakota	—	Son
1930	Harold J. Nelson		Shawnee, Kansas	Kansas	Clerk	Son
1940	Harold Nelson	21	Latah-County, Idaho	Idaho	Laborer	Son
1930	Harold Nelson		Marshall, Minnesota	Minnesota	Laborer	Son
1940	Harold Nelson	35	Ramsey-County, Minnesota	Minnesota	Painter	Head
1930	Harold Nelson		Thurston, Washington	Washington	Day Clerk	Son
1930	Harold E Nelson		Cook, Illinois	Illinois	Apprentice	Son
1940	Harold Nelson	21	Saline-County, Kansas	Kansas	Truck Driver	Son
1940	Harold Nelson	35	Cook-County, Illinois	Illinois	Radiator Maker	Son
1910	Harold F. Nelson		Mcpherson, Kansas	Kansas	—	Son
1920	Harold Nelson		Essex, New Jersey	New Jersey	Teller	Son
1940	Harold A. Nelson	29	Belmont-County, Ohio	Ohio	Laborer	Son
1940	Harold Nelson	34	Hennepin-County, Minnesota	Minnesota	Work Foreman	Head
1940	Harold E. Nelson	39	Providence-County, Rhode Island	Rhode Island	Fireman (Stat)	Head
1930	Harold Nelson		Mckenzie, North Dakota	North Dakota	None	Son
1940	Harold L. B. Nelson	30	Pottawattamie-County, Iowa	Iowa	Farmer	Son
1920	Harold Nelson		King, Washington	Washington	—	Son
1940	Harold H. Nelson	29	Clinton-County, Iowa	Wisconsin	Mechanic	Head
1920	Harold Nelson		Multnomah, Oregon	Oregon	—	Son
1940	Harold C. Nelson	28	Middlesex-County, Massachusetts	Massachusetts	Machine Operator	Head
1940	Harold H. Nelson	32	Cook-County, Illinois	Illinois	Photographer	Son

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About Harold Nelson US Census Records & Model Tree

We've indexed 6399 free, proprietary US Census records for Harold Nelson across 1900–1950, covering 49 states, DC, and 1 territory: Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Guam, 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 Harold 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 6399 US Census records for Harold Nelson, from 1900 to 1950, across 49 states, DC, and 1 territory.
: You'll see Harold'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 Harold Nelson'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 Harold Nelson 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 Harold Nelson records from the 1900 through 1950 US Federal Census, across 49 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.

Other Nelson US Census Records

Agnes Nelson Albert Nelson Alfred Nelson Alice Nelson Alma Nelson Andrew Nelson Anna Nelson Annie Nelson Arthur Nelson Bertha Nelson Betty Nelson Carl Nelson Carrie Nelson Charles Nelson Clara Nelson Clarence Nelson David Nelson Donald Nelson Doris Nelson Dorothy Nelson Earl Nelson Edith Nelson Edna Nelson Edward Nelson Edwin Nelson Elizabeth Nelson Ella Nelson Ellen Nelson Elmer Nelson Emma Nelson Ernest Nelson Esther Nelson Ethel Nelson Evelyn Nelson Florence Nelson Frank Nelson Fred Nelson George Nelson Gertrude Nelson Gladys Nelson Grace Nelson Hans Nelson Harry Nelson Hazel Nelson Helen Nelson Henry Nelson Herbert Nelson Hilda Nelson Howard Nelson Ida Nelson Irene Nelson James Nelson Jennie Nelson Jessie Nelson John Nelson Joseph Nelson Julia Nelson Kenneth Nelson Laura Nelson Lillian Nelson Lillie Nelson Lois Nelson Louis Nelson Mabel Nelson Margaret Nelson Marie Nelson Martha Nelson Martin Nelson Mary Nelson Mildred Nelson Minnie Nelson Myrtle Nelson Nellie Nelson Nels Nelson Oscar Nelson Paul Nelson Peter Nelson Ralph Nelson Raymond Nelson Richard Nelson Robert Nelson Roy Nelson Ruth Nelson Sarah Nelson Thomas Nelson Walter Nelson William Nelson Willie Nelson

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