How to Read a 1900 US Census Record: A Column-by-Column Guide
The 1900 U.S. census is one of the most valuable records in American genealogy. It's the first census to record the month and year of birth for every person, and it includes details about immigration, naturalization, and education that aren't in earlier censuses.
But if you've never read one, the 1900 census can be confusing. There are 28 columns of information, written in handwriting that ranges from elegant to nearly illegible, on pages that are often faded or microfilmed poorly.
This guide walks you through every column on the 1900 census, explains what each one means, and shows you how to extract the maximum information from a single record.
Why the 1900 Census Matters
The 1900 census is special because it includes information not found in other census years:
- Month and year of birth — the only census to record this (other years only list age)
- Number of years married — helps you estimate marriage date
- Number of children born and number still living — helps you find children who died young and may not appear elsewhere
- Year of immigration — critical for immigrant research
- Number of years in the U.S. — tells you how long they've been in the country
- Naturalization status — "Na" (naturalized), "Pa" (first papers filed), or "Al" (alien)
If you're researching ancestors who were alive in 1900, this census is a goldmine. For more on the overall research process, see our how to research family history guide.
Where to Find the 1900 Census for Free
- FamilySearch — free, searchable, with digitized images
- National Archives — free access
- Public libraries — many offer free access to Ancestry's library edition, which includes the 1900 census
For more free resources, see our finding ancestors without paying guide.
The 1900 Census: Column by Column
The 1900 census form has 28 columns. Here's what each one means:
Location Columns (1-4)
| Column | What It Records | How to Use It |
|---|---|---|
| 1. Street | Street name | Helps you find the exact address |
| 2. House number | House number | Cross-reference with city directories |
| 3. Dwelling number | Sequential number of the dwelling | Distinguish from household number |
| 4. Family number | Sequential number of the family | Used by the census taker to track visits |
Personal Information (5-11)
| Column | What It Records | How to Use It |
|---|---|---|
| 5. Name | Full name of each person | Check spelling variations — names were written as the census taker heard them |
| 6. Relationship | Relationship to head of household | Head, wife, son, daughter, boarder, servant, etc. |
| 7. Race | White (W), Black (B), Chinese (CH), Japanese (JP), Indian (IN) | May also include multiracial designations |
| 8. Sex | Male (M) or Female (F) | Verify against other records if unclear |
| 9. Month of birth | Month born | Only census to record this — extremely valuable |
| 10. Year of birth | Year born | Combined with month, gives exact birth date |
| 11. Age at last birthday | Age | Should match the month/year — if not, the informant may have guessed |
Pro tip: Column 9 and 10 are the 1900 census's most unique feature. If you know your ancestor was born in "March 1879" from the census, you can search for a birth certificate with that exact date — far more precise than "about 1879."
Family Information (12-14)
| Column | What It Records | How to Use It |
|---|---|---|
| 12. Whether married | Single (S), Married (M), Widowed (W), or Divorced (D) | Helps determine if a spouse has died |
| 13. Years married | Number of years in current marriage | Subtract from 1900 to estimate marriage year |
| 14. Mother of how many children | Total children born to the mother | May include children who died young |
| 15. Number of these children living | Children still alive in 1900 | Gap between 14 and 15 = children who died |
Pro tip: If columns 14 and 15 differ, your ancestor lost children. Search for birth and death records in the years between marriage and 1900 to find them.
Immigration and Naturalization (16-18)
| Column | What It Records | How to Use It |
|---|---|---|
| 16. Year of immigration to U.S. | Year arrived | Search passenger lists for that year |
| 17. Number of years in the U.S. | Years since arrival | Should be consistent with column 16 |
| 18. Naturalization | Na (naturalized), Pa (first papers), Al (alien) | Na → search naturalization records; Pa → search declaration of intent |
Pro tip: "Al" means your ancestor was not yet a citizen. "Pa" means they had filed a declaration of intent (first papers). "Na" means they were fully naturalized. This tells you which naturalization records to search.
Education (19-20)
| Column | What It Records | How to Use It |
|---|---|---|
| 19. Attended school | Yes or no | Useful if your ancestor was school-aged |
| 20. Can read | Yes or no | Literacy indicator |
Language and Property (21-24)
| Column | What It Records | How to Use It |
|---|---|---|
| 21. Can write | Yes or no | Combined with column 20, shows literacy |
| 22. Can speak English | Yes or no | "No" suggests they spoke their native language — useful for immigrant families |
| 23. Owned or rented | O (owned) or R (rented) | Economic indicator |
| 24. Owned free or mortgaged | F (free) or M (mortgaged) | Financial status |
Farm and Work (25-28)
| Column | What It Records | How to Use It |
|---|---|---|
| 25. Farm or house | F (farm) or H (house) | Distinguishes rural from urban |
| 26. Number of farm schedule | Farm schedule number | References a separate farm schedule (most destroyed) |
| 27. Civil War veteran | Yes or no | If yes, search Civil War service and pension records |
| 28. Whether blind, deaf, or dumb | Notation if applicable | Rare but can add to life story |
Reading the Handwriting
1900 census records were handwritten by enumerators, and quality varies dramatically. Tips for reading difficult entries:
- Compare with other entries — if you can read other names on the page, you can identify letter shapes the enumerator used
- Look at context — if a column says "Ireland" for birthplace, the same person's immigration year should be plausible
- Use the zoom — digitized images on FamilySearch allow significant zooming
- Check adjacent pages — sometimes a difficult entry is clearer on a re-recorded or duplicate page
- Ask for help — genealogy forums and Facebook groups are excellent for deciphering old handwriting
Common Mistakes When Reading the 1900 Census
- Trusting the age without checking the birth month/year — ages were sometimes guessed by informants. The month/year column is more reliable.
- Assuming relationships are biological — "son" could mean stepson, adopted son, or foster son. Check other records to confirm.
- Ignoring the neighbors — families often lived near relatives. Check the preceding and following pages for related surnames.
- Overlooking naturalization status — "Al," "Pa," and "Na" are small letters that are easy to miss but extremely valuable for immigration research.
- Not recording the street address — the address (columns 1-2) helps you find your ancestor in city directories and maps.
Using the 1900 Census to Go Further
Once you've extracted all the information from a 1900 census record, use it to guide your next searches:
- Birth month and year → search for birth certificate
- Years married → search for marriage certificate
- Immigration year → search passenger lists for that year
- Naturalization status → search naturalization records
- Children born vs. living → search for children who died young
- Street address → look up in city directories and maps (see our family history mapping guide)
For help organizing what you find, see our genealogy organization guide. To understand enumeration districts (which help you find census records without searching by name), see our guide to enumeration districts.
FAQ
Where can I find the 1900 census for free?
FamilySearch offers free access to the 1900 census with searchable indexes and digitized images. The National Archives also provides free access. Many public libraries offer free access through Ancestry's library edition.
Why is the 1900 census special?
It's the only U.S. census to record the month and year of birth for every person. It also records years married, number of children born and living, year of immigration, and naturalization status — all details not consistently found in other census years.
What do "Na," "Pa," and "Al" mean?
Na = naturalized citizen, Pa = first papers filed (declaration of intent), Al = alien (not yet a citizen). This tells you which naturalization records to search for your ancestor.
What if I can't find my ancestor in the 1900 census?
Try searching with alternate spellings, using only a first name and birth year, or searching by location instead of name. If they were missed by the census taker (which happened), look for them in city directories, tax records, or the 1910 census. See our guide to tracing family history with only a last name for more search strategies.
How do I organize the information from the census record?
Record every detail in your family history workspace. Ancello lets you link the census record as a source to each person it documents, so the information is always connected to your tree. For more, see our genealogy organization guide.
Ready to dig into the 1900 census? Start a free family history workspace at Ancello →