A roll number is a unique identifier assigned to a person, property, or account within an official register, used so that your information can be tracked and distinguished from everyone else’s. The term shows up in property tax bills, UK bank transfers, school records, and voter rolls, and the meaning shifts depending on which system assigned it. What stays constant is the function: the number connects you to one specific entry in a larger record-keeping system.
Roll Numbers on Property Tax and Assessment Records
In property taxation, a roll number identifies a specific parcel of land on an assessment roll, the official list a local government uses to track every taxable property in its jurisdiction. The number links the parcel to its market value, property classification, tax rate, and the amount owed.
“Roll number” as a label is most common in Canadian property systems, particularly Ontario, where the Municipal Property Assessment Corporation assigns one to every property. In the United States, the same concept goes by different names depending on where you live:
- Assessor’s Parcel Number (APN), common in California and many western states
- Property Identification Number (PIN), used across many midwestern and eastern counties
- Folio number, preferred in Miami-Dade County and some other Florida jurisdictions
- Tax map number or tax account number, found in parts of the Northeast and South
Different label, same job: tying a physical piece of land to its assessment and tax record. If you see any of these terms on a tax bill or deed, you’re looking at your property’s roll number equivalent.
How to Find Your Property Roll Number
The fastest place to look is your most recent property tax bill or assessment notice. The number is typically printed near the top alongside the property address and owner name.
If you don’t have a recent bill, most county assessor offices run online search portals where you can look up the number by street address or owner name. Many counties also offer GIS mapping tools: you navigate to the property on an interactive map, click the parcel, and the system shows the identification number along with assessment details. These maps are not survey-grade and shouldn’t substitute for a professional boundary survey in legal matters.
If the online options don’t work, call or visit the county assessor’s office. Bring the property address and, if possible, the owner’s name, and staff can pull the number from their records in minutes.
Roll Numbers for UK Building Society Accounts
In UK banking, a roll number is a reference code containing both letters and numbers that identifies an account at a building society. Building societies are financial institutions similar to credit unions, and some of their accounts use a roll number instead of, or in addition to, a standard eight-digit account number and six-digit sort code.
If you’re sending money to a building society account, the recipient’s roll number goes in the payment reference field. Leaving it out, or adding extra text to that field, can cause the payment to fail or get misapplied. This is the version of “roll number” that catches people out most often, particularly on international transfers or when setting up a first direct deposit to a UK account. When someone asks for a roll number during a bank transfer, they almost always mean this.
How to Find Your Building Society Roll Number
Your roll number appears on your passbook, your account statements, and the online banking portal for the account. If you’re the sender and need the recipient’s roll number, the account holder has to provide it. Their building society can supply it if they’ve lost track of it.
Roll Numbers in Schools and Exams
Schools and universities assign roll numbers as unique student identifiers, usually at enrollment. The number follows a student through their academic career and appears on ID cards, transcripts, and exam admission slips. Administratively, it’s the key that links a student to grades, attendance, and course registrations across every system the institution uses.
“Roll number” as a term is far more common outside the United States. Indian universities, Pakistani examination boards, and many other South Asian institutions use it as the standard label. In the U.S., the equivalent is usually called a student ID number or student identification number. Formats vary: some schools use purely numeric codes, others add year-of-enrollment or campus-specific prefixes. The function is the same regardless of the label.
In exam contexts, a roll number often differs from a student’s regular ID. Examination boards assign separate roll numbers for specific test sessions, printed on the admit card or hall ticket. That number identifies the student’s answer sheet during grading, sometimes anonymously, so evaluators don’t know whose work they’re scoring.
How to Find Your Student Roll Number
Check your student ID card first; the number is almost always printed on it. It also appears on academic transcripts, exam admit cards, and fee receipts, and most institutions make it available through the online student portal. If you still can’t locate it, the registrar’s office or admissions department can retrieve it from your name and enrollment details.
Roll Numbers on the Electoral Roll
The electoral roll is the official list of people registered to vote in a jurisdiction. In the United Kingdom, India, and Australia, each registered voter receives an electoral roll number that acts as their unique identifier on that list. The number helps officials verify eligibility at polling stations and prevent duplicate voting.
In the United States, the equivalent concept exists but the terminology differs. Most states assign a voter registration number when you register, and you can look it up through your state’s election website. Initial registration typically relies on existing identifiers like your driver’s license number or the last four digits of your Social Security number rather than generating a separate “roll number.”1U.S. Election Assistance Commission. Voter Lists: Registration, Confidentiality, and Voter List Maintenance Once registered, most states let you confirm your status and find your registration number through online tools.2USAGov. Voter Registration
How to Find Your Voter Registration Number
In the United States, your state’s election website is the most direct route. Most states offer a “check your registration” tool where you enter your name, date of birth, and address to pull up your details, including any assigned registration number.2USAGov. Voter Registration If your state mailed you a voter registration card, the number is usually printed on it. Your local election office can look it up as well if online tools aren’t available in your area.