A bar number is the identification number your state’s licensing agency keeps for your law license — the handle that points to your registration in that agency’s records.
Per the ABA, lawyers are licensed by a state agency in each state, and that agency can confirm whether a person has a law license and may practice there.
This guide covers what the number is for, where it comes up, and how to track yours down.
What a bar number is
A bar number is the identification number your state’s licensing agency keeps for your law license — the handle that points to your registration in that agency’s records.
You will also see the term attorney registration number; our research did not document which states use which label.
Whatever the term, it points to one lawyer’s record at one agency.
The license is the credential; the number is where that credential lives in the agency’s system.
The per-state frame is the ABA’s own: lawyers are licensed by a state agency in each state, and that agency can confirm whether a person has a law license and may practice there.
The ABA also keeps a state-by-state directory of those agencies — state by state is what it is, and no national agency is in it.
Our research documents no national bar number above the states’ either, so every question about a bar number, including where to find yours, routes back to one agency.
Where you use your bar number
The number’s home turf is your agency’s registration system, and registering is where it comes up — on the cycle your agency runs.
Illinois’ ARDC charges an annual registration fee — $385 for 2026 for active lawyers admitted before January 1, 2025, while lawyers admitted since then pay no fee for 2026.
The payment is one transaction; the registration it keeps current is the record your number identifies.
Renewal can carry more than a payment.
California’s annual renewal, open February 1 to March 30, has six parts: record verification, Client Trust Account Protection Program reporting, fee payment, MCLE compliance reporting (for the reporting group), a civility oath declaration and pro bono hours reporting — and missing the deadline brings late fees and can lead to suspension.
Outside the agency, the number comes up wherever someone needs to point your licensing agency at the right record — a firm confirming that a candidate or new hire is licensed, for example.
Per the ABA, the state agency is the body that can confirm whether a person has a law license and may practice there; your bar number helps that conversation land on the right record.
Where a form asks for the number, the body asking sets the format it wants.
Follow those instructions rather than any general rule.
How to find your bar number
Start with your state’s licensing agency — per the ABA, the body that can confirm whether a person has a law license.
The ABA’s state-by-state directory is the index to those agencies — open your state’s entry, follow it to the agency’s own site, and take the route it gives you, whether that is an attorney search or its member services.
Agencies differ in what they put online.
California posts attorneys’ public profiles online, and disciplinary records appear on the profile.
In New Hampshire and South Dakota, the ABA’s directory directs you to call the bar association to confirm a lawyer’s license and good standing.
Your own agency’s route is on that map — its site, or a call, tells you which.
If what you need is broader than your own number — checking a license’s status, yours or anyone else’s — our attorney license lookup guide covers the record itself: where each state’s lookup lives, what it shows and how to read it.
Confirm with your state’s licensing agency
Bar numbers in multiple states
Licensing is state by state, so two state licenses mean two records at two agencies.
A bar number identifies the record at one agency, not both: each agency keeps its own registration, on its own calendar — New York attorneys, for one, re-register every two years with the Office of Court Administration.
Our research did not document how the agencies’ numbering compares, so if you pick up a second admission, get your number from that state’s agency directly.
Whether you can practice in the second state at all is its own question — our guide to practicing in a state where you are not licensed covers the rules.
Career information for attorneys and the firms that hire them — not legal advice. Registration records are kept by each state’s licensing agency; confirm what yours shows with that agency.

