Concealed carry laws by state fall into three basic systems: 29 states let any legally eligible adult carry a hidden handgun without a permit, most of the rest issue permits to anyone who meets objective requirements, and a shrinking handful still call themselves “may-issue” but can no longer deny permits on subjective grounds after the Supreme Court’s 2022 Bruen decision. Federal law sets a floor on who can possess a firearm at all, and it also governs how you transport one across state lines. Everything else — training hours, fees, where you can carry, whether your permit is honored in the next state, how many rounds your magazine can hold — is decided state by state, and the answers change often enough that yesterday’s information is not a defense.
The Three Permitting Systems
Every state uses one of three frameworks. Which one applies to you controls whether you need a permit at all, and if you do, how much discretion an official has to say no.
Constitutional (Permitless) Carry
Twenty-nine states let anyone legally allowed to own a firearm carry it concealed without a government-issued license. Minimum ages vary. Most set the floor at 21, roughly a dozen allow 18, and several others allow 18-year-olds to carry permitless only if they are active-duty military. Most of these states still offer an optional permit, and getting one is worth considering: it unlocks reciprocity with other states and provides an exemption from the federal Gun-Free School Zones Act, which otherwise restricts armed travel near schools.
Shall-Issue States
In a shall-issue state, the licensing authority must grant your permit if you meet every objective requirement: background check, any required training, age, and fee. The reviewing official has no discretion to deny you based on personal judgment. This is the most common framework in the country. Counting constitutional carry states that still issue optional permits for reciprocity purposes, roughly 41 states operate on a shall-issue basis.
May-Issue States After Bruen
May-issue systems historically gave local officials like a sheriff or police chief broad power to deny permits based on subjective criteria. Applicants often had to prove “good cause” or a “special need” for self-defense beyond ordinary concerns. In practice, permits were common in rural counties and nearly impossible to get in major cities within the same state.
The Supreme Court’s 2022 ruling in New York State Rifle & Pistol Association, Inc. v. Bruen struck down New York’s proper-cause requirement, holding that it violated the Fourteenth Amendment by blocking ordinary citizens with standard self-defense needs from exercising their Second Amendment rights.1Justia. New York State Rifle and Pistol Association, Inc. v. Bruen After that decision, states with similar requirements amended their laws or issued guidance telling licensing officers to stop enforcing subjective criteria. Only a few states still technically classify as may-issue, and their ability to deny permits based on “good cause” has been effectively eliminated.
Who Cannot Carry Anywhere Under Federal Law
Before any state rule matters, federal law defines a category of people who cannot legally possess a firearm at all. Under 18 U.S.C. § 922(g), the following people are prohibited from possessing any firearm or ammunition:2Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts
- Anyone convicted of a crime punishable by more than one year of imprisonment, regardless of the actual sentence.
- Anyone who is a fugitive from justice.
- Anyone who is an unlawful user of, or addicted to, a controlled substance.
- Anyone formally adjudicated as mentally incompetent or involuntarily committed to a mental institution.
- Anyone unlawfully present in the United States or admitted on a nonimmigrant visa, with narrow exceptions.
- Anyone discharged from the military under dishonorable conditions.
- Anyone who has renounced U.S. citizenship.
- Anyone subject to a qualifying domestic violence protective order involving an intimate partner or their child.
- Anyone convicted of a misdemeanor crime of domestic violence.
These disqualifiers apply in every state, override any permit you hold, and cannot be waived by state law. The Bureau of Alcohol, Tobacco, Firearms and Explosives enforces them and publishes guidance for identifying prohibited persons.3Bureau of Alcohol, Tobacco, Firearms and Explosives. Identify Prohibited Persons If any of these categories apply to you, carrying is a federal crime regardless of what your state allows.
Getting a Permit Where One Is Required
States that issue permits layer their own eligibility rules on top of the federal floor. Most set the minimum age at 21, with some lowering it to 18 for active-duty military or veterans, and a smaller number allowing all residents to apply at 18. A few states have created narrow exceptions for people as young as 18 who are subject to active protective orders and need to carry for personal safety.
Training requirements range from nothing at all in permitless states to roughly 16 to 18 hours of combined classroom and range instruction. A typical requirement includes several hours of classroom instruction covering firearm safety, legal use of force, and state-specific carry laws, followed by a live-fire proficiency test. Instructors usually need certification from the state police or a recognized national firearms organization, and the course generally must be completed within the last one to two years before you apply.
Most states require you to live in the state or county where you apply, but many also issue non-resident permits. Those are useful if you travel frequently to a particular state, or if a non-resident permit from another state opens up reciprocity that your home permit doesn’t.
The application itself follows a fairly predictable pattern. You file with the local sheriff’s office or state police, provide proof of training, submit to fingerprinting, and pay a fee. The agency runs your information through the FBI’s National Instant Criminal Background Check System and state-level criminal and mental health databases.4Federal Bureau of Investigation. Firearms Checks (NICS) Fees range from around $40 to more than $400. Processing timelines are just as uneven: a few weeks in some states, 90 to 120 days or longer in others. If your application is denied, the agency generally must explain the specific legal basis, and most states allow an administrative appeal.
Permits are not permanent. Most are valid for about five years, though the range across states runs from two to seven. Renewal usually requires a fresh background check and sometimes updated training, but the process is typically faster and cheaper than the initial application.
Reciprocity Across State Lines
Your permit is issued by one state. Whether it travels with you is a different question, and the agreements are neither uniform nor intuitive.
Full reciprocity means two states have a formal agreement to honor each other’s permits. Conditional reciprocity means a state will recognize your permit only if your home state’s requirements meet or exceed its own. A state with a live-fire training mandate might refuse to honor permits from states that accept an online-only safety course. Unilateral recognition happens when a state honors all valid out-of-state permits regardless of whether the other state returns the favor.
Constitutional carry states often extend permitless carry to any visitor who is legally allowed to possess a firearm, not just residents. You could carry without a permit as a visitor in those states even if your home state requires one. Carrying without a permit, though, removes the federal school-zone exemption and may limit where you can carry within that state.
Some states offer no recognition of any out-of-state permits. Carrying in one of those states without obtaining their specific non-resident permit risks felony charges. Reciprocity agreements also change regularly through legislation and executive action, so checking an official source before every trip is not paranoia. State attorneys general typically maintain current recognition lists on their websites.
Transporting a Firearm Through States That Don’t Recognize You
Reciprocity covers carrying. Federal law provides a separate, narrower protection for simply moving a firearm through a state where you cannot legally carry it.
The Peaceable Journey Provision
Under 18 U.S.C. § 926A, you may transport a firearm through any state if you are traveling from a place where you can legally possess it to another place where you can legally possess it, as long as the firearm is unloaded and neither the gun nor any ammunition is readily accessible from the passenger compartment. If your vehicle has no separate trunk, the firearm and ammunition must be in a locked container other than the glove compartment or center console.5Office of the Law Revision Counsel. 18 USC 926A – Interstate Transportation of Firearms
This provision protects transport, not carry. You cannot stop for an extended stay in a restrictive state, unpack the firearm at a hotel, and claim safe passage. The protection applies while you are genuinely in transit. Some states, particularly in the Northeast, have historically been aggressive about arresting travelers who make extended stops, so treat this as a narrow shield rather than a broad permission.
Flying With a Firearm
Air travel is legal but tightly regulated. TSA rules require the firearm to be unloaded, locked in a hard-sided container, and placed in checked baggage only. You must declare it at the airline ticket counter during check-in.6Transportation Security Administration. Firearms Ammunition can go in the same locked case as the firearm or in separate packaging, but loaded magazines must be securely boxed. Firearms are never permitted in carry-on bags under any circumstances.7Transportation Security Administration. Firearms and Ammunition
The catch is that you have to comply with the firearm laws at both your departure and destination airports. Flying into a state where your permit isn’t recognized and you have no legal basis to possess the firearm creates problems the moment you pick up your checked bag.
Where You Still Cannot Carry With a Valid Permit
A permit does not authorize you to carry everywhere. Federal law, state law, and private property rights all create off-limits zones.
Federal Gun-Free Zones
The Gun-Free School Zones Act prohibits carrying a firearm within 1,000 feet of any public or private school. There is an exception if you hold a carry permit issued by the state where the school is located, but that exemption does not extend to out-of-state permit holders.2Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts The distinction matters in constitutional carry states where you might not bother getting a permit: without one, you technically violate federal law every time you pass near a school while armed.
Federal buildings are almost universally off-limits. Carrying into a federal facility like a post office, Social Security office, or GSA-managed building carries up to one year of imprisonment. Bringing the firearm in with intent to commit a crime raises the maximum to five years. Federal courthouses carry a separate penalty of up to two years.8Office of the Law Revision Counsel. 18 USC 930 – Possession of Firearms and Dangerous Weapons in Federal Facilities Any felony conviction resulting from these charges would also make you a prohibited person under § 922(g), permanently stripping your firearm rights.
National Parks and Federal Lands
Since 2010, you may possess a firearm in national parks and national wildlife refuges as long as you comply with the carry laws of the state where the park sits. If the park is in a constitutional carry state, you can carry without a permit. If it’s in a state that requires a permit, you need one. Possessing and using a firearm are different, though: hunting and target shooting remain prohibited in most national park units regardless of state law.9eCFR. 36 CFR 2.4 – Weapons, Traps and Nets Federal buildings within parks, such as visitor centers and ranger stations, remain gun-free zones under 18 U.S.C. § 930.
State-Level Restricted Locations
Every state maintains its own list of places where carrying is illegal even with a valid permit. Common examples include courthouses, legislative buildings, polling places on election days, correctional facilities, and establishments that primarily serve alcohol for on-site consumption. Some states also restrict carry in hospitals, amusement parks, athletic events, and houses of worship. The specific list varies enough between states that checking your destination’s restricted locations before traveling is not optional.
Private Property and Signage
Private property owners can prohibit firearms on their premises by posting signs. The legal weight of those signs varies. In some states, ignoring a posted “No Weapons” sign is itself a criminal offense carrying misdemeanor penalties. In others, the sign carries no legal force on its own, but the owner can ask you to leave, and refusing becomes criminal trespass. Not knowing the specific rule in a given state can turn a policy disagreement into an arrest.
Magazine Capacity Restrictions
Fourteen states and the District of Columbia limit how many rounds a magazine can hold. The most common cap is 10 rounds, though some states set the limit at 15, 17, or 20 depending on the firearm type. A few states grandfather magazines purchased before the restriction took effect; others have no such exception. These restrictions apply to everyone within the state’s borders, including visitors, so a standard-capacity magazine that is legal in your home state can become a criminal offense the moment you cross into a restricted state. If your handgun ships from the factory with a 15-round magazine, you need to know whether your destination considers that illegal before you leave.
Duty to Inform Law Enforcement
Roughly a dozen states and the District of Columbia require concealed carriers to tell an officer they are armed during any official contact, such as a traffic stop. Failure to volunteer this in a duty-to-inform state can result in criminal charges separate from any other violation. In states without this requirement, you generally must answer truthfully if an officer asks whether you are carrying, but you have no obligation to bring it up on your own.
Even in states with no legal duty to inform, many experienced carriers volunteer the information anyway. An officer who discovers a concealed firearm without prior notice is more likely to escalate the encounter. Leading with “I have a carry permit and I am armed” tends to produce better outcomes for everyone involved.
Self-Defense Laws Vary by State
Carrying a firearm and being legally justified in using it are two entirely separate questions. Every state allows the use of deadly force against an imminent threat of death or serious bodily harm, but how far that right extends outside the home varies dramatically.
Castle Doctrine
Nearly every state recognizes some version of the castle doctrine, which eliminates any obligation to retreat when you are inside your own home. If someone breaks in and you reasonably believe they pose an imminent deadly threat, you can use lethal force without first trying to escape. Some states extend the doctrine to your vehicle and workplace.
Stand Your Ground vs. Duty to Retreat
The critical split happens outside the home. At least 31 states have stand your ground laws that remove the duty to retreat from any place where you have a legal right to be. In these states, if you face a deadly threat on the street, in a parking lot, or in a park, you can defend yourself with lethal force without first attempting to flee. The remaining states impose a duty to retreat, meaning you must try to safely disengage before resorting to deadly force, unless retreating would put you at greater risk.
Some states with stand your ground protections also grant civil immunity, shielding you from lawsuits by the attacker or their family if the force is later determined to have been lawful. States without this immunity leave open the possibility that you can be acquitted of criminal charges but still lose a civil wrongful death suit. Which category your state falls into shapes both how you respond in a crisis and what financial exposure you face afterward.
Verify Before You Travel
Concealed carry law is one of the fastest-moving areas of state legislation. Multiple states have adopted constitutional carry in just the last few years, and the Bruen decision forced a wholesale restructuring of permitting in former may-issue states. Magazine capacity laws face ongoing court challenges, reciprocity agreements shift with new administrations, and states regularly update their prohibited-location lists. Treating any single resource as permanently accurate is a mistake. Before you carry in any state, verify the current rules through that state’s attorney general or state police. The consequences of relying on outdated information are criminal charges, not a fine.