Most states require car insurance when you register your vehicle. In 43 states and Washington, D.C., you need to present proof of insurance during registration. Whether you bought a new car or moved to another state, you must get car insurance before registering your vehicle.
However, there are a few exceptions. In Mississippi, New Hampshire, North Dakota, Tennessee, Virginia, Washington and Wisconsin, registration doesn't officially require car insurance. In these states (except New Hampshire and Virginia), you still have to carry proper car insurance coverage to drive legally. So even though it may not be required for registration, having adequate car insurance remains necessary to drive in these states.