Where to register your vehicle in Cobb County

Vehicle registration in Cobb County is handled by the Cobb County Tax Assessor's Office, not the Georgia Department of Revenue. You can register in person at their office in Marietta, by mail, or online through the Georgia Department of Revenue's website. The Tax Assessor's Office is located at 100 Cherokee Street, Marietta, GA 30090, and their phone number is (770) 528-8500.

If you choose to register online, you'll go through the state system at dor.georgia.gov, but your registration and tag will be processed through Cobb County. Online registration works for renewals and some new registrations, though new vehicles and out-of-state transfers often require in-person visits or mail submission with original documents.

Mail-in registration requires sending your completed process, proof of ownership, proof of insurance, and payment to the Tax Assessor's Office. Processing time by mail typically takes two to three weeks. In-person registration at the Marietta office is usually faster — most transactions complete within 30 to 45 minutes, though wait times vary by time of day and season.

Key Takeaways

  • The Cobb County Tax Assessor's Office handles all vehicle registration, located at 100 Cherokee Street in Marietta.
  • You can register online through the Georgia Department of Revenue website, by mail, or in person at the Tax Assessor's Office.
  • Registration requires proof of ownership (title or bill of sale), proof of Georgia auto insurance, and payment of registration fees.
  • Cobb County registration fees depend on your vehicle's age and weight, and you'll also pay a state fee that varies by vehicle type.
  • In-person registration usually takes 30 to 45 minutes; mail processing takes two to three weeks.

Documents you'll need to bring or send

For a new registration in Cobb County, you need the vehicle's title or bill of sale, your Georgia driver's license or ID, and proof of Georgia auto insurance. The insurance proof can be a declaration page from your policy, an insurance card, or a letter from your insurer showing your policy number and coverage dates. Your insurance must be active on the day you register.

If you're transferring a registration from another state, bring the out-of-state title or registration, a bill of sale if the title is in someone else's name, and your Georgia ID. If the vehicle is financed, you'll need the lender's name and loan number from your loan documents. For a renewal, you typically need only your current registration card and proof of insurance.

Bring or send the original title or a certified copy — a photocopy alone won't work. If your title is held by a lender, contact them to request a copy or ask whether they can submit it directly to the Tax Assessor's Office on your behalf.

Registration fees and what they cover

Cobb County registration fees are based on your vehicle's age and gross vehicle weight rating (GVWR). A passenger car typically costs between $20 and $35 per year for the county portion, though this varies. The state of Georgia charges an additional fee that depends on your vehicle type — passenger vehicles, trucks, motorcycles, and RVs each have different rates.

Your registration fee covers your license plate tag and registration card. If you need a replacement tag because yours is lost, stolen, or damaged, there is an additional fee, usually around $5 to $10. Personalized or specialty plates cost more than standard tags.

You can contact the Tax Assessor's Office at (770) 528-8500 to ask for your specific fee before you register. They can calculate it based on your vehicle's year, make, model, and weight. Payment methods at the office include cash, check, and card; online registration accepts card payments only.

How to renew your Cobb County registration

Renewal notices are mailed to the address on file about 30 days before your tag expires. The notice includes your renewal fee and instructions for renewing online, by mail, or in person. You can renew online at dor.georgia.gov without visiting the office if your information hasn't changed and your insurance is current.

To renew by mail, send your renewal notice, proof of current Georgia insurance, and payment to the Tax Assessor's Office. Mail renewals take two to three weeks. If you renew in person, bring your renewal notice, proof of insurance, and payment; the process usually takes 15 to 30 minutes.

Your registration expires on the last day of the month shown on your tag. You can renew up to 30 days before expiration without penalty. If your tag expires and you haven't renewed, you cannot legally drive the vehicle; driving with an expired tag can result in a traffic citation.

What happens if you move within or to Cobb County

If you move to a new address within Cobb County, you don't need to re-register your vehicle — your current registration remains valid. However, you should update your address with the Tax Assessor's Office so renewal notices reach you. You can update your address by phone at (770) 528-8500, by mail, or in person.

If you move to Cobb County from another Georgia county, your current registration is still valid until it expires. When you renew, you'll renew through Cobb County. If you move to Cobb County from another state, you have 30 days to register your vehicle in Georgia. After 30 days, driving with an out-of-state tag is not permitted.

To register an out-of-state vehicle in Cobb County, bring your out-of-state title, bill of sale (if applicable), Georgia ID, and proof of Georgia insurance to the Tax Assessor's Office. You'll surrender your out-of-state tag and receive a Georgia tag.

Replacing a lost, stolen, or damaged tag

If your license plate is lost, stolen, or damaged, you can get a replacement at the Tax Assessor's Office in person or by mail. Bring or send your current registration card, a police report if the tag was stolen, and payment for the replacement fee (typically $5 to $10). The office will issue a new tag with the same number as your original.

If your tag was stolen, filing a police report is not required to get a replacement, but it protects you if the tag is used on another vehicle. You can file a report with the Cobb County Police Department or your local police jurisdiction.

Replacement tags usually arrive within one to two weeks if ordered by mail, or you can pick one up the same day if you visit in person. Temporary tags are not issued; you'll need to wait for your permanent replacement before displaying a current tag.

Hours and contact information for the Tax Assessor's Office

The Cobb County Tax Assessor's Office is open Monday through Friday, 8:00 a.m. to 5:00 p.m., closed on weekends and county holidays. The office is located at 100 Cherokee Street, Marietta, GA 30090. You can reach them by phone at (770) 528-8500 or visit their website at cobbassessor.org.

Wait times are typically shortest on Tuesday through Thursday mornings. Mondays and Fridays tend to be busier. If you're registering a vehicle for the first time or transferring from out of state, plan for a longer visit — 45 minutes to an hour is common.

The office does not take walk-in appointments; service is first-come, first-served. During peak times, you may wait 30 minutes or more. Calling ahead with questions about documents or fees can save you a trip if your situation is unusual.

Frequently Asked Questions

Can I register my vehicle online if I just bought it?

Online registration works for renewals and some transfers between private parties, but new vehicle purchases typically require in-person registration or mail submission with the original title and bill of sale. Contact the Tax Assessor's Office at (770) 528-8500 to confirm whether your specific purchase can be done online.

What if I don't have a Georgia driver's license yet?

You can register a vehicle with a valid out-of-state ID or passport. However, you must have a Georgia address to register in Cobb County. If you're new to Georgia and don't yet have a Georgia ID, bring your out-of-state ID and proof of your Georgia address (utility bill, lease, or mail from a government agency).

Do I need to register my vehicle if I'm only visiting Cobb County?

No. If you're visiting temporarily and your vehicle is registered in another state or country, you can drive it in Georgia for up to 30 days without registering. If you stay longer than 30 days, you must register it in Georgia. Military personnel stationed in Georgia may have different rules; contact the Tax Assessor's Office for details.

What if my vehicle title is held by a lender?

Contact your lender and ask them to send a copy of the title to the Tax Assessor's Office, or request a copy for yourself. Some lenders mail copies directly; others require you to pick one up. Bring the lender's copy along with your loan documents showing the lender's name and your loan number when you register.

How long does it take to get my registration after I pay?

In-person registration is when ready — you receive your tag and registration card the same day. Mail-in registration takes two to three weeks. Online registration takes one to two weeks for your tag to arrive by mail; your registration is active when ready upon payment, but you cannot legally display your tag until it arrives.