REG 6004 Form – If you own a vehicle in California and either live in more than one county for over 30 days a year or regularly use your car or truck for business in a different county than your legal residence, the REG 6004 Form (Statement of Multiple County Use of Vehicle) is the official document you need. This simple one-page California DMV form helps ensure your vehicle registration and related fees are properly allocated among counties based on actual use.
In this complete 2026 guide, you’ll learn exactly what the REG 6004 is, who must file it, how to download the latest PDF, step-by-step filling instructions, mailing details, and answers to frequently asked questions.
What Is the REG 6004 Form?
The REG 6004 is officially titled Statement of Multiple County Use of Vehicle and is issued by the California Department of Motor Vehicles (DMV). It is authorized under California Vehicle Code §4004.5 and Title 13 California Code of Regulations §150.10.
Registered owners use it to notify the DMV when a vehicle:
- Is located at multiple residential addresses for more than 30 days in a calendar year, or
- Is used for business purposes in a county other than the owner’s county of legal residence.
Important note from the DMV: Filing REG 6004 does not change your official registered address on DMV records. To update your address, you must file a separate Notice of Change of Address (DMV 14) online or by mail.
Who Needs to Submit the REG 6004 Form?
You should complete and mail the REG 6004 if any of the following apply:
- You split time between homes in different California counties (e.g., primary residence + vacation home or seasonal work).
- Your business requires regular vehicle use in another county (sales, service calls, deliveries, etc.).
- You want the DMV to have accurate data for county-level allocation of vehicle license fees, use taxes, or other funds.
The DMV relies on the information you provide on this form when determining how long you reside in or use the vehicle in each county.
Why File the Statement of Multiple County Use of Vehicle?
California distributes a portion of vehicle registration fees and related revenue to counties. Accurate multi-county reporting ensures the correct counties receive their fair share based on where the vehicle is actually driven and stored. This form provides a clear, official record that protects both vehicle owners and county governments.
Free Official REG 6004 PDF Download (Current Version)
Direct download link (updated April 2025):
Download REG 6004 Form PDF
- Revision date: 10/2015 (still the current official version)
- One-page fillable form
- No registration or fee required
Always download directly from the official DMV website or the trusted link above to avoid outdated or unofficial versions.
Step-by-Step: How to Fill Out the REG 6004 Form?
The form is straightforward and takes just a few minutes. Here’s exactly what to complete:
- Section 1 – Vehicle Information
- Vehicle Identification Number (VIN)
- Year
- Model
- Make of Vehicle
- Vehicle License Number (plate number)
- Section 2 – Residency / Multiple County Use Information
- List every street address + county where you reside more than 30 days per year (up to 3 lines; attach extra pages if needed).
- List counties (and number of days) where the vehicle is used for business purposes.
- Section 3 – County Where Vehicle Is Located or Used Most of the Time
- Enter the single county where the vehicle spends the majority of its time.
- Section 4 – Certification
- Print your full legal name
- Sign and date the form
- Provide daytime phone number
- Enter your mailing address (this is for DMV correspondence only)
- City and county where you are signing
Pro tip: Use black ink, print clearly, and make a copy for your records before mailing.
How to Submit the Completed REG 6004?
Mail the original signed form to:
Department of Motor Vehicles
P.O. Box 942869
Sacramento, CA 94269-0001
No appointment is needed. There is no filing fee. Processing is handled by mail; the DMV does not send confirmation unless additional information is required.
Frequently Asked Questions (FAQs)
Is the REG 6004 mandatory?
It is required if you are reporting multi-county use as described in the regulations. The form itself says “you may provide,” but submitting it is the official way to notify the DMV.
Can I submit it online?
No. The REG 6004 must be printed, signed, and mailed.
Will this change my vehicle registration county?
No. Your vehicle remains registered at your primary address unless you complete a full address change using DMV 14.
How often do I need to file?
File once when the situation begins, and update if your multi-county usage pattern changes significantly.
Is there a deadline?
File as soon as your multi-county use begins or changes. It helps the DMV maintain accurate records for the current registration year.
Related California DMV Forms You May Need
- DMV 14 – Notice of Change of Address
- REG 256 – Statement of Facts (for additional explanations)
- REG 343 – Application for Title or Registration
For the most current information, always visit the official California DMV website at dmv.ca.gov.
Bottom line: The REG 6004 Form is a quick, free way for California drivers with multi-county lifestyles or businesses to stay compliant and ensure proper fee distribution. Download the official PDF today, fill it out accurately, and mail it in – your counties (and your records) will thank you.
Last updated: April 2026. All information sourced directly from the California DMV and current California Code of Regulations.