Child Support in Del Norte County, California

Del Norte County uses its own online systems instead of a statewide vendor: a Case Portal at cmsportal.dncourt.com for tracking filings, and a separate Mailbox Access system at mailbox.dncourt.com for submitting documents electronically. The Superior Court of California, County of Del Norte sits at 450 H St #209, Crescent City, 95531, phone 707-464-8115.

Unlike several of its inland neighbors, Del Norte runs its own Local Child Support Agency rather than sharing one across counties. The Del Norte County Local Child Support Agency is at 1225 Marshall Street Suite 18 in Crescent City. It can establish parentage and set a guideline order. It can also collect or enforce payments directly.

Family Code section 4055 governs the calculation everywhere in California, including Del Norte, factoring in each parent's net income and the timeshare split. Run your numbers through the state's free calculator at childsupport.ca.gov/guideline-calculator ahead of a hearing, since the guideline amount is presumed correct unless a party successfully argues otherwise. From there, either file a Request for Order (FL-300) with an Income and Expense Declaration (FL-150) through the court's own e-filing tools or on paper, or ask the local agency to open a case for you.

Crescent City sits on California's far north coast, a long drive from almost anywhere else. Del Norte's electronic filing and mailbox systems matter more here than in a county where a courthouse trip is a short drive.

How child support is calculated in California

California sets child support with a statewide uniform guideline (Family Code section 4055) that applies the same way in Del Norte County as everywhere else. The formula is based mainly on two things:

1. Both parents' net disposable incomes.
2. The percentage of time the child spends with each parent (the timeshare).

The guideline amount is presumed to be correct, and courts use a calculator to run the numbers. Because the result depends on accurate income, the Income and Expense Declaration (Form FL-150) you file is what drives your number.

Where child support cases are handled in Del Norte County

Child support in Del Norte County is handled through the Superior Court of California, County of Del Norte, and the county's Local Child Support Agency, which is part of the California Department of Child Support Services. There are two common paths:

1. Either parent files a Request for Order (Form FL-300) with an Income and Expense Declaration (Form FL-150) inside a divorce, parentage, or custody case.
2. The Local Child Support Agency opens a case to establish, collect, and enforce support, often at no cost to the parents.

Because courthouse and local agency office details change over time, confirm current details using the official California Courts court finder:

Find the Del Norte County Superior Court (official California Courts finder)

Local notes for Del Norte County

The Case Portal and Mailbox Access system are two different tools. One is for checking status, and the other is for submitting paperwork. Bookmark both if you're filing electronically rather than in person at 450 H St. Confirm with the clerk which document types the Mailbox system accepts before you rely on it for something time-sensitive.

Del Norte's self-help center, listed at delnorte.courts.ca.gov/self-help, can walk a self-represented parent through the right forms. Its exact hours aren't posted, so call ahead to avoid a wasted trip, especially given how far some residents drive to reach Crescent City. The court's site also does not say if a commissioner or judge typically hears child support matters here.

If you're new to the area or just haven't filed here before, call the clerk's office before your first submission through either online system. A document rejected for a formatting issue can cost you real time when the nearest in-person alternative is a courthouse on the far edge of the state.

Official child support resources in Del Norte County

Superior Court of California, County of Del Norte handles child-support filings, located at 450 H St #209, Crescent City 95531. Phone: 707-464-8115.

E-filing is available through https://cmsportal.dncourt.com/. The court runs its own Case Portal (cmsportal.dncourt.com) and a Mailbox Access system (mailbox.dncourt.com) for electronic document submission.

Del Norte County Self-Help Center / Family Law Facilitator (https://www.delnorte.courts.ca.gov/self-help) can help with procedure and paperwork. Helps self-represented parents with forms and procedure; cannot give legal advice for your situation.

• Superior Court of California, County of Del Norte
• Del Norte County Self-Help / Family Law Facilitator
• Del Norte County Local Child Support Agency
• California Guideline Child Support Calculator
• Form FL-300 Request for Order
• Form FW-001 Request to Waive Court Fees

Local details reviewed August 2026. Offices and locations can change, so confirm with the official sites above before you file.

Del Norte County Child Support FAQs