Child Support in Trinity County, California

Trinity County shares its child support agency with Humboldt County. The North Coast Regional Child Support Services office in Weaverville is at 850 B Main Street. It is the same regional agency that serves Humboldt County families across the mountain to the west.

The courthouse is still local: Superior Court of California, County of Trinity, 11 Court Street, Weaverville, CA 96093, phone (530) 623-1208. No e-filing portal is listed on the court's site. The court tells filers to contact court services directly, so expect to file in person or by mail, not electronically.

Support is set statewide under Family Code 4055. The formula uses each parent's net income and the percentage of time the child spends with each parent. It works the same in mountainous Trinity County as anywhere else. Estimate your number at childsupport.ca.gov. Then file Form FL-300 with an FL-150 income declaration at the Weaverville courthouse, or contact North Coast Regional Child Support Services instead.

Ask the clerk about Form FW-001 if you cannot afford the filing fee. After an order is entered, California generally adds an automatic income withholding order to the paying parent's wages. That rule applies the same way no matter which county's agency staff processed the case. A family law facilitator can help a self-represented parent understand the FL-150 and FL-300 forms, but cannot advise how a specific case should turn out.

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 Trinity 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 Trinity County

Child support in Trinity County is handled through the Superior Court of California, County of Trinity, 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 Trinity County Superior Court (official California Courts finder)

Local notes for Trinity County

Trinity County is one of California's least populated and most remote counties. It has no incorporated city inside its borders. That is part of why its child support agency is shared with Humboldt rather than run on its own. Weaverville is the only courthouse, so every filing goes through one building.

Because e-filing is not available, call (530) 623-1208 before driving to Weaverville. This matters especially when some Trinity County addresses are far from the county seat.

The self-help center and family law facilitator can help with forms like FL-150 and FL-300, but they cannot give advice about your specific case. Hours are not posted, so confirm before visiting. Because Trinity County has no incorporated city, some addresses can be miles from the nearest paved road. That is part of why calling ahead before a court date matters more here than in a denser county.

Official child support resources in Trinity County

Superior Court of California, County of Trinity handles child-support filings, located at 11 Court Street, Weaverville 96093. Phone: (530) 623-1208.

No e-filing portal is listed on the court's site; the court directs filers to contact court services directly, and Trinity County's family support cases are handled jointly with Humboldt County's agency.

Trinity County Self-Help Center / Family Law Facilitator (https://www.trinity.courts.ca.gov/self-help/family-law-facilitator) 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 Trinity
• Trinity County Self-Help / Family Law Facilitator
• North Coast Regional Child Support Services
• 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.

Trinity County Child Support FAQs