California has the most laws of any U.S. state. Its administrative code alone contains roughly 395,608 regulatory restrictions, which puts it far ahead of every other state when you add together the statutes passed by legislators and the binding rules written by state agencies.1U.S. News & World Report. Which State Has the Most Regulations If you narrow the question to statutes only, the answer gets closer: New York and Texas both compete with California at the top. But by any total measure, California wins.
Statutes vs. Regulations: Two Different Counts
“Laws” covers two very different categories. Statutes are written and voted on by a state legislature. Regulations are written by administrative agencies acting under authority the legislature delegated to them. Both carry legal force, and both can get you fined or sued, but they accumulate at different speeds and are measured in different ways.
The most rigorous count of regulatory volume comes from the Mercatus Center’s State RegData project, which runs text-analysis software across every state’s administrative code and tallies five specific terms: “shall,” “must,” “may not,” “prohibited,” and “required.”2George Mason University. RegData: A Numerical Database on Industry-Specific Regulations Each appearance counts as one restriction. The method captures something a page count misses: a single short paragraph can contain ten separate mandates, while three pages of preamble can contain none.
No equivalent nationwide ranking exists for statutes measured by word count or section count, so comparisons between state statutory codes rest on structural descriptions rather than hard totals.
Why California Is So Far Ahead
The California Code of Regulations spans 28 titles and reflects the output of roughly 200 separate regulatory agencies, each authorized to draft binding rules within its area of oversight.3New York Codes, Rules and Regulations. Help – California Code of Regulations The volume is concentrated in environmental protection and workplace safety. The Division of Occupational Safety and Health (Cal/OSHA) maintains its own extensive index of safety standards employers must follow.4California Department of Industrial Relations. Cal/OSHA – Division of Occupational Safety and Health Air quality boards, water agencies, and energy regulators add thousands more provisions. Privacy regulation adds another layer: under the California Consumer Privacy Act, administrative fines can reach $2,663 per violation or $7,988 for intentional violations involving minors’ data.5California Privacy Protection Agency. California Privacy Protection Agency Announces 2025 Increases for CCPA Fines and Penalties
The system keeps growing. Each of those 200 agencies has standing authority to propose new regulations through the Administrative Procedure Act. Once the Office of Administrative Law approves a proposal, it’s filed with the Secretary of State, and the code is updated weekly.6Office of Administrative Law. California Code of Regulations History Research A new batch of binding obligations lands on the books roughly every seven days.
How Other States Compare
New York ranks second with approximately 307,636 regulatory restrictions, followed by Illinois and Texas, each above 200,000.7Mercatus Center. Mapping Regulatory Restrictions in US States New York’s count still trails California’s by roughly 88,000 restrictions, which gives some sense of the gap between first and second place.
On the statutory side, the picture tightens. The New York Consolidated Laws contain dozens of separate chapters covering subjects from banking to environmental conservation to criminal procedure, and the code has been building since the late 1700s.8New York State Senate. Consolidated Laws of New York Older jurisdictions tend to accumulate layers of law that are rarely fully repealed. Texas organizes its statutes into 27 topical codes, including the Penal Code, the Business and Commerce Code, and specialized codes covering natural resources, insurance, and elections.9Texas Legislative Council. Reading Statutes and Bills Illinois also maintains a comprehensive statutory framework through its Compiled Statutes.
The practical takeaway: for total legal volume (regulations plus statutes), California leads clearly. For legislative statutes alone, the race between New York, Texas, and California is much tighter.
Why Some States Pile Up More Law
A few factors drive legal volume to concentrate in certain states.
- Population and economic complexity. States with large, diverse economies need specialized rules for industries that barely exist elsewhere. California regulates a film industry, a massive agricultural sector, and a global technology hub. New York’s financial sector generates its own regulatory ecosystem. More industries mean more agencies, which means more rules.
- Legislative session frequency. Legislatures that meet year-round have more calendar days to introduce, debate, and pass bills than those meeting every other year. Full-time legislatures in California, New York, and Illinois produce more statutory output.
- Historical accumulation. Older legal systems carry forward statutes from prior eras that were never repealed. Removing a law requires affirmative legislative action, and floor time rarely goes to code cleanup when new issues are pressing.
- Agency rulemaking authority. When a legislature grants broad authority to an administrative agency, that agency can issue detailed rules without returning to the legislature. States that lean on this delegation model see their administrative codes balloon.
States Moving the Other Direction
Not every state’s code is expanding. Idaho stands out as the most aggressive example of cutting back. Through a zero-based regulation initiative that required every agency rule to be re-justified from scratch, Idaho eliminated 3,235 pages of regulation by 2024, a 38 percent decrease from its peak in 2018. Between 2020 and 2023, only Idaho and Montana managed to decrease their net pages of regulation. Every other state measured during that period increased its page count, by anywhere from 1.9 to 7.7 percent.10Competitive Enterprise Institute. The Beauty of Regulatory Sunsets
Most states have some form of sunset legislation on the books, ranging from comprehensive programs that automatically terminate agencies unless the legislature reauthorizes them, to selective clauses embedded in individual statutes. Some states treat sunset review as discretionary, meaning the legislature can trigger it but isn’t required to.11The Council of State Governments. Summary of Sunset Legislation Mandatory sunset provisions force a regular accounting of whether rules still serve their purpose; discretionary ones tend to gather dust.
What Heavy Regulation Means for Residents and Businesses
For residents and business owners, a state’s regulatory volume translates directly into compliance costs. Navigating California’s 28 titles of administrative rules often requires hiring specialized attorneys and compliance officers. Those expenses hit small businesses hardest because the cost doesn’t scale down with revenue. A 20-person manufacturing company faces roughly the same regulatory complexity as a 2,000-person competitor but has a fraction of the budget to manage it.
Compliance costs also show up in less obvious places. Professional licensing fees, mandatory annual business filings, and industry-specific permits vary widely from state to state. States with dense regulatory codes tend to have more licensing requirements, more filing obligations, and more opportunities for administrative fines when a deadline is missed or a rule misread. California’s privacy fines alone can stack up quickly at thousands of dollars per violation.
Heavier regulatory states impose higher barriers to entry for new businesses and higher ongoing costs for existing ones. That doesn’t mean every regulation is a net negative, since workplace safety rules and environmental protections produce real benefits. But the sheer volume in a state like California means even well-intentioned rules can interact in ways that create unintended obstacles, particularly for smaller operators who can’t afford a dedicated compliance team.