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SB 1100

Maricopa county; division; new counties

57th Legislature - First Regular Session Introduced by Joseph Chaplik and 5 co-sponsors

SB 1100 would divide Maricopa County into multiple new counties, restructuring governance for 4+ million residents and creating new administrative jurisdictions with complex fiscal and service implications.

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Bill Summary · SB 1100

Legislative bill overview

SB 1100 proposes dividing Maricopa County, Arizona into multiple new counties. The bill would fundamentally restructure county-level governance in one of Arizona's most populous counties by creating separate administrative jurisdictions from the current unified Maricopa County system.

Why is this important

Maricopa County is Arizona's largest county by population (over 4 million residents) and includes Phoenix, the state capital. Dividing it would create new local government structures, potentially affecting tax bases, service delivery, administrative costs, and political representation for millions of Arizonans. This represents a significant structural change to county governance with long-term budgetary and operational implications.

Potential points of contention

  • Implementation costs and duplication: Creating new county governments requires establishing duplicate administrative infrastructure (assessor, treasurer, recorder, courts), potentially increasing overall taxpayer costs rather than reducing them
  • Service delivery disruption: Dividing county services could fragment emergency response systems, health services, and regional planning that currently operate on a county-wide basis
  • Political motivation: The bill's sponsorship raises questions about whether the division is driven by geographic/demographic concerns or partisan redistricting goals, as county divisions significantly affect electoral outcomes
  • Voter approval requirements: Constitutional and legal questions exist regarding what voter approval thresholds and processes should govern county division

Compiled from official sources — confirm details with the bill’s official record.

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