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SB1433 • 2026

Maricopa county; division; new counties

SB1433 - Maricopa county; division; new counties

Passed Legislature

This bill passed both chambers and reached final enrollment, even if later executive action is not shown here.

Sponsor
Jake Hoffman
Last action
2026-02-16
Official status
Senate consent calendar
Effective date
Not listed

Plain English Breakdown

The bill text does not provide specific details about how the boundary changes will affect funding or services for the affected areas.

Maricopa County Division and New Counties

This bill changes Maricopa County's boundaries by moving parts into other counties, creating new county borders effective January 1, 2027.

What This Bill Does

  • Modifies the boundary lines of Maricopa County to include areas now part of Gila County, La Paz County, Pinal County, Yavapai County and Yuma County.
  • Requires Legislative Council Staff to prepare legislation that will update state laws to reflect these new county boundaries for consideration in the next legislative session.

Who It Names or Affects

  • Residents of Maricopa County who may find themselves in a different county after the boundary changes.
  • Local governments and agencies that will need to adjust their services based on new county boundaries.

Terms To Know

Conforming Legislation
Laws that are updated or created to match existing laws when there is a change, like the creation of new counties.
Counties
Administrative divisions within a state that provide local government services and administration.

Limits and Unknowns

  • The bill does not specify how these changes will affect funding or services for the affected areas.
  • It is unclear what impact this change might have on local elections, property taxes, or other county-specific regulations.

Bill History

  1. 2026-02-16 Senate

    Senate consent calendar

  2. 2026-01-28 Senate

    Senate second read

  3. 2026-01-27 Senate

    Senate Rules: PFC

  4. 2026-01-27 Senate

    Senate Government: DP

  5. 2026-01-27 Senate

    Senate first read

Official Summary Text

SB1433 - 572R - Senate Fact Sheet

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COMMITTEE

ARIZONA STATE SENATE

Fifty-Seventh
Legislature, Second Regular Session

FACT SHEET FOR
S.B. 1433

Maricopa county;
division; new counties

Purpose

Effective
January 1, 2027, prescribes new boundaries to Maricopa County by moving
portions of the county into the boundaries of Gila County, La Paz County, Pinal
County, Yavapai County and Yuma County.

Background

Arizona is
comprised of 15 counties and statute prescribes the boundaries that encapsulate
each county. Counties may be formed or divided by a legislative enactment,
statewide initiative or county initiative (
A.R.S. Title 11, Chapter 1
).

According to the
2020 U.S. Decennial Census, the population of Maricopa County is estimated to
be 4,420,568 persons, the population of Pinal County is estimated to be 425,257
persons, the population of Gila County is estimated to be 53,272 persons, the population
of Yavapai County is estimated to be 236,218 persons, the population of La Paz
County is estimated to be 16,555 persons and the population of Yuma County is
estimated to be 203,880 persons (
U.S.
Census Bureau
).

In 2025, the
Joint Legislative Budget Committee (JLBC) published a fiscal note on S.B. 1100,
an identical measure to S.B. 1433, which estimated that S.B. 1100 may impact
the state General Fund if the bill affected the eligibility of the outlined
counties to qualify for state assistance. JLBC noted that the legislation would
have a larger fiscal impact at the county level (
JLBC
fiscal note
).

Provisions

1.

Modifies the boundaries of Maricopa County by moving portions of the
county into the boundaries of Gila County, La Paz County, Pinal County, Yavapai
County and Yuma County.

2.

Requires the Legislative Council Staff to prepare proposed legislation
conforming the Arizona Revised Statutes to the formation of the new counties
for consideration in the Fifty-Eighth Legislature, First Regular Session.

3.

Becomes effective January 1, 2027.

Prepared by Senate Research

February 6, 2026

AN/KP/ci

Current Bill Text

Read the full stored bill text
SB1433 - 572R - I Ver

REFERENCE TITLE:
Maricopa county; division; new counties

State of Arizona

Senate

Fifty-seventh Legislature

Second Regular Session

2026

SB 1433

Introduced by

Senator
Hoffman

AN
ACT

amending
title 11, chapter 1, article 1, Arizona Revised Statutes, by adding section 11-106.01;
amending section 11-109, Arizona Revised Statutes; amending title 11, chapter
1, article 1, Arizona Revised Statutes, by adding sections 11-113.01, 11-115.01,
11-116.01 and 11-117.01; relating to location of counties.

(TEXT OF BILL BEGINS ON NEXT PAGE)

Be it enacted by the Legislature of the State of Arizona:

Section 1. Title 11, chapter 1, article 1,
Arizona Revised Statutes, is amended by adding section 11-106.01, to read:

START_STATUTE
11-106.01.

Gila county

Notwithstanding section 11-106, Gila
county is bounded as follows: commencing at the eastern point where the
boundary of Maricopa county intersects with the boundary of Gila county and the
boundary of Pinal county; thence west to the southeastern point where the
boundary of Maricopa county and the boundary of Pinal county meet; thence south
to the point where the boundary of the city of Mesa meets the boundary of Pinal
county; thence west along the boundary of the city of Mesa until it intersects
with the boundary of the city of Tempe; thence west following the boundary of
the city of Tempe until it intersects with the boundary of the city of
Scottsdale; thence westward along the boundary of the city of Scottsdale until
it intersects with the boundary of the town of Paradise Valley; thence west
following the boundary of the town of Paradise Valley until it intersects with
the boundary of the city of Scottsdale; thence northward along the boundary of
the city of Scottsdale until it intersects with the boundary of the town of
Cave Creek; thence following the boundary of the town of Cave Creek west until
the northwestern corner of the town of Cave Creek; thence westward to a point
perpendicular to north seventh street; thence northward parallel to north
seventh street until intersecting with the boundary of Yavapai county; thence
east to the intersection of the boundary of Yavapai county and the boundary of
Gila county.
END_STATUTE

Sec. 2. Section 11-109, Arizona Revised
Statutes, is amended to read:

START_STATUTE
11-109.

Maricopa county

Maricopa county, the county seat of which is Phoenix, is
bounded as follows:

Commencing at a point where the meridian line one
hundred thirteen degrees twenty minutes west longitude, as defined by the
Atwood survey of 1918, intersects the second standard parallel south, being the
northwest corner of Pima county; thence north on such survey line and along the
east boundaries of Yuma and La Paz counties to the point where the meridian
line one hundred thirteen degrees twenty minutes west longitude, as surveyed,
intersects the thirty-fourth parallel north latitude, as defined by the Thompson
survey of 1924; thence east on the thirty-fourth parallel north latitude, as
defined, and along the southern boundary of Yavapai county to the point where
the Hassayampa river intersects such parallel; thence southeast in a direct
line following the Thompson survey of 1924 to a point in the Agua Fria river
two miles southerly and below the mouth of Humbug creek; thence northerly up
the Agua Fria river to a point two miles southerly and below the place where
the residence of J. W. Swilling stood on January 31, 1877; thence easterly in a
direct line following the Thompson survey of 1924 to the point where the
thirty-fourth parallel north latitude, as defined by such survey, intersects
the Verde river; thence east on such parallel to the point where the parallel
as surveyed intersects the summit of the Mazatzal range of mountains; thence
southerly along the summit of the Mazatzal range of mountains to the point
where such range of mountains intersects the centerline of the Salt river;
thence easterly up the Salt river to the mouth of Tonto creek; thence southerly
in a direct line toward a mountain known as the "Water Shed," and
along the western boundary of Gila county to the point where such line and
boundary intersects the north line of township one north; thence west on the
north line of township one north and along the northern boundary of Pinal
county to the point where such line intersects the eastern line of range seven
east; thence south on the eastern line of range seven east to the point where
such line intersects the southern line of township two south; thence west on
such line to the point where such line intersects the Gila river; thence
northerly and westerly down the Gila river to the point where the river
intersects the eastern line of range one east, being the northwest corner of
Pinal county; thence south on such line to the point where such line intersects
the second standard parallel south, being the southwest corner of Pinal county;
thence west on such parallel to the point where it intersects the meridian line
one hundred thirteen degrees twenty minutes west longitude, as defined by the
Atwood survey of 1918, being the place of beginning.

Commencing
at the point where interstate ten intersects the boundary of Pinal county;
thence west along the boundary of Pinal county until it intersects with a point
perpendicular to west ocotillo road; thence west until the southwestern corner
of the Gila River Indian community; thence north to the boundary of the city of
Avondale; thence following the boundary of the city of Avondale north until it
intersects with the boundary of the city of Litchfield Park; thence north along
the eastern boundary of the city of Litchfield Park until it intersects with
the boundary of the city of Glendale; thence following the boundary of the city
of Glendale east until the intersection of forty-third avenue; thence
north along the eastern boundary of the city of Glendale until it intersects
with bell road; thence east along bell road until it intersects with the
boundary of the city of Scottsdale; thence following the boundary of the city
of Scottsdale south until it intersects with the boundary of the town of
Paradise Valley; thence west following the boundary of the town of Paradise
Valley until it intersects with the boundary of the city of Scottsdale; thence
following the boundary of the city of Scottsdale until it intersects with the
Salt River Pima-Maricopa Indian reservation; thence following south along the
boundary of the city of Tempe until it intersects with United States route
sixty; thence following United States route sixty west until it intersects with
interstate ten; thence following interstate ten south until it intersects with
the boundary of the town of Guadalupe; thence east following the boundary of town
of Guadalupe until it intersects with interstate ten; thence following
interstate ten south until it intersects with the boundary of Pinal county.

END_STATUTE

Sec. 3. Title 11, chapter 1, article 1, Arizona
Revised Statutes, is amended by adding sections 11-113.01, 11-115.01, 11-116.01
and 11-117.01, to read:

START_STATUTE
11-113.01.

Pinal county

Notwithstanding section 11-113, Pinal
county is bounded as follows: commencing where interstate ten intersects with
the boundary of Pinal county; thence north following interstate ten until it
intersects with the boundary of the town of Guadalupe; thence following the
eastern boundary of the town of Guadalupe until it intersects with interstate
ten; thence following interstate ten until it intersects with united states
highway sixty; thence east along United States highway sixty until it
intersects with the boundary of the city of Mesa; thence continuing east along
the boundary of the city of Mesa until it intersects with the boundary of Pinal
county.
END_STATUTE

START_STATUTE
11-115.01.

Yavapai county

Notwithstanding section 11-115, Yavapai
county is bounded as follows: commencing at the corner where the boundary of
Yavapai county, the boundary of La Paz county and the boundary of Maricopa
county intersect; thence south to the point where interstate ten intersects the
boundary of La Paz county; thence east along interstate ten until it intersects
with the boundary of the city of Buckeye; thence north following the boundary
of the city of buckeye until it intersects with the boundary of the city of
Litchfield Park; thence east along the boundary of the city of Litchfield Park
until it intersects with the boundary of the city of Phoenix; thence east along
the boundary of the city of Phoenix until it intersects with forty-third
avenue; thence north along the boundary of the city of Glendale until it
intersects with bell road; thence east along bell road until it intersects with
the boundary of the city of Scottsdale; thence north along the boundary of the
city of Scottsdale until it intersects with the boundary of the town of Cave
Creek; thence west following the boundary of the town of Cave Creek to the
northwest corner; thence west until perpendicular to north seventh street;
thence north until it intersects with the boundary of Yavapai county.
END_STATUTE

START_STATUTE
11-116.01.

Yuma county

Notwithstanding section 11-116, Yuma
county is bounded as follows: commencing at the point where interstate eight
intersects the boundary of Yuma county; thence east until the point where
interstate eight intersects Painter Rock Dam road; thence north from the point
where interstate eight intersects Painter Rock Dam road until the intersection
with the boundary of the Gila River; thence following the boundary of the Gila
River east until it intersects with the boundary of the city of Buckeye; thence
east following the boundary of the city of Buckeye until it intersects with a
point parallel to west Patterson road; thence east until the boundary of the
city of Goodyear; thence east following the boundary of the city of Goodyear
until it intersects with the boundary of Pinal county; thence south following
along of the boundary of Pinal county until it intersects with the boundary of
Pima county; thence following west along the boundary of Pima county until it
intersects with the boundary of Yuma county.
END_STATUTE

START_STATUTE
11-117.01.

La Paz county

Notwithstanding section 11-117, La Paz
county is bounded as follows: commencing at the point where the boundary of La
Paz county, the boundary of Yuma county and the boundary of Maricopa county
intersect; thence north until the point where interstate ten intersects with
the boundary of La Paz county; thence east along interstate ten until it
intersects with the boundary of the city of Buckeye; thence north along the
boundary of the city of Buckeye until it intersects with the boundary of the
city of Goodyear; thence east along the boundary of the city of Goodyear until
it intersects with the boundary of the city of Litchfield; thence east along
the boundary of the city of Litchfield Park until it intersects with the
boundary of the city of Avondale; thence south along the boundary of the city
of Avondale until it intersects with the Gila River Indian community; thence
south following the boundary of the Gila River Indian community until it
intersects with Pinal county; thence south until a point perpendicular to
Schumacher lane; thence following the boundary of the city of Goodyear west
until it intersects with the boundary of Buckeye; thence following west along
the boundary of the city of Buckeye until it intersects with the boundary of
the Gila River; thence following the boundary of the Gila River south until a
point directly north of the point where interstate eight intersects Painter
Rock Dam road; thence south until intersecting interstate eight; thence east
along interstate eight until it intersects with the boundary of Yuma county.
END_STATUTE

Sec. 4.
Conforming legislation

The legislative council staff shall
prepare proposed legislation conforming the Arizona Revised Statutes to the
provisions of this act for consideration in the fifty-eighth legislature,
first regular session.

Sec. 5.
Effective date

This act is effective from and after
December 31, 2026.