THE MARICOPA COUNTY LAND BRIEF
Land in the
Central Sonoran/Colorado Desert Basins setting.
Maricopa County has 9,202 square miles of land in Arizona. 10 mapped landscape regions meet across Maricopa County: Central Sonoran/Colorado Desert Basins, Arizona Upland/Eastern Sonoran Mountains, Gila/Salt Intermediate Basins, among others.
Hot desert basins are separated by low mountain ranges. Palo verde, cacti and other drought-adapted plants distinguish the Sonoran setting from the Mojave region farther north.
Regional context: Sonoran Basin and Range ↗ · Regional mapping across the county footprint
Where the landscape changes
Maricopa County intersects 10 mapped regional units. The largest mapped shares are:
- Central Sonoran/Colorado Desert Basins28.3%
- Arizona Upland/Eastern Sonoran Mountains26.5%
- Gila/Salt Intermediate Basins13.9%
- Arizona Upland/Eastern Sonoran Basins13.4%
- Central Sonoran/Colorado Desert Mountains6.7%
Arizona/New Mexico Mountains in Maricopa County
These southwestern mountain ranges rise above surrounding deserts and grasslands. Pinyon-juniper and oak woodlands give way to ponderosa pine, with colder forest types limited to the highest areas.
Read the regional source ↗Finding your parcel within Maricopa County
The atlas lists 45 cities, towns, townships, and Census communities associated with Maricopa County, including Phoenix, Buckeye, Goodyear. The list includes overlapping geography types and does not divide the county into exclusive service areas.
Maricopa County by land and water
The Census records 24 square miles of water within Maricopa County, or 0.3% of its total area. That share is close to Maricopa County’s 0.3%. This is geographic context; waterfront status and usable land must be checked at the parcel.
For scale, Maricopa County has 48.1 times the land area of nearby Goodyear city (191.3 square miles). These areas describe boundaries, not comparable property prices.
The Census boundary meets Gila County, La Paz County, Pima County, Pinal County, Yavapai County, Yuma County within Arizona. A tract near one of these lines should be matched to the county identifier on its own records.

