Arizona · FIPS 04013 · County seat: Phoenix
Maricopa County, AZ GIS & Parcel Viewer
Looking for lot lines or a parcel number in Maricopa County, AZ? The quickest route is Parcel Viewer for Maricopa County, the county parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Maricopa County parcel map ↗
Opens maps.mcassessor.maricopa.gov in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Parcel Viewer for Maricopa County |
|---|---|
| Type | County-run map |
| Website | maps.mcassessor.maricopa.gov |
| Access | Free, no login (checked Oct 2026) |
| County seat | Phoenix |
| Population | 4,585,871 (2023 Census Bureau estimate) |
| Land area | 9,202 sq mi |
| FIPS code | 04013 |
Who runs this map
This map is published by or for Maricopa County itself, so it reflects the local parcel layer rather than a third-party copy. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Press the button above to open the county's own web map.
- Search for the property or pan and zoom to it.
- Click the lot to bring up what the county publishes about it.
- Look for print or measure tools if you need a quick map or rough size.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
Maricopa County by the numbers
The U.S. Census Bureau estimated Maricopa County's population at 4,585,871 in 2023, spread over about 9,202 square miles of land, or roughly 498 people per square mile. That makes it the most populous of Arizona's 15 counties. Phoenix serves as the county seat.
Neighboring counties
Maricopa County shares a border with the counties below. Each link has its own official map:
Our longer guides
Before you rely on the lines
Keep in mind that a GIS parcel layer is a tax map, not a survey. For exact boundaries, look at the recorded deed and plat or hire a licensed land surveyor.