County · code 04023
Santa Cruz CountyArizona
Santa Cruz County is located in Arizona with its county seat in Nogales. The county was established in 1899 from Pima County and covers 1,236.2 square miles.
- Founded1899
- County seatNogales
- Named forSanta Cruz River, Arizona
- Land area1,236 sq mi + 1.2 sq mi water
- Population47,669 2020 Census
- Parcels mapped43,225 checked 15 October 2026
Where it is
Santa Cruz on the map of Arizona
Arizona has 15 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1899 from Pima County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Santa Cruz County was created in 1899 by Arizona Territory from Pima County and was named after the Santa Cruz River. In 1968, the county lost territory to Cochise County when the boundary was redefined to run along the east line of range 18 east.
- 1899Santa Cruz County created Santa Cruz created by Arizona Territory from Pima. · Ariz. Terr. Laws 1899, 20th assy./ pp. 49-57
- 1968Lost territory Santa Cruz lost to Cochise when the boundary was redefined to run along the east line of range 18 east. · Ariz. Laws 1968, 28th leg., 1st reg. sess., ch. 82/ pp. 180-182
Land and parcels
What the maps cover in Santa Cruz
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 43,225 parcels. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
edited 14 October 2026 · checked 15 October 2026 -
Address points Missing
No public address points layer found for Santa Cruz County yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- Official
- from the office that keeps the record
- Good enough
- a reliable statewide or national copy
- Fallback
- a guide only; check the official record
- Missing
- nothing public found yet
People and land
Santa Cruz by the Census
Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.
Rules and offices
Santa Cruz County's official site
We have found the county's site but not its offices yet; start there.
County government
- County government
The official website of Santa Cruz County.
See your own lot on these maps
Open Santa Cruz County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.
Questions
Common questions about Santa Cruz County
- When was Santa Cruz County founded?
- Santa Cruz County was founded in 1899, formed from Pima County, and named after Santa Cruz River, Arizona.
- What is the county seat of Santa Cruz County?
- The county seat of Santa Cruz County is Nogales.
- Is there an online parcel map for Santa Cruz County?
- Yes. A public source publishes a parcel map of 43,225 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Santa Cruz County's boundary or name changed?
- Santa Cruz County was created in 1899 from Pima County. Since then the Atlas of Historical County Boundaries records 1 later change, chiefly involving Cochise County.
- Is my lot in a flood zone?
- We do not have flood maps for Santa Cruz County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby