San Tan Valley is a community in Pinal County, Arizona, home to about 109,189 people across 76 square miles. Its ZIP codes are 85140 and 85143, and parts of 85142 are in San Tan Valley too.
Homes sold for a median of $216 per square foot across 2 ZIP codes in the three months ending August 2026, and 0 of 2 were seller’s markets.
Mostly San Tan Valley; also Queen Creek
Mostly San Tan Valley; also Florence
Mostly Queen Creek; part is in San Tan Valley
Each card is that ZIP code’s whole market, including any part outside San Tan Valley. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up San Tan Valley’s story and what everyday life there is like, for people thinking about moving in.
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| Nearest major airport | Phoenix Sky Harbor International Airport (PHX)30 miles away |
|---|---|
| Closer regional airport | Mesa Gateway Airport (AZA)9 miles away |
| Nearest city of 250,000+ | Gilbert, AZ12 miles away |
| Nearest city of 1 million+ | Phoenix, AZ39 miles away |
Straight-line distances from the center of San Tan Valley; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
San Tan Valley had 99,894 residents in the 2020 census, up 23% since 2010.
It’s the 11th largest of 441 towns in Arizona by population.
Pinal County grew from 7,779 residents in 1900 to 425,264 in 2020.
Pinal County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 107°F in summer, and winter lows average 36°F. About 8.3 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Casa Grande Nm, AZ weather station (15 miles away).
63,258 jobs at 4,723 businesses in Pinal County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
316 doctors and other health care providers list an office in San Tan Valley’s ZIP codes.
Nearest hospitals
Providers with an office here
| Primary care doctors | 25 |
|---|---|
| Specialist doctors | 28 |
| Dentists | 31 |
| Nurse practitioners and physician assistants | 111 |
| Mental health providers | 57 |
| Physical and occupational therapists | 51 |
| Optometrists | 5 |
| Chiropractors | 8 |
| Pharmacies | 8 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (30 nearby)
Grocery stores (13 nearby)
Pharmacies (12 nearby)
Libraries (2 nearby)
Museums (1 nearby)
Theaters and performance venues (1 nearby)
Counts are within about 5.5 miles of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Florence Unified School District (4437), J O Combs Unified School District (4445), American Leadership Academy Inc. (4348) and others. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Copper BasinSan Tan Valley | Pre-K–8 | 557 | Public | 5.5 mi |
| Early Childhood Learning CenterSan Tan Vly | Pre-K–K | 164 | Special Education | 4.1 mi |
| Ellsworth Elementary SchoolQueen Creek | Pre-K–6 | 516 | Public | 1.3 mi |
| Jack Harmon Elementary SchoolSan Tan Valley | Pre-K–6 | 382 | Public | 1.9 mi |
| Kathryn Sue Simonton ElementaryQueen Creek | Pre-K–6 | 384 | Public | 3.5 mi |
| Ranch Elementary SchoolSan Tan Valley | Pre-K–6 | 509 | Public | 4.5 mi |
| San Tan Heights ElementarySan Tan Valley | Pre-K–8 | 669 | Public | 2.8 mi |
| Skyline Ranch Elementary SchoolSan Tan Valley | Pre-K–8 | 583 | Public | 1.9 mi |
| Walker Butte Middle SchoolSan Tan Valley | Pre-K–8 | 718 | Public | 4.3 mi |
| American Leadership Academy San Tan Valley K-6San Tan Valley | K–6 | 637 | Charter | 1.9 mi |
| Champion San TanSan Tan Valley | K–8 | 458 | Charter | 3.5 mi |
| Circle Cross K8 STEM AcademySan Tan Valley | K–8 | 728 | Public | 0.6 mi |
| Combs Online School for SuccessSan Tan Vly | K–12 | 116 | Public | 0.6 mi |
| Combs Traditional AcademySan Tan Valley | K–6 | 211 | Public | 0.6 mi |
| Happy Valley School East CampusSan Tan Valley | K–6 | 396 | Charter | 3.4 mi |
| J. O. Combs Middle SchoolSan Tan Valley | K–8 | 581 | Public | 1.2 mi |
| Legacy Traditional School - Queen CreekQueen Creek | K–9 | 922 | Charter | 3.3 mi |
| Legacy Traditional-San TanSan Tan Valley | K–8 | 749 | Charter | 1.2 mi |
| Combs Center for Success Middle SchoolSan Tan Vly | 6–8 | 4 | Public | 0.6 mi |
| Poston Butte High SchoolSan Tan Valley | 7–12 | 1,310 | Public | 2.8 mi |
| Combs High SchoolSan Tan Valley | 8–12 | 1,182 | Public | 4.8 mi |
| CAVIT - Poston Butte High SchoolQueen Creek | 9–12 | — | Career and Technical | 2.8 mi |
| Combs Center for Success High SchoolSan Tan Vly | 9–12 | 49 | Alternative Education | 0.6 mi |
| EVIT - Combs High SchoolSan Tan Valley | 9–12 | — | Career and Technical | 4.8 mi |
| EVIT American Leadership Academy Ironwood K-12Queen Creek | 9–12 | — | Career and Technical | 0.9 mi |
| Ridgeview College Preparatory High SchoolSan Tan Valley | 9–12 | 229 | Charter | 1.8 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Queen Creek, Gilbert and Florence.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.