City comparison
San Tan Valley, AZ is about 125 miles (225 km) from Sierra Vista, AZ in a straight line. By road, the drive is roughly 175 miles, or about 2 h 45 min behind the wheel at highway speeds.
Driving distance is a rough estimate (great-circle × 1.25); driving time assumes a 60 mph blended average. Real trips run 10–20% longer with stops.
A direct flight from San Tan Valley, AZ to Sierra Vista, AZ takes about 16 min, covering roughly 125 miles in a straight line. Connecting itineraries with a layover typically add 1–3 hours.
Block-to-block estimate at ~500 mph cruise, including taxi, climb, and descent — what an airline would publish, not pure airborne time.
San Tan Valley has a population of 101,207, vs 45,212 in Sierra Vista — about 2.2× larger by population. By land area, Sierra Vista covers about 150 sq mi vs 76 sq mi for San Tan Valley.
Population from US Census ACS. Land area from the Census Gazetteer (city proper, excluding inland water).
Cost indices by category, with the US city average (100) marked.
Index: 100 = US city average. Lower is more affordable.
Side-by-side costs, salaries, and sub-category indices.
| Metric | San Tan Valley | Sierra Vista | Difference |
|---|---|---|---|
| Median rent | $1,729/mo | $1,080/mo | 60.1% higher in San Tan Valley |
| Median home value | $304,000 | $215,900 | 40.8% higher in San Tan Valley |
| Median household income | $88,466 | $70,899 | 24.8% higher in San Tan Valley |
| Groceries index | 95.8 | 96.9 | 1.1% higher in Sierra Vista |
| Utilities index | 96.2 | 94.9 | 1.3% higher in San Tan Valley |
| Transportation index | 104.1 | 100.3 | 3.8% higher in San Tan Valley |
| Healthcare index | 104.0 | 100.2 | 3.8% higher in San Tan Valley |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in San Tan Valley, you'd need $76,382 in Sierra Vista to maintain your standard of living.
Climate, safety, and demographics side by side.
Sierra Vista, AZ is about 23.6% cheaper overall than San Tan Valley, AZ, based on our cost-of-living index. Housing costs are roughly 92% higher in San Tan Valley than in Sierra Vista. If you earn $80,000 in San Tan Valley, you'd need about $61,105 in Sierra Vista to keep the same standard of living.