City comparison
Decatur, AL is about 20 miles (30 km) from Huntsville, AL in a straight line. By road, the drive is roughly 20 miles, or about 25 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 Decatur, AL to Huntsville, AL takes about 2 min, covering roughly 20 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.
Huntsville has a population of 215,025, vs 57,525 in Decatur — about 3.7× larger by population. By land area, Huntsville covers about 225 sq mi vs 55 sq mi for Decatur.
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 | Decatur | Huntsville | Difference |
|---|---|---|---|
| Median rent | $801/mo | $1,020/mo | 27.3% higher in Huntsville |
| Median home value | $170,000 | $236,300 | 39.0% higher in Huntsville |
| Median household income | $55,164 | $67,874 | 23.0% higher in Huntsville |
| Groceries index | 96.6 | 96.6 | ≈ equal |
| Utilities index | 85.7 | 84.9 | 0.9% higher in Decatur |
| Transportation index | 97.0 | 97.0 | ≈ equal |
| Healthcare index | 96.5 | 96.5 | ≈ equal |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Decatur, you'd need $110,352 in Huntsville to maintain your standard of living.
Climate, safety, and demographics side by side.
Decatur, AL is about 9.4% cheaper overall than Huntsville, AL, based on our cost-of-living index. Housing costs are roughly 34% higher in Huntsville than in Decatur. If you earn $80,000 in Decatur, you'd need about $88,281 in Huntsville to keep the same standard of living.