City comparison
Brentwood, TN is about 100 miles (175 km) from Chattanooga, TN in a straight line. By road, the drive is roughly 125 miles, or about 2 h 15 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 Brentwood, TN to Chattanooga, TN takes about 13 min, covering roughly 100 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.
Chattanooga has a population of 181,288, vs 44,830 in Brentwood — about 4.0× larger by population. By land area, Chattanooga covers about 140 sq mi vs 42 sq mi for Brentwood.
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 | Brentwood | Chattanooga | Difference |
|---|---|---|---|
| Median rent | $2,459/mo | $1,066/mo | 130.7% higher in Brentwood |
| Median home value | $842,400 | $230,500 | 265.5% higher in Brentwood |
| Median household income | $181,576 | $57,703 | 214.7% higher in Brentwood |
| Groceries index | 96.5 | 96.2 | ≈ equal (Brentwood slightly higher) |
| Utilities index | 74.0 | 76.1 | 2.8% higher in Chattanooga |
| Transportation index | 95.6 | 95.8 | ≈ equal (Chattanooga slightly higher) |
| Healthcare index | 95.1 | 95.3 | ≈ equal (Chattanooga slightly higher) |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Brentwood, you'd need $85,344 in Chattanooga to maintain your standard of living.
Climate, safety, and demographics side by side.
Chattanooga, TN is about 14.7% cheaper overall than Brentwood, TN, based on our cost-of-living index. Housing costs are roughly 46% higher in Brentwood than in Chattanooga. If you earn $80,000 in Brentwood, you'd need about $68,275 in Chattanooga to keep the same standard of living.