City comparison
Brentwood, CA is about 400 miles (650 km) from Oceanside, CA in a straight line. By road, the drive is roughly 500 miles, or about 8 h 30 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, CA to Oceanside, CA takes about 49 min, covering roughly 400 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.
Oceanside has a population of 173,722, vs 64,443 in Brentwood — about 2.7× larger by population. By land area, Oceanside covers about 41 sq mi vs 15 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 | Oceanside | Difference |
|---|---|---|---|
| Median rent | $2,451/mo | $2,078/mo | 17.9% higher in Brentwood |
| Median home value | $735,500 | $644,600 | 14.1% higher in Brentwood |
| Median household income | $134,689 | $86,701 | 55.3% higher in Brentwood |
| Groceries index | 107.4 | 107.6 | ≈ equal (Oceanside slightly higher) |
| Utilities index | 165.3 | 169.8 | 2.7% higher in Oceanside |
| Transportation index | 104.8 | 100.0 | 4.8% higher in Brentwood |
| Healthcare index | 104.8 | 100.0 | 4.8% higher in Brentwood |
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 $99,202 in Oceanside to maintain your standard of living.
Climate, safety, and demographics side by side.
Oceanside, CA is about 0.8% cheaper overall than Brentwood, CA, based on our cost-of-living index. If you earn $80,000 in Brentwood, you'd need about $79,362 in Oceanside to keep the same standard of living.