City comparison
Richardson, TX is about 20 miles (30 km) from Rockwall, TX in a straight line. By road, the drive is roughly 20 miles, or about 20 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 Richardson, TX to Rockwall, TX 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.
Richardson has a population of 118,063, vs 47,859 in Rockwall — about 2.5× larger by population. By land area, Rockwall covers about 30 sq mi vs 29 sq mi for Richardson.
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 | Richardson | Rockwall | Difference |
|---|---|---|---|
| Median rent | $1,725/mo | $1,728/mo | 0.2% higher in Rockwall |
| Median home value | $379,800 | $355,000 | 7.0% higher in Richardson |
| Median household income | $94,362 | $114,799 | 21.7% higher in Rockwall |
| Groceries index | 102.5 | 102.5 | ≈ equal |
| Utilities index | 91.1 | 91.1 | ≈ equal |
| Transportation index | 99.8 | 99.8 | ≈ equal |
| Healthcare index | 99.2 | 99.2 | ≈ 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 Richardson, you'd need $100,009 in Rockwall to maintain your standard of living.
Climate, safety, and demographics side by side.
Richardson and Rockwall have nearly identical overall cost-of-living indices. If you earn $80,000 in Richardson, you'd need about $80,007 in Rockwall to keep the same standard of living.