City comparison
Elgin, IL is about 40 miles (70 km) from Rockford, IL in a straight line. By road, the drive is roughly 50 miles, or about 51 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 Elgin, IL to Rockford, IL takes about 5 min, covering roughly 40 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.
Rockford has a population of 148,173, vs 114,190 in Elgin — about 1.3× larger by population. By land area, Rockford covers about 65 sq mi vs 38 sq mi for Elgin.
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 | Elgin | Rockford | Difference |
|---|---|---|---|
| Median rent | $1,190/mo | $906/mo | 31.3% higher in Elgin |
| Median home value | $242,500 | $114,100 | 112.5% higher in Elgin |
| Median household income | $85,998 | $50,744 | 69.5% higher in Elgin |
| Groceries index | 106.3 | 93.9 | 13.2% higher in Elgin |
| Utilities index | 84.3 | 89.6 | 6.3% higher in Rockford |
| Transportation index | 100.2 | 99.3 | 0.8% higher in Elgin |
| Healthcare index | 100.4 | 99.5 | 0.8% higher in Elgin |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Elgin, you'd need $81,892 in Rockford to maintain your standard of living.
Climate, safety, and demographics side by side.
Rockford, IL is about 18.1% cheaper overall than Elgin, IL, based on our cost-of-living index. Housing costs are roughly 57% higher in Elgin than in Rockford. If you earn $80,000 in Elgin, you'd need about $65,514 in Rockford to keep the same standard of living.