City comparison
Plainfield, IL is about 60 miles (100 km) from Rockford, IL in a straight line. By road, the drive is roughly 80 miles, or about 1 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 Plainfield, IL to Rockford, IL takes about 7 min, covering roughly 60 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 44,941 in Plainfield — about 3.3× larger by population. By land area, Rockford covers about 65 sq mi vs 26 sq mi for Plainfield.
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 | Plainfield | Rockford | Difference |
|---|---|---|---|
| Median rent | $1,847/mo | $906/mo | 103.9% higher in Plainfield |
| Median home value | $377,200 | $114,100 | 230.6% higher in Plainfield |
| Median household income | $143,064 | $50,744 | 181.9% higher in Plainfield |
| Groceries index | 106.3 | 93.9 | 13.2% higher in Plainfield |
| Utilities index | 84.3 | 89.6 | 6.3% higher in Rockford |
| Transportation index | 100.2 | 99.3 | 0.8% higher in Plainfield |
| Healthcare index | 100.4 | 99.5 | 0.8% higher in Plainfield |
How much you'd need to earn in the other city to keep the same standard of living.
If you earn $100,000 in Plainfield, you'd need $80,371 in Rockford to maintain your standard of living.
Climate, safety, and demographics side by side.
Rockford, IL is about 19.6% cheaper overall than Plainfield, IL, based on our cost-of-living index. Housing costs are roughly 64% higher in Plainfield than in Rockford. If you earn $80,000 in Plainfield, you'd need about $64,297 in Rockford to keep the same standard of living.