City comparison
Joliet, IL is about 20 miles (30 km) from Naperville, IL 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 Joliet, IL to Naperville, IL 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.
Joliet has a population of 150,221, vs 149,089 in Naperville — about the same size. By land area, Joliet covers about 66 sq mi vs 39 sq mi for Naperville.
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 | Joliet | Naperville | Difference |
|---|---|---|---|
| Median rent | $1,174/mo | $1,787/mo | 52.2% higher in Naperville |
| Median home value | $233,800 | $482,600 | 106.4% higher in Naperville |
| Median household income | $84,971 | $143,754 | 69.2% higher in Naperville |
| Groceries index | 106.3 | 106.4 | ≈ equal (Naperville slightly higher) |
| Utilities index | 84.3 | 84.4 | ≈ equal (Naperville slightly higher) |
| Transportation index | 100.2 | 100.3 | ≈ equal (Naperville slightly higher) |
| Healthcare index | 100.4 | 100.2 | ≈ equal (Joliet 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 Joliet, you'd need $101,807 in Naperville to maintain your standard of living.
Climate, safety, and demographics side by side.
Joliet, IL is about 1.8% cheaper overall than Naperville, IL, based on our cost-of-living index. Housing costs are roughly 4% higher in Naperville than in Joliet. If you earn $80,000 in Joliet, you'd need about $81,445 in Naperville to keep the same standard of living.