City comparison
Fond du Lac, WI is about 80 miles (125 km) from Janesville, WI in a straight line. By road, the drive is roughly 100 miles, or about 1 h 45 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 Fond du Lac, WI to Janesville, WI takes about 10 min, covering roughly 80 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.
Janesville has a population of 65,669, vs 44,527 in Fond du Lac — about 1.5× larger by population. By land area, Janesville covers about 35 sq mi vs 19 sq mi for Fond du Lac.
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 | Fond du Lac | Janesville | Difference |
|---|---|---|---|
| Median rent | $868/mo | $993/mo | 14.4% higher in Janesville |
| Median home value | $148,500 | $186,600 | 25.7% higher in Janesville |
| Median household income | $58,675 | $68,610 | 16.9% higher in Janesville |
| Groceries index | 94.0 | 94.0 | ≈ equal |
| Utilities index | 91.2 | 90.5 | 0.8% higher in Fond du Lac |
| Transportation index | 99.2 | 99.2 | ≈ equal |
| Healthcare index | 99.4 | 99.4 | ≈ 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 Fond du Lac, you'd need $105,975 in Janesville to maintain your standard of living.
Climate, safety, and demographics side by side.
Fond du Lac, WI is about 5.6% cheaper overall than Janesville, WI, based on our cost-of-living index. Housing costs are roughly 18% higher in Janesville than in Fond du Lac. If you earn $80,000 in Fond du Lac, you'd need about $84,780 in Janesville to keep the same standard of living.