Illinois

Distance from Joliet to Rockford

Straight-line distance

69.6mi

Joliet, IL and Rockford, IL are 69.6 miles (112.1 km) apart in a straight line. From Joliet, the shortest path starts out heading NW (318°).

kilometers
112.1
nautical miles
60.5
heading from Joliet
318° NW
heading from Rockford
137° SE
JolietRockford

Orange line: great-circle path · ring: midpoint · thin lines: county borders

How far Joliet is from Rockford

The great-circle distance between the Census internal points of Joliet and Rockford is 69.6 miles, 112.1 km or 60.5 nautical miles. That is the shortest path over the Earth's surface, computed with the haversine formula on a sphere with the mean Earth radius, 6,371.0 km. A course held on one compass bearing (a rhumb line) would be 69.6 miles, practically the same at this range.

Measurements

Miles
69.6
Kilometers
112.1
Nautical miles
60.5
Bearing from Joliet
317.8° NW
Bearing arriving at Rockford
317.1°
Bearing from Rockford
137.1° SE

Halfway between Joliet and Rockford

The great-circle midpoint is at 41.889009, -88.603090 (41°53'20.43"N 88°36'11.12"W). The nearest incorporated place of 1,000 or more people is Maple Park, IL, with 1,482 residents, 1.5 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.

Time zones and daylight

Both use America/Chicago, so there is no time difference. On June 21, Joliet gets 15 h 11 min of daylight and Rockford 15 h 16 min; on December 21, 9 h 10 min and 9 h 05 min. Rockford is 0.74° farther north, so it has the longer summer days and the shorter winter ones.

Population compared

Joliet has 1.0 times the population of Rockford. From July 2020 to July 2024, Joliet changed by +1.0% and Rockford by -0.8%. Both are in Illinois.

  1. 01Joliet, IL151,837 (+1.0%)
  2. 02Rockford, IL147,486 (-0.8%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Joliet from Rockford?

69.6 miles, 112.1 km or 60.5 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Rockford from Joliet?

NW. The great-circle path leaves Joliet on a bearing of 317.8° and arrives at Rockford on 317.1°. The return trip starts on 137.1°.

What is halfway between Joliet and Rockford?

The midpoint is at 41.889009, -88.603090. The nearest incorporated place of 1,000+ is Maple Park, IL, 1.5 miles from it.

Is there a time difference between Joliet and Rockford?

Both use America/Chicago, so there is no time difference.

Which is bigger, Joliet or Rockford?

Joliet, with 151,837 residents in July 2024 against 147,486 for Rockford, 1.0 times as many.

Sources and data as of

Data as of: Census 2024 Gazetteer internal points and Vintage 2024 estimates; time zones from Open-Meteo.

  1. 01Census 2024 Gazetteer, places
  2. 02Census Vintage 2024 subcounty population estimates
  3. 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
  4. 04IANA time zone database (clock times and daylight saving rules)

How every number is computed: methodology. Spotted a wrong figure? Report an error.