Illinois

Distance from Aurora to Rockford

Straight-line distance

52.4mi

Aurora, IL and Rockford, IL are 52.4 miles (84.4 km) apart in a straight line. From Aurora, the shortest path starts out heading NW (311°).

kilometers
84.4
nautical miles
45.6
heading from Aurora
311° NW
heading from Rockford
131° SE
AuroraRockford

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

How far Aurora is from Rockford

The great-circle distance between the Census internal points of Aurora and Rockford is 52.4 miles, 84.4 km or 45.6 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 52.4 miles, practically the same at this range.

Measurements

Miles
52.4
Kilometers
84.4
Nautical miles
45.6
Bearing from Aurora
311.0° NW
Bearing arriving at Rockford
310.5°
Bearing from Rockford
130.5° SE

Halfway between Aurora and Rockford

The great-circle midpoint is at 42.012049, -88.675293 (42°00'43.38"N 88°40'31.05"W). The nearest incorporated place of 1,000 or more people is Sycamore, IL, with 18,968 residents, 1.1 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, Aurora gets 15 h 13 min of daylight and Rockford 15 h 16 min; on December 21, 9 h 09 min and 9 h 05 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Aurora has 1.2 times the population of Rockford. From July 2020 to July 2024, Aurora changed by +0.2% and Rockford by -0.8%. Both are in Illinois.

  1. 01Aurora, IL180,710 (+0.2%)
  2. 02Rockford, IL147,486 (-0.8%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Aurora from Rockford?

52.4 miles, 84.4 km or 45.6 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Rockford from Aurora?

NW. The great-circle path leaves Aurora on a bearing of 311.0° and arrives at Rockford on 310.5°. The return trip starts on 130.5°.

What is halfway between Aurora and Rockford?

The midpoint is at 42.012049, -88.675293. The nearest incorporated place of 1,000+ is Sycamore, IL, 1.1 miles from it.

Is there a time difference between Aurora and Rockford?

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

Which is bigger, Aurora or Rockford?

Aurora, with 180,710 residents in July 2024 against 147,486 for Rockford, 1.2 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.