Iowa to Illinois

Distance from Davenport to Joliet

Straight-line distance

127.0mi

Davenport, IA and Joliet, IL are 127.0 miles (204.5 km) apart in a straight line. From Davenport, the shortest path starts out heading E (90°).

kilometers
204.5
nautical miles
110.4
heading from Davenport
90° E
heading from Joliet
272° W
DavenportJoliet

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

How far Davenport is from Joliet

The great-circle distance between the Census internal points of Davenport and Joliet is 127.0 miles, 204.5 km or 110.4 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 127.0 miles, practically the same at this range.

Measurements

Miles
127.0
Kilometers
204.5
Nautical miles
110.4
Bearing from Davenport
90.4° E
Bearing arriving at Joliet
92.1°
Bearing from Joliet
272.1° W

Halfway between Davenport and Joliet

The great-circle midpoint is at 41.543382, -89.375571 (41°32'36.17"N 89°22'32.06"W). The nearest incorporated place of 1,000 or more people is Walnut, IL, with 1,265 residents, 11.2 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, Davenport gets 15 h 12 min of daylight and Joliet 15 h 11 min; on December 21, 9 h 10 min and 9 h 10 min. The two sit at nearly the same latitude, so their day lengths match closely all year.

Population compared

Joliet has 1.5 times the population of Davenport. From July 2020 to July 2024, Davenport changed by -0.7% and Joliet by +1.0%. The trip crosses from Iowa into Illinois.

  1. 01Davenport, IA100,938 (-0.7%)
  2. 02Joliet, IL151,837 (+1.0%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Davenport from Joliet?

127.0 miles, 204.5 km or 110.4 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is Joliet from Davenport?

E. The great-circle path leaves Davenport on a bearing of 90.4° and arrives at Joliet on 92.1°. The return trip starts on 272.1°.

What is halfway between Davenport and Joliet?

The midpoint is at 41.543382, -89.375571. The nearest incorporated place of 1,000+ is Walnut, IL, 11.2 miles from it.

Is there a time difference between Davenport and Joliet?

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

Which is bigger, Davenport or Joliet?

Joliet, with 151,837 residents in July 2024 against 100,938 for Davenport, 1.5 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.