Illinois to Missouri

Distance from Peoria to St. Louis

Straight-line distance

149.9mi

Peoria, IL and St. Louis, MO are 149.9 miles (241.3 km) apart in a straight line. From Peoria, the shortest path starts out heading SSW (193°).

kilometers
241.3
nautical miles
130.3
heading from Peoria
193° SSW
heading from St. Louis
13° NNE
PeoriaSt. Louis

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

How far Peoria is from St. Louis

The great-circle distance between the Census internal points of Peoria and St. Louis is 149.9 miles, 241.3 km or 130.3 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 150.0 miles, practically the same at this range.

Measurements

Miles
149.9
Kilometers
241.3
Nautical miles
130.3
Bearing from Peoria
193.1° SSW
Bearing arriving at St. Louis
192.7°
Bearing from St. Louis
12.7° NNE

Halfway between Peoria and St. Louis

The great-circle midpoint is at 39.694072, -89.935708 (39°41'38.66"N 89°56'8.55"W). The nearest incorporated place of 1,000 or more people is New Berlin, IL, with 1,359 residents, 2.5 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, Peoria gets 15 h 06 min of daylight and St. Louis 14 h 52 min; on December 21, 9 h 15 min and 9 h 28 min. Peoria is 2.12° farther north, so it has the longer summer days and the shorter winter ones.

Population compared

St. Louis has 2.5 times the population of Peoria. From July 2020 to July 2024, Peoria changed by -1.1% and St. Louis by -6.9%. The trip crosses from Illinois into Missouri.

  1. 01Peoria, IL111,696 (-1.1%)
  2. 02St. Louis, MO279,695 (-6.9%)
July 1, 2024 population and change since July 2020, Census Vintage 2024.

Questions people ask

How far is Peoria from St. Louis?

149.9 miles, 241.3 km or 130.3 nautical miles along the great circle between the two Census internal points. Road distance is longer.

Which direction is St. Louis from Peoria?

SSW. The great-circle path leaves Peoria on a bearing of 193.1° and arrives at St. Louis on 192.7°. The return trip starts on 12.7°.

What is halfway between Peoria and St. Louis?

The midpoint is at 39.694072, -89.935708. The nearest incorporated place of 1,000+ is New Berlin, IL, 2.5 miles from it.

Is there a time difference between Peoria and St. Louis?

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

Which is bigger, Peoria or St. Louis?

St. Louis, with 279,695 residents in July 2024 against 111,696 for Peoria, 2.5 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.