California
Distance from Ontario to Pomona
Straight-line distance
9.1mi
Ontario, CA and Pomona, CA are 9.1 miles (14.6 km) apart in a straight line. From Ontario, the shortest path starts out heading W (279°).
- kilometers
- 14.6
- nautical miles
- 7.9
- heading from Ontario
- 279° W
- heading from Pomona
- 99° E
Orange line: great-circle path · ring: midpoint · thin lines: county borders
How far Ontario is from Pomona
The great-circle distance between the Census internal points of Ontario and Pomona is 9.1 miles, 14.6 km or 7.9 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 9.1 miles, practically the same at this range.
Measurements
- Miles
- 9.1
- Kilometers
- 14.6
- Nautical miles
- 7.9
- Bearing from Ontario
- 279.2° W
- Bearing arriving at Pomona
- 279.1°
- Bearing from Pomona
- 99.1° E
Halfway between Ontario and Pomona
The great-circle midpoint is at 34.048075, -117.682740 (34°02'53.07"N 117°40'57.87"W). The nearest incorporated place of 1,000 or more people is Montclair, CA, with 37,650 residents, 1.9 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/Los_Angeles, so there is no time difference. On June 21, Ontario gets 14 h 26 min of daylight and Pomona 14 h 26 min; on December 21, 9 h 53 min and 9 h 53 min. The two sit at nearly the same latitude, so their day lengths match closely all year.
Population compared
Ontario has 1.3 times the population of Pomona. From July 2020 to July 2024, Ontario changed by +5.4% and Pomona by -2.1%. Both are in California.
- 01Ontario, CA185,285 (+5.4%)
- 02Pomona, CA147,966 (-2.1%)
Questions people ask
How far is Ontario from Pomona?
9.1 miles, 14.6 km or 7.9 nautical miles along the great circle between the two Census internal points. Road distance is longer.
Which direction is Pomona from Ontario?
W. The great-circle path leaves Ontario on a bearing of 279.2° and arrives at Pomona on 279.1°. The return trip starts on 99.1°.
What is halfway between Ontario and Pomona?
The midpoint is at 34.048075, -117.682740. The nearest incorporated place of 1,000+ is Montclair, CA, 1.9 miles from it.
Is there a time difference between Ontario and Pomona?
Both use America/Los_Angeles, so there is no time difference.
Which is bigger, Ontario or Pomona?
Ontario, with 185,285 residents in July 2024 against 147,966 for Pomona, 1.3 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.
- 01Census 2024 Gazetteer, places
- 02Census Vintage 2024 subcounty population estimates
- 03SunCalc library (Vladimir Agafonkin), algorithms after Jean Meeus
- 04IANA time zone database (clock times and daylight saving rules)
How every number is computed: methodology. Spotted a wrong figure? Report an error.