Idaho to Utah
Distance from Nampa to West Valley City
Straight-line distance
307.2mi
Nampa, ID and West Valley City, UT are 307.2 miles (494.4 km) apart in a straight line. From Nampa, the shortest path starts out heading SE (129°).
- kilometers
- 494.4
- nautical miles
- 266.9
- heading from Nampa
- 129° SE
- heading from West Valley City
- 312° NW
Orange line: great-circle path · ring: midpoint · thin lines: county borders
How far Nampa is from West Valley City
The great-circle distance between the Census internal points of Nampa and West Valley City is 307.2 miles, 494.4 km or 266.9 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 307.2 miles, 58 meters longer.
Measurements
- Miles
- 307.2
- Kilometers
- 494.4
- Nautical miles
- 266.9
- Bearing from Nampa
- 129.1° SE
- Bearing arriving at West Valley City
- 132.1°
- Bearing from West Valley City
- 312.1° NW
Halfway between Nampa and West Valley City
The great-circle midpoint is at 42.159226, -114.235273 (42°09'33.21"N 114°14'6.98"W). The nearest incorporated place of 1,000 or more people is Hansen, ID, with 1,118 residents, 25.9 miles from the midpoint. To find towns near the midpoint of any two places, use the halfway tool.
Time zones and daylight
Nampa uses America/Boise and West Valley City uses America/Denver; West Valley City is the same clock time all year. On June 21, Nampa gets 15 h 26 min of daylight and West Valley City 15 h 06 min; on December 21, 8 h 56 min and 9 h 15 min. Nampa is 2.90° farther north, so it has the longer summer days and the shorter winter ones.
Population compared
West Valley City has 1.2 times the population of Nampa. From July 2020 to July 2024, Nampa changed by +15.7% and West Valley City by -1.3%. The trip crosses from Idaho into Utah.
- 01Nampa, ID117,350 (+15.7%)
- 02West Valley City, UT138,144 (-1.3%)
Questions people ask
How far is Nampa from West Valley City?
307.2 miles, 494.4 km or 266.9 nautical miles along the great circle between the two Census internal points. Road distance is longer.
Which direction is West Valley City from Nampa?
SE. The great-circle path leaves Nampa on a bearing of 129.1° and arrives at West Valley City on 132.1°. The return trip starts on 312.1°.
What is halfway between Nampa and West Valley City?
The midpoint is at 42.159226, -114.235273. The nearest incorporated place of 1,000+ is Hansen, ID, 25.9 miles from it.
Is there a time difference between Nampa and West Valley City?
Nampa uses America/Boise and West Valley City uses America/Denver; West Valley City is the same clock time all year.
Which is bigger, Nampa or West Valley City?
West Valley City, with 138,144 residents in July 2024 against 117,350 for Nampa, 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.
- 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.