Idaho
Distance from Boise City to Nampa
Straight-line distance
16.7mi
Boise City, ID and Nampa, ID are 16.7 miles (26.9 km) apart in a straight line. From Boise City, the shortest path starts out heading W (267°).
- kilometers
- 26.9
- nautical miles
- 14.5
- heading from Boise City
- 267° W
- heading from Nampa
- 86° E
Orange line: great-circle path · ring: midpoint · thin lines: county borders
How far Boise City is from Nampa
The great-circle distance between the Census internal points of Boise City and Nampa is 16.7 miles, 26.9 km or 14.5 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 16.7 miles, practically the same at this range.
Measurements
- Miles
- 16.7
- Kilometers
- 26.9
- Nautical miles
- 14.5
- Bearing from Boise City
- 266.7° W
- Bearing arriving at Nampa
- 266.5°
- Bearing from Nampa
- 86.5° E
Halfway between Boise City and Nampa
The great-circle midpoint is at 43.592271, -116.396370 (43°35'32.18"N 116°23'46.93"W). The nearest incorporated place of 1,000 or more people is Meridian, ID, with 139,740 residents, 1.4 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/Boise, so there is no time difference. On June 21, Boise City gets 15 h 26 min of daylight and Nampa 15 h 26 min; on December 21, 8 h 56 min and 8 h 56 min. The two sit at nearly the same latitude, so their day lengths match closely all year.
Population compared
Boise City has 2.0 times the population of Nampa. From July 2020 to July 2024, Boise City changed by +0.8% and Nampa by +15.7%. Both are in Idaho.
- 01Boise City, ID237,963 (+0.8%)
- 02Nampa, ID117,350 (+15.7%)
Questions people ask
How far is Boise City from Nampa?
16.7 miles, 26.9 km or 14.5 nautical miles along the great circle between the two Census internal points. Road distance is longer.
Which direction is Nampa from Boise City?
W. The great-circle path leaves Boise City on a bearing of 266.7° and arrives at Nampa on 266.5°. The return trip starts on 86.5°.
What is halfway between Boise City and Nampa?
The midpoint is at 43.592271, -116.396370. The nearest incorporated place of 1,000+ is Meridian, ID, 1.4 miles from it.
Is there a time difference between Boise City and Nampa?
Both use America/Boise, so there is no time difference.
Which is bigger, Boise City or Nampa?
Boise City, with 237,963 residents in July 2024 against 117,350 for Nampa, 2.0 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.