Nampa, Idaho

Nampa population, 2020 to 2024

Nampa added 15,920 residents from July 2020 to July 2024, a change of +15.7%. In the latest year it moved by +2,525. Among 36 Idaho places of 5,000 or more, that growth ranks 11th; the median place changed by +8.3%. The median place of 5,000+ in Idaho has 16,745 people, so Nampa is 7.0 times that size.

Nampa covers 35.92 square miles of land and 0.16 of water, for 3,267 people per square mile of land. The median Idaho place of 5,000+ has 2,389, so Nampa is denser than the typical town.

What county Nampa is in

All of Nampa's residents live in Canyon County, which had 266,892 residents in 2024. Nampa holds 44.0% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Nampa

3 ZIP Code Tabulation Areas (ZCTAs) overlap Nampa by at least 10% of the ZCTA's or the city's land: 83651, 83686, 83687. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Nampa is

The Census internal point of Nampa is at 43.585000, -116.562900. Boise, the capital, is 17.6 miles E in a straight line. The nearest larger place is Meridian, ID (139,740 people), 8.3 miles away. The ground at the internal point is about 753 m (2,470 ft) above sea level.

Daylight in Nampa

At 43.59° N, Nampa gets about 15 h 26 min of daylight around the June solstice and 8 h 56 min around the December solstice, a swing of 6 h 30 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026. Month-by-month sunrise and sunset times are on the Nampa daylight page.

Places near Nampa

The eight nearest incorporated places of 1,000+ in Idaho, measured between internal points. The closest is Caldwell, 6.4 miles away, with 73,088 people.