Nampa population
Nampa, Idaho had an estimated 120,384 residents on July 1, 2025, the 262nd-largest city in the US. That is up 47.6% since the 2010 Census and up 123.5% since 2000.
- Population, July 2025
- 120,384+19.9% since April 2020
- People per sq mile
- 3,35235.9 sq mi of land
- Median age
- 33.914.5% are 65 or older
- Households with kids
- 36.6%with anyone under 18
Population by year, 2000 to 2025
| Year | Population | Change | Basis |
|---|---|---|---|
| 2025 | 120,384 | +2,807 | Estimate, July 1 |
| 2024 | 117,577 | +2,734 | Estimate, July 1 |
| 2023 | 114,843 | +3,690 | Estimate, July 1 |
| 2022 | 111,153 | +4,564 | Estimate, July 1 |
| 2021 | 106,589 | +6,175 | Estimate, July 1 |
| 2020 | 100,414 | +912 | April 2020 estimates base |
| 2019 | 99,502 | +3,115 | Estimate, July 1 |
| 2018 | 96,387 | +2,583 | Estimate, July 1 |
| 2017 | 93,804 | +2,591 | Estimate, July 1 |
| 2016 | 91,213 | +1,620 | Estimate, July 1 |
| 2015 | 89,593 | +1,639 | Estimate, July 1 |
| 2014 | 87,954 | +1,530 | Estimate, July 1 |
| 2013 | 86,424 | +2,449 | Estimate, July 1 |
| 2012 | 83,975 | +1,232 | Estimate, July 1 |
| 2011 | 82,743 | +1,186 | Estimate, July 1 |
| 2010 | 81,557 | +901 | 2010 Census (April 1) |
| 2009 | 80,656 | +1,324 | Estimate, July 1 |
| 2008 | 79,332 | +2,635 | Estimate, July 1 |
| 2007 | 76,697 | +3,504 | Estimate, July 1 |
| 2006 | 73,193 | +3,830 | Estimate, July 1 |
| 2005 | 69,363 | +3,227 | Estimate, July 1 |
| 2004 | 66,136 | +2,768 | Estimate, July 1 |
| 2003 | 63,368 | +2,967 | Estimate, July 1 |
| 2002 | 60,401 | +2,865 | Estimate, July 1 |
| 2001 | 57,536 | +3,672 | Estimate, July 1 |
| 2000 | 53,864 | April 2000 estimates base |
Year-to-year changes across 2010 and 2020 mix census counts with estimates, so small jumps at those years are partly method changes.
Frequently asked questions
What is the population of Nampa in 2025?
The Census Bureau estimates Nampa had 120,384 residents on July 1, 2025, making it the 262nd-largest city in the US.
Is Nampa growing?
Yes. Nampa has grown 47.6% since the 2010 Census (81,557 people), and grown 19.9% since 2020.
What was the population of Nampa in 2000?
About 53,864 (the Census Bureau's April 2000 estimates base). By the 2010 Census it was 81,557.
How dense is Nampa?
Nampa has about 3,352 people per square mile of land (35.9 square miles).
More about Nampa
See cost of living, jobs and commutes in Nampa, Nampa weather by month, or every Nampa ZIP code. For the biggest cities in the country, see the largest US cities.