Demographics · ID

Nampa, ID demographics.

Nampa, ID demographics: 110,319 residents, with a median age of 33.9 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).

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110,319people live in Nampa, at a median age of 33.9 years (American Community Survey 2020–2024, a 5-year average)

Median age 33.9 years — younger than the U.S. median of 38.9.

ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)

In Nampa, the largest race group is White (73.7%); 25.4% of residents are Hispanic or Latino (of any race); 8.4% were born outside the United States.

ACS 2020–2024 · B01001 / B01002

How old is Nampa?

The median age in Nampa is 33.9 years (±0.7), younger than the U.S. median of 38.9 years. The population is 49.6% male and 50.4% female. The largest age band is 5 to 17 at 18.2%.

Under 5

7.0%

5 to 17

18.2%

18 to 24

10.1%

25 to 34

16.5%

35 to 44

13.2%

45 to 54

10.9%

55 to 64

9.7%

65 to 74

8.5%

75 and over

6.0%

Age band	People	Share	± margin
Under 5	7,692	7.0%	±619
5 to 17	20,099	18.2%	±978
18 to 24	11,111	10.1%	±914
25 to 34	18,180	16.5%	±812
35 to 44	14,507	13.2%	±943
45 to 54	11,987	10.9%	±679
55 to 64	10,731	9.7%	±815
65 to 74	9,385	8.5%	±918
75 and over	6,627	6.0%	±614

Median age by sex: 33.2 (male) · 35.0 (female).

Shares may not sum to 100% due to rounding. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B01001 sex by age, B01002 median age) · place-grain · margins of error at the 90% confidence level · methodology →

ACS 2020–2024 · B02001 / B03003

What is the racial and ethnic makeup of Nampa?

The largest race group in Nampa is White at 73.7% of the population. Separately, 25.4% of residents are Hispanic or Latino of any race.Race and Hispanic origin are two different questions on the census form, so their shares are reported separately and are not additive.

White alone

73.7%

Black or African American alone

1.2%

American Indian & Alaska Native alone

1.2%

Asian alone

0.7%

Native Hawaiian & Pacific Islander alone

0.3%

Some other race alone

9.0%

Two or more races

14.0%

Race (alone, or two or more)	People	Share	± margin
White alone	81,276	73.7%	±2,127
Black or African American alone	1,356	1.2%	±322
American Indian & Alaska Native alone	1,282	1.2%	±454
Asian alone	745	0.7%	±225
Native Hawaiian & Pacific Islander alone	320	0.3%	±366 · low precision
Some other race alone	9,880	9.0%	±1,343
Two or more races	15,460	14.0%	±1,762
Hispanic or Latino (of any race)	28,059	25.4%	±1,661

Race shares may not sum to 100% due to rounding; race and Hispanic origin are separate questions and are not additive. Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B02001 race, B03003 Hispanic or Latino origin) · place-grain · margins of error at the 90% confidence level · methodology →

ACS 2020–2024 · B11001 / B25010

How many households are in Nampa?

Nampa has 39,134 households. 71.5% are family households and 19.3% are people living alone. The average household holds 2.76 people.

Total households

39,134

ACS 2020–2024 5-yr · B11001

Avg household size

2.76

ACS 2020–2024 5-yr · B25010 · ±0.05

Family households

71.5%

Share of all households · B11001

Living alone

19.3%

Share of all households · B11001

Household type	Households	± margin
Total households	39,134	±752
Family households	27,979	±976
Nonfamily households	11,155	±807
Householder living alone	7,560	±612

Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B11001 household type, B25010 average household size) · place-grain · methodology →

ACS 2020–2024 · B05002 / C16001

Where are Nampa residents from?

8.4% of Nampa residents were born outside the United States. 82.4% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (14.6%).

Measure	Value	Source / grain
Foreign-born share	8.4%	9,225 people · B05002
Speak only English at home (age 5+)	82.4%	C16001
Top non-English language at home	14.6%	Spanish · 14,939 speakers · C16001

Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B05002 place of birth, C16001 language spoken at home) · place-grain · methodology →

ACS 2020–2024 · B15003

What share of Nampa has a college degree?

23.4% of adults age 25 and over in Nampa hold a bachelor's degree or higher (the U.S. share is about 35%).

Measure	Value	Source / grain
Bachelor's degree or higher (age 25+)	23.4%	B15003 lines 22–25 over line 1 · place-grain

Source: U.S. Census Bureau, ACS 5-Year 2020–2024 (B15003 educational attainment, population 25+) · place-grain · methodology →

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Sources · provenance

Datasets on this page.

The GEOID for Nampa is 1656260. Every figure on this page is a place-grain American Community Survey 5-Year 2020–2024 estimate (ACS 5-Year Estimates 2020-2024 (released 2026-01-29)) shown with its margin of error. Full per-dataset detail: /sources/.