Demographics · CO
Centennial, CO demographics: 108,201 residents, with a median age of 42.0 years, from the U.S. Census Bureau's American Community Survey 2020–2024 (5-year estimates).
108,201people are estimated in Centennial, at a median age of 42.0 years (American Community Survey 2020–2024 period estimate)
Median age 42.0 years — older than the U.S. median of 38.9.
ACS 2020–2024 5-year · ACS 5-Year Estimates 2020-2024 (released 2026-01-29)
In Centennial, the largest race group is White (76.9%); 10.3% of residents are Hispanic or Latino (of any race); 9.9% were born outside the United States.
ACS 2020–2024 · B01001 / B01002
The estimated median age in Centennial is 42.0 years (±0.7), compared with the U.S. estimate of 38.9 ± 0.1 years. These are descriptive comparisons, not significance tests. The population is 49.6% ± 0.7 percentage points male and 50.4% ± 0.7 percentage points female. The largest age band is 5 to 17 at 16.8%.
| Age band | People | Share | ± margin |
|---|---|---|---|
| Under 5 | 5,462 | 5.0% ± 0.5 percentage points | ±526 |
| 5 to 17 | 18,179 | 16.8% ± 0.8 percentage points | ±896 |
| 18 to 24 | 6,548 | 6.1% ± 0.6 percentage points | ±606 |
| 25 to 34 | 13,183 | 12.2% ± 0.7 percentage points | ±802 |
| 35 to 44 | 15,869 | 14.7% ± 0.7 percentage points | ±794 |
| 45 to 54 | 14,497 | 13.4% ± 0.7 percentage points | ±757 |
| 55 to 64 | 13,997 | 12.9% ± 0.7 percentage points | ±768 |
| 65 to 74 | 12,037 | 11.1% ± 0.6 percentage points | ±675 |
| 75 and over | 8,429 | 7.8% ± 0.5 percentage points | ±576 |
Median age by sex: 40.9 (male) · 43.1 (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
The largest race group in Centennial is White at 76.9% of the population. Separately, 10.3% 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.
| Race (alone, or two or more) | People | Share | ± margin |
|---|---|---|---|
| White alone | 83,240 | 76.9% ± 1.4 percentage points | ±1,558 |
| Black or African American alone | 3,118 | 2.9% ± 0.5 percentage points | ±521 |
| American Indian & Alaska Native alone | 306 | 0.3% ± 0.1 percentage points | ±127 |
| Asian alone | 6,894 | 6.4% ± 0.8 percentage points | ±876 |
| Native Hawaiian & Pacific Islander alone | 298 | 0.3% ± 0.2 percentage points | ±193 · low precision |
| Some other race alone | 1,947 | 1.8% ± 0.5 percentage points | ±499 |
| Two or more races | 12,398 | 11.5% ± 1.1 percentage points | ±1,177 |
| Hispanic or Latino (of any race) | 11,106 | 10.3% ± 0.9 percentage points | ±954 |
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
Centennial has 42,233 households. 72.4% are family households and 22.7% are people living alone. The average household holds 2.53 people.
Total households
42,233
ACS 2020–2024 5-yr · B11001
Avg household size
2.53
ACS 2020–2024 5-yr · B25010 · ±0.04
Family households
72.4% ± 0.4 percentage points
Share of all households · B11001
Living alone
22.7% ± 1.7 percentage points
Share of all households · B11001
| Household type | Households | ± margin |
|---|---|---|
| Total households | 42,233 | ±694 |
| Family households | 30,581 | ±529 |
| Nonfamily households | 11,652 | ±717 |
| Householder living alone | 9,574 | ±732 |
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
9.9% of Centennial residents were born outside the United States. 87.5% of residents age 5 and over speak only English at home. The most-spoken non-English language at home is Spanish (4.7%).
| Measure | Value | Source / grain |
|---|---|---|
| Foreign-born share | 9.9% ± 0.9 percentage points | 10,706 people · B05002 |
| Speak only English at home (age 5+) | 87.5% ± 1.2 percentage points | C16001 |
| Top non-English language at home | 4.7% ± 0.8 percentage points | Spanish · 4,804 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
62.6% ± 1.6 percentage points of adults age 25 and over in Centennial hold a bachelor's degree or higher. The U.S. estimate is 35.7%.
| Measure | Value | Source / grain |
|---|---|---|
| Bachelor's degree or higher (age 25+) | 62.6% | 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 →
Sources · provenance
The GEOID for Centennial is 0812815. 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/.