Aurora: Demographics & People
394,432 people call Aurora home, in 145,310 households. Population grew 1.1% from 390,201 (2022) to 394,432 (2024). Median age 35.3 years. (2.0y younger than Arapahoe County). Children under 18 are 24% of the population. Population is 41% White (non-Hispanic) and 31% Hispanic or Latino. The community is highly diverse (Simpson index 0.65). 65% of households are family-led. County is gaining 2,834 residents per year (2022-2023). County health: 34% adult obesity, 15% smoke.
- 2.7 people per household (vs Colorado avg 2.5).
- 35% non-family households (singles, roommates) (vs Colorado 38%).
- 57 dependents per 100 working-age (youth + seniors / 18-64) (vs Colorado 58).
Population & Trend
Population grew 1.1% from 390,201 (2022) to 394,432 (2024) — about 1.8× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~398,703 (extrapolated at 0.5%/yr trend). Census Bureau Vintage estimate: 404,426.
| Census data vintage | 2024 |
|---|---|
| Population | 519,572 people |
| Annual growth rate · Population change | 1.1% |
| Annual growth rate · Population (2022) | 390,201 |
| Annual growth rate · Population (2024) | 394,432 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | growing |
| Population | 394,432 people (vs Colorado 108,201) |
| Population Estimate | 404,426 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 35.3y is 3.6 years younger than the U.S. median (38.9y). Children under 18 make up 24% — above the U.S. share of ~22%.
| Age Summary · Median age | 35.3 years (vs Colorado 35.7y) |
|---|---|
| Age Summary · Children Pct | 23.9% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 394,432 |
| Age Summary · Under 18 | 94,130 |
| Age Summary · 18 To 34 | 101,251.0× |
| Age Summary · 35 To 64 | 150,055.0× |
| Age Summary · 65 Plus | 48,996 |
| Population under 18 | 94,130 |
| Median age | 35.3 years (vs Colorado 35.7y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 394,432 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.65 (0 = single group, 1 = perfectly even distribution); this is read as highly diverse.
| White residents | 191,887 |
|---|---|
| Black residents | 61,599 |
| Asian residents | 23,350 |
| Hispanic or Latino residents | 119,603 |
| Diversity Index · Diversity index (Simpson) | 64.7% |
| Diversity Index · Diversity label | highly diverse |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 48.4% |
| Asian population | 6.0% (vs Colorado 3.3%) |
| Black population | 15.3% (vs Colorado 2.0%) |
| Hispanic or Latino population | 31.4% (vs Colorado 22.6%) |
| White (non-Hispanic) population | 40.9% (vs Colorado 65.2%) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Ancestry
Self-reported ancestry from Census ACS — what residents report as their ethnic origin, separate from race. Counts can exceed population because people can list multiple ancestries.
Top (8)
Citizenship & Origin
Where residents were born and their citizenship status (Census ACS). 2.0% are foreign-born — below the U.S. average of 13.9%. 22% have naturalized to U.S. citizenship.
| Residents born in this state | 153,663 |
|---|---|
| Residents born in another state | 144,802 |
| Share born in this state | 39.0% |
| Share born in another state | 61.0% |
| Native-born U.S. citizens | 36.7% |
| Foreign-born residents | 2.0% |
| Naturalized citizens | 22.4% |
| Total foreign-born residents | 81,518 |
| From Europe | 5,762 |
| From Asia | 59 |
| From Africa | 19,049 |
| From Latin America | 236 |
| Census Foreign Born · Caribbean | 948 |
| Census Foreign Born · South America | 12 |
Households & Family Composition
145,310 households. Averaging 2.7 people each — larger than the U.S. average of 2.5. 65% are family households — near the U.S. share of ~65%. Of 92,383 families, 30% are married couples with children.
| Children under 18 | 94,819 |
|---|---|
| Total families | 92,383 |
| Married couples with children | 27,863 |
| Single-parent households | 4,531 |
| Average household size | 2.71 |
| Women who gave birth (past year) | 13.5% |
| Grandparents living with grandchildren | 6,995 |
| Grandparents responsible for grandchildren | 3,197 |
| Family households | 93,824 households (vs Colorado 26,135) |
| Households that are families | 64.6% (vs Colorado 62.3%) |
| Total households | 145,310 households (vs Colorado 42,233) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 16.7% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is gaining 2,834 residents per year on net (IRS migration data).
| Moved within the county (past year) | 16.7% |
|---|---|
| Migration · People moving in (annual) | 523,542 |
| Migration · People moving out (annual) | 520,708 |
| Migration · Net migration (in − out) | 2,834 |
| Migration · Population growing | Yes |
| Migration · Year | 2022-2023 |
Sources: IRS SOI Migration 2021-2022 · Refreshed 2026-04-12
Disability
Census ACS measures self-reported functional limitations — vision, hearing, mobility, cognitive, self-care, or independent-living. The U.S. baseline disability rate is about 12–13%; rates trend higher with median age.
| Residents with a disability | 20,939 |
|---|---|
| Disability rate | 5.5% |
Group Quarters
Group quarters are non-household living arrangements counted by the Census — college dormitories, nursing homes, military barracks, group homes, correctional facilities, and similar institutional or shared housing. 2,565 residents live in group quarters (0.7% of population).
| Living in group quarters | 2,565 |
|---|
Veterans
| Veterans Services · Total count | 1 |
|---|
Sources: IRS BMF keyword
Other
| Congressional District · District | 806 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 08001 |
| Cdc Birth Rate · State Fips | 08 |
| Cdc Birth Rate · County Fips | 001 |
| Cdc Birth Rate · County | Adams |
| Cdc Birth Rate · Birth Rate | 18.2% |
| Cdc Birth Rate · Lower Ci | 17.20 |
| Cdc Birth Rate · Upper Ci | 19.30 |
| Cdc Mortality · Fips | 08001 |
| Cdc Mortality · County | Adams County |
| Cdc Mortality · Urban Rural | Large fringe metro |
| Cdc Mortality · Total Deaths 2020 2023 | 15,210 |
| Cdc Vaccination · Fips | 08001 |
| Cdc Vaccination · County | Adams County |
| Cdc Vaccination · Dose1 Pop Pct | 78.3% |
| Cdc Vaccination · Series Complete Pct | 71.8% |
| Cdc Vaccination · Booster Pct | 53.8% |
| Cdc Vaccination · Population 2019 | 517,421 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 10 |
| Family Score · Schools | 107 |
| Family Score · Childcare Centers | 127 |
| Family Score · Youth Sports Orgs | 3 |
| Family Score · Children Pct | 23.9% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 394,432, growing, family-oriented, upper-middle, mixed |
| Town Summary · Population | 394,432 people (vs Colorado 108,201) |
| Town Summary · County | Adams County |
Sources: NCES school congressional district assignment · federal dataset cascade