Erie: Demographics & People
Census counts 33,808 people in Erie, in 11,748 households. Population grew 5.9% from 31,927 (2022) to 33,808 (2024). Median age 37.6 years. (2.3y older than Weld County; 1.9y older than Colorado). Children under 18 are 29% of the population. Population is 77% White (non-Hispanic) and 10% Hispanic or Latino. The community is somewhat diverse (Simpson index 0.30). 79% of households are family-led. County is losing 4,788 residents per year (2022-2023). County health: 19% adult obesity, 10% smoke.
- 2.9 people per household (vs Colorado avg 2.5).
- 21% non-family households (singles, roommates) (vs Colorado 38%).
- 62 dependents per 100 working-age (youth + seniors / 18-64) (vs Colorado 58).
Population & Trend
Population grew 5.9% from 31,927 (2022) to 33,808 (2024) — about 9.8× the recent U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~35,828 (extrapolated at 2.9%/yr trend). Census Bureau Vintage estimate: 38,637.
| Census data vintage | 2024 |
|---|---|
| Population | 330,758 people |
| Annual growth rate · Population change | 5.9% |
| Annual growth rate · Population (2022) | 31,927 |
| Annual growth rate · Population (2024) | 33,808 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | booming |
| Population | 33,808 people (vs Colorado 108,201) |
| Population Estimate | 38,637 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 37.6y is 1.3 years younger than the U.S. median (38.9y). Children under 18 make up 29% — above the U.S. share of ~22%.
| Age Summary · Median age | 37.6 years (vs Colorado 35.7y) |
|---|---|
| Age Summary · Children Pct | 28.6% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 33,808 |
| Age Summary · Under 18 | 9,659 |
| Age Summary · 18 To 34 | 5,363.0× |
| Age Summary · 35 To 64 | 15,448.0× |
| Age Summary · 65 Plus | 3,338 |
| Population under 18 | 9,659 |
| Median age | 37.6 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 33,808 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.30 (0 = single group, 1 = perfectly even distribution); this is read as somewhat diverse.
| White residents | 26,553 |
|---|---|
| Black residents | 41 |
| Asian residents | 2,068 |
| Hispanic or Latino residents | 3,306 |
| Diversity Index · Diversity index (Simpson) | 29.5% |
| Diversity Index · Diversity label | somewhat diverse |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 83.1% |
| Asian population | 6.1% (vs Colorado 3.3%) |
| Black population | 0.2% (vs Colorado 2.0%) |
| Hispanic or Latino population | 10.4% (vs Colorado 22.6%) |
| White (non-Hispanic) population | 77.2% (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). 1.6% are foreign-born — below the U.S. average of 13.9%. 9% have naturalized to U.S. citizenship.
| Residents born in this state | 13,289 |
|---|---|
| Residents born in another state | 17,035 |
| Share born in this state | 39.3% |
| Share born in another state | 60.7% |
| Native-born U.S. citizens | 50.4% |
| Foreign-born residents | 1.6% |
| Naturalized citizens | 8.7% |
| Total foreign-born residents | 2,689 |
| From Europe | 804 |
| From Asia | 48 |
| From Africa | 1,330 |
Households & Family Composition
11,748 households. Averaging 2.9 people each — larger than the U.S. average of 2.5. 79% are family households — above the U.S. share of ~65%. Of 9,005 families, 47% are married couples with children.
| Children under 18 | 9,511 |
|---|---|
| Total families | 9,005 |
| Married couples with children | 4,247 |
| Single-parent households | 130 |
| Average household size | 2.87 |
| Women who gave birth (past year) | 9.6% |
| Grandparents living with grandchildren | 73 |
| Grandparents responsible for grandchildren | 36 |
| Family households | 9,285 households (vs Colorado 26,135) |
| Households that are families | 79.0% (vs Colorado 62.3%) |
| Total households | 11,748 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. 13.6% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 4,788 residents per year on net (IRS migration data).
| Moved within the county (past year) | 13.6% |
|---|---|
| Migration · People moving in (annual) | 303,289 |
| Migration · People moving out (annual) | 308,077 |
| Migration · Net migration (in − out) | -4,788 |
| 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 | 889 |
|---|---|
| Disability rate | 2.9% |
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. 12 residents live in group quarters (0.0% of population).
| Living in group quarters | 12 |
|---|
Other
| Congressional District · District | 802 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 08013 |
| Cdc Birth Rate · State Fips | 08 |
| Cdc Birth Rate · County Fips | 013 |
| Cdc Birth Rate · County | Boulder |
| Cdc Birth Rate · Birth Rate | 5.3% |
| Cdc Birth Rate · Lower Ci | 4.70 |
| Cdc Birth Rate · Upper Ci | 6.00 |
| Cdc Mortality · Fips | 08013 |
| Cdc Mortality · County | Boulder County |
| Cdc Mortality · Urban Rural | Medium metro |
| Cdc Mortality · Total Deaths 2020 2023 | 9,039 |
| Cdc Vaccination · Fips | 08013 |
| Cdc Vaccination · County | Boulder County |
| Cdc Vaccination · Dose1 Pop Pct | 91.1% |
| Cdc Vaccination · Series Complete Pct | 82.8% |
| Cdc Vaccination · Booster Pct | 69.1% |
| Cdc Vaccination · Population 2019 | 326,196 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 9.40 |
| Family Score · Schools | 9 |
| Family Score · Childcare Centers | 13 |
| Family Score · Children Pct | 28.6% |
| Family Score · Rating | excellent |
| Town Summary · Key Facts | population 33,808, booming, family-oriented, affluent, white collar |
| Town Summary · Population | 33,808 people (vs Colorado 108,201) |
| Town Summary · County | Boulder County |
Sources: NCES school congressional district assignment · federal dataset cascade