Rochelle: Demographics & People
Census counts 9,529 people in Rochelle, in 3,759 households. Population grew 0.6% from 9,477 (2022) to 9,529 (2024). Median age 36.0 years. (6.3y younger than Ogle County; 1.7y younger than Illinois). Children under 18 are 21% of the population. Population is 65% White (non-Hispanic) and 27% Hispanic or Latino. The community is moderately diverse (Simpson index 0.43). 60% of households are family-led. County is losing 669 residents per year (2022-2023). County health: 38% adult obesity, 18% smoke.
- 2.5 people per household (vs Illinois avg 2.5).
- 40% non-family households (singles, roommates) (vs Illinois 38%).
- 57 dependents per 100 working-age (youth + seniors / 18-64) (vs Illinois 64).
Population & Trend
Population grew 0.6% from 9,477 (2022) to 9,529 (2024) — close to the U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~9,581 (extrapolated at 0.3%/yr trend). Census Bureau Vintage estimate: 9,651.
| Census data vintage | 2024 |
|---|---|
| Population | 34,145 people |
| Annual growth rate · Population change | 0.6% |
| Annual growth rate · Population (2022) | 9,477 |
| Annual growth rate · Population (2024) | 9,529 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | stable |
| Population | 9,529 people (vs Illinois 39,460) |
| Population Estimate | 9,651 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 36.0y is 2.9 years younger than the U.S. median (38.9y). Children under 18 make up 21% — below the U.S. share of ~22%.
| Age Summary · Median age | 36.0 years (vs Illinois 37.7y) |
|---|---|
| Age Summary · Children Pct | 20.9% |
| Age Summary · Character | family-oriented |
| Age Summary · Total Pop | 9,529 |
| Age Summary · Under 18 | 1,989 |
| Age Summary · 18 To 34 | 2,640.0× |
| Age Summary · 35 To 64 | 3,426.0× |
| Age Summary · 65 Plus | 1,474 |
| Population under 18 | 1,989 |
| Median age | 36.0 years (vs Illinois 37.7y) |
Sources: Census ACS 5-Year 2024 — place-level B01001 query · Census ACS 5-Year 2023 · Refreshed 2026-04-29
Race, Ethnicity & Diversity
Of 9,529 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.43 (0 = single group, 1 = perfectly even distribution); this is read as moderately diverse.
| White residents | 6,991 |
|---|---|
| Black residents | 378 |
| Asian residents | 74 |
| Hispanic or Latino residents | 2,296 |
| Diversity Index · Diversity index (Simpson) | 42.8% |
| Diversity Index · Diversity label | moderately diverse |
| Diversity Index · Groups counted | 4 |
| Diversity Index · Largest group share | 71.8% |
| Asian population | 1.2% (vs Illinois 6.1%) |
| Black population | 4.3% (vs Illinois 9.3%) |
| Hispanic or Latino population | 26.9% (vs Illinois 17.6%) |
| White (non-Hispanic) population | 64.7% (vs Illinois 54.8%) |
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). 0.2% are foreign-born — below the U.S. average of 13.9%. 10% have naturalized to U.S. citizenship.
| Residents born in this state | 7,345 |
|---|---|
| Residents born in another state | 1,224 |
| Share born in this state | 77.1% |
| Share born in another state | 22.9% |
| Native-born U.S. citizens | 12.8% |
| Foreign-born residents | 0.2% |
| Naturalized citizens | 9.9% |
| Total foreign-born residents | 498 |
| From Europe | 7 |
| From Africa | 8 |
Households & Family Composition
3,759 households. Averaging 2.4 people each — smaller than the U.S. average of 2.5. 60% are family households — below the U.S. share of ~65%. Of 2,180 families, 20% are married couples with children.
| Children under 18 | 1,717 |
|---|---|
| Total families | 2,180 |
| Married couples with children | 442 |
| Single-parent households | 171 |
| Average household size | 2.37 |
| Women who gave birth (past year) | 16.9% |
| Grandparents living with grandchildren | 114 |
| Grandparents responsible for grandchildren | 25 |
| Family households | 2,248 households (vs Illinois 9,709) |
| Households that are families | 59.8% (vs Illinois 62.4%) |
| Total households | 3,759 households (vs Illinois 14,867) |
Sources: Census ACS 5-Year 2023 · Refreshed 2026-04-12
Residential Stability & Migration
How long residents have lived here and where they came from. 6.7% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 669 residents per year on net (IRS migration data).
| Moved within the county (past year) | 6.7% |
|---|---|
| Migration · People moving in (annual) | 29,916 |
| Migration · People moving out (annual) | 30,585 |
| Migration · Net migration (in − out) | -669 |
| 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 | 679 |
|---|---|
| Disability rate | 7.3% |
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. 133 residents live in group quarters (1.4% of population).
| Living in group quarters | 133 |
|---|
Other
| Congressional District · District | 16 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 17103 |
| Cdc Birth Rate · State Fips | 17 |
| Cdc Birth Rate · County Fips | 103 |
| Cdc Birth Rate · County | Lee |
| Cdc Birth Rate · Birth Rate | 14.8% |
| Cdc Birth Rate · Lower Ci | 11.60 |
| Cdc Birth Rate · Upper Ci | 18.70 |
| Cdc Mortality · Fips | 17103 |
| Cdc Mortality · County | Lee County |
| Cdc Mortality · Urban Rural | Micropolitan |
| Cdc Mortality · Total Deaths 2020 2023 | 1,162 |
| Cdc Vaccination · Fips | 17103 |
| Cdc Vaccination · County | Lee County |
| Cdc Vaccination · Dose1 Pop Pct | 64.9% |
| Cdc Vaccination · Series Complete Pct | 60.8% |
| Cdc Vaccination · Booster Pct | 59.5% |
| Cdc Vaccination · Population 2019 | 34,096 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 5.10 |
| Family Score · Schools | 6 |
| Family Score · Childcare Centers | 2 |
| Family Score · Youth Sports Orgs | 1 |
| Family Score · Children Pct | 20.9% |
| Family Score · Rating | good |
| Town Summary · Key Facts | population 9,529, stable, family-oriented, middle-class, mixed |
| Town Summary · Population | 9,529 people (vs Illinois 39,460) |
| Town Summary · County | Lee County |
Sources: NCES school congressional district assignment · federal dataset cascade