Fox River Grove: Demographics & People
Fox River Grove's population stands at 4,523 people, in 1,685 households. Population grew 0.5% from 4,501 (2022) to 4,523 (2024). Median age 43.0 years. (2.3y older than McHenry County; 5.3y older than Illinois). Children under 18 are 23% of the population. Population is 74% White (non-Hispanic) and 22% Hispanic or Latino. The community is somewhat diverse (Simpson index 0.29). 77% of households are family-led. County is losing 10,629 residents per year (2022-2023). County health: 32% adult obesity, 13% smoke.
- 2.7 people per household (vs Illinois avg 2.5).
- 23% non-family households (singles, roommates) (vs Illinois 38%).
- 58 dependents per 100 working-age (youth + seniors / 18-64) (vs Illinois 64).
Population & Trend
Population grew 0.5% from 4,501 (2022) to 4,523 (2024) — close to the U.S. annual rate of ~0.6%/yr. Estimated 2026 population: ~4,545 (extrapolated at 0.2%/yr trend). Census Bureau Vintage estimate: 4,574.
| Census data vintage | 2024 |
|---|---|
| Population | 714,342 people |
| Annual growth rate · Population change | 0.5% |
| Annual growth rate · Population (2022) | 4,501 |
| Annual growth rate · Population (2024) | 4,523 |
| Annual growth rate · Population growing | Yes |
| Annual growth rate · Trend category | stable |
| Population | 4,523 people (vs Illinois 39,460) |
| Population Estimate | 4,574 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 43.0y is 4.1 years older than the U.S. median (38.9y). Children under 18 make up 23% — near the U.S. share of ~22%.
| Age Summary · Median age | 43.0 years (vs Illinois 37.7y) |
|---|---|
| Age Summary · Children Pct | 22.7% |
| Age Summary · Character | established |
| Age Summary · Total Pop | 4,523 |
| Age Summary · Under 18 | 1,025 |
| Age Summary · 18 To 34 | 828.0× |
| Age Summary · 35 To 64 | 2,033.0× |
| Age Summary · 65 Plus | 637 |
| Population under 18 | 1,025 |
| Median age | 43.0 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 4,523 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.29 (0 = single group, 1 = perfectly even distribution); this is read as somewhat diverse.
| White residents | 3,824 |
|---|---|
| Asian residents | 144 |
| Hispanic or Latino residents | 639 |
| Diversity Index · Diversity index (Simpson) | 29.1% |
| Diversity Index · Diversity label | somewhat diverse |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 83.0% |
| Asian population | 2.3% (vs Illinois 6.1%) |
| Hispanic or Latino population | 21.7% (vs Illinois 17.6%) |
| White (non-Hispanic) population | 74.3% (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). 1.2% are foreign-born — below the U.S. average of 13.9%. 10% have naturalized to U.S. citizenship.
| Residents born in this state | 3,236 |
|---|---|
| Residents born in another state | 771 |
| Share born in this state | 71.5% |
| Share born in another state | 28.5% |
| Native-born U.S. citizens | 17.0% |
| Foreign-born residents | 1.2% |
| Naturalized citizens | 10.2% |
| Total foreign-born residents | 413 |
| From Europe | 190 |
| From Africa | 85 |
Households & Family Composition
1,685 households. Averaging 2.9 people each — larger than the U.S. average of 2.5. 77% are family households — above the U.S. share of ~65%. Of 1,237 families, 43% are married couples with children.
| Children under 18 | 1,074 |
|---|---|
| Total families | 1,237 |
| Married couples with children | 526 |
| Average household size | 2.88 |
| Women who gave birth (past year) | 20.8% |
| Grandparents living with grandchildren | 72 |
| Family households | 1,298 households (vs Illinois 9,709) |
| Households that are families | 77.0% (vs Illinois 62.4%) |
| Total households | 1,685 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. 10.7% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 10,629 residents per year on net (IRS migration data).
| Moved within the county (past year) | 10.7% |
|---|---|
| Migration · People moving in (annual) | 673,084 |
| Migration · People moving out (annual) | 683,713 |
| Migration · Net migration (in − out) | -10,629 |
| 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 | 103 |
|---|---|
| Disability rate | 2.2% |
Other
| Congressional District · District | 6 |
|---|---|
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 17097 |
| Cdc Birth Rate · State Fips | 17 |
| Cdc Birth Rate · County Fips | 097 |
| Cdc Birth Rate · County | Lake |
| Cdc Birth Rate · Birth Rate | 9.8% |
| Cdc Birth Rate · Lower Ci | 9.20 |
| Cdc Birth Rate · Upper Ci | 10.50 |
| Cdc Mortality · Fips | 17097 |
| Cdc Mortality · County | Lake County |
| Cdc Mortality · Urban Rural | Large fringe metro |
| Cdc Mortality · Total Deaths 2020 2023 | 20,260 |
| Cdc Vaccination · Fips | 17097 |
| Cdc Vaccination · County | Lake County |
| Cdc Vaccination · Dose1 Pop Pct | 92.9% |
| Cdc Vaccination · Series Complete Pct | 83.5% |
| Cdc Vaccination · Booster Pct | 56.8% |
| Cdc Vaccination · Population 2019 | 696,535 |
| Cdc Vaccination · Metro Status | Metro |
| Family Score · Score | 2.00 |
| Family Score · Schools | 2 |
| Family Score · Children Pct | 22.7% |
| Family Score · Rating | limited |
| Town Summary · Key Facts | population 4,523, stable, established, affluent, white collar |
| Town Summary · Population | 4,523 people (vs Illinois 39,460) |
| Town Summary · County | Lake County |
Sources: NCES school congressional district assignment · federal dataset cascade