Montrose: Demographics & People
Census counts 255 people in Montrose, in 95 households. Population shrank 7.6% from 276 (2022) to 255 (2024). Median age 40.5 years. (0.5y older than Effingham County; 2.8y older than Illinois). Children under 18 are 20% of the population. Population is 93% White (non-Hispanic) and 5% Hispanic or Latino. The community is relatively homogeneous (Simpson index 0.19). 79% of households are family-led. County is losing 311 residents per year (2022-2023). County health: 37% adult obesity, 16% smoke.
- 2.7 people per household (vs Illinois avg 2.5).
- 21% non-family households (singles, roommates) (vs Illinois 38%).
- 73 dependents per 100 working-age (youth + seniors / 18-64) (vs Illinois 64).
Population & Trend
Population shrank 7.6% from 276 (2022) to 255 (2024). Estimated 2026 population: ~235 (extrapolated at -3.8%/yr trend). Census Bureau Vintage estimate: 211.
| Census data vintage | 2024 |
|---|---|
| Population | 10,450 people |
| Annual growth rate · Population change | -7.6% |
| Annual growth rate · Population (2022) | 276 |
| Annual growth rate · Population (2024) | 255 |
| Annual growth rate · Trend category | shrinking |
| Population | 255 people (vs Illinois 39,460) |
| Population Estimate | 211 |
Sources: Census ACS 5-Year 2023, Table B01003 · Refreshed 2026-04-12
Age Distribution
Median age 40.5y is 1.6 years older than the U.S. median (38.9y). Children under 18 make up 20% — below the U.S. share of ~22%.
| Age Summary · Median age | 40.5 years (vs Illinois 37.7y) |
|---|---|
| Age Summary · Children Pct | 20.0% |
| Age Summary · Character | established |
| Age Summary · Total Pop | 255 |
| Age Summary · Under 18 | 51 |
| Age Summary · 18 To 34 | 69.0× |
| Age Summary · 35 To 64 | 78.0× |
| Age Summary · 65 Plus | 57 |
| Population under 18 | 51 |
| Median age | 40.5 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 255 residents, race / ethnicity breaks down by Census ACS counts (a person can identify with one or more groups). The Simpson diversity index is 0.19 (0 = single group, 1 = perfectly even distribution); this is read as relatively homogeneous.
| White residents | 253 |
|---|---|
| Black residents | 2 |
| Hispanic or Latino residents | 27 |
| Diversity Index · Diversity index (Simpson) | 18.6% |
| Diversity Index · Diversity label | relatively homogeneous |
| Diversity Index · Groups counted | 3 |
| Diversity Index · Largest group share | 89.7% |
| Black population | 0.4% (vs Illinois 9.3%) |
| Hispanic or Latino population | 4.7% (vs Illinois 17.6%) |
| White (non-Hispanic) population | 93.3% (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).
| Residents born in this state | 217 |
|---|---|
| Residents born in another state | 35 |
| Share born in this state | 85.1% |
| Share born in another state | 14.9% |
| Native-born U.S. citizens | 13.7% |
| Naturalized citizens | 1.2% |
| Total foreign-born residents | 2 |
| From Europe | 2 |
Households & Family Composition
95 households. Averaging 2.6 people each — matches the U.S. average of 2.5. 79% are family households — above the U.S. share of ~65%. Of 76 families, 37% are married couples with children.
| Children under 18 | 54 |
|---|---|
| Total families | 76 |
| Married couples with children | 28 |
| Single-parent households | 5 |
| Average household size | 2.56 |
| Women who gave birth (past year) | 14.9% |
| Grandparents living with grandchildren | 174 |
| Grandparents responsible for grandchildren | 76 |
| Family households | 75 households (vs Illinois 9,709) |
| Households that are families | 78.9% (vs Illinois 62.4%) |
| Total households | 95 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. 25.7% moved within the county in the past year — the U.S. baseline is roughly 8–10%. The surrounding county is losing 311 residents per year on net (IRS migration data).
| Moved within the county (past year) | 25.7% |
|---|---|
| Migration · People moving in (annual) | 9,557 |
| Migration · People moving out (annual) | 9,868 |
| Migration · Net migration (in − out) | -311 |
| 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 | 11 |
|---|---|
| Disability rate | 4.7% |
Other
| Congressional District · District | 12 |
|---|---|
| Congressional District · Formatted | IL-12 |
| Congressional District · Congress | 118th |
| Cdc Birth Rate · Fips | 17035 |
| Cdc Birth Rate · State Fips | 17 |
| Cdc Birth Rate · County Fips | 035 |
| Cdc Birth Rate · County | Cumberland |
| Cdc Birth Rate · Birth Rate | 18.1% |
| Cdc Birth Rate · Lower Ci | 12.50 |
| Cdc Birth Rate · Upper Ci | 25.20 |
| Cdc Mortality · Fips | 17035 |
| Cdc Mortality · County | Cumberland County |
| Cdc Mortality · Urban Rural | Micropolitan |
| Cdc Mortality · Total Deaths 2020 2023 | 330 |
| Cdc Vaccination · Fips | 17035 |
| Cdc Vaccination · County | Cumberland County |
| Cdc Vaccination · Dose1 Pop Pct | 43.2% |
| Cdc Vaccination · Series Complete Pct | 40.1% |
| Cdc Vaccination · Booster Pct | 51.2% |
| Cdc Vaccination · Population 2019 | 10,766 |
| Cdc Vaccination · Metro Status | Non-metro |
| Family Score · Score | 4.50 |
| Family Score · Schools | 7 |
| Family Score · Children Pct | 20.0% |
| Family Score · Rating | fair |
| Town Summary · Key Facts | population 255, shrinking, established, middle-class, blue collar |
| Town Summary · Population | 255 people (vs Illinois 39,460) |
| Town Summary · County | Cumberland County |
Sources: Census place-to-CD118 crosswalk (place_fips) · federal dataset cascade