Montgomery County, Illinois: population and components of change
Source: U.S. Census Bureau, Population Estimates Program, Vintage 2024: County Population Totals and Components of Change 2020-2024 (CO-EST2024-ALLDATA). Figures cover the April 1, 2020 estimates base through July 1, 2024; data fetched 2026-10-30T08:41:21Z.
| Item | Value | As reported |
|---|---|---|
| County | Montgomery County | Montgomery County |
| State | Illinois | Illinois |
| State FIPS code | 17 | 17 |
| County FIPS code | 135 | 135 |
| Census region (code) | 2 | 2 |
| Census division (code) | 3 | 3 |
| Estimates base, April 1, 2020 | 28,321 | 28321 |
| Resident population, July 1, 2020 | 28,242 | 28242 |
| Resident population, July 1, 2021 | 28,128 | 28128 |
| Resident population, July 1, 2022 | 27,971 | 27971 |
| Resident population, July 1, 2023 | 27,756 | 27756 |
| Resident population, July 1, 2024 | 27,615 | 27615 |
| Numeric population change, 2023 to 2024 | -141 | -141 |
| Births, year to July 1, 2024 | 238 | 238 |
| Deaths, year to July 1, 2024 | 364 | 364 |
| Natural change (births minus deaths), year to July 1, 2024 | -126 | -126 |
| International migration, year to July 1, 2024 | 7 | 7 |
| Domestic migration, year to July 1, 2024 | -22 | -22 |
| Residual, year to July 1, 2024 | 0 | 0 |
| Birth rate per 1,000 population, year to July 1, 2024 | 8.5966 | 8.5965577649 |
| Death rate per 1,000 population, year to July 1, 2024 | 13.1477 | 13.147676582 |
| Natural change rate per 1,000 population, year to July 1, 2024 | -4.5511 | -4.551118817 |
| International migration rate per 1,000 population, year to July 1, 2024 | 0.2528 | 0.2528399343 |
| Domestic migration rate per 1,000 population, year to July 1, 2024 | -0.7946 | -0.794639793 |
| Group quarters population, July 1, 2024 | 2,393 | 2393 |
Values as reported by the source: county_name=Montgomery County, state_name=Illinois, state_fips=17, county_fips=135, region=2, division=3, estimates_base_2020=28321, pop_2020=28242, pop_2021=28128, pop_2022=27971, pop_2023=27756, pop_2024=27615, npopchg_2024=-141, births_2024=238, deaths_2024=364, naturalchg_2024=-126, internationalmig_2024=7, domesticmig_2024=-22, residual_2024=0, rbirth_2024=8.5965577649, rdeath_2024=13.147676582, rnaturalchg_2024=-4.551118817, rinternationalmig_2024=0.2528399343, rdomesticmig_2024=-0.794639793, gq_estimates_2024=2393