Population 27,942 · Census ACS 2020–24
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Population and households in Montgomery County
Household size in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 2.35 | 2.69 | 2.68 |
| 2010–14 | 2.25 | 2.71 | 2.73 |
| 2015–19 | 2.24 | 2.66 | 2.71 |
| 2020–24 | 2.29 | 2.58 | 2.65 |
| Change | −0.06 | −0.11 | −0.03 |
Montgomery County is a place of small households, averaging 2.29 people against 2.65 for the U.S., which points to many singles, couples and roommates and relatively few children. Since 2006–10, household size has edged down from 2.35, in line with the national trend. Households are largest in the north and smallest in the west.
Household size: the average number of people living in each occupied home. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25010).
Median age in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 42.4 | 37.6 | 37.7 |
| 2010–14 | 43.5 | 38.5 | 38.6 |
| 2015–19 | 44.9 | 39.6 | 39.6 |
| 2020–24 | 43.9 | 40.2 | 40.1 |
| Change | +1.6 | +2.6 | +2.3 |
The median resident of Montgomery County is 43.9 years old, older than the national median of 40.1. The median age has climbed from 42.4 in 2006–10, as it has nationally. Residents skew youngest in the northwest and oldest in the center.
Median age: the age that splits residents into two equal halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B01002).
Single-parent households in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 8.9% | 11.7% | 12.3% |
| 2010–14 | 10.4% | 11.7% | 12.3% |
| 2015–19 | 9.9% | 11.1% | 11.6% |
| 2020–24 | 7.2% | 11.3% | 11.6% |
| Change | −1.8 pts | −0.4 pts | −0.6 pts |
Single-parent households are relatively rare in Montgomery County: 7.2% of households, against 11.6% nationally. Since 2006–10, the single-parent share has fallen 1.8 points, in line with the national trend. Of Illinois' 102 counties, only five have a lower share of single-parent households.
Single-parent households: households where one adult with no spouse present lives with children under 18. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B11003).
Housing in Montgomery County
Renters in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 22.2% | 30.8% | 33.3% |
| 2010–14 | 22.9% | 33.1% | 35.6% |
| 2015–19 | 23.6% | 33.9% | 36.0% |
| 2020–24 | 22.6% | 32.9% | 34.8% |
| Change | +0.4 pts | +2.1 pts | +1.5 pts |
Only 22.6% of households in Montgomery County rent their homes, far below the national share of 34.8%, so most residents are owners who tend to stay put. About half of owners (48.9%) have paid off their mortgages, above the national share of 39.8%.
Renters: occupied homes that are rented rather than owned. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25003).
Vacant homes in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 10.6% | 10.0% | 11.4% |
| 2010–14 | 14.6% | 10.1% | 11.4% |
| 2015–19 | 12.9% | 9.8% | 11.1% |
| 2020–24 | 9.7% | 8.1% | 9.6% |
| Change | −0.9 pts | −1.9 pts | −1.8 pts |
Vacancy in Montgomery County is close to the national rate: 9.7% of homes are empty, against 9.6%. The rate is higher than in Illinois as a whole (8.1%). Vacancy has edged down 0.9 points since 2006–10, mirroring the country.
Vacant homes: homes with no one living in them, including vacation homes and homes for sale or rent. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25002).
Age of homes in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 1959 | 1966 | 1974 |
| 2010–14 | 1963 | 1967 | 1975 |
| 2015–19 | 1964 | 1968 | 1977 |
| 2020–24 | 1962 | 1970 | 1980 |
| Change | +4 | +4 | +6 |
Montgomery County is a place of older homes: half were built before 1962, while the national median is 1980. That means established neighborhoods, and more houses that may need updating. The median year built has moved up from 1959 in 2006–10, a sign of steady new building. The newest homes are mostly in the southwest, the oldest in the northeast.
Age of homes: the year that splits the housing stock into older and newer halves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25035).
Rent in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | $596 | $953 | $965 |
| 2010–14 | $602 | $1,028 | $1,040 |
| 2015–19 | $686 | $1,165 | $1,213 |
| 2020–24 | $739 | $1,428 | $1,571 |
| Change | +$143 | +$475 | +$606 |
Rent in Montgomery County runs $739 a month at the median, utilities included, well below the U.S. median of $1,571. Rents are up $143 a month from 2006–10, a 24% rise, a slower climb than the nation's. Rent takes 27.6% of the typical renter's income, just under the 30% mark often used to define affordable rent. Rents run highest in the north and lowest in the center.
Rent: monthly rent plus the utilities renters pay themselves. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B25064).
Education in Montgomery County
Bachelor's degrees in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 13.7% | 31.2% | 28.4% |
| 2010–14 | 14.1% | 32.4% | 29.6% |
| 2015–19 | 17.3% | 34.7% | 32.1% |
| 2020–24 | 19.0% | 37.7% | 35.6% |
| Change | +5.3 pts | +6.5 pts | +7.2 pts |
Fewer adults in Montgomery County have a four-year degree than in the country as a whole: 19.0%, against 35.6% nationally. The share with a degree is up 5.3 points from 2006–10, as it has nationally. College graduates are most concentrated in the northwest and least in the southeast.
Bachelor's degrees: adults 25 and older with a bachelor's degree or higher. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
High school graduates in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 83.9% | 86.3% | 84.9% |
| 2010–14 | 87.4% | 87.5% | 86.1% |
| 2015–19 | 88.7% | 89.1% | 87.7% |
| 2020–24 | 90.8% | 90.3% | 89.3% |
| Change | +6.9 pts | +4.0 pts | +4.3 pts |
About nine in ten adults in Montgomery County have finished high school (90.8%), a bit above the national rate of 89.3%. Illinois as a whole looks much the same. The share with a diploma is up 6.9 points from 2006–10, as it has nationally.
High school graduates: adults 25 and older with a high school diploma, GED or more. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B15003).
Jobs in Montgomery County
| Period | Montgomery County | Illinois | U.S. |
|---|---|---|---|
| 2006–10 | 7.2% | 8.7% | 8.1% |
| 2010–14 | 6.7% | 10.2% | 9.4% |
| 2015–19 | 4.8% | 6.1% | 5.6% |
| 2020–24 | 4.9% | 6.0% | 5.4% |
| Change | −2.3 pts | −2.7 pts | −2.7 pts |
At 4.9%, unemployment in Montgomery County is close to the national rate of 5.4%. The rate is lower than in Illinois as a whole (6.0%). Unemployment is down 2.3 points from 2006–10, as it has nationally.
Unemployment: people looking for work as a share of everyone working or looking. Source: BestNeighborhood calculations from U.S. Census Bureau ACS 5-year block-group estimates (table B23025).
Montgomery County compared with nearby counties
| County | Household size | Median age | Single parents | Renters | Vacant homes | Median year built | Median rent | Bachelor's degree | High school diploma | Unemployment |
|---|---|---|---|---|---|---|---|---|---|---|
| Montgomery County | 2.29 | 43.9 | 7.2% | 22.6% | 9.7% | 1962 | $739 | 19.0% | 90.8% | 4.9% |
| Macoupin County | 2.53 | 44.2 | 10.9% | 21.5% | 16.6% | 1964 | $851 | 20.9% | 91.6% | 3.6% |
| Jersey County | 2.54 | 43.5 | 9.8% | 19.5% | 19.6% | 1973 | $921 | 22.6% | 93.8% | 3.0% |
| Effingham County | 2.46 | 40.7 | 7.9% | 21.8% | 9.9% | 1979 | $730 | 27.6% | 93.3% | 2.0% |
| Calhoun County | 3.58 | 47.6 | 5.8% | 11.3% | 42.7% | 1971 | $607 | 19.9% | 94.3% | 3.8% |
| Cumberland County | 2.48 | 44.5 | 7.0% | 15.8% | 10.2% | 1970 | $847 | 19.1% | 94.2% | 1.4% |
| Jasper County | 2.44 | 45.1 | 8.8% | 14.8% | 11.6% | 1976 | $758 | 21.0% | 92.1% | 5.1% |
| Crawford County | 2.34 | 42.2 | 10.4% | 18.1% | 11.3% | 1966 | $802 | 21.3% | 90.7% | 3.0% |
| Sullivan County | 2.43 | 42.7 | 10.3% | 23.6% | 11.4% | 1973 | $881 | 15.1% | 89.9% | 5.2% |
| Audrain County | 2.65 | 40.2 | 8.9% | 28.2% | 13.0% | 1970 | $718 | 18.0% | 88.1% | 4.4% |
| Greene County | 2.37 | 42.5 | 11.5% | 23.0% | 9.5% | 1975 | $845 | 16.0% | 88.9% | 5.7% |
All figures 2020–24.
Counties with similar populations: Fluvanna County, VA · Geary County, KS · Seminole County, OK · Scott County, IN · Yadkin County, NC · Franklin County, KS · Franklin County, IN · Franklin County, IL · Saline County, IL · Franklin County, AL
About these numbers
Every figure on this page is a BestNeighborhood calculation from the Census Bureau's American Community Survey (ACS), built up from the Census block groups that make up Montgomery County. Each ACS 5-year release pools five years of responses; this page shows the last 15 releases, 2006–10 through 2020–24. Neighboring releases share four of their five years, so they move gradually and small changes between them are within the survey's margin of error; in small places the lines can jump from one release to the next for the same reason. The maps show the same measures for each neighborhood, ranked against the whole country.
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