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Montgomery County, IL
20 cities and towns and 16 ZIP codes in Montgomery County, Illinois.
Population
27,942
Land area
704sq mi
People per sq mi
40
ZIP codes
16
Cities and towns in Montgomery County
Montgomery County at a glance
- Montgomery County is 83% less dense than Illinois as a whole.
- Households here earn a median of $63,620 a year, 24% less than the Illinois figure of $83,390.
- A typical owner-occupied home is valued at $112,300 (57% below Illinois) and median rent is $723 a month.
- The biggest population centers are Litchfield (6,834), Hillsboro (5,803) and Nokomis (2,147).
Local data for Montgomery County, IL
Counts from official public data
Housing and community stats
Montgomery County, IL, American Community Survey 2020-2024
Median household income
$63,620
Poverty rate
12.6%
Median home value
$112,300
Prices -3.2% in a year
Median rent
$723/mo
Homeownership
77.4%
Bachelor's or higher
18.3%
Median age
42.8
Average commute
22.8 min
Largest reported origins and ancestries: German Americans (8,102), Irish Americans (3,601), Italian Americans (1,559).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
3.7%
Aug 2026, -1.0 pts in a year
Average annual pay
$49,222
8,847 jobs, 2025
Income per person
$56,457
BEA, 2024
Federal spending
$185M
FY 2026, $6,546 per person
PPP loans
$48.12M
1,400 loans, 6,276 jobs reported
Campaign donations
$176K
Itemized, 2026 cycle
How people get to work
Montgomery County, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone81.2%
- Carpooled5.6%
- Public transit0.0%
- Walked2.8%
- Bicycle0.5%
- Taxi, ride-hailing, motorcycle or other0.9%
- Worked from home9.0%
Average one-way commute: 22.8 minutes for people who do not work from home.
Environment and hazard risk
Montgomery County, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Low
Top: earthquake
Storm events since 1996
454
Most often thunderstorm wind
Flood insurance policies
3
0.0% of homes, county
July high / Jan low
89° / 21°F
42.1 inches of rain a year
Hazards, floods and storm historyCheck a flood zone11 historic places
Health statistics
Share of adults in Montgomery County, IL, CDC PLACES estimates
Obesity
39.1%
U.S. 33.3% +5.8 pts
Diabetes
12.6%
U.S. 12.1% +0.5 pts
Smoking
16.1%
U.S. 12.8% +3.3 pts
Uninsured (18-64)
8.6%
U.S. 11.1% -2.5 pts
Cities, towns and ZIP codes in Montgomery County
Population shown
Frequently asked questions
- What is the largest city in Montgomery County, IL?
- Litchfield is the largest city or town in Montgomery County, with about 6,834 residents.
- How many ZIP codes are in Montgomery County?
- Montgomery County includes 16 ZIP Code Tabulation Areas, including 62015, 62017, 62032, 62049, 62051.
- What is the population of Montgomery County, IL?
- About 27,942 people live in Montgomery County, based on American Community Survey 5-year estimates.
- What counties border Montgomery County?
- Montgomery County borders Madison County, Sangamon County, Macoupin County, Christian County, Fayette County, Shelby County, Bond County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023