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Sangamon County, IL
25 cities and towns and 27 ZIP codes in Sangamon County, Illinois.
Population
194,947
Land area
868sq mi
People per sq mi
225
ZIP codes
27
Cities and towns in Sangamon County
Sangamon County at a glance
- By population, it ranks 11th among 102 counties in Illinois.
- The median household income is $75,357, 10% below the Illinois median of $83,390.
- A typical owner-occupied home is valued at $176,300 (33% below Illinois) and median rent is $983 a month.
- Its largest cities are Springfield (113,330), Chatham (14,639) and Sherman (4,386).
Local data for Sangamon County, IL
Counts from official public data
- Hospitals3
- Emergency Rooms2
- Nursing Homes8
- Schools89
- Colleges6
- Libraries13
- Banks75
- Post Offices25
- Parks97
- Grocery Stores47
- Restaurants651
- Affordable Housing11
- Home Health Agencies5
- Hospice Care6
- Dialysis Centers6
- Rehab & Long-Term Care Hospitals1
- Community Health Centers11
- Mental Health & Addiction Treatment14
- National Cemeteries1
- Private Schools14
- Community Colleges & Trade Schools4
- Toxic Release Facilities3
- Historic Places53
Housing and community stats
Sangamon County, IL, American Community Survey 2020-2024
Median household income
$75,357
Poverty rate
13.1%
Median home value
$176,300
Prices +4.5% in a year
Median rent
$983/mo
Homeownership
71.3%
Bachelor's or higher
36.6%
Median age
41.0
Average commute
19.7 min
Largest reported origins and ancestries: German Americans (40,274), Irish Americans (24,126), Italian Americans (8,847).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
3.6%
Sep 2026, -0.9 pts in a year
Average annual pay
$72,668
130,936 jobs, 2025
Income per person
$63,581
BEA, 2024
Federal spending
$3.3B
FY 2026, $16,718 per person
PPP loans
$445M
7,712 loans, 51,947 jobs reported
Campaign donations
$11.9M
Itemized, 2026 cycle
How people get to work
Sangamon County, IL, workers 16 and older. American Community Survey 5-year estimates
- Drove alone77.1%
- Carpooled5.6%
- Public transit0.9%
- Walked1.4%
- Bicycle0.4%
- Taxi, ride-hailing, motorcycle or other0.9%
- Worked from home13.7%
Average one-way commute: 19.7 minutes for people who do not work from home.
Environment and hazard risk
Sangamon County, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: tornado
Storm events since 1996
947
Most often thunderstorm wind
Flood insurance policies
167
0.2% of homes, county
July high / Jan low
86° / 19°F
40.4 inches of rain a year
Hazards, floods and storm historyCheck a flood zone53 historic places
Health statistics
Share of adults in Sangamon County, IL, CDC PLACES estimates
Obesity
39.6%
U.S. 33.3% +6.3 pts
Diabetes
11.9%
U.S. 12.1% about the same
Smoking
13.2%
U.S. 12.8% about the same
Uninsured (18-64)
7.1%
U.S. 11.1% -4.0 pts
Cities, towns and ZIP codes in Sangamon County
Population shown
- Springfield113,330
- Chatham14,639
- Sherman4,386
- Auburn4,306
- Rochester3,766
- Riverton3,513
- Pawnee2,738
- Jerome1,807
- Southern View1,751
- Leland Grove1,517
- New Berlin1,442
- Williamsville1,314
- Grandview1,243
- Divernon1,164
- Illiopolis890
- Pleasant Plains886
- Spaulding879
- Loami782
- Mechanicsburg728
- Dawson536
- Thayer531
- Buffalo482
- Cantrall142
- Curran115
- Berlin103
Frequently asked questions
- What is the largest city in Sangamon County, IL?
- Springfield is the largest city or town in Sangamon County, with about 113,330 residents.
- How many ZIP codes are in Sangamon County?
- Sangamon County includes 27 ZIP Code Tabulation Areas, including 62515, 62520, 62530, 62536, 62539.
- What is the population of Sangamon County, IL?
- About 194,947 people live in Sangamon County, based on American Community Survey 5-year estimates.
- What counties border Sangamon County?
- Sangamon County borders Macon County, Macoupin County, Christian County, Morgan County, Montgomery County, Logan County, Cass County, Menard County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023