Cities in Sangamon County, Illinois by Population (2024)

There are 29 cities in Sangamon County, Illinois.

Note: As defined by the US Census Bureau, a city's official boundaries often extend miles beyond the city itself and may even cross county lines. As such, several thousand US cities officially exist in two or more counties (and therefore appear on multiple counties' lists of cities.)

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City
Rank
State
2024 Population
2020 Census
Annual Change
Density (mi²)
Area (mi²)
Springfield1Illinois112,282114,264-0.44%1,83361.26
Chatham2Illinois14,52414,4080.2%1,9617.41
Sherman3Illinois4,5814,669-0.48%1,4583.14
Auburn4Illinois4,4144,540-0.7%1,0704.12
Rochester5Illinois3,8533,859-0.03%1,4562.65
Riverton6Illinois3,4543,534-0.58%1,0963.15
Virden7Illinois3,1413,225-0.66%1,6631.89
Pawnee8Illinois2,7322,6800.48%2,0511.33
Athens9Illinois1,9031,971-0.89%1,1301.68
Jerome10Illinois1,6321,682-0.73%3,5320.46
Southern View11Illinois1,5371,587-0.78%2,2940.67
Mount Pulaski12Illinois1,4941,534-0.66%1,3171.13
Williamsville13Illinois1,4331,437-0.07%9261.55
Leland Grove14Illinois1,4011,449-0.85%2,2310.63
Grandview15Illinois1,3671,405-0.65%4,0810.34
New Berlin16Illinois1,3461,378-0.59%1,1911.13
Waverly17Illinois1,1351,187-1.13%1,0961.04
Divernon18Illinois1,1071,141-0.72%1,4510.76
Illiopolis19Illinois834844-0.24%1,2320.68
Pleasant Plains20Illinois805809-0.12%6031.33
Loami21Illinois792810-0.5%7831.01
Spaulding22Illinois776798-0.64%1,0350.75
Mechanicsburg23Illinois6566580%6331.04
Thayer24Illinois611631-0.81%1,0020.61
Dawson25Illinois503517-0.59%6350.79
Buffalo26Illinois430446-0.92%1,2460.34
Curran27Illinois2102120%1061.98
Berlin28Illinois139143-0.71%1560.89
Cantrall29Illinois137141-0.73%5480.25
showing: 29 rows

Note: City markers shown outside the county boundary mean that a part of the city extends into this county, but is primarily located in an adjacent county.

What is the largest city in Sangamon County, Illinois?

Springfield is the largest city in Sangamon County.

What is the smallest city in Sangamon County, Illinois?

Cantrall is the smallest city in Sangamon County.

How many cities are in Sangamon County?

There are 29 cities in Sangamon County, Illinois.

Frequently Asked Questions