Alexander County, Illinois Cities (2024)

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.)

City
Rank
2024 Pop.
2020 Pop.
Change
Density (/mi²)
Area (mi²)
Type
Cairo11,5051,716-3.4%2157.0City
Olive Branch2530610-4.33%569.4CDP
Tamms3369420-3.4%1582.3Village
East Cape Girardeau4250285-3.48%1272.0Village
McClure5221253-3.49%1451.5Village
Thebes6180204-3.23%1031.7Village
Unity763628.62%900.7CDP

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 Alexander County, Illinois?

Cairo is the largest city in Alexander County.

What is the smallest city in Alexander County, Illinois?

Unity is the smallest city in Alexander County.

How many cities are in Alexander County?

There are 7 cities in Alexander County, Illinois.

Frequently Asked Questions