- Alto – Formed from Willow Creek on February 28, 1860.
- Amboy
- Ashton – Formed as Ogle from Bradford on February 12, 1861; name changed to Ashton on November 7, 1867.
- Bradford
- Brooklyn
- China – Name changed from Fremont on May 14, 1850.
- Dixon
- East Grove – Formed from Hamilton on November 9, 1864.
- Hamilton
- Harmon – Formed from Marion on March 3, 1857.
- Lee Center
- Marion – Formed from Hamilton and Amboy in September, 1854.
- May – Formed from Hamilton in September, 1854.
- Nachusa – Formed from China on February 8, 1871.
- Nelson – Formed from Dixon on February 28, 1860.
- Palmyra
- Reynolds – Formed from Brooklyn in September, 1858.
- South Dixon – Formed from Dixon on February 12, 1867.
- Sublette – Name changed from Hanno (date unknown).
- Viola – Formed as Stockton from Brooklyn on February 12, 1861; name changed to Viola in September, 1861.
- Willow Creek – Formed from Wyoming in September, 1854.
- Wyoming – Name changed from Paw Paw on May 14, 1850.
Cities
Villages
- Ashton
- Compton
- Franklin Grove
- Harmon
- Lee
- Nelson
- Paw Paw
- Steward
- Sublette
- West Brooklyn
Unincorporated communities
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