County
· Illinois
Mercer County
Mercer County is a county in Illinois. According to the 2020 census, it had a population of 15,699. Its county seat is Aledo. Mercer County is included in the Davenport-Moline-Rock Island, IA-IL Metropolitan Statistical Area.
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Cities and towns 10
Townships 15
- Township of Abington pop. 371
- Township of Duncan pop. 259
- Township of Eliza pop. 410
- Township of Greene pop. 1,434
- Township of Keithsburg pop. 642
- Township of Mercer pop. 3,956
- Township of Millersburg pop. 618
- Township of New Boston pop. 1,169
- Township of North Henderson pop. 386
- Township of Ohio Grove pop. 271
- Township of Perryton pop. 453
- Township of Preemption pop. 1,665
- Township of Richland Grove pop. 2,304
- Township of Rivoli pop. 1,046
- Township of Suez pop. 598
Reference data (Census of Governments 2022)
- Census ID (PID6)
- 162152
- FIPS state
- 17
- FIPS county
- 131
- FIPS place
- 99131
- Census record name
- COUNTY OF MERCER
- Mailing address
- COUNTY BUILDING, ALEDO 61231