Local Wiki
Mercer County
Official County Record
Official source, last checked Sep 7, 2026- County Board meets
- First Monday of each month at 7:00 p.m. (preceded by Finance Committee at 6:00 p.m.).
- Meeting location
- Mercer County Courthouse, 100 SE 3rd St., Aledo, IL 61231.
- County Clerk
- Brian Gerber · 309-582-7021 · bgerber@mercercountyil.org
- Agendas posted at
- https://mercercountyil.org/county-board/
- Chair, County Board
- Mercer County Board, 9 members representing 5 districts. Chairman: Josh Frieden (District 4) (confirmed unchanged from the December 2025 directory).
Other Known Local Governments Here
These local governments — special-purpose districts, and smaller incorporated cities and towns — are known to exist in this area, but haven’t been individually researched yet, so there’s no meeting info or contacts on file. Listed here as a starting point if you want to look into one yourself; where we could confirm an official website, the name links there. More may exist here than are listed.
Cities (3)
- Aledo (official website, opens in a new tab)
- Keithsburg
- New Boston
Source: U.S. Census Bureau Population Estimates Program, 2024 · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Villages (9)
- Alexis
- Joy
- Matherville
- North Henderson
- Reynolds
- Seaton
- Sherrard
- Viola
- Windsor (official website, opens in a new tab)
Source: U.S. Census Bureau Population Estimates Program, 2024 · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
School districts (2)
- Mercer County School District 404
- Sherrard CUSD 200
Source: NCES Common Core of Data (via Urban Institute), 2022 directory — regular school districts only
Special districts · Drainage (1)
- Bay Island Drainage and Levee District of Mercer County
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Fire Protection (7)
- Aledo Fire Protection District
- Green Township Fire and Ambulance Protection District
- Joy Community Fire and Ambulance District
- New Boston-Eliza Fire Protection District
- Rivoli Fire and Ambulance Protection District
- Seaton Fire and Ambulance Protection District
- Sherrard Community Fire and Ambulance Protection District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Housing & Community Development (1)
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Library (5)
- Aledo Mercer Carnegie Public Library District
- New Windsor Public Library District
- Seaton Community Public Library District
- Sherrard Public Library District (official website, opens in a new tab)
- Viola Public Library District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts) · Website links from the official .gov registry and the Census Bureau’s 2022 Government Units listing, checked September 2026
Special districts · Multi-Purpose (1)
- Mercer County Public Building Commission
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Parks & Recreation (3)
- Aledo Community Center Authority
- Aledo Park District
- Seaton Park District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Sewer (2)
- Matherville Sanitary District
- Viola Sanitary District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)
Special districts · Soil & Water Conservation (1)
- Mercer County Soil and Water Conservation District
Source: U.S. Census Bureau, 2022 Census of Governments — Government Units listing (independent special districts)