Mercer County, Illinois
47 public bodies govern here, 2 school districts are based here, and USDA lists 2 farmers markets. Everything below says where it came from.
In four numbers
- People
- 15,495
- Median household income
- $74,182
- ±7,031
- Unemployed
- 3.2%
- 241 of 7,648 in the labour force
- Homes with broadband
- 90.5%
- 5,941 of 6,565 households
U.S. Census Bureau, American Community Survey 5-year estimates 2020-2024; read 2026-09-26. Percentages worked out here from the two counts shown.
Who governs here
County government 1
| Name | People | Office | Website |
|---|---|---|---|
| County of Mercer | 15,582 (2021) | County Building, Aledo | Website |
Cities, towns and villages 10
| Name | People | Office | Website |
|---|---|---|---|
| City of Aledo | 3,620 (2021) | 120 N College Ave, Aledo | Website |
| City of Keithsburg | 545 (2021) | Po Box 87, Keithsburg | Website |
| City of New Boston | 611 (2021) | 405 Main St, New Boston | Website |
| Village of Joy | 364 (2021) | Po Box 265, Joy | — |
| Village of Matherville | 702 (2021) | Po Box 585, Matherville | — |
| Village of North Henderson | 163 (2021) | Po Box 101, North Henderson | — |
| Village of Seaton | 212 (2021) | Po Box 36, Seaton | — |
| Village of Sherrard | 690 (2021) | 517 3rd St, Sherrard | Website |
| Village of Viola | 859 (2021) | Po Box 278, Viola | — |
| Village of Windsor | 664 (2021) | 125 N 3rd Ave, New Windsor | — |
Townships 15
| Name | People | Office | Website |
|---|---|---|---|
| Township of Abington | 371 (2021) | Po Box 123, Seaton | — |
| Township of Duncan | 259 (2021) | 1226 145th Ave, Joy | — |
| Township of Eliza | 410 (2021) | 644 156th Ave, New Boston | — |
| Township of Greene | 1,434 (2021) | Po Box 350, Aledo | — |
| Township of Keithsburg | 642 (2021) | 1105 Madison Street, Keithsburg | — |
| Township of Mercer | 3,956 (2021) | 1876 115th Ave, Aledo | — |
| Township of Millersburg | 618 (2021) | Po Box 253, Joy | — |
| Township of New Boston | 1,169 (2021) | 407 3rd Street, New Boston | — |
| Township of North Henderson | 386 (2021) | 495 300th St, North Henderson | — |
| Township of Ohio Grove | 271 (2021) | 1932 55th Ave, Aledo | — |
| Township of Perryton | 453 (2021) | 1297 175th St, Aledo | — |
| Township of Preemption | 1,665 (2021) | Po Box 182, Matherville | — |
| Township of Richland Grove | 2,304 (2021) | 319 Ridgeview Dr, Sherrard | — |
| Township of Rivoli | 1,046 (2021) | 915 283rd St, Viola | — |
| Township of Suez | 598 (2021) | Po Box 504, Alexis | — |
Special districts 21
| Name | What it does | Office | Website |
|---|---|---|---|
| Bay Island Drainage and Levee District of Mercer County | Drainage | 1697 80th St, New Boston | — |
| Mercer County Housing Authority | Housing and community development | 609 Nw 4th Ave, Aledo | Website |
| Aledo Mercer Carnegie Public Library District | Libraries | 200 N College Ave, Aledo | Website |
| New Windsor Public Library District | Libraries | Po Box 220, New Windsor | — |
| Seaton Community Public Library District | Libraries | 201 Walnut St, Seaton | — |
| Sherrard Public Library District | Libraries | Po Box 345, Sherrard | Website |
| Viola Public Library District | Libraries | 1705 14th Ave, Viola | Website |
| Aledo Fire Protection District | Local fire protection | Po Box 148, Aledo | — |
| Green Township Fire and Ambulance Protection District | Local fire protection | Po Box 571, Viola | — |
| Joy Community Fire and Ambulance District | Local fire protection | 1011 100th St, Joy | — |
| New Boston-Eliza Fire Protection District | Local fire protection | Po Box 169, Aledo | — |
| Rivoli Fire and Ambulance Protection District | Local fire protection | 414 Main St, New Windsor | — |
| Seaton Fire and Ambulance Protection District | Local fire protection | Po Box 145, Seaton | — |
| Sherrard Community Fire and Ambulance Protection District | Local fire protection | Po Box 516, Sherrard | Website |
| Mercer County Public Building Commission | Other multi-function districts | 906 Sw 3rd St, Aledo | — |
| Aledo Community Center Authority | Parks and recreation | 410 Se 2nd Ave, Aledo | — |
| Aledo Park District | Parks and recreation | Po Box 221, Aledo | — |
| Seaton Park District | Parks and recreation | Po Box 85, Seaton | — |
| Matherville Sanitary District | Sewerage | Po Box 625, Matherville | — |
| Viola Sanitary District | Sewerage | Po Box 472, Viola | — |
| Mercer County Soil and Water Conservation District | Soil and water conservation | 308 Se 8th Ave, Aledo | — |
U.S. Census Bureau, 2022 Census of Governments, Government Units List (published August 2023); the file read 2026-09-26. Offices are placed by county; a special district’s territory can cross county lines. Each body posts its own meetings on its website where the Census records one.
School districts based here
Mercer County School District 404
School district5 schools
203 N Washington St, Joy, IL, 61260
Its website — where its board posts meetings. Federal record.
Sherrard CUSD 200
School district5 schools
4701 176Th Ave, Sherrard, IL, 61281
Its website — where its board posts meetings. Federal record.
National Center for Education Statistics, Common Core of Data 2024-25; read 2026-09-26.
Farmers markets
Aledo Main Street Farmer's Market & Bake Sale
PO Box 209 PO Box 209 Aledo, IL, 61231
Gathered by USDA from the web; USDA record last changed 2023-03-20. USDA listing
Main Street Farmers Market Downtown Aledo
S. College Avenue Aledo, IL, 61231
Gathered by USDA from the web; USDA record last changed 2023-03-20. USDA listing
USDA National Farmers Market Directory; read 2026-09-26.