Mercer County Fairs & Festivals 2026
2 events across 2 towns in Mercer County, New Jersey.
EndedFreeAgriculturalFamily
Mercer County 4-H Fair
Free two-day 4-H fair at Howell Living History Farm in Hopewell Township.
Sat–Sun, Jul 25–26Hopewell Township
EndedFamilyFood FestivalMusic
L.E.A.D. Fest State Fair
Ten-day carnival and fair at Mercer County Park benefiting L.E.A.D.
Jun 26 – Jul 5West Windsor