Special Events & Permits in Mercer County, NJ (2026)
2 rules for unincorporated Mercer County, New Jersey.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Mercer County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Park Event Permits
No one may use or occupy Mercer County park land or structures except under terms, conditions, and times approved by the County Park Commission.
Mercer County Park Facility Use Permit
Significant RestrictionsMercer County Code § 2.19.010
No person or entity, other than employees of the County or the Mercer County Park Commission, shall use or occupy lands or structures, title to which is in the County and which are acquired, maintained or made available by the Mercer County Park Commission, other than upon terms, conditions and times approved by the Mercer County Park Commission for the use of park facilities by all citizens. ...
Street Fair Rules
Any gathering of 50 or more people in a Mercer County park, including a street-fair-style festival with vendors, needs a group use permit filed at least seven days before the event. Smaller open-grove family picnics of 25 or fewer are exempt.
Group Event Permit Rule for Mercer Parks
Significant RestrictionsMercer County Park Commission Rules and Regulations (Dec. 7, 2016), "Group Use, Meetings, Exhibitions"
No group of fifty (50) or more persons shall use a County Park or Recreation Area without first having obtained a group use permit no later than seven (7) days before the proposed date of use. Adult supervision of children's groups is required at all times. ... Open grove areas are for small family picnics with no more than 25 people {including children) and do not require a permit.
All Mercer County ordinances
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