Greenfield State Park

Greenfield State Park, a 400-acre park in the Monadnock region, offers swimming, fishing, and boating on Otter Lake surrounded by forest. It is one of New Hampshire's larger state park campgrounds with 255 tent and standard sites plus 4 group sites, none with hookups. Showers and a dump station are on site, and pets are allowed throughout. The campground was closed for infrastructure improvements in 2024 and reopened in 2025.

New Hampshire Division of Parks and Recreation statewide camping fee schedule (nhstateparks.org/fees-reservations/camping-rates-reservations), per night by site type: primitive $29; standard $35; lean-to $40; tent platform $35; waterfront $40; water & electric hookup (20/30 amp) $45; Cannon Mountain RV full hookup (30 amp) $50, primitive sites $35; Ellacoya waterfront full hookup $60; Hampton Beach RV dry camping $40, full hookup $70; yurt $50; camper cabin without electric $55, with electric $65, with solar heat $50; remote cabin (Umbagog Lake) $65, deluxe remote cabin $80; group sites $70-$140. Rates cover two adults and up to four children per site; each additional adult is $10/night and each additional child is $5/night. A $7 reservation fee applies per booking. New Hampshire residents 65 and older receive a $5/night discount (not valid at Hampton Beach or Ellacoya RV Parks, or Coleman's lodge rooms/houses). No resident/non-resident price difference otherwise. Cancellations 10+ days before arrival receive a full refund minus fees; 4-9 days before arrival, a partial refund; inside 3 days, no refund. Check-in is 1-8pm, check-out 11am; quiet hours are 10pm-7am. Maximum stay is 14 days per visit (14 consecutive/accumulative days over the Memorial Day-Labor Day season specifically at Hampton Beach and Ellacoya RV Parks). Pets are welcome at this campground under New Hampshire state park rules: dogs must be leashed and attended at all times, and are not permitted on swimming beaches.