Edgewood County Park, County park in San Mateo County, US.

Edgewood County Park is a large nature preserve in Redwood City with different habitats spread across its grounds. The land includes grasslands, scrub, coastal vegetation, woodland areas in hilly terrain, and wetlands, with each area holding different plant species.

San Mateo County bought the 467-acre property from the State of California in 1979 for about $2 million. Supervisors approved an 18-hole public golf course master plan and certified an environmental impact report by the end of 1982. A 1983 lawsuit by the California Native Plant Society was settled out of court with a commitment to protect sensitive habitats, and in summer 1993 the Board of Supervisors declared the whole park a Natural Preserve after a feasibility study found the flat golf-course land held the protected species.

The park's name comes from the Edgewood Road entrance and the woodland edge along the San Francisco Peninsula. Since the 1993 Natural Preserve designation, the land has been managed for its native plants rather than recreation alone, and the California Native Plant Society, whose 1983 lawsuit led to habitat protection, still leads wildflower walks here each spring.

The park sits near Interstate 280 and is easy to reach via Edgewood Road. Visitors can explore the grounds on numerous hiking trails and nature paths, with routes suitable for different fitness levels.

The Bay checkerspot butterfly, federally listed as threatened in 1987, survives here on serpentine soil that supports its host plants. The same flat ground that made the park attractive for a golf course also held the protected species, a finding that ended the golf plans in 1993.