Heceta Beach is an unincorporated community and census-designated place in Lane County, Oregon, United States, located west of U.S. Route 101 next to the Pacific Ocean. It is the next settlement north of the Siuslaw River and Florence and is within the Florence urban growth boundary. Heceta Beach was platted in 1915. Lane County maintains a small c…Heceta Beach is an unincorporated community and census-designated place in Lane County, Oregon, United States, located west of U.S. Route 101 next to the Pacific Ocean. It is the next settlement north of the Siuslaw River and Florence and is within the Florence urban growth boundary. Heceta Beach was platted in 1915. Lane County maintains a small county park there, with beach access, as well as restrooms and picnic tables.