Sierra Oaks Estates sits in Jacksonville, the Duval County seat spread along both banks of the St. Johns River in Northeast Florida. The city is a patchwork of older streetcar-era neighborhoods and later subdivisions, and Sierra Oaks Estates belongs to that later residential pattern, a named community of homes arranged along its own internal streets. Mature oaks are a familiar part of the Jacksonville landscape, shading lots and giving many neighborhoods a settled, green feel even as the city continues to grow around them. Public schools serving the area are part of Duval County Public Schools, and residents use the broader city's roads, including I-295 and I-95, for commuting, shopping and services. It is a straightforward residential enclave within a large metropolitan city. Browse Sierra Oaks Estates homes for sale below.