Dunnellon is a small city in western Marion County, Florida, situated at the confluence of the Rainbow and Withlacoochee rivers about 20 miles southwest of Ocala. Its 2020 census population of about 1,900 belies its larger role as the anchor of a sprawling, nature-oriented region of riverfront communities, retirement developments, and spring-fed countryside. The city's identity is inseparable from its water, particularly the Rainbow River, whose famously clear, spring-fed headwaters rise at Rainbow Springs State Park just north of town. The town's history is one of boom and reinvention. In 1889, hard-rock phosphate was discovered by Albertus Vogt, and Dunnellon quickly became a mining "Boomtown," with the Withlacoochee River used to transport phosphate toward the Gulf. That industrial chapter gave the city its enduring nickname and its compact historic core. As mining declined, the area's springs and rivers — first developed as a tourist attraction in the 1930s — became the foundation of a new, recreation-based economy that persists today. Modern Dunnellon is a quiet, outdoors-focused community. Rainbow Springs State Park draws swimmers, tubers, kayakers, and paddlers to its crystalline headwaters, while the Blue Run of Dunnellon Park and the Dunnellon Trail — a rail-trail along the Withlacoochee — extend recreation through town. Fishing and boating on the Withlacoochee, and access to the nearby Gulf coast and Ocala's horse country, round out the landscape. The local economy rests on recreation, tourism, services, and a commuter population traveling to Ocala and the broader central Florida region. Public education is provided by Marion County Public Schools, including Dunnellon Elementary and Dunnellon High School. For homebuyers, Dunnellon offers riverfront homes, established in-town houses, and a wide range of retirement-oriented communities — all in a setting that pairs genuine natural beauty with a cost of living well below Florida's urban centers.