The Short Answer
Longboat Key is not part of Sarasota. It is its own incorporated town in Manatee County, Florida. People say it is part of Sarasota because it sits just across the narrow Intracoastal Waterway from Sarasota proper, and the two areas share amenities, mail service, and general perception. But county lines don't care about perception. I ran into this exact question constantly when I worked in Florida property records. Buyers would ask me to pull comps for "Sarasota" and expect results from Longboat Key, then get confused when the numbers didn't align. The county data just doesn't cross over like that. Sarasota County and Manatee County maintain separate Property Appraiser offices, separate court records, and separate tax rates. Mixing them up will mess up your analysis quickly. Longboat Key is a barrier island running roughly parallel to the mainland coast of Manatee County. It stretches from about Lido Key in the north down past Siesta Key and into Manatee County toward Bradenton. The southern end of the key is near Palmetto Road, which is effectively the border between Sarasota County and Manatee County. Everything north of that line on the barrier islands falls under Sarasota County. Longboat Key sits almost entirely south of that line, which places it in Manatee County.
The Town of Longboat Key incorporated in 1978. Before that it was unincorporated Manatee County. The town government runs its own fire rescue, codes enforcement, and some municipal services. It is not a neighborhood of Sarasota. It does not receive city services from the City of Sarasota or Sarasota County. Its ZIP code is 34228, which is a Manatee County rate center, though USPS doesn't always respect county boundaries there either.
Why Everyone Thinks It Is Part Of Sarasota
The confusion makes practical sense. The bridge connecting Longboat Key to the mainland enters from the Sarasota side. The main commercial corridor along the key runs north-to-south and the northern tip is a short drive from downtown Sarasota. Many real estate listings use "Sarasota" as a marketing area because it carries more recognition than "Manatee County." Airlines and hotels reference Sarasota-Bradenton International Airport (SRQ), which sits in unincorporated Manatee County but is closer to Sarasota. You will see "Sarasota" slapped on everything from restaurant reviews to tourism brochures regardless of which county you are actually standing in. I have seen this play out in title work more than once. An attorney will draft a purchase contract listing the property as being in Sarasota County, the title company will catch it during the commitment phase, and then everyone spends a day correcting documents. The error itself is harmless in most cases because the legal description and parcel number tell the true story, but it delays closings and frustrates everyone involved.
Get the Full Details
How To Verify County Jurisdiction Yourself
The fastest way to check is through the county property appraiser website. For Longboat Key addresses, you go to the Manatee County Property Appraiser site and search by address or parcel. If you search on the Sarasota County site instead, you will get no result or a result for a completely different property across the water. That mismatch is your answer. You can also check the Florida Department of State Division of Corporations if you need official municipal boundaries. Or use GIS mapping tools from either county and toggle the boundary layer. Manatee County GIS shows Longboat Key clearly within its jurisdiction. Sarasota County GIS ends at the county line near the southern tip of the key. The IRS and Census Bureau also publish county boundary data that you can pull directly. It is dry, but it is authoritative and free.
What This Means In Practice
Tax rates differ. Manatee County property taxes and millage rates are not the same as Sarasota County. School district matters too. Longboat Key falls within Manatee County School District, not Sarasota County School District. If you have children or are planning for school zones, that distinction changes everything about which schools your property feeds into. Emergency services come from the Town of Longboat Key Fire Rescue or Manatee County, not Sarasota County Fire Rescue. Zoning codes, building permit processes, and impact fees are all managed at the Manatee County level. HOAs on Longboat Key operate independently of any Sarasota municipality. None of this changes based on how people refer to the area colloquially.
A Personal Headache
Once I was pulling a flood zone determination for a client who was selling a condo on Longboat Key. They had listed the property with a Sarasota address in their listing materials, and the closing attorney assumed the standard SAROSARA county flood certification workflow. FEMA maps are divided by county, and the form data defaults to the county you select. When I noticed the address was actually in Manatee County, I switched the county on the FEMA certification request before it went out. If I hadn't caught that, the lender would have received a report with the wrong county overlay, and we would have spent two weeks chasing a correction. It sounds minor but it is the kind of thing that stalls closings.
Bottom Line
Longboat Key is a separate town in Manatee County. It is not part of Sarasota County, the City of Sarasota, or any Sarasota municipality. The geographic proximity and shared regional identity create the illusion that it belongs to Sarasota. The paperwork does not support that illusion. When you need to get anything official done, use Manatee County resources, not Sarasota County ones. The difference shows up in taxes, schools, permits, flood maps, and court jurisdiction. It is worth knowing before you start assuming.
