Stock Island is a community in Monroe County, Florida, home to about 4,162 people across 0.8 square miles. It has no ZIP code of its own: it’s part of 33040.
Homes sold for a median of $824 per square foot in the three months ending August 2026, a buyer’s market.
Mostly Key West; part is in Stock Island
Each card is that ZIP code’s whole market, including any part outside Stock Island. Seller’s market: under 4 months of supply; buyer’s market: over 6. Methodology
We’re writing up Stock Island’s story and what everyday life there is like, for people thinking about moving in.
Are you a local agent who knows Stock Island well? Agents who advertise here will be able to write the guide. Advertise on OfferBacked
| Nearest major airport | Miami International Airport (MIA)127 miles away |
|---|---|
| Closer regional airport | Key West International Airport (EYW)1 mile away |
| Nearest city of 250,000+ | Miami, FL129 miles away |
Straight-line distances from the center of Stock Island; driving is longer.
Source: Airports from OurAirports (scheduled passenger service); city centers and populations from the U.S. Census Bureau.
Source: Members of Congress from the congress-legislators project; districts from the Census Bureau’s relationship files; governor and mayor from Wikidata.
Stock Island had 4,722 residents in the 2020 census, up 7% since 2000.
It’s the 528th largest of 954 towns in Florida by population.
Monroe County grew from 18,006 residents in 1900 to 82,874 in 2020.
Monroe County, 1900–2020
Source: U.S. Census Bureau decennial censuses (counties 1900–1990 from the Bureau’s historical county file).
Average highs peak around 90°F in summer, and winter lows average 63°F. About 46.4 inches of rain and melted snow fall in a typical year.
Source: NOAA 1991–2020 climate normals, Key W Wfo, FL weather station (about a mile away).
37,134 jobs at 4,154 businesses in Monroe County. The biggest industries by employees:
Source: U.S. Census Bureau County Business Patterns 2023 (private employers; jobs counted where people work).
407 doctors and other health care providers list an office in Stock Island.
Nearest hospitals
Providers with an office here
| Primary care doctors | 44 |
|---|---|
| Specialist doctors | 77 |
| Dentists | 33 |
| Nurse practitioners and physician assistants | 74 |
| Mental health providers | 128 |
| Physical and occupational therapists | 36 |
| Optometrists | 3 |
| Chiropractors | 12 |
| Pharmacies | 10 |
Source: Hospitals from CMS Hospital General Information (ratings are CMS overall star ratings); straight-line distances; providers from the CMS National Plan and Provider Enumeration System (NPPES), by practice address and primary specialty.
Parks (9 nearby)
Grocery stores (4 nearby)
Pharmacies (1 nearby)
Libraries
Museums
Theaters and performance venues (1 nearby)
Counts are within about 1 mile of the center of town.
Source: Map data © OpenStreetMap contributors (openstreetmap.org/copyright), as mapped by volunteers; it can miss places or include closed ones.
Public schools here are run by Monroe. Check each district’s attendance zones for a specific address.
| School | Grades | Students | Type | Distance |
|---|---|---|---|---|
| Gerald Adams Elementary SchoolKey West | Pre-K–5 | 674 | Public | 2.9 mi |
| Horace O'Bryant SchoolKey West | Pre-K–8 | 1,011 | Public | 0.3 mi |
| May Sands Montessori SchoolKey West | Pre-K–8 | 90 | Charter | 0.3 mi |
| Poinciana Elementary SchoolKey West | Pre-K–5 | 556 | Public | 1.1 mi |
| Monroe Virtual Instruction ProgramKey West | K–12 | 1 | Public | 1.1 mi |
| Monroe Virtual Instruction Program (District Provided)Key West | K–5 | — | Public | 1.1 mi |
| Sigsbee Charter SchoolKey West | K–8 | 531 | Charter | 1.7 mi |
| Lower Keys Academic Connections for ExcellenceKey West | 6–12 | 12 | Alternative Education | 0.3 mi |
| Monroe County Detention CenterKey West | 6–12 | — | Alternative Education | 2.4 mi |
| Monroe Virtual FranchiseKey West | 6–12 | 20 | Public | 1.1 mi |
| Keys CenterKey West | 8–12 | 9 | Alternative Education | 0.3 mi |
| Monroe Juvenile Detention CenterKey West | 8–12 | — | Alternative Education | 2.4 mi |
| Key West High SchoolKey West | 9–12 | 1,337 | Public | 0.3 mi |
| Somerset Island PrepKey West | 9–12 | 88 | Charter | 0.1 mi |
| The College of the Florida Keys AcademyKey West | 9–12 | 62 | Charter | 3.1 mi |
| School | Grades | Students | Affiliation | Distance |
|---|---|---|---|---|
| Grace LutheranKey West | Pre-K–7 | 68 | Lutheran Church–Missouri Synod | 0.7 mi |
| Montessori Children's School of Key WestKey West | Pre-K–6 | 68 | Nonsectarian | 0.5 mi |
Source: U.S. Department of Education, NCES: Common Core of Data (2024-2025) for public schools; Private School Universe Survey (2023-2024) for private schools. Listed by address; we don’t rate schools.
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Shares ZIP codes with Key West and Big Coppitt Key.
Town boundaries don’t always match ZIP codes: a ZIP code can cross into neighboring towns, and a town can share a ZIP code with its neighbors. Facts describe the town itself; market figures describe whole ZIP codes.