Monroe County GIS Maps
Monroe County, Florida, has 82,874 residents across 88,560 parcels and covers 983 square miles. The population grew 13.4% between the 2010 and 2020 census. More residents moved in than left over that decade. The FIPS code for Monroe County is 12087.
Key West is the county's largest population center. Monroe County also includes 9 zip codes, 1 public school district and 8 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show parcel data, population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers, Parcels and sample data. Paid packages add full layers, analytics and database files.
Monroe County Trends
- Population
- 82,874▴
- Median Home Value
- $723,800▴
- K-12 Enrollment
- 8,928▴
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Monroe County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Monroe County Parcels
Monroe County has 88,560 mapped parcels. The median assessed value is $385,193. The median lot size is 0.17 acres. 5,143 parcels are 10 acres or larger. Of the parcels with a recorded build year, half were built in 1983 or earlier. The records carry 45,276 distinct owner names. About 35% of parcels list an owner mailing address outside Florida. Owner names, mailing addresses, site addresses, assessed values and lot sizes are on nearly every parcel. Browse the interactive Monroe County Parcel viewer here.
Monroe County Parcel Data Coverage
| Field | Parcels | Coverage |
|---|---|---|
| Parcel ID | 88,560 | 100% |
| Owner name | 88,560 | 100% |
| Owner mailing address | 88,560 | 100% |
| Site address | 88,559 | 99.9% |
| Land use code | 88,560 | 100% |
| Land use description | 0 | 0% |
| Assessed value | 88,560 | 100% |
| Land value | 88,560 | 100% |
| Improvement value | 0 | 0% |
| Acreage | 88,560 | 100% |
| Parcel boundary | 88,560 | 100% |
| Download all Monroe County parcels. | ||
Field coverage measured across all Monroe County parcel records.
Monroe County Population
Monroe County had 82,874 residents in 2020. That was 13.4% higher than in 2010. Monroe County added 3,285 people between 2000 and 2020, which points to steady long-term growth. The county is fairly spread out, with about 84 people per square mile. Some of the county's most populated postal areas include Key West, Key Largo and Marathon.
Population Trend in Monroe County FL
Monroe County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Monroe County Zip Codes
Monroe County has 9 zip codes. Some of the county's most populated zip codes include Key West (33040), Key Largo (33037) and Marathon (33050). Key West is the largest zip by population, with about 35,958 residents or 43% of the county total. Together, the three largest zips account for about 73% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Monroe County FL
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 33040 | Key West | 35,958 | ▴ 9.3% |
| 33037 | Key Largo | 13,875 | ▴ 19.5% |
| 33050 | Marathon | 10,479 | ▴ 17.5% |
| 33042 | Summerland Key | 6,841 | ▴ 17.4% |
| 33070 | Tavernier | 6,220 | ▴ 16.4% |
| Download all zip code data | |||
Monroe County Zip Code populations and trends per most recent census data.
Monroe County Demographics
Monroe County has a median age of 48.9, which makes the county a little older than Florida overall. About 15.6% of residents are under 18, while 24.3% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 30.2% of the population, which points to a solid working-age base. About 37.8% of adults have a bachelor's degree or higher, above the statewide figure of 33.2%. The county has a more diverse population mix, with no single race or ethnicity accounting for all of the local story.
Key Demographics for Monroe County FL
Median Age
48.9
Under 18
15.6%
Age 65+
24.3%
Bachelor's+
37.8%
Monroe County School Districts
Monroe County is served by 1 public school district with 8,928 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% of public school enrollment in the map area. Total enrollment has grown modestly since 2017 across the districts shown on the county map.
Largest School Districts by Enrollment in Monroe County FL
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Monroe County School District | 8,928 | 100% | ▴ 0.2% |
| Download all school district data | |||
Monroe County school district enrollment and trends per most recent NCES reporting data.
Monroe County Housing & Real Estate
Monroe County has a median home value of $723,800 and a median gross rent of $1,959. About 63% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the Florida median, while rents come in above the state average. In March 2026, the median listing price was $1,297,000 and homes spent about 84 days on the market.
Monroe County Housing Mix
Monroe County housing mix: owner, renter and vacant units.
Monroe County Housing Trends
Monroe County median home value and rent trend (last 5 years).
Businesses in Monroe County, FL
Monroe County has 8,651 business listings across 749 categories. The largest categories in Monroe County business listings are Fishing Charter (327, 3.8%), Real Estate Agents (257, 3.0%), and Hotels (228, 2.6%). The full Monroe County business listings dataset includes names, categories, addresses and contact details where available. Monroe County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Monroe County, FL
| Category | Businesses | Share |
|---|---|---|
| Fishing Charter | 327 | 3.8% |
| Real Estate Agents | 257 | 3.0% |
| Hotels | 228 | 2.6% |
| Holiday Rental Home | 204 | 2.4% |
| Restaurants | 157 | 1.8% |
| Landmark And Historical Building | 142 | 1.6% |
| Boat Tours | 138 | 1.6% |
| Bars & Nightlife | 134 | 1.5% |
| Seafood Restaurants | 128 | 1.5% |
| Parks & Recreation | 116 | 1.3% |
Monroe County Business Listings
| Business | Category | City |
|---|---|---|
| Alcoholics Anonymous | Abuse And Addiction Treatment | Marathon |
| Pines and Palms Adventures | Accommodation | Islamorada |
| Pribramsky & Company | Accountant | Key West |
| Capt Dans Fishing Charters | Active Life | Key West |
| Marathon Acupuncture and Float Therapy | Acupuncture | Marathon |
| Leather Master of Key West | Adult Entertainment | Key West |
| Two Oceans Digital | Advertising Agency | Key West |
| Keys Helicopter Tours | Aerial Tours | Marathon |
| Beautiful Truth Garden & Apiary | Agricultural Service | Key Largo |
| Florida Keys Aquaculture | Agriculture | Key West |
| Download Monroe County business listings | ||
Monroe County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Monroe County Basemaps
Monroe County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Monroe County Data Package
This page shows a preview of what's included in the Monroe County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for parcels, zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Monroe County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.