At a glance: Green iguana records are concentrated in central and southern Florida, particularly coastal areas and the Keys. A distribution map shows documented occurrence—not a count of every animal, proof that every neighborhood is occupied, or an exact northern boundary.
If you are searching for an iguanas-in-Florida map, start with a sourced distribution reference rather than a graphic that simply colors the entire state. Green iguanas occur unevenly. Suitable habitat, introductions, and cold weather all influence where they persist.
UF/IFAS provides a green iguana distribution reference and map in Figure 10. Its discussion is based on museum records and observations reported in EDDMapS. That is a useful starting point, but it is not a live census or a guarantee of conditions at a particular address.
Where green iguanas occur in Florida
The current FWC green iguana profile lists populations along the Atlantic coast in Broward, Martin, Miami-Dade, Monroe, and Palm Beach counties, and along the Gulf coast in Collier and Lee counties. FWC also notes reports farther north, including Alachua, Highlands, Hillsborough, Indian River, and St. Lucie counties, but cautions that those individuals are likely escaped or released animals rather than established populations. These records should not be converted into county-by-county abundance rankings.
| Region | What the reviewed reference supports | What it does not establish |
|---|---|---|
| Southern Atlantic coast | FWC lists Broward, Martin, Miami-Dade, Monroe, and Palm Beach counties | Every city block or property has iguanas |
| Southern Gulf coast | FWC lists Collier and Lee counties | A statewide ranking by population or impact |
| Florida Keys | Included in the established regional distribution | Equal abundance on every island |
| Central Florida | UF/IFAS discusses broader records; FWC distinguishes northern reports from establishment | A continuous population across all inland areas |
| Farther north | Cold limits distribution; unusual sightings need documentation | Every isolated sighting proves a breeding population |
For background rather than map interpretation, read how iguanas arrived in Florida. Our overview of invasive iguana species across Florida covers the broader identification question, while growing iguana concern in the Florida Keys focuses on that distinct region.
How to read an iguana map without overinterpreting it
A record is not a population count
A sighting or specimen record establishes evidence that an animal was observed at a location. It does not, by itself, tell you how many animals live nearby. Repeated observations, breeding evidence, and expert review are more informative when assessing establishment.
Also consider who is reporting. Accessible parks, roads, and residential canals may receive more observations than places people rarely visit. Blank areas can reflect missing reports rather than confirmed absence. Conversely, a single marker can reflect a transient animal or an introduction without showing sustained reproduction.
Check the species and the date
A map labeled “iguanas” can combine different species with different distributions. Identify whether it refers to green iguanas or spiny-tailed iguanas, and look for the reference date and explanation of symbols. Older range maps remain useful context but should not be presented as an exact snapshot of today’s populations. The broader UF/IFAS discussion and the more specific FWC county list are different descriptions of evidence; neither is a property-level census.
This article does not supply a newly drawn statewide range boundary. Use the linked UF/IFAS figure as a documented reference, and distinguish that published map from local observations made afterward.
Why canals and coastal neighborhoods attract iguanas
Green iguanas are strong swimmers and climbers, and UF/IFAS describes them as usually near permanent water. Trees offer places to bask and sleep; seawalls, docks, lawns, and sidewalks offer open basking surfaces. Landscape flowers, fruits, and tender shoots provide food.
Canals and levees can act as dispersal corridors. That helps explain why iguanas can be familiar along one waterway but less obvious several streets away. A favorable location does not prove that every nearby yard will be occupied.
How cold affects the northern range
Cold temperatures limit the northern extent of green iguana distribution. During severe cold snaps, animals can become lethargic and fall from trees. This does not create a permanent range line: exposure duration, shelter, local conditions, and renewed introductions matter.
Do not assume an iguana on the ground is dead or safe to handle. Keep your distance and pets away. An animal can become active again as it warms. Likewise, there is not enough evidence here to predict that iguanas will occupy all of Florida by a particular date.
Other iguanas and mistaken identifications
UF/IFAS identifies green iguanas, black spiny-tailed iguanas, and Mexican spiny-tailed iguanas as introduced members of the iguana family established in Florida. Black spiny-tailed iguanas occur along southern Gulf and Atlantic coasts and in some of the Keys. This is not a basis for assigning an exact species to an entire county.
Green iguanas have a prominent round scale behind the jaw, a dewlap, and dorsal spines. Spiny-tailed iguanas have rings of pointed tail scales and lack that enlarged jaw scale. The two spiny-tailed species can be difficult even for scientists to distinguish. Young green iguanas may also be confused with introduced knight anoles.
What to do with a local sighting
Take a photograph from a safe distance, note the date and location, and record whether you saw one animal or repeated activity. Do not approach an animal to improve the picture. UF/IFAS recommends reporting observations, especially outside its mapped area, through EDDMapS.
For a property concern, document actual damage: eaten landscaping, droppings, or digging near a seawall or other vulnerable structure. Avoid assuming a burrow belongs to an iguana; native wildlife can also use burrows. Identification should come before a removal decision.
For property-specific assistance, review On Demand’s iguana removal service and describe the activity you have observed.
Sources and map reference
The regional interpretation above uses FWC’s current green iguana profile, UF/IFAS: Florida’s Introduced Reptiles—Green Iguana, including Figure 10 and UF/IFAS: Dealing with Iguanas in the South Florida Landscape. No population-density layer, new county boundary, or statewide prediction has been invented for this article.
Frequently Asked Questions
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Where are iguanas most common in Florida?
FWC lists green iguana populations in Broward, Martin, Miami-Dade, Monroe, and Palm Beach counties on the Atlantic side, and Collier and Lee counties on the Gulf side. UF/IFAS describes them as most common near southern coasts. Neither source establishes a current county-by-county abundance ranking.
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How far north in Florida do iguanas live?
FWC lists Martin County among Atlantic populations and reports farther north in several counties, while cautioning that those individuals are likely escaped or released captive animals rather than established populations. There is no fixed permanent range boundary, and one sighting does not prove sustained breeding.
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Are iguanas found on the Gulf Coast of Florida?
Yes. UF/IFAS includes coastal southern Florida in the green iguana distribution and also describes black spiny-tailed iguanas along the southern Gulf coast. Local abundance varies; a coastal record does not establish that every Gulf Coast community is occupied.
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Why don't iguanas live in North Florida?
Cold weather limits green iguana survival and distribution, but the premise should not be treated as a claim that no iguana is ever observed in North Florida. An individual sighting and a persistent breeding population are different kinds of evidence.
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Will iguanas eventually spread to all of Florida?
That cannot be predicted confidently from the sources reviewed. Cold, habitat, introductions, and local conditions all matter. This guide does not assign a date for statewide colonization or present a future range map as established fact.
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What types of iguanas are found in different parts of Florida?
UF/IFAS identifies green iguanas, black spiny-tailed iguanas, and Mexican spiny-tailed iguanas as introduced iguanas established in Florida. Green and black spiny-tailed iguanas overlap in parts of southern coastal Florida and the Keys. Species identification requires more than a location alone.
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