Key West-Key Largo, FL micro area ZIP codes
The Key West-Key Largo, FL micropolitan statistical area (CBSA 28580) covers 1 county in Florida and 12 ZIP codes.
- ZIP codes
- 12
- Population
- 81,805
- Avg. median income
- $89,400population-weighted
- Counties
- 1
Click anywhere on the map to see which ZIP code it's in.
Counties in the Key West-Key Largo, FL area
ZIP codes in the Key West-Key Largo, FL area
| ZIP code | City | County | Population | Median income | Typical home value |
|---|---|---|---|---|---|
| 33001 | Long Key | Monroe County | 250 | — | $903,500 |
| 33036 | Islamorada | Monroe County | 3,777 | $86,032 | $1,243,500 |
| 33037 | Key Largo | Monroe County | 14,770 | $86,533 | $1,094,000 |
| 33040 | Key West | Monroe County | 35,429 | $86,586 | $956,800 |
| 33041 PO Box | Key West | Monroe County | — | — | — |
| 33042 | Summerland Key | Monroe County | 6,441 | $103,041 | $1,034,200 |
| 33043 | Big Pine Key | Monroe County | 4,298 | $110,491 | $752,900 |
| 33045 PO Box | Key West | Monroe County | — | — | — |
| 33050 | Marathon | Monroe County | 10,561 | $94,898 | $836,100 |
| 33051 | Key Colony Beach | Monroe County | 511 | $94,231 | $885,800 |
| 33052 PO Box | Marathon Shores | Monroe County | — | — | — |
| 33070 | Tavernier | Monroe County | 5,768 | $75,436 | $903,800 |
Population and median household income: ACS 2020–2024 5-year estimates. Typical home value: Zillow Home Value Index (September 2026) where available, otherwise the ACS median owner-reported value. "PO Box" marks ZIP codes with no delivery area of their own. Methodology
Frequently asked questions
How many ZIP codes are in the Key West-Key Largo, FL micro area?
12 ZIP codes, based on each ZIP code's main county.
Which counties make up the Key West-Key Largo, FL area?
Monroe County.
What is an MSA?
A metropolitan statistical area (MSA) is a core city of 50,000+ people plus the surrounding counties tied to it by commuting, as defined by the U.S. Office of Management and Budget. Micropolitan areas have a core of 10,000–50,000. Together they are called core-based statistical areas (CBSAs).