Ranking of Monroe, FL Cities and Places By population in 2023
Updated on June 27, 2025.
Based on the US Census Vintage data estimates, in 2023, among all Monroe, FL cities and places, Balance of Monroe County had the highest population (38.03K), followed by Key West city (25.32K), and Marathon city (9.94K).
The chart below shows the top 6 cities and places, and the table below shows the ranking of all Monroe cities and places.
You can see similar information for other Florida counties. You can also see the ranking of all cities and places in Florida.
Data Source: US Census Bureau (Vintage).
Ranking of Monroe, FL Cities and Places By population in 2023
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| Rank | City or Place | Population |
|---|---|---|
| 1 | Balance of Monroe County | 38030 |
| 2 | Key West city | 25317 |
| 3 | Marathon city | 9939 |
| 4 | Islamorada, Village of Islands village | 7049 |
| 5 | Key Colony Beach city | 762 |
| 6 | Layton city | 209 |