ZIP Code 33101 — Miami, Florida
ZIP code 33101 is a PO Box ZIP code assigned by the U.S. Postal Service in Miami, Miami-Dade County, Florida. It serves post office boxes at a Miami post office rather than street addresses, which is why the Census Bureau reports no resident population, income or housing figures for it. Mail is handled in the Eastern Time Zone and the local area codes are 305 and 786. The demographic profile of the surrounding neighborhood is on the delivery ZIP pages listed below.
📍 ZIP code 33101 is in Miami, Miami-Dade County, Florida.
ZIP
33101
City
Miami
County
Miami-Dade County
State
Florida
Time Zone
Eastern
Area Code
305 / 786
Type
PO Box
USPS City
Miami
Latitude
25.7751° N
Longitude
80.1947° W
Land Area
0 sq mi
Water Area
0 sq mi
Coordinates: 25.7751° N, 80.1947° W
Why there are no demographics for 33101
The Census Bureau publishes demographics for ZIP Code Tabulation Areas (ZCTAs), which are built from populated census blocks. 33101 is a PO Box ZIP serving the downtown Miami post office rather than a residential delivery area, so there is no ZCTA and no population, income, housing or education estimate to report.
For the surrounding neighborhoods, use the nearest delivery ZIPs that do carry Census data:
How ZIPs and ZCTAs differ is explained on the methodology page.
Nearby Zip Codes
Cities & Places Served
ZIP code 33101 primarily serves Miami in Miami-Dade County, Florida.
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View DetailsOriginal Research: Miami ZIP Code Affordability 2026
Which Miami and Miami Beach ZIP codes a median income can still buy into, where rent has crossed the 30% cost-burden line, the Fisher Island ceiling and the Little Havana floor, and how the two cities compare — every figure computed from the same Census ACS dataset behind this site.