ZIP code 33051
Where is ZIP code 33051?
Key Colony Beach, Florida
Monroe County · PO Box only ZIP code
ZIP code 33051 belongs to Key Colony Beach, Florida in Monroe County. 33051 is a PO Box only ZIP code: it is used for post office boxes at the Key Colony Beach post office, not for street addresses. It is in the Eastern Time zone and uses area codes 305 and 786. About 511 people live in the 33051 area, where the median household income is $94,231. The closest ZIP codes are 33050 (Marathon, 1.2 mi west), 33052 (Marathon Shores, 2.7 mi west) and 33001 (Long Key, 14.6 mi northeast).
| ZIP code | 33051 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Key Colony Beach |
| Also accepted | Key Col Bch, Marathon |
| State | Florida (FL) |
| County | Monroe County |
| Time zone | Eastern Time · now |
| Area codes | 305, 786 |
| Coordinates | 24.7234, -81.0203 map |
| 3-digit prefix | 330 |
Population and income in 33051
| Population | 511 · lower than 94% of Florida ZIP codes |
|---|---|
| People per square mile | 1,164 · lower than 51% of Florida ZIP codes |
| Median age | 66.5 years · higher than 97% of Florida ZIP codes |
| Men / women | 42% / 58% |
| Median household income | $94,231 · higher than 79% of Florida ZIP codes |
| Income per person | $50,017 |
| Below the poverty line | 8.2% |
| Bachelor’s degree or higher | 44% of adults 25+ |
| Median home value | $919,800 · higher than 97% of Florida ZIP codes |
| Median rent | $1,929 a month |
| Housing units | 1,105 |
| Households | 282 (1.81 people on average) |
| Owners / renters | 68% / 32% |
| Land area | 0.44 sq mi (plus 0.21 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 33051. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 33051
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 33050 | Marathon, FL | 1.2 mi W | Standard |
| 33052 | Marathon Shores, FL | 2.7 mi W | PO Box only |
| 33001 | Long Key, FL | 14.6 mi NE | PO Box only |
| 33043 | Big Pine Key, FL | 21.7 mi W | Standard |
| 33036 | Islamorada, FL | 28.1 mi NE | Standard |
| 33042 | Summerland Key, FL | 31 mi W | Standard |
| 33070 | Tavernier, FL | 37 mi NE | Standard |
| 33037 | Key Largo, FL | 43.8 mi NE | Standard |
| 33034 | Homestead, FL | 46 mi NE | Standard |
| 33040 | Key West, FL | 49.2 mi W | Standard |
| 33041 | Key West, FL | 49.2 mi W | PO Box only |
| 33045 | Key West, FL | 49.2 mi W | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 33051 or measure the distance to another ZIP code.
How to address mail to 33051
PO BOX 123
KEY COLONY BEACH FL 33051
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts KEY COL BCH and MARATHON as the city name for 33051. Adding the 4-digit ZIP+4 code (33051-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 33051?
- 33051 is a Key Colony Beach, Florida ZIP code. Key Col Bch and Marathon are also accepted as the city name.
- What county is 33051 in?
- ZIP code 33051 is in Monroe County, Florida.
- What time zone is ZIP code 33051 in?
- 33051 is in the Eastern Time zone (America/New_York).
- What area code is 33051?
- Phone numbers in ZIP code 33051 use area codes 305 and 786.
- What is the population of ZIP code 33051?
- About 511 people live in ZIP code 33051, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 33051?
- The median household income in 33051 is $94,231 a year, higher than 79% of Florida ZIP codes.
- Can I use 33051 for a street address?
- No. 33051 is only for PO Boxes. Street addresses in Key Colony Beach use another ZIP code.
- What ZIP codes are near 33051?
- The nearest ZIP codes to 33051 are 33050 (Marathon, 1.2 miles), 33052 (Marathon Shores, 2.7 miles), 33001 (Long Key, 14.6 miles) and 33043 (Big Pine Key, 21.7 miles).