Monroe County, FL ZIP Codes
11 ZIP codes cover all or part of Monroe County, Florida. The Census Bureau counts 81,860 residents in the county, with a median household income of $87,738 and a median home value of $780,600. Median household income ranges from $47,170 in 33034 to $110,491 in 33043. Its largest communities include Key West, Key Largo, Marathon, Islamorada, Village of Islands and Big Pine Key.
Monroe County (Census county figures)
| Measure | Census figure |
|---|---|
| Residents | 81,860 |
| Households | 34,405 |
| Median household income | $87,738 |
| Median home value | $780,600 |
| Median age | 49.2 |
| Median rent | $1,999 |
All 11 ZIP codes together
| Measure | Value |
|---|---|
| Residents (sum of ZIP codes) | 105,797 |
| Households (sum of ZIP codes) | 41,085 |
| Median household income, range across ZIP codes | $47,170 (33034) to $110,491 (33043) |
| Household-weighted average of ZIP medians (an approximation, not a true median) | $82,539 |
| Homeowners | 61.0% |
| Households with kids under 18 | 25.4% |
| Moved in the past year | 13.2% |
| Carrier routes in EDDM2GO's route library | 104 routes, 54,544 homes (9 of 11 ZIP codes) |
Top facts
- Highest median household income in Monroe County: 33043 ($110,491)
- Most residents: 33040 (35,429 people)
- Highest homeownership: 33043 (88.4% own their home)
- Most households with kids: 33034 (46.4% of households)
- Most new movers: 33040 (17.5% moved in last year)
- Youngest median age: 33034 (32.4 years)
- Highest median home value: 33036 ($1,017,400)
Every ZIP code in Monroe County
| ZIP | Mailing city | Residents | Households | Median income | Home value | Homeowners | With kids | New movers | Carrier routes | Mailboxes | Why listed |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 33040 | Key West | 35,429 | 14,574 | $86,586 | $819,400 | 50.2% | 23.0% | 17.5% | 38 | 17,933 | 100% of its land |
| 33034 | Homestead | 23,823 | 6,656 | $47,170 | $339,300 | 35.9% | 46.4% | 6.5% | 11 | 10,885 | 47% of its land |
| 33037 | Key Largo | 14,770 | 6,083 | $86,533 | $683,000 | 79.2% | 18.2% | 10.3% | 17 | 9,361 | 100% of its land |
| 33050 | Marathon | 10,561 | 4,313 | $94,898 | $747,300 | 61.5% | 24.6% | 16.0% | 11 | 7,045 | 100% of its land |
| 33042 | Summerland Key | 6,441 | 2,820 | $103,041 | $856,500 | 82.7% | 20.4% | 14.9% | 8 | 3,887 | 100% of its land |
| 33070 | Tavernier | 5,768 | 2,507 | $75,436 | $732,800 | 81.7% | 21.4% | 17.3% | 7 | 3,716 | 100% of its land |
| 33043 | Big Pine Key | 4,298 | 1,879 | $110,491 | $638,000 | 88.4% | 22.1% | 14.7% | 6 | 3,054 | 100% of its land |
| 33036 | Islamorada | 3,777 | 1,808 | $86,032 | $1,017,400 | 84.1% | 15.4% | 7.0% | 5 | 2,824 | 100% of its land |
| 33051 | Key Colony Beach | 511 | 282 | $94,231 | $919,800 | 68.1% | 2.8% | 28.6% | — | — | 100% of its land |
| 33001 | Long Key | 250 | 131 | — | $703,100 | 70.2% | 0.0% | 0.0% | — | — | 100% of its land |
| 34141 | Ochopee | 169 | 32 | $106,591 | — | 62.5% | 43.8% | 12.3% | 1 | 207 | 20% of its land |
A ZIP code is listed for Monroe County when at least 10% of its land is in the county, when it holds at least 10% of the county's land, or when the county is its main county. Totals add up whole ZIP codes, including parts that cross the county line; the Census county figures above do not.
Cities and communities
- Key West — 25,720 residents · 1 ZIP code
- Key Largo — 13,026 residents · 1 ZIP code
- Marathon — 9,914 residents · 1 ZIP code
- Islamorada, Village of Islands — 7,068 residents · 2 ZIP codes
- Big Pine Key — 4,258 residents · 1 ZIP code
- Stock Island — 4,162 residents · 1 ZIP code
- Big Coppitt Key — 3,109 residents · 1 ZIP code
- Cudjoe Key — 2,492 residents · 1 ZIP code
- Tavernier — 2,413 residents · 1 ZIP code
- North Key Largo — 1,808 residents · 1 ZIP code
- Duck Key — 647 residents · 1 ZIP code
- Key Colony Beach — 511 residents · 1 ZIP code
- Layton — 118 residents · 1 ZIP code
Rankings
- Richest ZIP codes in Monroe County — 8 ZIP codes ranked
- ZIP codes with the highest home values in Monroe County — 8 ZIP codes ranked
- ZIP codes with the highest homeownership in Monroe County — 8 ZIP codes ranked
- ZIP codes with the most families with kids in Monroe County — 8 ZIP codes ranked
- ZIP codes with the most new movers in Monroe County — 8 ZIP codes ranked
- Youngest ZIP codes in Monroe County — 8 ZIP codes ranked
- Oldest ZIP codes in Monroe County — 8 ZIP codes ranked
- Fastest-growing ZIP codes in Monroe County — 8 ZIP codes ranked
Price a mailing to Monroe County ZIP codes
EDDM guides
Pick carrier routes on the EDDM route map
Frequently asked questions
- What ZIP codes are in Monroe County, FL?
- 33040, 33034, 33037, 33050, 33042, 33070, 33043, 33036, 33051, 33001 and 34141. Some cross the county line; the table shows each ZIP's share of land in the county.
- What is the population of Monroe County?
- 81,860 residents in 34,405 households (ACS 5-year estimates, 2020–2024).
- What is the median household income in Monroe County?
- $87,738 for the county as a whole. Its ZIP codes range from $47,170 (33034) to $110,491 (33043).
- Which Monroe County ZIP code has the highest median household income?
- 33043, at $110,491, among ZIP codes with at least 1,000 residents. See the full ranking of Monroe County ZIP codes by income.
- How many carrier routes and mailboxes are in Monroe County?
- For the 9 of 11 ZIP codes in EDDM2GO's stored route library: 104 carrier routes reaching 54,544 residential and 4,376 business mailboxes. The route map loads the rest when you search them.
This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.