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Where 33040 is
Approximate ZIP boundary (Census ZCTA 2020). ZIP codes are mail routes, not areas, so the shape shown is the Census tabulation area that approximates it.
- 🔢 Type 33040 into a pocket calculator and turn it upside down: OhOEE — not quite a word, sorry.
- ➕ As a number, 33,040 = 2 × 2 × 2 × 2 × 5 × 7 × 59. Its digits add up to 10, a total 513 other ZIP codes share.
- 💾In binary, the way a computer stores it:
1000000100010000 - 🏠 Its numerical neighbours: 33039 (Homestead, FL, 116 mi away) and 33041 (Key West, FL, 9 mi away).
- 🔄 Backwards, 33040 becomes 04033 — and that is a real ZIP code: Freeport, ME, 1,492 miles away.
- 👥 16 other ZIP codes are made of exactly the same digits (03034, 03043, 03304, 04033, 04330, 30034, …). The farthest-flung twin is 34030 in APO AA, a military post office, 4,183 miles away.
- 🧭 Farther south than 98% of all ZIP codes, and farther east than 67%.
- 🎯1,432 miles southeast of the geographic center of the Lower 48, near Lebanon, Kansas.
- 🌏 Dig straight through the Earth from 33040 and you would come out at 24.54°S, 98.08°E — 860 miles from West Island, Cocos Islands, the nearest big city to that spot.
- ☀Longest day of the year: 13h 40m of daylight. Shortest: 10h 37m.
- 📏 At 17.7 square miles of land, 33040 is bigger than 35% of ZIP codes — room for about 13 Central Parks.
- Working out the sun…
- Checking the USGS…
Source: USGS.
People and housing
| Population | 35,429This ZIP35,429 |
|---|---|
| Households | 14,574This ZIP14,574 |
| Housing units | 19,404This ZIP19,404 |
| Median age | 43.8This ZIP43.8Florida42.6US 38.9 |
| Median household income | $86,586This ZIP$86,586Florida$74,568US $80,734 |
| Median home value | $819,400This ZIP$819,400Florida$359,000US $332,700 |
| Median gross rent | $2,167This ZIP$2,167Florida$1,669US $1,413 |
| Bachelor's degree or higher | 38.2%This ZIP38.2% |
| Mean commute | 15.8 minThis ZIP15.8 min |
| Population density | 1,998.9 / sq miThis ZIP1,998.9 / sq mi |
Business and tax activity
| Business establishments | 1,787This ZIP1,787 |
|---|---|
| Employees | 17,382This ZIP17,382 |
| Annual payroll | $856,803,000This ZIP$856,803,000 |
| Tax returns filed | 19,040This ZIP19,040 |
| Total adjusted gross income | $2,503,435,000This ZIP$2,503,435,000 |
Land area
| Land area | 17.72 sq miThis ZIP17.72 sq mi |
|---|---|
| Water area | 121.50 sq miThis ZIP121.50 sq mi |
Other place names in 33040
Census places whose land this ZIP code overlaps. The Postal Service may accept other city names in an address, too.
ZIP codes near 33040
| ZIP | City | Distance |
|---|---|---|
33041 | Key West, FL | 8.8 mi |
33045 | Key West, FL | 8.8 mi |
33042 | Summerland Key, FL | 27.6 mi |
33043 | Big Pine Key, FL | 42.4 mi |
33052 | Marathon Shores, FL | 55.3 mi |
33051 | Key Colony Beach, FL | 57.9 mi |
33050 | Marathon, FL | 60.4 mi |
33001 | Long Key, FL | 73.1 mi |
33036 | Islamorada, FL | 80.6 mi |
33070 | Tavernier, FL | 93.1 mi |
Find every ZIP code within 10 miles of 33040 →
Questions about this ZIP code
Where is ZIP code 33040?
33040 is in Key West, Florida, in Monroe County, part of the Key West-Key Largo, FL micropolitan area. Its published point location is 24.5446, -81.9217.
What county is 33040 in?
33040 lies in Monroe County.
What time zone is 33040 in?
33040 uses America/New_York.
How many people live in 33040?
About 35,429 people live in ZIP code 33040, in 14,574 households, at 1,998.9 people per square mile. These are American Community Survey 5-year estimates for the ZIP Code Tabulation Area, not a headcount.
What is the median household income in 33040?
$86,586 a year, against $74,568 across Florida.
What ZIP codes are near 33040?
The closest are 33041 (8.8 mi), 33045 (8.8 mi), 33042 (27.6 mi), 33043 (42.4 mi) and 33052 (55.3 mi).
Is 33040 a PO Box ZIP code?
33040 is a standard ZIP code. A normal ZIP code with street delivery.
Download or cite
Cite this page
zipcodes.pro. “33040 ZIP Code — Key West, Florida (Monroe County).” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/zip/33040
Machine-readable version of these facts:
curl https://zipcodes.pro/zip/33040.jsonUnderlying data is public domain or openly licensed — sources, vintages and licences.