Monroe

Source:

Florida

Monroe is a smaller county in Florida with 9 ZIP codes, 73,057 people, and top-decile household income among US counties. All data is sourced from the U.S. Census Bureau American Community Survey (ACS) 2023 5-Year Estimates.

National county placement

According to ACS 5-Year Estimates, Monroe, FL sits among US counties with a top-decile household income, on a smaller county population base, across a compact ZIP cluster.

Top 10%
household income vs 3,210 US counties
73,057
combined ZIP population
9
USPS ZIP codes covered
$92,156
avg ZIP median income

Income percentile ranks this county's average ZIP median household income against 3,210 US counties with ACS income on at least one ZIP.

Monroe lands in the national county income distribution as top-decile household income on smaller county footing (FIPS 12087, 9 ZIPs, combined population 73,057). Sort the ZIP table by population before treating the county mean as uniform.

Upper-income footing across a mid-size ZIP set (9 codes). Sibling delivery areas are close enough that a two-ZIP compare usually separates the county seat from outlying tracts without leaving Monroe. Use the density column to spot the urban core before jumping to HUD/FBI county overlays.

Save two ZIPs from the table into your shortlist, then open a compare link - that is the return path a static county summary cannot replace. All figures here come from Census ACS 2023 5-Year Estimates and USPS ZCTA files.

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9

Total ZIPs

73,057

Total Population

ZIP Codes in Monroe

Side-by-side: Compare 33040 vs 33037 →

ZIP Code City Population Density
33040 Key West 32,891 686
33037 Key Largo 11,612 133
33050 Marathon 8,922 379
33042 Summerland Key 5,829 88
33070 Tavernier 5,344 473
33043 Big Pine Key 4,313 112
33036 Islamorada 3,035 200
33051 Key Colony Beach 796 704
33001 Long Key 315 62

What are common questions about ZIP codes in this county?

What is the population of Monroe?
Monroe has a total population of 73,057 across 9 ZIP codes, based on U.S. Census Bureau ACS 2023 data.
What ZIP codes are in Monroe?
Monroe includes 9 ZIP codes: 33040, 33037, 33050, 33042, 33070, 33043, 33036, 33051, 33001.
Data sources

Source: U.S. Census Bureau, American Community Survey (ACS) 5-Year Estimates (2023). Verify with Census Bureau →

Source: HUD USPS Crosswalk (ZIP-to-county mapping). Verify with HUD →

PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.

Related

Compare any two ZIPs side by side

Read our methodology : how this data is sourced, computed, and verified.