Marathon, FL ZIP codes

1 ZIP/ZCTA intersecting this Census place in Monroe County.

ACS 2023 population

9,831

Median household income

$80,556

Median home value

$683,700

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: Census place Marathon (GEOID 1243000). Methodology

Combined population of ZIP/ZCTAs intersecting this place: 10,586 (1 ZIPs).

Combined population of ZIP/ZCTAs intersecting this place. Each intersecting ZIP contributes its full ZCTA population; overlap percents are descriptive only. This is not the Census place ACS headline above. Methodology

Map of Marathon, FL

Census place boundary and intersecting ZIP Code Tabulation Areas for Marathon, FL — Census place boundary for Marathon, FL. Intersecting ZCTAs may extend past the city limit. Not a USPS city limit. Boundaries: U.S. Census Bureau. Methodology · Data sources

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ZIP/ZCTA overlap with Marathon

Population overlap

Share of each ZIP/ZCTA’s population located within Marathon, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

3305092.5%
USPS primary city

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

ZIP codes intersecting Marathon

ZIP	City	County	Population	Income
33050	Marathon	Monroe County	10,586	$83,243

USPS associates these ZIPs with Marathon

These codes list Marathon as a primary or acceptable city. They are not used for the ACS headline.

ZIP	City	County	Population	Income
33051	Key Colony Beach	Monroe County	525	$94,531
33052	Marathon Shores	Monroe County	366	—