What kinds of homes are in Marathon, FL?

Name: Types of homes in Marathon, FL, 2020–2024
Creator: US Census Bureau
License: https://www.census.gov/data/developers/about/terms-of-service.html

Marathon, FL has 6,492 (±351) homes (2020–2024 American Community Survey).

That is about 769 homes per square mile of land.

48.7% are detached single-family houses.

9.8% are in buildings of two to four units.

20.0% are in buildings of five or more units.

Figures last updated on November 12, 2026.

Housing units: 6,492 (±351)
Detached houses: 48.7%
2–4 unit buildings: 9.8%
5+ unit buildings: 20.0%

Homes in Marathon by building size

Housing units by units in structure, 2020–2024
Building type	Marathon	Monroe County	Florida	United States
Single-family, detached	48.7% (±4.8 points)	58.3%	54.7%	61.3%
Single-family, attached (townhouse, rowhouse)	7.8% (±2.5 points)	6.7%	6.7%	6.2%
2 units	6.1% (±2.4 points)	5.5%	2.0%	3.4%
3 or 4 units	3.7% (±2.0 points)	4.8%	3.9%	4.3%
5 to 9 units	3.0% (±1.9 points)	3.9%	4.7%	4.5%
10 to 19 units	7.0% (±1.8 points)	3.4%	5.4%	4.3%
20 or more units	10.0% (±2.7 points)	8.6%	14.4%	10.3%
Mobile home	13.4% (±2.8 points)	8.3%	8.0%	5.6%
Boat, RV, van, etc.	0.6% (±0.5 points)	0.5%	0.2%	0.1%

In Marathon, the share of homes in buildings of five or more units is higher than in Monroe County (15.9%).

It is also lower than in Florida (24.5%).

It is not measurably different from the national figure (19.1%).

Homes in buildings of 5 or more units in places near Marathon

Nearest places with a published estimate, compared with Marathon
Place	Distance	Homes in buildings of 5 or more units	Compared with this place
Marathon	—	20.0% (±3.8 points)	—
Key Colony Beach	0.7 mi	19.5% (±6.4 points)	Not measurably different
Layton	15 mi	3.2% (±34.1 points)	Not measurably different
Big Pine Key	21 mi	5.7% (±5.3 points)	Lower
Cudjoe Key	30 mi	1.2% (±4.8 points)	Lower
Islamorada	35 mi	19.2% (±4.4 points)	Not measurably different
Tavernier	39 mi	7.0% (±5.4 points)	Lower
Big Coppitt Key	41 mi	3.2% (±4.5 points)	Lower
Stock Island	46 mi	32.9% (±12.5 points)	Not measurably different

Nearby places with a measurably lower figure: Big Pine Key, FL (5.7%), Cudjoe Key, FL (1.2%), Tavernier, FL (7.0%).

Distance is measured in a straight line between the Census Bureau’s internal points for each place.

Homes in buildings of 5 or more units across Monroe County, place by place

Rank	Place	Homes in buildings of 5 or more units
1	Stock Island	32.9% (±12.5 points)
2	Key West	24.4% (±3.1 points)
3	Marathon	20.0% (±3.8 points)
4	Key Colony Beach	19.5% (±6.4 points)
5	Islamorada	19.2% (±4.4 points)
6	North Key Largo	19.0% (±8.2 points)
7	Key Largo	10.7% (±2.9 points)
8	Tavernier	7.0% (±5.4 points)
9	Big Pine Key	5.7% (±5.3 points)

Showing 9 of 12 places in Monroe County, ranked from highest to lowest.

Survey years: 2020–2024 (American Community Survey 5-year estimates).

Margins of error are at the 90% confidence level.

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Questions about Marathon

How many homes are in Marathon?

Marathon, FL has an estimated 6,492 (±351) housing units, occupied and vacant (2020–2024 American Community Survey).

Are most homes in Marathon houses or apartments?

48.7% are detached houses and 7.8% attached houses, while 29.8% are in buildings of two or more units.

How many two-family and small multifamily homes are in Marathon?

9.8% of homes in Marathon are in buildings of two to four units, the small rental buildings that are often owner-occupied.

Sources

Selected Housing Characteristics (DP04), 2020–2024 ACS 5-year estimates — Marathon city, Florida

To check these figures in the Census Bureau’s own API, request the variables below from the 2024 ACS 5-year data profile (acs/acs5/profile) for Marathon city, Florida (place:43000, in state:12).

Each estimate (E or PE) has a margin of error beside it (M or PM).

The API needs a free key.

Request a Census API key.

DP04_0001E, DP04_0001M, DP04_0007PE, DP04_0007PM, DP04_0008PE, DP04_0008PM, DP04_0009PE, DP04_0009PM, DP04_0010PE, DP04_0010PM, DP04_0011PE, DP04_0011PM, DP04_0012PE, DP04_0012PM, DP04_0013PE, DP04_0013PM, DP04_0014PE, DP04_0014PM, DP04_0015PE, DP04_0015PM

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Figures are published by the US Census Bureau, HUD, the Bureau of Labor Statistics and the FBI; Seayora reproduces them and does not adjust them, except where a sentence says it compares dollar figures after inflation. They describe the whole place, not any one building or street, and are not an appraisal, a rent determination, a tax bill, a safety rating or legal advice.