Big Coppitt Key vs Marathon

A side-by-side comparison of Big Coppitt Key and Marathon: population, income, housing, and more.

Big Coppitt Key and Marathon are places in Florida. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Marathon has the higher population (9,831 vs 3,333 in Big Coppitt Key). Big Coppitt Key has the higher median household income ($104,306 vs $80,556 in Marathon). Marathon has the higher median home value ($683,700 vs $590,700 in Big Coppitt Key).

Population, income & housing

	Big Coppitt Key	Marathon
Population	3,333	9,831
Median age	43.9 yrs	45.6 yrs
Median household income	$104,306	$80,556
Median home value	$590,700	$683,700
Median gross rent	$2,274	$1,592
Housing units	1,576	6,442
Homeownership rate	61.6%	57.8%
Bachelor's degree or higher	23.2%	33.0%
Unemployment rate	3.5%	5.4%

Trends (ACS 5-year, 2019–2023)

	Big Coppitt Key	Marathon
Population	2,825 → 3,333 (+18.0%)	8,702 → 9,831 (+13.0%)
Median household income	$86,875 → $104,306 (+20.1%)	$56,365 → $80,556 (+42.9%)
Median home value	$408,300 → $590,700 (+44.7%)	$425,200 → $683,700 (+60.8%)
Median gross rent	$1,742 → $2,274 (+30.5%)	$1,319 → $1,592 (+20.7%)

Big Coppitt Key

Population

2,8253,333

Median household income

$86,875$104,306

Median home value

$408,300$590,700

Median gross rent

$1,742$2,274

Marathon

Population

8,7029,831

Median household income

$56,365$80,556

Median home value

$425,200$683,700

Median gross rent

$1,319$1,592

Age & race/ethnicity

Age distribution (share)

	Big Coppitt Key	Marathon
Under 5	4.9%	5.4%
5 to 17	13.0%	14.7%
18 to 24	10.2%	5.1%
25 to 34	14.5%	10.3%
35 to 44	7.7%	13.5%
45 to 54	16.3%	16.1%
55 to 64	18.1%	14.0%
65 to 74	9.7%	12.4%
75 and over	5.6%	8.4%

Race & ethnicity (share)

	Big Coppitt Key	Marathon
White (non-Hispanic)	64.7%	59.3%
Black or African American	4.5%	3.9%
American Indian & Alaska Native	0.0%	0.0%
Asian	0.0%	0.4%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.1%
Two or more races	2.5%	3.2%
Hispanic or Latino	28.3%	33.1%

Educational attainment (age 25+)

Share of adults 25+

	Big Coppitt Key	Marathon
No high school diploma	7.1%	9.7%
High school graduate	33.4%	29.6%
Some college or associate's	36.4%	27.7%
Bachelor's degree	15.8%	19.4%
Graduate or professional degree	7.4%	13.5%

Commute to work

How workers get to work (share)

	Big Coppitt Key	Marathon
Drove alone	79.1%	62.0%
Carpooled	17.4%	10.6%
Public transit	0.0%	0.0%
Walked	0.0%	11.8%
Bicycle	0.0%	1.0%
Worked from home	1.8%	10.9%
Other means	1.7%	3.6%

Housing

Units in structure (share)

	Big Coppitt Key	Marathon
1-unit, detached	69.9%	49.5%
1-unit, attached	3.3%	8.3%
2 to 4 units	2.7%	8.1%
5 to 19 units	2.1%	11.4%
20 or more units	1.7%	9.8%
Mobile home & other	20.3%	12.8%

Poverty & households

	Big Coppitt Key	Marathon
Poverty rate	7.1%	11.4%
Average household size	2.71	2.46
Mean commute (minutes)	24	13
Median year structure built	1987	1980