Cobb Island vs La Plata

A side-by-side comparison of Cobb Island and La Plata: population, income, housing, and more.

Cobb Island and La Plata are places in Maryland. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

La Plata has the higher population (10,470 vs 1,162 in Cobb Island). Cobb Island has the higher median household income ($161,141 vs $121,707 in La Plata). La Plata has the higher median home value ($405,200 vs $246,100 in Cobb Island).

Population, income & housing

	Cobb Island	La Plata
Population	1,162	10,470
Median age	45.7 yrs	41.5 yrs
Median household income	$161,141	$121,707
Median home value	$246,100	$405,200
Median gross rent	—	$1,483
Housing units	545	3,961
Homeownership rate	85.6%	77.5%
Bachelor's degree or higher	7.4%	33.9%
Unemployment rate	4.6%	3.2%

Trends (ACS 5-year, 2019–2023)

	Cobb Island	La Plata
Population	846 → 1,162 (+37.4%)	9,376 → 10,470 (+11.7%)
Median household income	$97,344 → $161,141 (+65.5%)	$87,036 → $121,707 (+39.8%)
Median home value	$336,000 → $246,100 (-26.8%)	$330,000 → $405,200 (+22.8%)
Median gross rent	$2,000 → $1,859 (-7.0%)	$1,312 → $1,483 (+13.0%)

Cobb Island

Population

8461,162

Median household income

$97,344$161,141

Median home value

$336,000$246,100

Median gross rent

$2,000$1,859

La Plata

Population

9,37610,470

Median household income

$87,036$121,707

Median home value

$330,000$405,200

Median gross rent

$1,312$1,483

Age & race/ethnicity

Age distribution (share)

	Cobb Island	La Plata
Under 5	3.1%	2.7%
5 to 17	13.4%	16.6%
18 to 24	6.5%	12.0%
25 to 34	7.8%	10.1%
35 to 44	17.6%	12.3%
45 to 54	22.0%	15.8%
55 to 64	29.5%	14.2%
65 to 74	0.0%	8.1%
75 and over	0.0%	8.3%

Race & ethnicity (share)

	Cobb Island	La Plata
White (non-Hispanic)	96.0%	47.2%
Black or African American	0.0%	34.1%
American Indian & Alaska Native	0.0%	0.2%
Asian	1.7%	3.8%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.0%	0.0%
Two or more races	2.2%	7.9%
Hispanic or Latino	0.0%	6.8%

Educational attainment (age 25+)

Share of adults 25+

	Cobb Island	La Plata
No high school diploma	4.6%	7.1%
High school graduate	61.5%	24.0%
Some college or associate's	26.6%	34.9%
Bachelor's degree	1.6%	19.3%
Graduate or professional degree	5.8%	14.6%

Commute to work

How workers get to work (share)

	Cobb Island	La Plata
Drove alone	69.0%	67.3%
Carpooled	15.7%	11.8%
Public transit	5.3%	2.9%
Walked	0.0%	0.7%
Bicycle	0.0%	0.0%
Worked from home	7.2%	16.8%
Other means	2.9%	0.5%

Housing

Units in structure (share)

	Cobb Island	La Plata
1-unit, detached	100.0%	48.0%
1-unit, attached	0.0%	32.3%
2 to 4 units	0.0%	2.1%
5 to 19 units	0.0%	8.7%
20 or more units	0.0%	8.9%
Mobile home & other	0.0%	0.0%

Poverty & households

	Cobb Island	La Plata
Poverty rate	1.8%	3.5%
Average household size	2.83	2.69
Mean commute (minutes)	49	39
Median year structure built	1938	1992