ZIP Code Tabulation Area · Maryland

ZIP Code 20678: Calvert County, MD

ZIP Code 20678 (Calvert County, Maryland) has an estimated 12,752 residents in 4,858 households. The median household income is $125,732, the median home value is $455,100 and the median gross rent is $1,388/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Total population

12,752

Margin of error ±926

Median household income

$125,732

Margin of error ±$12,236

Median home value

$455,100

Margin of error ±$25,874

Median gross rent

$1,388/mo

Margin of error ±$168

Median age

38.4 yrs

Margin of error ±1.9 yrs

Mean travel time to work

39.9 min

Margin of error ±8.2 min

How ZIP 20678 compares with Maryland and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 2067838.4 yrsMaryland39.4 yrsUnited States38.9 yrs

Median household income

ZIP 20678$125,732Maryland$103,678United States$80,734

Per capita income

ZIP 20678$54,751Maryland$52,979United States$44,673

Poverty rate

ZIP 206787.5%Maryland9.4%United States12.5%

Unemployment rate

ZIP 206782.5%Maryland4.9%United States5.2%

Bachelor's degree or higher

ZIP 2067830.3%Maryland43.4%United States35.7%

Median home value

ZIP 20678$455,100Maryland$419,900United States$332,700

Median gross rent

ZIP 20678$1,388/moMaryland$1,705/moUnited States$1,413/mo

Owner-occupied homes

ZIP 2067878.4%Maryland67.6%United States65.2%

Mean travel time to work

ZIP 2067839.9 minMaryland31.1 minUnited States26.4 min

Worked from home

ZIP 2067813.1%Maryland19.3%United States15.1%

All figures for ZIP 20678

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 20678 — ACS 2020–2024 5-year estimates
Measure	ZIP 20678	Margin of error	Maryland	United States
Total population	12,752	±926	6,206,011	334,922,499
Median age	38.4 yrs	±1.9 yrs	39.4 yrs	38.9 yrs
Households	4,858	±376	2,362,928	129,227,496
Median household income	$125,732	±$12,236	$103,678	$80,734
Per capita income	$54,751	±$4,035	$52,979	$44,673
Poverty rate	7.5%	±2.3 pts	9.4%	12.5%
Unemployment rate	2.5%	±1.1 pts	4.9%	5.2%
Bachelor's degree or higher	30.3%	±4.0 pts	43.4%	35.7%
Median home value	$455,100	±$25,874	$419,900	$332,700
Median gross rent	$1,388/mo	±$168	$1,705/mo	$1,413/mo
Owner-occupied homes	78.4%	±4.9 pts	67.6%	65.2%
Mean travel time to work	39.9 min	±8.2 min	31.1 min	26.4 min
Worked from home	13.1%	±3.3 pts	19.3%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 20678
Group	ZIP 20678	Maryland	United States
White alone, not Hispanic or Latino	66.4%	46.6%	57.4%
Black or African American alone, not Hispanic or Latino	14.2%	28.9%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.1%	0.1%	0.5%
Asian alone, not Hispanic or Latino	2.9%	6.5%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	1.0%	0.7%	0.6%
Two or more races, not Hispanic or Latino	7.7%	4.6%	4.3%
Hispanic or Latino (of any race)	7.6%	12.5%	19.3%

Where ZIP 20678 is

State: Maryland
Main county: Calvert County
Largest overlapping place: Prince Frederick (8% of the ZIP's land area)
Land area: 44.87 sq mi· about 284 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Calvert County

20615 Broomes Island, MD 20629 Solomons, MD 20639 Calvert County, MD 20657 Calvert County, MD 20676 Calvert County, MD 20685 Calvert County, MD 20688 Solomons, MD 20689 Calvert County, MD 20732 Chesapeake Beach, MD 20736 Calvert County, MD 20754 Dunkirk, MD

See every ZIP code in Maryland, or compare ZIP 20678 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.