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ZIP Code 21664

Primary City:Secretary, MD (View All Cities)
ZIP Type: PO Box (Reserve a PO Box)
County: Dorchester County
Timezone: Eastern (6:37pm)
Area code: 410 (Area Code Map)
Coordinates:38.608, -75.948
ZIP (~400 yard radius)

Cities in ZIP code 21664

The cities below are at least partially located in ZIP code 21664. In addition to the primary city for a ZIP code, USPS also publishes a list of other acceptable cities that can be used with ZIP code 21664. However, if you are mailing something to ZIP code 21664, you should not use any of the cities listed as unacceptable. Choose from the primary or acceptable cities when mailing your package or letter.

Primary city:
Secretary, MD

Stats and Demographics for the 21664 ZIP Code

ZIP code 21664 is located in east Maryland and covers a slightly less than average land area compared to other ZIP codes in the United States. It also has a slightly less than average population density.

The people living in ZIP code 21664 are primarily white. The number of middle aged adults is extremely large while the number of people in their late 20s to early 40s is extremely large. There are also a large number of single parents and a small number of single adults. The percentage of children under 18 living in the 21664 ZIP code is slightly higher than average compared to other areas of the country.

Population 539
Population Density 1,245 people per sq mi
Housing Units 236
Median Home Value $154,400
Land Area 0.43 sq mi
Water Area 0.03 sq mi
Occupied Housing Units 215
Median Household Income $52,604

Estimated Population over Time

Total Population by Age

Median Age: 44Male Median Age: 42Female Median Age: 45

Under 55-910-1415-1920-2425-2930-3435-3940-4445-4950-5455-5960-6465-6970-7475-7980-8485 Plus


 Male 265 49%
 Female 274 51%


 White 477 88.5%
 Black Or African American 34 6.3%
 American Indian Or Alaskan Native 2 0.4%
 Asian 1 0.2%
 Native Hawaiian & Other Pacific Islander 0 0.0%
 Other Race 20 3.7%
 Two Or More Races 5 0.9%

Head of Household by Age

15-2425-3435-4445-5455-6465-7475-8485 Plus

Families vs Singles

 Husband Wife Family Households 111 52%
 Single Guardian 48 22%
 Singles 43 20%
 Singles With Roommate 13 6%
Families vs Singles

Households with Kids

Average Household Size: 2
 Households without Kids 146 68%
 Households with Kids 69 32%
Households with Kids

Children by Age


Real Estate and Housing

ZIP code 21664 has a slightly less than average percentage of vacancies.

The majority of household are owned or have a mortgage. Homes in ZIP code 21664 were primarily built in 1939 or earlier or the 1970s. Looking at 21664 real estate data, the median home value of $154,400 is slightly less than average compared to the rest of the country. Rentals in 21664 are most commonly 2 bedrooms. The rent for 2 bedrooms is normally $500-$749/month including utilities. Prices for rental property include ZIP code 21664 apartments, townhouses, and homes that are primary residences.

Housing Type

 In Occupied Housing Units 538 99.8%
 Correctional Facility For Adults 0 0.0%
 Juvenile Facilities 0 0.0%
 Nursing Facilities 0 0.0%
 Other Institutional 0 0.0%
 College Student Housing 0 0.0%
 Military Quarters 0 0.0%
 Other Noninstitutional 1 0.2%
Housing Type

Year Housing was Built

Housing Occupancy

 Owned Households With A Mortgage 108 46%
 Owned Households Free & Clear 55 23%
 Renter Occupied Households 52 22%
 Households Vacant 21 9%
Housing Occupancy

Vacancy Reasons

 For Rent 2 10%
 Rented & Unoccupied 0 0%
 For Sale Only 7 33%
 Sold & Unoccupied 1 5%
 For Season Recreational Or Occasional Use 4 19%
 For Migrant Workers 0 0%
 Vacant For Other Reasons 7 33%
Vacancy Reasons

Owner Occupied Home Values

Rental Properties by Number of Rooms

 Studio Apartment 0 0%
 1 Bedroom 2 3%
 2 Bedroom 36 55%
 3+ Bedroom 27 42%
Rental Properties by Number of Rooms

Cost of Monthly Rent Including Utilities

Cost of a Studio Apartment

Cost of a 1 Bedroom

Cost of a 2 Bedroom

Cost of a 3+ Bedroom

Employment, Income, Earnings, and Work

The median household income of $52,604 is compared to the rest of the country.

As with most parts of the country, vehicles are the most common form of transportation to places of employment. In most parts of the country, the majority of commuters get to work in under half an hour. Most commuters in 21664 can expect to fall in that range. There are a slightly smaller percentage of employees that have to travel over 45 minutes to reach their place of employment.

Employment Status

 Worked Full-time with Earnings 217 36%
 Worked Part-time with Earnings 177 30%
 No Earnings 203 34%
Employment Status

Average Household Income over Time

Household Income

Annual Individual Earnings

Source of Earnings

 Worked Full-time with Earnings 217 36%
 Worked Part-time with Earnings 177 30%
 No Earnings 203 34%
Source of Earnings

Means Of Transportation To Work for Workers 16 and Over

 Car, truck, or van 303 93%
 Public transportation 0 0%
 Taxicab 0 0%
 Motorcycle 0 0%
 Bicycle, Walked, or Other Means 8 2%
 Worked at Home 15 5%
Means Of Transportation To Work for Workers 16 and Over

Travel Time to Work (In Minutes)

Schools and Education

The population has a much higher percentage of people with low education levels (less than high school) than normal. A very small percentage of people in the area attended and graduated college.

Educational Attainment For The Population 25 Years And Over

 Less than High School Diploma 36 14.2%
 High School Graduate 196 77.2%
 Associate's degree 3 1.2%
 Bachelor's degree 17 6.7%
 Master's degree 2 0.8%
 Professional school degree 0 0.0%
 Doctorate degree 0 0.0%
Educational Attainment For The Population 25 Years And Over

School Enrollment (Ages 3 to 17)

 Enrolled in Public School 177 76%
 Enrolled in Private School 30 13%
 Not Enrolled in School 27 12%
School Enrollment (Ages 3 to 17)

Schools in ZIP Code 21664

ZIP Code 21664 is in the Dorchester County Public Schools. There are 1 different elementary schools and high schools with mailing addresses in ZIP code 21664.

Warwick Elementary School
155 Main St
Secretary, MD 21664
Grade Level: Primary/Elementary
District: Dorchester County Public Schools

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