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21660 ZIP Code

ZIP Code: 21660 Ridgely

Extra Details of ZIP Code 21660

ZIP Code 21660
Zip Code Type Standard
State Maryland - MD
Official Zip Code Name Ridgely
Primary County Caroline
Area Code (s) 410
Racial Majority White 79.56%
Elevation Range 30 - 56 ft.

Data: State Statistics Office | Updated on: Jun 09, 2026

How to write a U.S. envelope?

The first step is to write the recipient address:
First, you need to fill in the recipient's mailing information in the center of the envelope. The first line is also the recipient's name. When writing the recipient's name, pay attention to the title, and write the person's title and name in the middle of the envelope. On the second line, write the recipient's full address, including any associated apartment or suite numbers. The more detailed the better. The third line writes the recipient's city, state, and zip code, this information is the last line of the address.

The second step is to write the reply address:
The return address is three lines, the first line will be the sender's name. The second line writes the sender's detailed address, including the street address, please remember to write the house number. On the third line write your city, state abbr, and zip code.

Finally, don't forget to stick the stamp on the right top corner. Otherwise, the letter will not go into the delivery process.

How to Read Zip Code

Population and Employment

population

4,361

Unemployment Rate
3.6%
Poverty Rate
11%
Non-Citizens
3.8%

Location of Zip Code 21660

On this map you can see exactly where postcodes are located within Germany.

Gender & Age Statistics

Gender

  • Male
    46%
  • Female
    54%

Age

  • <10 years
    12%
  • 10-17 years
    10%
  • 18-34 years
    16%
  • 35-64 years
    44%
  • 65+ years
    18%

21660 Demographics

Racial Diversity

  • White
    74%
  • African American
    14%
  • Hispanic
    6%
  • American Indian or Alaska native
    0%
  • Asian & Other race
    2%

Education Levels

  • Master's degree or above
    7%
  • Bachelor's degree
    11%
  • Some college or associate degree
    24%
  • High school diploma or vocational degree
    39%
  • Less than high school diploma
    18%

21660 Income

Median Household Income

$62,883

National $64,994

Household Income Brackets

  • <$30k
    16%
  • $30-$44k
    17%
  • $45-$84k
    28%
  • $85-$149k
    29%
  • $150k+
    10%

Median Individual Income

$29,882

National $32,197

Individual Income Brackets

  • <$20k
    29%
  • $20-$34k
    26%
  • $35-$74k
    19%
  • $75k+
    27%

Online Business Directory

Whether you're looking for hotels, hairdressers, doctors or lawyers in Ridgely, MD. You can find these phone numbers in our phone book. With us, you can easily book a restaurant or hotel in your location. You can also find reputable real estate agents and insurance agents. Everything you need is easily accessible here!

Capital Linguists
2301 Shorefield RD #334, Silver Spring, MD, , USA, 20902

Will Stein Group
1 Park Place, Annapolis, 21401

Law Offices of Marc A. Ominsky
10632 Little Patuxent Pkwy #249, Columbia, 21044

Mane Center for Advanced Hair Restoration
5530 Wisconsin Avenue Suite 1147, Chevy Chase, 20815

Bernie’s Bookkeeping Services
3520 Cage Road, saint leonard, 20685

Cloudbunks Hostel
2937 N Calvert, Baltimore, 21218

Assisting Hands-Serving Potomac
4853 Cordell Avenue, Suite PH 10A, Bethesda, 20814

Acting with Max
1006 Cowpens Ave, Baltimore, 21286

Schools Serving Ridgely

North Caroline High School
10990 River Rd Ridgely, MD 21660

Caroline Career & Technology Center
10855 Central Ave Ridgely, MD 21660

Ridgely Elementary School
118 N Central Ave Ridgely, MD 21660

Library Ridgely

Ridgely Public Library
134 N. Main Street Ridgely, TN 38080

Museum Ridgely

Adkins Arboretum
Po Box 100 Ridgely, MD 21660-0100

Hospital Ridgely

University Ridgely