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20678 ZIP Code

ZIP Code: 20678 Prince Frederick

Extra Details of ZIP Code 20678

ZIP Code 20678
Zip Code Type Standard
State Maryland - MD
Official Zip Code Name Prince Frederick
Primary County Calvert
Area Code (s) 410
Racial Majority White 65.87%
Elevation Range 43 - 112 ft.

Data: State Statistics Office | Updated on: Apr 21, 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

12,418

Unemployment Rate
2.3%
Poverty Rate
7.5%
Non-Citizens
1.1%

Location of Zip Code 20678

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

Gender & Age Statistics

Gender

  • Male
    47%
  • Female
    53%

Age

  • <10 years
    10%
  • 10-17 years
    9%
  • 18-34 years
    25%
  • 35-64 years
    39%
  • 65+ years
    17%

20678 Demographics

Racial Diversity

  • White
    65%
  • African American
    22%
  • Hispanic
    7%
  • American Indian or Alaska native
    0%
  • Asian & Other race
    3%

Education Levels

  • Master's degree or above
    10%
  • Bachelor's degree
    14%
  • Some college or associate degree
    31%
  • High school diploma or vocational degree
    36%
  • Less than high school diploma
    9%

20678 Income

Median Household Income

$92,479

National $64,994

Household Income Brackets

  • <$30k
    14%
  • $30-$44k
    12%
  • $45-$84k
    16%
  • $85-$149k
    31%
  • $150k+
    27%

Median Individual Income

$40,962

National $32,197

Individual Income Brackets

  • <$20k
    19%
  • $20-$34k
    26%
  • $35-$74k
    32%
  • $75k+
    23%

Online Business Directory

Whether you're looking for hotels, hairdressers, doctors or lawyers in Prince Frederick, 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!

Renken Remodeling
200 E Patrick St, Frederick, 21701

Liz Viernes Photography
4617 Dustin Road, Burtonsville, 20866

Wireless Citi Inc
529 S Camp Meade Rd, B107, Linthicum Heights, 21090

IHOP Salisbury
2732 N Salisbury Blvd, Salisbury, 21801

tubi.tv
mexico, texas, houston, 77018

Excalibur Moving and Storage
640C Lofstrand Ln, Rockville, 20850

Koons Silver Spring Mazda
3111 Automobile Blvd #3, Silver Spring, 20904

UCM Rug Cleaning
9 S Carey St, Baltimore, MD, Baltimore, 21223

Schools Serving Prince Frederick

Library Prince Frederick

Calvert Library Prince Frederick
850 Costley Way Prince Frederick, MD 20678

Calvert Library
850 Costley Way Prince Frederick, MD 20678

Calvert Mobile Services
850 Costley Way Prince Frederick, MD 20678

Museum Prince Frederick

Calvert County Historical Society
70 Church St Prince Frederick, MD 20678

Hospital Prince Frederick

Calverthealth Medical Center
100 Hospital Road Prince Frederick, MD 20678

University Prince Frederick