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ZIP Code 5: 21771 - MOUNT AIRY, MD

ZIP Code 21771 is the postal code in MOUNT AIRY, MD. Besides the basic information, it also lists the full ZIP code and the address of ZIP code 21771. Whatsmore, there is more information related to ZIP Code 21771. For example, nearby ZIP code around ZIP Code 21771, etc.

ZIP 21771 Basic Information

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The basic information of ZIP Code 21771 is as follows, including: country, county, city, FIPS and etc.

StateCountyCityZIP Code 5
MD - MarylandCarroll CountyMOUNT AIRY21771
MD - MarylandFrederick CountyMOUNT AIRY21771
MD - MarylandHoward CountyMOUNT AIRY21771
MD - MarylandMontgomery CountyMOUNT AIRY21771

📌It means zip code 21771 is across counties/cities.

What is the plus 4 zip code for 21771 ZIP Code? Below is the detail.

21771 ZIP+4 Code List

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What are the 4 digit zip extensions of ZIP Code 21771? ZIP code 21771 has many plus 4 codes, and each plus 4 code corresponds to one or more addresses. Below we list all the ZIP+4 codes and their addresses in the ZIP Code 21771. You can find a 9-digit ZIP Code by a full address.

ZIP Code 5 Plus 4 Address
21771-0381 PO BOX 381 (From 381 To 440), MOUNT AIRY, MD
21771-0441 PO BOX 441 (From 441 To 500), MOUNT AIRY, MD
21771-0501 PO BOX 501 (From 501 To 560), MOUNT AIRY, MD
21771-0561 PO BOX 561 (From 561 To 620), MOUNT AIRY, MD
21771-0621 PO BOX 621 (From 621 To 660), MOUNT AIRY, MD
21771-0661 PO BOX 661 (From 661 To 700), MOUNT AIRY, MD
21771-0701 PO BOX 701 (From 701 To 780), MOUNT AIRY, MD
21771-0781 PO BOX 781 (From 781 To 860), MOUNT AIRY, MD
21771-0861 PO BOX 861 (From 861 To 960), MOUNT AIRY, MD
21771-0961 PO BOX 961 (From 961 To 1080), MOUNT AIRY, MD

If you can't find the 21771 plus 4 zip code you need on this page, we recommend you to use the the feature of Quick Select.

Post Office in ZIP Code 21771

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MOUNT AIRY is the only post office in ZIP Code 21771. You can find the address, phone number, and interactive map below. Click to view the service and service hours about MOUNT AIRY.

  • MOUNT AIRY Post Office more-info

    Address 505 WINDY KNOLL DR, MOUNT AIRY, MD, 21771-9998

    Phone 301-829-1199

    *Lot Parking Available

How to write a U.S. envelope?

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  • First, you need to fill in the recipient's mailing information in the center of the envelope. The first line is the recipient's name, the second line is the street address with a detailed house number, and the last line is the city, state abbr, and ZIP Code.

    Second, write the sender's information on the left top corner of the envelope. If your mail cannot be delivered, it will return to the sender's address.

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

    Here is the envelope example below.

    ZIP Code: 21771

What does each digit of ZIP Code 21771 stand for?

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  • The first digit designates a national area, which ranges from zero for the Northeast to nine for the far West.

    The 2-3 digits represent a sectional center facility in that region.

    The last two digits designate small post offices or postal zones.

    ZIP Code: 21771

Random Address in ZIP 21771

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ZIP Code 21771 has 3,179 real random addresses, you can clicking the picture below to get random addresses in ZIP Code 21771.

ZIP Code:21771

ZIP 21771 Online Map

ZIP 21771 Online Map

This is online map of the address MOUNT AIRY, Carroll County, Maryland. You may use button to move and zoom in / out. The map information is for reference only.

ZIP 21771 NearBy ZIP Code

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The Nearby ZIP Codes are 21797, 21770, 20872, 21774, and 21792, you can find ZIP codes in a 25km radius around ZIP Code 21771 and the approximate distance between the two ZIP codes.
The data has a slight deviation for your reference only.

ZIP CodeDistance (Kilo Meters)
217977.166
217709.146
2087210.723
2177410.863
2179211.503
2172312.925
2175413.405
2176214.568
2176514.947
2173815.19
2088216.187
2177616.326
2178416.392
2087116.473
2173717.381
2179117.88
2179418.182
2170118.606
2083319.113
2170419.245
2087619.659
2103619.995
2179320.934
2110421.929
2087922.138
2179822.249
2088622.307
2170522.33
2170922.33
2088322.451
2083822.945
2177524.403
2175924.412
2087524.467
2171724.507
2104224.639
2115724.702
2086224.783
2104824.793
2084124.884
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Library in ZIP Code 21771

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MOUNT AIRY BRANCH is the only library in ZIP Code 21771. You can find the address and phone number below. Click the link to find more information about MOUNT AIRY BRANCH.

School in ZIP Code 21771

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This is the ZIP Code 21771 - School page list. Its detail School Name, Address, City, State, ZIP Code is as below.

School NameAddressCityStateGradesZIP Code
Mount Airy Middle 102 Watersville RdMount Airy Maryland5-821771
Twin Ridge Elementary 1106 Leafy Hollow CircleMt Airy MarylandPK-521771
Mount Airy Elementary 405 N Main StMount Airy MarylandKG-421771
ZIP Code 5: 21771 - MOUNT AIRY

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