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Summary for Mount Airy

About Mount Airy (Click for our profile page)

Located in: Primarily Carroll County (see below). A portion of Mount Airy extends into Frederick County.

Typical Abbreviation: Mt. Airy

Time Zone: Mount Airy lies in the Eastern Time Zone (EST/EDT)

Telephone Area Codes: 410, 443 & 667<1>

ZIP Code: 21771<2>

Elevation: 810 feet [246.89 m] above sea level<3>

From the 2010 US Census (For more detail, see our Census Page for Mount Airy)

Population

Year	Population
2019 Est:<4>	9,489 (2.16% increase since 2010)
2010:	9,288 (44.56% increase since 2000)
2000:	6,425

Total Area:<5> 4.13 sq. miles [10.7 km²]

Housing Units:<6> 3,225

GPS Coordinates (Latitude/Longitude)<7>

For the purpose of mapping and calculating distances, we have chosen the following reference point for Mount Airy:

Lat: 39.376600° (or 39°22'35" N)

Lon: -77.154600° (or -77°9'16" W)

USGS Topo Map: Damascus<8>

Federal GNIS/FIPS Codes for Mount Airy

GNIS ID: 2391316

FIPS State / Place Code: 24 / 53875

(For more about Federal Codes, see our Misc Page for Mount Airy)

About Carroll County

The town of Westminster is the County Seat for {Carroll County}.

From the 2010 US Census (For more detail, see our Census Page for Carroll)

Population

Year	Population
2019 Est:	168,447 (0.74% increase since 2010)
2010	167,213 (10.81% increase since 2000)
2000:	150,897

Total Area: 452.7 sq. miles [1,172.5 km²] - of which 1.13% is water (5.09 sq. miles [13.2 km²])

Housing Units: 62,406

Official Website: https://www.carrollcountymd.gov/

Federal GNIS/FIPS Codes for Carroll

GNIS ID: 1696228

FIPS State / County Code: 24 / 013

(For more about Federal Codes, see our Misc Page for Mount Airy)

About Maryland

From the US Census

Population

Year	Population
2019 Est:	6,054,954 (4.87% increase since 2010)
2010:	5,773,552 (9.01% increase since 2000)
2000:	5,296,486

Websites for State of Maryland

Official Website: https://www.maryland.gov/

Tourism: https://www.visitmaryland.org/

Parks: https://dnr.maryland.gov/publiclands/

Fishing: https://dnr.maryland.gov/Fisheries/

Hunting: https://dnr.maryland.gov/wildlife/Pages/hunt_trap/home.aspx

Federal GNIS/FIPS Codes for State of Maryland

GNIS ID: 1714934

FIPS State: 24

(For more about Federal Codes, see our Misc Page for Mount Airy)

Footnotes ...

<1>	When there's a risk of an area code running out of phone numbers, an 'Overlay Area Code' is created that has the same geographic boundaries as the existing area code. In this case, the 410 code has been Overlayed with one of the following codes: 443 or 667. New phone numbers in the Mount Airy area will be assigned with one of these codes: 410, 443 or 667. As a result, placing a call in the Mount Airy area will require 10-digit dialing (where you enter both the area code and then the phone number).
<2>	ZIP Codes have been created by the United States Postal Service (USPS) as a way of grouping addresses to make delivery more efficient. The boundaries of the ZIP Code can be changed, re-assigned, eliminated or overlapped with other ZIP Codes. So keep in mind that any given ZIP Code is only 'loosely' associated with a town (such as Mount Airy). When looking for a ZIP Code, whether Mount Airy or elsewhere, it's always best to check the website of the United States Postal Service (USPS).
<3>	The elevation is an estimate for the area around Mount Airy - it will be higher in some places and lower in others.
<4>	Every year, the US Census Bureau creates a population estimate for the preceeding year. Keep in mind that this value is an estimate and not an actual count. The most recent Census estimate is for the year 2019.
<5>	The area value has been supplied by the US Census Bureau and it can be different than the geographic boundaries of Mount Airy. The value given by the Census Bureau reflects their statistical (or sampling) requirements. For example, if there is a cluster of people living just outside of the community's official boundary, the Census-defined area might be expanded to include that group.
<6>	A Housing Unit is a broad term for those places where people live (whether occupied or temporarily vacant), such as a house, an apartment, a mobile home, or an area that is considered as a separate living quarter. Separate living quarters (consisting of one or more rooms) are considered to be those places where people live, sleep and eat separately from others and that have access to the outside (either directly or by a shared hallway).
<7>	Longitude & latitude values may not be the geographic center of Mount Airy, rather it may be a prominent intersection or the center of population, etc. It will vary depending on the source.
<8>	Name of the USGS 7.5 Minute topographic map which includes Mount Airy.