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Summary for Vienna

About Vienna (Click for our profile page)

Located in: Dorchester County (see below)

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

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

ZIP Code: 21869<2>

Elevation: Near sea level<3>

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

Population

Year	Population
2019 Est:<4>	264 (2.58% decrease since 2010)
2010:	271 (3.21% decrease since 2000)
2000:	280

Total Area:<5> 0.19 sq. miles [0.5 km²]

Housing Units:<6> 143

GPS Coordinates (Latitude/Longitude)<7>

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

Lat: 38.485000° (or 38°29'5" N)

Lon: -75.826900° (or -75°49'36" W)

USGS Topo Map: Mardela Springs<8>

Federal GNIS/FIPS Codes for Vienna

GNIS ID: 2391460

FIPS State / Place Code: 24 / 80600

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

About Dorchester County

The town of Cambridge is the County Seat for {Dorchester County}.

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

Population

Year	Population
2019 Est:	31,929 (2.32% decrease since 2010)
2010	32,688 (6.57% increase since 2000)
2000:	30,674

Total Area: 983 sq. miles [2,546 km²] - of which 44.99% is water (442.2 sq. miles [1,145.4 km²])

Housing Units: 16,554

Official Website: https://dorchestermd.gov/

Federal GNIS/FIPS Codes for Dorchester

GNIS ID: 596495

FIPS State / County Code: 24 / 019

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

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 Vienna)

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 Vienna area will be assigned with one of these codes: 410, 443 or 667. As a result, placing a call in the Vienna 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 Vienna). When looking for a ZIP Code, whether Vienna 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 Vienna - 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 Vienna. 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 Vienna, 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 Vienna.