Oldtown, MD 21555 ZIP Code Profile

Related Place Profiles:
Oldtown, MD

Camera Icon Photos of the local Oldtown, MD area   |   Oldtown, MD 21555 Real Estate

ZIP Code 21555: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Oldtown, MD 21555

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 13
  • Single Family Addresses: 707
  • Multi-Family Addresses: 0
  • County: Allegany County
  • Centroid: Latitude 39.596, Longitude -78.561
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

Neighborhood Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting certain data.


21555 ZIP Code Map

Search the map for:

Oldtown, MD 21555 Data & Demographics (As of July 1, 2016)


Total Population 1,836
Population in Households 1,830
Population in Familes 1,522
Population in Group Qrtrs 6
Population Density1 20
Diversity Index2 9


Total Households 733
Average Household Size 2.5
Family Households 514
Average Family Size 3


Total Housing Units 1,015 (100%)
Owner Occupied HU 594 (58.5%)
Renter Occupied HU 139 (13.7%)
Vacant Housing Units 282 (27.8%)
Median Home Value $163,333
Average Home Value $163,678


Median Household Income $50,571
Average Household Income $55,146
Per Capita Income $22,143
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.3% -0.41%
Households -0.28% -0.36%
Families -0.4% -0.47%
Median Household Income   -1.3%
Per Capita Income   0.32%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Oldtown, MD 21555 - Peer Comparisons by Rank and Percentile

The table below compares 21555 to the other 455 ZIP Codes in Maryland by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 319 30th
Population Density1 # 440 4th
Diversity Index2 # 427 7th
Median Household Income # 384 16th
Per Capita Income # 415 9th

Additional comparisons and rankings can be made with a VERY EASY TO USE Maryland Census Data Comparison Tool.