Oakland, MD 21550 ZIP Code Profile


ZIP Code 21550: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Oakland, MD 21550

Acceptable Alternative
Crellin, MD 21550
Deer Park, MD 21550
Hutton, MD 21550
Loch Lyn Hght, MD 21550
Loch Lynn Heights, MD 21550
Mnt Lake Park, MD 21550
Mountain Lake Park, MD 21550
Mt Lake Park, MD 21550
Mtn Lk Park, MD 21550

  • ZIP Code Type: STANDARD
  • County: Garrett County
  • Centroid: Latitude 39.338, Longitude -79.402
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 666
  • PO Box Addresses: 338
  • Residential Addresses: 6,392
    • Multi-Family Addresses: 296
    • Single Family Addresses: 6,096

The ZIP Code maps and database are updated 4 times per year.
Database updated: May 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic 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 demographic data.


21550 ZIP Code Map

Search the map for:

Oakland, MD 21550 Data & Demographics (As of July 1, 2017)


Total Population 14,231
Daytime Population: Workers 8,299
Daytime Population: Residents 7,231
Total Daytime Population (TDP) 15,530
Ratio TDP/Total Population1 1.09
Population in Households 13,953
Population in Familes 11,458
Population in Group Qrtrs 278
Population Density2 69
Diversity Index3 8


Median Household Income $40,351
Average Household Income $55,293
Per Capita Income $22,688


Total Housing Units 8,452 (100%)
Owner Occupied HU 4,172 (49.4%)
Renter Occupied HU 1,521 (18.0%)
Vacant Housing Units 2,759 (32.6%)
Median Home Value $174,448
Average Home Value $219,487


Total Households 5,693
Average Household Size 2.45
Family Households 3,867
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.15% 0.05%
Households 0.01% -0.03%
Families -0.12% -0.13%
Median Household Income   1.1%
Per Capita Income   2.73%

Oakland, MD 21550 - Peer Comparisons by Rank and Percentile

The table below compares 21550 to the other 456 ZIP Codes in Maryland by rank and percentile using July 1, 2017 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 # 153 67th
Population Density # 390 15th
Diversity Index # 437 4th
Median Household Income # 429 6th
Per Capita Income # 419 8th

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

Maryland Research Tools

Maryland Census Data Comparison Tool

Compare Maryland Census Data
Highest or Lowest: