Gwynn Oak, MD 21207 ZIP Code Profile

Related Place Profiles:
Pikesville, MD | Woodlawn, MD

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ZIP Code 21207: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Gwynn Oak, MD 21207

Acceptable Alternative
Baltimore, MD 21207
Pikesville, MD 21207
Woodlawn, MD 21207

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 861
  • Single Family Addresses: 15,936
  • Multi-Family Addresses: 3,243
  • County: Baltimore County
  • Centroid: Latitude 39.324, Longitude -76.714
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes

ZIP Code 21207 has segments in 2 Counties / Independent Cities (Baltimore, Baltimore City).

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.


21207 ZIP Code Map

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Gwynn Oak, MD 21207 Data & Demographics (As of July 1, 2016)


Total Population 49,389
Population in Households 48,989
Population in Familes 38,659
Population in Group Qrtrs 400
Population Density1 4,721
Diversity Index2 33


Total Households 19,241
Average Household Size 2.55
Family Households 12,263
Average Family Size 3


Total Housing Units 21,252 (100%)
Owner Occupied HU 11,093 (52.2%)
Renter Occupied HU 8,148 (38.3%)
Vacant Housing Units 2,011 ( 9.5%)
Median Home Value $192,953
Average Home Value $206,795


Median Household Income $49,099
Average Household Income $58,973
Per Capita Income $23,270
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population -0.01% 0.2%
Households -0.09% 0.12%
Families -0.21% 0.05%
Median Household Income   -0.64%
Per Capita Income   0.96%
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.

Gwynn Oak, MD 21207 - Peer Comparisons by Rank and Percentile

The table below compares 21207 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 # 20 96th
Population Density1 # 44 91st
Diversity Index2 # 270 40th
Median Household Income # 396 13th
Per Capita Income # 403 12th

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