Glenelg, MD 21737 ZIP Code Profile

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Glenelg, MD

ZIP Code 21737: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Glenelg, MD 21737

  • ZIP Code Type: STANDARD
  • County: Howard County
  • Centroid: Latitude 39.259, Longitude -77.003
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 144
  • PO Box Addresses: 127
  • Residential Addresses: 622
    • Multi-Family Addresses: 0
    • Single Family Addresses: 622

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.


21737 ZIP Code Map

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Glenelg, MD 21737 Data & Demographics (As of July 1, 2017)


Total Population 1,977
Daytime Population: Workers 507
Daytime Population: Residents 990
Total Daytime Population (TDP) 1,497
Ratio TDP/Total Population1 0.76
Population in Households 1,968
Population in Familes 1,859
Population in Group Qrtrs 9
Population Density2 390
Diversity Index3 39


Median Household Income $179,081
Average Household Income $244,841
Per Capita Income $70,143


Total Housing Units 587 (100%)
Owner Occupied HU 525 (89.4%)
Renter Occupied HU 40 ( 6.8%)
Vacant Housing Units 22 ( 3.7%)
Median Home Value $866,704
Average Home Value $881,190


Total Households 565
Average Household Size 3.48
Family Households 501
Average Family Size 4
  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 6.04% 2.49%
Households 5.55% 2.43%
Families 5.54% 2.4%
Median Household Income   0.5%
Per Capita Income   1.32%

Glenelg, MD 21737 - Peer Comparisons by Rank and Percentile

The table below compares 21737 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 # 314 31st
Population Density # 230 50th
Diversity Index # 225 51st
Median Household Income # 9 98th
Per Capita Income # 18 96th

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

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