Gaithersburg, MD 20877 ZIP Code Profile

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Gaithersburg, MD | Montgomery Village, MD

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ZIP Code 20877: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Gaithersburg, MD 20877

Acceptable Alternative
Montgomery Village, MD 20877
Montgomry Vlg, MD 20877

  • ZIP Code Type: STANDARD
  • Businesses Addresses: 1,615
  • Single Family Addresses: 6,165
  • Multi-Family Addresses: 7,026
  • County: Montgomery County
  • Centroid: Latitude 39.142, Longitude -77.193
  • 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.


20877 ZIP Code Map

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Gaithersburg, MD 20877 Data & Demographics (As of July 1, 2017)


Total Population 39,450
Daytime Population: Workers 21,722
Daytime Population: Residents 19,436
Total Daytime Population (TDP) 41,158
Ratio TDP/Total Population1 1.04
Population in Households 38,972
Population in Familes 30,420
Population in Group Qrtrs 478
Population Density2 6,245
Diversity Index3 89


Median Household Income $68,848
Average Household Income $89,180
Per Capita Income $29,937


Total Housing Units 13,638 (100%)
Owner Occupied HU 5,870 (43.0%)
Renter Occupied HU 7,177 (52.6%)
Vacant Housing Units 591 ( 4.3%)
Median Home Value $350,868
Average Home Value $362,368


Total Households 13,047
Average Household Size 2.99
Family Households 8,716
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.
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.75% 1.46%
Households 1.56% 1.34%
Families 1.49% 1.3%
Median Household Income   2.14%
Per Capita Income   2.59%

Gaithersburg, MD 20877 - Peer Comparisons by Rank and Percentile

The table below compares 20877 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 # 42 91st
Population Density # 33 93rd
Diversity Index # 6 99th
Median Household Income # 259 43rd
Per Capita Income # 311 32nd

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

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