ZIP Code 20878 - Gaithersburg Maryland

ZIP Code 20878 is located in Gaithersburg Maryland. Portions of 20878 are also in Darnestown and North Potomac and Travilah and Germantown. 20878 is entirely within Montgomery County. Regionally, 20878 is located in Metro DC.

Stats Demographics Geography Politics Schools Climate Related Pages

ZIP Code 20878 Quick Stats

ZIP Code NameGaithersburg
Primary CountyMontgomery County
ZIP Code TypeStandard
Population (2022)65,954
Area Code(s)240 / 301
Current Time

ZIP Code 20878 Map

20878 Demographics

20878 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in Maryland based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 20878 is White. The majority race/ethnicity attending public schools in 20878 is White. The current unemployment level in 20878 is 2.7%.

Population Growth Rate0.00%
Population Density3,157 People per Square Mile
Total Households22,517
Percentage High Income Households19.4%
Median Household Income (2021)$130,469
Average Adjusted Gross Income (2021)$434,240
Current Unemployment Rate (June 2024)2.7%
Majority Race/EthnictyWhite - 50.02%
Public School Majority Race/EthnictyWhite - 33.45%

20878 Race/Ethnicty Breakdown

Native American2080.32%
Hawaiian/Pac. Islander00%

20878 Public School Race/Ethnicty Breakdown

Native American140.16%
Hawaiian/Pac. Islander60.07%

20878 Educational Attainment Levels

Highest Education Level AttainedTotalPercentage
Less Than 1 Year of College1,3593.32%
Bachelor Degree13,68033.39%
High School Diploma4,0839.97%
No High School Diploma3330.81%
GED or Alternate3710.91%
1 or More Years of College4,09910%
Associates Degree2,0995.12%
Masters Degree9,65823.57%
Professional Degree2,0555.02%
Doctorate Degree3,2357.9%

20878 Geography

Adjacent ZIP Codes
Cities/Towns in 20878
RegionMetro DC
Metropolitan/Micropolitan Stat AreaWashington-Arlington-Alexandria, DC-VA-MD-WV
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area21 Square Miles

20878 Politics

US Congressional Districts in 20878
Maryland State Senate Districts in 20878
Maryland State House of Delegates Districts in 20878

20878 Weather and Climate Data

Plant Hardiness ZoneZone 7a: 0F to 5F
Average First Frost DateOctober 21 - 31
Average Last Frost DateApril 11 - 20
Koppen-Geiger Climate ZoneDfa - Humid Continental Hot Summers
Ecoregion64c - Piedmont Uplands

20878 Annual Climate Data

Avg Min Temp (°F)23263342516065635644362844
Avg Max Temp (°F)40455465748286847867564565
Avg Precip (In.)3.182.743.743.254.263.783.83.594.123.363.383.1842.38

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