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ZIP code

20877

Gaithersburg, MD

STANDARD

20877 covers Gaithersburg in Montgomery County, with 39,068 people in the ACS 2023 estimate.

Figures are for the Census ZIP Code Tabulation Area (ZCTA), which is not the same as a USPS ZIP code. A PO Box or unique ZIP may have no ZCTA and no demographics. Methodology

ACS 2023 population

39,068

Median household income

$86,103

Median home value

$462,500

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 20877. Methodology

ZIP code map of 20877

Census ZCTA boundary for ZIP 20877 in Gaithersburg, Maryland
Census ZCTA boundary for ZIP 20877 in Gaithersburg, Maryland. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
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About ZIP code 20877

Type

STANDARD

City

Gaithersburg

County

Montgomery County

Timezone

America/New_York

Area codes

227, 240, 301

Land area

5.6 sq mi

Water area

0.03 sq mi

Households

13,599

Median gross rent

$1,862

Acceptable cities: Montgomery Village, Montgomry Vlg

More enterprise fields

Timezone
America/New_York
Area Codes
227, 240, 301
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 20877. Not ACS. Methodology

People in 20877

Race

  • White8,880
  • Black or African American7,721
  • American Indian or Alaska Native514
  • Asian4,943
  • Native Hawaiian and Pacific Islander53
  • Other race10,583
  • Two or more races4,883

Hispanic or Latino (any race): 16,230

Age

  • Under 105,042
  • 10 to 194,922
  • 20 to 295,426
  • 30 to 395,882
  • 40 to 494,868
  • 50 to 594,263
  • 60 to 693,557
  • 70 to 791,880
  • 80 and older1,737

Income and housing in 20877

Poverty rate

11.3%

Median earnings

$39,341

Median household income

$86,103

Median home value

$462,500

Median gross rent

$1,862

Education

  • High school graduate76.3%
  • Bachelor's degree35.2%
  • Graduate degree15.0%

Places covering 20877

Cities and places — Population overlap

Share of this ZIP/ZCTA’s population located within each place, based on ZIP Code Database place-overlap data. This is a population measure, not land-area overlap or the Census-place population.

ZIP Code Database place-overlap table, field percent_of_zip_population_in_place, keyed by place_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

Counties — Population overlap

Share of this ZIP/ZCTA’s population located within each county, based on ZIP Code Database county-overlap data. This is a population measure, not land-area overlap or the Census county population.

ZIP Code Database county-overlap table, field percent_of_zip_population_in_county, keyed by county_geoid. Not ACS 2019–2023. Overlap vintage is the shipped overlap table and is separate from ACS. Methodology

10.9% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 20877

IRS populationACS population
42,19321,097020052023

Hover the chart or read the table below (Year | ACS | IRS).

Population history. Year | ACS population | IRS population. ACS and IRS are separate series. Blank cells mean that source did not publish a count for the year.
YearACS populationIRS population
200528,504
200628,769
200729,991
200830,537
200931,988
201033,580
201131,27934,551
201233,51936,360
201334,88638,260
201436,81637,850
201536,72437,850
201638,14936,220
201738,80535,920
201838,88535,970
201938,42334,570
202037,94834,580
202137,09433,200
202238,52434,400
202339,068

ACS: U.S. Census Bureau American Community Survey 5-year estimates. IRS: Statistics of Income ZIP Code data.

ZIP codes near 20877

12 nearest ZIP centroids (any distance)

  1. 20880Washington Grove0.9 miPop 590 · Income $160,417
  2. 20899Gaithersburg1.3 miPop 106 · Income $23,917
  3. 20879Gaithersburg2.4 miPop 26,120 · Income $105,109
  4. 20855Derwood3.2 miPop 16,557 · Income $147,708
  5. 20886Montgomery Village3.4 miPop 34,419 · Income $98,767
  6. 20850Rockville3.6 miPop 50,365 · Income $122,691
  7. 20878Gaithersburg3.7 miPop 65,236 · Income $142,062
  8. 20876Germantown5.1 miPop 26,511 · Income $113,329
  9. 20851Rockville5.8 miPop 14,660 · Income $113,951
  10. 20853Rockville5.9 miPop 31,438 · Income $157,168
  11. 20874Germantown5.9 miPop 62,233 · Income $109,648
  12. 20832Olney6.1 miPop 25,766 · Income $166,892

ZIP centroids within 2 miles

ZIP centroids within 2 miles of 20877, measured by Census internal point.
ZIPCityStateDistance (miles)ACS populationMedian income
20880Washington GroveMD0.9 mi590$160,417
20899GaithersburgMD1.3 mi106$23,917

ZIPs within 2 miles of this place

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20877 Gaithersburg, MD

Looking up ZIP codes within 2 miles of 20877 Gaithersburg, MD, measured by centroid distance.

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ZIP code 20877 FAQ

What city is ZIP code 20877 in?
20877 is in Gaithersburg, MD.
What county is 20877 in?
20877 is in Montgomery County.
What is the median household income in 20877?
The median household income in 20877 is $86,103.
Which ZIP codes are near 20877?
Use the radius tool on this page to list ZIP codes within a chosen distance of 20877.