US ZIP Code Map
Loading ZIP borders…

Layers

ZIP code

20879

Gaithersburg, MD

STANDARD

20879 covers Gaithersburg in Montgomery County, with 26,120 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

26,120

Median household income

$105,109

Median home value

$433,500

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 20879. Methodology

ZIP code map of 20879

Census ZCTA boundary for ZIP 20879 in Gaithersburg, Maryland
Census ZCTA boundary for ZIP 20879 in Gaithersburg, Maryland. A ZCTA is not the same as a USPS ZIP code. Boundaries: U.S. Census Bureau. Methodology · Data sources
Download PNG

About ZIP code 20879

Type

STANDARD

City

Gaithersburg

County

Montgomery County

Timezone

America/New_York

Area codes

227, 240, 301

Land area

8.6 sq mi

Water area

0.04 sq mi

Households

9,008

Median gross rent

$1,895

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 20879. Not ACS. Methodology

People in 20879

Race

  • White7,716
  • Black or African American5,656
  • American Indian or Alaska Native264
  • Asian4,219
  • Native Hawaiian and Pacific Islander24
  • Other race4,733
  • Two or more races3,564

Hispanic or Latino (any race): 8,472

Age

  • Under 103,216
  • 10 to 193,425
  • 20 to 293,690
  • 30 to 393,875
  • 40 to 493,298
  • 50 to 593,676
  • 60 to 693,178
  • 70 to 791,381
  • 80 and older437

Income and housing in 20879

Poverty rate

6.6%

Median earnings

$49,269

Median household income

$105,109

Median home value

$433,500

Median gross rent

$1,895

Education

  • High school graduate87.4%
  • Bachelor's degree41.6%
  • Graduate degree17.3%

Places covering 20879

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

22.8% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 20879

IRS populationACS population
30,10115,050020052023

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
200524,220
200623,873
200724,527
200824,148
200924,334
201024,443
201124,57024,711
201224,63025,010
201325,26925,690
201425,59225,650
201525,58425,680
201626,25925,580
201726,59925,370
201827,87125,290
201926,16425,010
202026,34325,080
202127,24424,180
202227,48925,050
202326,120

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

ZIP codes near 20879

12 nearest ZIP centroids (any distance)

  1. 20880Washington Grove1.9 miPop 590 · Income $160,417
  2. 20877Gaithersburg2.4 miPop 39,068 · Income $86,103
  3. 20886Montgomery Village2.6 miPop 34,419 · Income $98,767
  4. 20855Derwood2.7 miPop 16,557 · Income $147,708
  5. 20899Gaithersburg3.2 miPop 106 · Income $23,917
  6. 20882Gaithersburg4.2 miPop 13,661 · Income $186,964
  7. 20876Germantown4.6 miPop 26,511 · Income $113,329
  8. 20832Olney4.7 miPop 25,766 · Income $166,892
  9. 20850Rockville5.5 miPop 50,365 · Income $122,691
  10. 20853Rockville5.9 miPop 31,438 · Income $157,168
  11. 20878Gaithersburg6.0 miPop 65,236 · Income $142,062
  12. 20833Brookeville6.2 miPop 7,868 · Income $203,631

ZIP centroids within 2 miles

ZIP centroids within 2 miles of 20879, measured by Census internal point.
ZIPCityStateDistance (miles)ACS populationMedian income
20880Washington GroveMD1.9 mi590$160,417

ZIPs within 2 miles of this place

Default is 2 miles. Distances are between ZIP centroids. Widen the radius if nothing is in range.

20879 Gaithersburg, MD

Looking up ZIP codes within 2 miles of 20879 Gaithersburg, MD, measured by centroid distance.

Selected —

ACS population

—

Households

—

Avg median income

—

Avg median home

—

Selected ZIP codes

One ZIP code per line. Leading zeros preserved.

ZIP code 20879 FAQ

What city is ZIP code 20879 in?
20879 is in Gaithersburg, MD.
What county is 20879 in?
20879 is in Montgomery County.
What is the median household income in 20879?
The median household income in 20879 is $105,109.
Which ZIP codes are near 20879?
Use the radius tool on this page to list ZIP codes within a chosen distance of 20879.