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ZIP code

20851

Rockville, MD

STANDARD

20851 covers Rockville in Montgomery County, with 14,660 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

14,660

Median household income

$113,951

Median home value

$523,800

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 20851. Methodology

ZIP code map of 20851

Census ZCTA boundary for ZIP 20851 in Rockville, Maryland
Census ZCTA boundary for ZIP 20851 in Rockville, 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 20851

Type

STANDARD

City

Rockville

County

Montgomery County

Timezone

America/New_York

Area codes

227, 240, 301

Land area

2.5 sq mi

Water area

0.00 sq mi

Households

5,263

Median gross rent

$1,924

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 20851. Not ACS. Methodology

People in 20851

Race

  • White5,503
  • Black or African American1,380
  • American Indian or Alaska Native156
  • Asian2,391
  • Native Hawaiian and Pacific Islander10
  • Other race2,845
  • Two or more races2,042

Hispanic or Latino (any race): 4,878

Age

  • Under 101,654
  • 10 to 191,684
  • 20 to 292,091
  • 30 to 392,593
  • 40 to 491,906
  • 50 to 591,880
  • 60 to 691,484
  • 70 to 79678
  • 80 and older357

Income and housing in 20851

Poverty rate

9.2%

Median earnings

$50,482

Median household income

$113,951

Median home value

$523,800

Median gross rent

$1,924

Education

  • High school graduate84.6%
  • Bachelor's degree41.4%
  • Graduate degree20.4%

Places covering 20851

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

Population history for 20851

IRS populationACS population
16,7288,364020052023

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
200512,304
200612,039
200712,474
200812,678
200913,170
201013,527
201113,14613,855
201213,66514,200
201313,64114,740
201414,35214,570
201514,93014,490
201614,97213,890
201715,18413,790
201815,10613,590
201915,48913,300
202014,51913,110
202114,84012,730
202214,65912,970
202314,660

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

ZIP codes near 20851

12 nearest ZIP centroids (any distance)

  1. 20852Rockville1.8 miPop 47,857 · Income $121,496
  2. 20853Rockville2.2 miPop 31,438 · Income $157,168
  3. 20896Garrett Park3.3 miPop 890 · Income $250,000+
  4. 20850Rockville3.3 miPop 50,365 · Income $122,691
  5. 20906Silver Spring3.6 miPop 71,216 · Income $92,964
  6. 20855Derwood4.1 miPop 16,557 · Income $147,708
  7. 20895Kensington4.2 miPop 19,042 · Income $169,527
  8. 20902Silver Spring4.8 miPop 53,170 · Income $111,408
  9. 20814Bethesda5.1 miPop 30,822 · Income $150,401
  10. 20880Washington Grove5.2 miPop 590 · Income $160,417
  11. 20892Bethesda5.4 miPop 0 · Income —
  12. 20889Bethesda5.4 miPop 210 · Income —

ZIP centroids within 2 miles

ZIP centroids within 2 miles of 20851, measured by Census internal point.
ZIPCityStateDistance (miles)ACS populationMedian income
20852RockvilleMD1.8 mi47,857$121,496

ZIPs within 2 miles of this place

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20851 Rockville, MD

Looking up ZIP codes within 2 miles of 20851 Rockville, MD, measured by centroid distance.

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ZIP code 20851 FAQ

What city is ZIP code 20851 in?
20851 is in Rockville, MD.
What county is 20851 in?
20851 is in Montgomery County.
What is the median household income in 20851?
The median household income in 20851 is $113,951.
Which ZIP codes are near 20851?
Use the radius tool on this page to list ZIP codes within a chosen distance of 20851.