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ZIP code

21104

Marriottsville, MD

STANDARD

21104 covers Marriottsville in Howard County, with 5,786 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

5,786

Median household income

$199,803

Median home value

$659,700

U.S. Census Bureau, ACS 2019–2023 5-year (vintage 2023). Geography: ZCTA 21104. Methodology

ZIP code map of 21104

Census ZCTA boundary for ZIP 21104 in Marriottsville, Maryland
Census ZCTA boundary for ZIP 21104 in Marriottsville, 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 21104

Type

STANDARD

City

Marriottsville

County

Howard County

Timezone

America/New_York

Area codes

410, 443, 667

Land area

17.1 sq mi

Water area

0.81 sq mi

Households

1,985

Acceptable cities: Henryton, Marriottsvl, Woodstock

More enterprise fields

Timezone
America/New_York
Area Codes
410, 443, 667
World Region
NA
Country
US

Commercial ZIP directory · not ACS

Commercial ZIP directory population_count for ZCTA 21104. Not ACS. Methodology

People in 21104

Race

  • White4,447
  • Black or African American255
  • American Indian or Alaska Native10
  • Asian616
  • Other race40
  • Two or more races318

Hispanic or Latino (any race): 172

Age

  • Under 10543
  • 10 to 19838
  • 20 to 29540
  • 30 to 39480
  • 40 to 49574
  • 50 to 59880
  • 60 to 69943
  • 70 to 79692
  • 80 and older196

Income and housing in 21104

Poverty rate

2.5%

Median earnings

$92,258

Median household income

$199,803

Median home value

$659,700

Education

  • High school graduate98.3%
  • Bachelor's degree63.3%
  • Graduate degree25.0%

Places covering 21104

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

38.0% of this ZIP is outside city limits (a real overlap row, not missing data).

Population history for 21104

IRS populationACS population
6,7093,354020052023

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
20055,296
20065,020
20075,129
20085,012
20095,010
20105,102
20115,3485,112
20125,0185,190
20134,7155,300
20144,9445,310
20154,9585,520
20164,6145,650
20174,7775,820
20185,3005,720
20195,7625,760
20206,0295,850
20216,2125,750
20226,0775,880
20235,786

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

ZIP codes near 21104

12 nearest ZIP centroids (any distance)

  1. 21163Woodstock3.5 miPop 7,031 · Income $131,154
  2. 21794West Friendship4.4 miPop 2,326 · Income $223,833
  3. 21042Ellicott City4.9 miPop 43,021 · Income $190,504
  4. 21723Cooksville5.0 miPop 587 · Income $250,000+
  5. 21784Sykesville5.0 miPop 37,813 · Income $141,228
  6. 21133Randallstown5.8 miPop 31,847 · Income $84,248
  7. 21244Windsor Mill7.3 miPop 39,545 · Income $84,849
  8. 21136Reisterstown7.3 miPop 33,778 · Income $106,559
  9. 21738Glenwood7.7 miPop 3,668 · Income $230,429
  10. 21797Woodbine8.4 miPop 8,772 · Income $185,435
  11. 21043Ellicott City8.7 miPop 47,134 · Income $141,846
  12. 21737Glenelg9.2 miPop 2,384 · Income $250,000+

ZIP centroids within 2 miles

No other ZIP codes within 2 miles of 21104, measured by Census internal-point centroids. Try a wider radius.

ZIPs within 2 miles of this place

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21104 Marriottsville, MD

Looking up ZIP codes within 2 miles of 21104 Marriottsville, MD, measured by centroid distance.

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ZIP code 21104 FAQ

What city is ZIP code 21104 in?
21104 is in Marriottsville, MD.
What county is 21104 in?
21104 is in Howard County.
What is the median household income in 21104?
The median household income in 21104 is $199,803.
Which ZIP codes are near 21104?
Use the radius tool on this page to list ZIP codes within a chosen distance of 21104.