US Gazetteer > Maryland Gazetteer > Maryland ZIP Codes > Marriottsville, MD 21104

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Preferred Name, USPS
Marriottsville, MD 21104
Acceptable Alternative
Marriottsvl, MD 21104
Woodstock, MD 21104
Not Acceptable, USPS
Henryton, MD 21104

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Weather forecast ZIP Code 21104

ZIP Code 21104 has segments in 3 Counties / Independent Cities (Baltimore, Carroll, Howard).

The 21104 ZIP Code is centered1 in Carroll County at latitude 39.344 and longitude -76.907 (Panoramio Photos). It is a standard type ZIP Code. Carroll County is in the Eastern Time Zone (UTC -5 hours) and observes daylight savings time.

The population in ZIP Code Tabulation Area (ZCTA) 21104 was 4,061 with 1,321 housing units; a land area land area of 16.21 sq. miles; a water area of 0 sq. miles; and a population density of 250.53 people per sq. mile for Census 2000. Demographic Profile

Marriottsville, MD 21104 Map (Marker is ZIP Code Centroid)

Local Search, 21104 ZIP Code| Distance & Driving Directions

Nearby Cities, Towns & Census Designated Places

Henryton, MD (< 0.1 mile)
Marriottsville, MD (< 0.1 mile)
Woodstock, MD (1.9 miles ESE)
Alpha, MD (1.9 miles SW)
Mountview, MD (2.4 miles SW)
Granite, MD (2.7 miles E)
Carroll Highlands, MD (3.1 miles N)
Shervettes Corner, MD (3.6 miles N)
Mayfield, MD (3.6 miles S)
West Friendship, MD (3.6 miles SW)

Nearby Neighborhoods, Subdivisions & Other Small Populated Places

Driver, MD (< 0.1 mile)
Everlea, MD (1.4 miles SW)
Henryton Heights, MD (1.4 miles SSW)
Prospect Hills, MD (1.4 miles NNE)
Salopha, MD (1.9 miles WNW)
Breezewood Farms, MD (1.9 miles SE)
Crest Acres, MD (2.4 miles SSW)
River Park Estates, MD (2.4 miles W)
Valley Anne Estates, MD (2.4 miles SE)
Heritage Farms, MD (2.4 miles WSW)

ZIP Codes - Key Concepts

  1. ZIP Codes are categories for grouping mailing addresses and are not exact geographic regions.
  2. The centroid of a ZIP Code may be in one County and the associated city/town in another.
  3. In rural areas, a single ZIP Code may be used for cities and towns in several different Counties / Independent Cities.
  4. ZIP Code "areas" can overlap, be subsets of each other, or be artificial constructs with no geographic area.
  5. ZIP Codes are only loosely tied to cities.

1 Keeping the above key concepts in mind, what we informally refer to as the "center" of a ZIP Code is most often actually the centroid of a polygon.