Zip Code Database List
Account Login
Find ZIP+4 of Address

Find the ZIP Code, County, and +4 of any U.S. Address

FREE ZIP Code Finder

Find info on any U.S. ZIP Code

Other FREE Lookups

Lookup ZIP Code of any City, State, County or Area Code

FREE Radius Search

Find all ZIP Codes

FREE Distance Calc

Calculate the distance between two U.S. or Canadian ZIP codes.

ZIP Code Database - Facts & Stats

Data Last Updated: December 1, 2021

ZIP Codes for City of Marriottsville, MD

Marriottsville, MD Covers 1 ZIP Code

ZIP CodeTypeCountyPopulationArea Code(s)
ZIP Code 21104StandardCarroll4,601443 / 410

Timezone(s):Eastern (GMT -05:00)
Counties:CARROLL, MD
Population:4,601 (More Details)
Male Population:2,330
Female Population:2,271
Median Age:42
ZIP Codes:1
Area Codes:2
Total Area:453 square miles (county)
Land Area:448 square miles (county)
Water Area:5 square miles (county)

Marriottsville, MD Demographic Information *

There is no Census data for the city of MARRIOTTSVILLE, MD. We have pulled information for the ZIP Code 21104 instead.
Total population4,601
Male population2,330
Female population2,271
Median age (years)41.8
White Population4,058
Black Population182
Indian Population7
Asian Population239
Hawaiian Population0
Hispanic Population73
Median age (Male)40.4
Median age (Female)43.2
Total households1,465
Family households (families)1,264
Average household size3.13
Average family size3.38
Total housing units1,506
* Demographic data is based on 2010 Census.

Marriottsville, MD Other Information

  • Located in CARROLL County, Maryland
  • Marriottsville, MD is also known as:

199 Cities within 30 miles of Marriottsville, MD Products


  1. U.S. Postal Service [Last Updated: 12/1/2021],
  2. Internal Data Creation [Last Updated: 12/1/2021],
  3. U.S. Geological Survey [Updated as needed],
  4. U.S. Census [Updated Yearly],
  5. U.S. Census 2010 [Decennial] [Last Updated: 1/1/2010],