ZIP Codes Box

Howard County, Maryland ZIP codes

24ZIP codes
20Cities and towns
342,538People in ZIP areas
227, 240, 301Area codes

Howard County is in Maryland and the Eastern Time zone. ZIP codes don’t follow county lines exactly, so a ZIP code listed here can reach into a neighboring county.

All ZIP codes in Howard County

ZIP codeCityTypePopulationMedian income
20588DhsUnique––
20723LaurelStandard36,866$138,113
20759FultonStandard6,624$250,001
20763SavageStandard2,601$76,842
20777HighlandStandard3,221$226,146
20794JessupStandard16,814$116,406
21029ClarksvilleStandard13,607$243,542
21036DaytonStandard2,569$218,036
21041Ellicott CityPO Box only––
21042Ellicott CityStandard43,327$190,061
21043Ellicott CityStandard48,525$148,125
21044ColumbiaStandard44,114$135,057
21045ColumbiaStandard40,034$118,563
21046ColumbiaStandard15,608$127,813
21075ElkridgeStandard37,363$135,303
21104MarriottsvilleStandard6,052$191,804
21150SimpsonvillePO Box only––
21163WoodstockStandard7,539$134,672
21723CooksvilleStandard669$241,250
21737GlenelgStandard2,474$250,001
21738GlenwoodStandard3,696$250,001
21765LisbonPO Box only––
21794West FriendshipStandard2,192$231,466
21797WoodbineStandard8,643$189,241

Cities and towns in Howard County

Area codes in Howard County

Questions

How many ZIP codes are in Howard County, MD?
Howard County has 24 ZIP codes, 20 of them standard ZIP codes for street addresses.
What cities are in Howard County?
Howard County ZIP codes cover Columbia, Ellicott City, Clarksville, Cooksville, Dayton, Dhs, Elkridge and Fulton and 12 other places.
What area code is Howard County, MD?
Howard County uses area codes 227, 240, 301, 410, 443 and 667.
What time zone is Howard County in?
Howard County is in Eastern Time.

Other Maryland counties