The Census Designated Place of Arnold contains 1 unique zip code(s). Arnold covers 10.85 square miles and with a population of 23422 has a population density of 2159.7 people per square mile.
Zipcodes within Arnold City Limits
21012 Arnold, MD
2010 Population:21317 		Display Map of Zip Code 21012 with Arnold City Limits
Zipcodes within Arnold City Limits With Different Zip Code Name
Display Map of Zip Code 21012 with Arnold City Limits21146 Severna Park, MD
2010 Population:26705
Display Map of Zip Code 21012 with Arnold City Limits21409 Annapolis, MD
2010 Population:20064
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