100 Smallest ZIP Codes in the United States by Population in Harford County, Maryland

Explore the 100 smallest ZIP codes in the United States ranked by population using U.S. Census demographic data. This page lists ZIP codes located in Harford County, Maryland.

Rank	ZIP Code	City	State	Population
1	21130	PERRYMAN	MD	21
2	21010	GUNPOWDER	MD	216
3	21005	ABERDEEN PROVING GROUND	MD	2,703
4	21160	WHITEFORD	MD	2,716
5	21034	DARLINGTON	MD	2,958
6	21028	CHURCHVILLE	MD	2,974
7	21132	PYLESVILLE	MD	3,110
8	21161	WHITE HALL	MD	5,625
9	21017	BELCAMP	MD	6,177
10	21154	STREET	MD	7,059
11	21084	JARRETTSVILLE	MD	7,366
12	21047	FALLSTON	MD	13,419
13	21085	JOPPA	MD	16,590
14	21050	FOREST HILL	MD	18,076
15	21078	HAVRE DE GRACE	MD	19,820
16	21040	EDGEWOOD	MD	25,110
17	21001	ABERDEEN	MD	25,908
18	21015	BEL AIR	MD	30,485
19	21009	ABINGDON	MD	32,565
20	21014	BEL AIR	MD	37,097