100 Smallest ZIP Codes in the United States by Population in St. Louis County, Missouri

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 St. Louis County, Missouri.

Rank	ZIP Code	City	State	Population
1	63140	SAINT LOUIS	MO	291
2	63127	SAINT LOUIS	MO	5,235
3	63133	SAINT LOUIS	MO	6,763
4	63038	WILDWOOD	MO	7,153
5	63088	VALLEY PARK	MO	8,473
6	63040	WILDWOOD	MO	8,662
7	63144	SAINT LOUIS	MO	9,027
8	63143	SAINT LOUIS	MO	9,097
9	63117	SAINT LOUIS	MO	9,691
10	63044	BRIDGETON	MO	10,821
11	63124	SAINT LOUIS	MO	10,997
12	63132	SAINT LOUIS	MO	13,995
13	63134	SAINT LOUIS	MO	14,023
14	63126	SAINT LOUIS	MO	15,201
15	63074	SAINT ANN	MO	15,888
16	63025	EUREKA	MO	17,708
17	63042	HAZELWOOD	MO	18,143
18	63131	SAINT LOUIS	MO	18,531
19	63138	SAINT LOUIS	MO	18,602
20	63105	SAINT LOUIS	MO	19,003
21	63034	FLORISSANT	MO	19,031
22	63005	CHESTERFIELD	MO	19,734
23	63135	SAINT LOUIS	MO	19,764
24	63137	SAINT LOUIS	MO	20,390
25	63141	SAINT LOUIS	MO	20,781
26	63043	MARYLAND HEIGHTS	MO	22,123
27	63121	SAINT LOUIS	MO	24,126
28	63130	SAINT LOUIS	MO	28,978
29	63128	SAINT LOUIS	MO	30,168
30	63146	SAINT LOUIS	MO	31,348
31	63125	SAINT LOUIS	MO	32,750
32	63114	SAINT LOUIS	MO	34,341
33	63119	SAINT LOUIS	MO	34,732
34	63011	BALLWIN	MO	36,515
35	63033	FLORISSANT	MO	41,037
36	63122	SAINT LOUIS	MO	41,416
37	63136	SAINT LOUIS	MO	42,385
38	63017	CHESTERFIELD	MO	42,686
39	63026	FENTON	MO	44,824
40	63123	SAINT LOUIS	MO	50,347
41	63031	FLORISSANT	MO	50,568
42	63129	SAINT LOUIS	MO	51,893
43	63021	BALLWIN	MO	55,944