ZIP codes in St. Louis County, Missouri

St. Louis County, Missouri has 52 ZIP codes in this list, from 63005 to 63167. They cover 14 places, among them Saint Louis, Ballwin, Florissant and Chesterfield.

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ZIP code	Place	Land area (sq mi)	Map point
63005	Chesterfield	36.5	38.632, -90.614
63006	Chesterfield	no area	38.663, -90.577
63011	Ballwin	14.3	38.609, -90.560
63017	Chesterfield	19.3	38.649, -90.536
63021	Ballwin	21.8	38.577, -90.525
63022	Ballwin	no area	38.595, -90.546
63024	Ballwin	no area	38.595, -90.546
63025	Eureka	41.7	38.513, -90.631
63026	Fenton	25.3	38.502, -90.468
63031	Florissant	15.1	38.807, -90.340
63032	Florissant	no area	38.638, -90.427
63033	Florissant	12.2	38.795, -90.283
63034	Florissant	18.7	38.834, -90.294
63038	Glencoe	20.9	38.588, -90.664
63040	Grover	4.4	38.567, -90.631
63042	Hazelwood	10.4	38.781, -90.367
63043	Maryland Heights	12.5	38.723, -90.447
63044	Bridgeton	16.7	38.751, -90.416
63045	Earth City	1.8	38.769, -90.466
63074	Saint Ann	3.9	38.726, -90.386
63088	Valley Park	4.8	38.558, -90.492
63099	Fenton	no area	38.638, -90.427
63105	Saint Louis	2.5	38.646, -90.326
63114	Saint Louis	8.8	38.702, -90.364
63117	Saint Louis	2.4	38.630, -90.334
63119	Saint Louis	8.4	38.589, -90.348
63121	Saint Louis	6.8	38.707, -90.305
63122	Saint Louis	14.5	38.578, -90.426
63123	Saint Louis	12.5	38.548, -90.324
63124	Saint Louis	8.9	38.637, -90.378
63125	Saint Louis	9.9	38.522, -90.302
63126	Saint Louis	4.6	38.550, -90.381
63127	Saint Louis	5.8	38.535, -90.407
63128	Saint Louis	15.6	38.492, -90.377
63129	Saint Louis	20.9	38.457, -90.328
63130	Saint Louis	5.0	38.667, -90.323
63131	Saint Louis	13.6	38.617, -90.450
63132	Saint Louis	5.2	38.675, -90.375
63133	Saint Louis	3.3	38.678, -90.303
63134	Saint Louis	8.3	38.743, -90.341
63135	Saint Louis	6.2	38.750, -90.301
63136	Saint Louis	10.9	38.720, -90.270
63137	Saint Louis	7.1	38.747, -90.213
63138	Saint Louis	18.5	38.803, -90.207
63140	Saint Louis	0.5	38.737, -90.326
63141	Saint Louis	14.7	38.657, -90.454
63143	Saint Louis	2.0	38.611, -90.323
63144	Saint Louis	2.3	38.618, -90.349
63145	Saint Louis	no area	38.638, -90.427
63146	Saint Louis	15.5	38.703, -90.462
63151	Saint Louis	no area	38.638, -90.427
63167	Saint Louis	no area	38.638, -90.427

The ZIP code areas of St. Louis County add up to about 515 square miles of land (1,334 sq km) as the Census Bureau draws them. The largest is 63025 (Eureka), with 41.7 square miles.

Places with more than one code here: Saint Louis (30 codes), Ballwin (4 codes), Florissant (4 codes).

Using these codes

In an address, the ZIP code comes last, after the city and the two-letter state: Chesterfield, MO 63005.
Tap a ZIP code to open it in the look-up, with a copy button for the address line.
A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
"No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.

Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.

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