Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

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zipcodes.pro — STATE/MO/COUNTY/ST-LOUIS

St. Louis County, MO ZIP codes

There are 51 ZIP codes in St. Louis County, MO, in 14 towns, from 63005 to 63167. The largest are 63021 (Ballwin), 63129 (Saint Louis) and 63123 (Saint Louis).

The county seat is Clayton.

ZIP codes
51
Towns
14
County seat
Clayton
County FIPS
29189
Population
995,569
Median household income
$82,936
Land area
508 sq mi
Area codes
314, 557, 636
Metro area
St. Louis

St. Louis County ZIP codes by town

Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.

Map of St. Louis County ZIP codes

630056300663011630176302163022630246302563031630326303363034630386304063042630436304463045630746308863099631056311463117631196312163122631236312463125631266312763128631296313063131631326313363134631356313663137631386314063141631436314463145631466315163167

The ZIP codes of St. Louis County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.

St. Louis County in numbers

About 995,569 people live in St. Louis County, in 413,849 households, the most populous of Missouri's 115 counties. The median household income is $82,936 a year, 17% above the Missouri median of $70,702 (US: $80,734). The median owner-occupied home is valued at $276,800 (20% above the Missouri median), and median gross rent is $1,209 a month. The median age is 40.3; 47.4% of adults 25 and over hold a bachelor's degree or higher (32.4% across Missouri); the average commute takes 23 minutes.

Population995,569St. Louis995,569
Households413,849St. Louis413,849
Median age40.3St. Louis40.3Missouri39.0US 38.9
Median household income$82,936St. Louis$82,936Missouri$70,702US $80,734
Median home value$276,800St. Louis$276,800Missouri$230,300US $332,700
Median gross rent$1,209St. Louis$1,209Missouri$1,033US $1,413
Bachelor's degree or higher47.4%St. Louis47.4%Missouri32.4%US 35.7%
Mean commute23.1 minSt. Louis23.1 minMissouri23.5 minUS 26.4 min
Population density1,960 / sq miSt. Louis1,960 / sq mi

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.

Largest towns in St. Louis County

Largest towns in St. Louis County
TownZIP codesPopulation
Saint Louis 30 288,512
Florissant 4 51,773
Chesterfield 3 49,574
Ballwin 4 31,279
Maryland Heights 1 27,880
Hazelwood 1 25,114
Eureka 1 13,081
St. Ann 1 12,811
Bridgeton 1 11,369
Grover 1 8,526
Glencoe 1 7,107
Valley Park 1 6,795
Fenton 1 4,088

Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.

Neighbouring counties

Counties that share a ZIP code with St. Louis County.

Not sure you are in St. Louis County? What county am I in? answers from your location, near a county line included.

Every ZIP code in St. Louis County, with figures

ZIP codes in St. Louis County
ZIP City Type Population Median income Median home
63005 Chesterfield , MO Standard 19,779 $198,469 $701,600
63006 Chesterfield , MO No street area — — —
63011 Ballwin , MO Standard 35,920 $124,454 $400,900
63017 Chesterfield , MO Standard 43,243 $127,095 $466,100
63021 Ballwin , MO Standard 55,666 $120,177 $349,500
63022 Ballwin , MO No street area — — —
63024 Ballwin , MO No street area — — —
63025 Eureka , MO Standard 19,508 $125,676 $391,500
63031 Florissant , MO Standard 50,196 $70,811 $154,300
63032 Florissant , MO No street area — — —
63033 Florissant , MO Standard 43,056 $66,776 $173,700
63034 Florissant , MO Standard 18,908 $103,905 $239,300
63038 Glencoe , MO Standard 7,107 $186,450 $580,800
63040 Grover , MO Standard 8,526 $133,220 $426,600
63042 Hazelwood , MO Standard 17,813 $49,453 $149,400
63043 Maryland Heights , MO Standard 21,924 $91,509 $227,600
63044 Bridgeton , MO Standard 10,324 $77,819 $238,100
63045 Earth City , MO Standard 0 — —
63074 Saint Ann , MO Standard 15,793 $51,610 $132,700
63088 Valley Park , MO Standard 8,226 $65,769 $247,100
63099 Fenton , MO No street area — — —
63105 Saint Louis , MO Standard 18,875 $116,439 $766,300
63114 Saint Louis , MO Standard 33,969 $55,870 $116,800
63117 Saint Louis , MO Standard 9,261 $90,921 $348,700
63119 Saint Louis , MO Standard 34,181 $106,183 $351,100
63121 Saint Louis , MO Standard 25,008 $42,701 $95,600
63122 Saint Louis , MO Standard 41,634 $136,385 $474,300
63123 Saint Louis , MO Standard 49,077 $77,055 $219,400
63124 Saint Louis , MO Standard 10,839 $193,942 $988,600
63125 Saint Louis , MO Standard 33,294 $61,624 $178,600
63126 Saint Louis , MO Standard 15,452 $98,852 $306,300
63127 Saint Louis , MO Standard 5,268 $122,663 $583,400
63128 Saint Louis , MO Standard 30,540 $92,359 $338,700
63129 Saint Louis , MO Standard 51,553 $94,888 $295,600
63130 Saint Louis , MO Standard 28,910 $85,823 $316,100
63131 Saint Louis , MO Standard 17,935 $225,493 $778,100
63132 Saint Louis , MO Standard 14,283 $87,385 $417,000
63133 Saint Louis , MO Standard 6,569 $39,293 $65,100
63134 Saint Louis , MO Standard 13,059 $44,680 $94,700
63135 Saint Louis , MO Standard 18,381 $52,328 $107,400
63136 Saint Louis , MO Standard 40,929 $41,154 $84,400
63137 Saint Louis , MO Standard 19,684 $43,422 $82,900
63138 Saint Louis , MO Standard 18,233 $56,096 $139,100
63140 Saint Louis , MO Standard 316 $45,568 $84,100
63141 Saint Louis , MO Standard 20,932 $133,851 $620,900
63143 Saint Louis , MO Standard 8,975 $65,861 $236,300
63144 Saint Louis , MO Standard 9,505 $104,438 $304,700
63145 Saint Louis , MO No street area — — —
63146 Saint Louis , MO Standard 30,678 $84,756 $301,700
63151 Saint Louis , MO No street area — — —
63167 Saint Louis , MO No street area — — —

Cite this page

zipcodes.pro. “St. Louis County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/mo/county/st-louis

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