Data Last Updated: April 1, 2025

Saint Louis County, MO ZIP Codes

ZIP Codes: Shows how many general ZIP Codes, PO Boxes, Unique (Business), and Multi County ZIP Codes are associated with Saint Louis, MO.	58 ZIP Codes (44 General, 6 PO Box, 2 Unique, & 6 Multi County) [More Details]
Area Codes: The Telephone Area Codes that are associated with Saint Louis, MO. Area Codes are used in the North American Numbering Plan (NANP) to facilitate phone routing. There are approximately 350 area codes in use in the United States.	314, 557, 636
Timezone: Time zone designation within the U.S. Please note that not all areas in the U.S. observe daylight saving time which can affect actual local time for this city. There are 7 standard time zones which are, from west to east: Hawaii-Aleutian, Alaska, Pacific, Mountain, Central, Eastern, Atlantic. Also included in U.S. Territories are Samoa, Guam and Palau.	Central
Local Time: The current local time for each timezone. If more than 1 time zone for this area, all local times will be shown. Counties can cross timezones, so more than 1 may be shown.	12:00:00 AM
Population: The population of Saint Louis, MO from the U.S. Census 2020. Included are U.S. Citizens, permanent residents, temporary migrants, and undocumented individuals. The total population represents people who live in the city, not just those present while the Census was being completed.	1,004,125 [More Details]
FIPS: FIPS stands for Federal Information Processing Standards, which are a set of publicly announced standards for computer systems. A county FIPS code is a unique numeric identifier for a county in the United States, assigned by the National Institute of Standards and Technology (NIST). County FIPS codes have five digits, with the first two digits identifying the state and the last 3 indicating the county.	29189
CBSA: A Core Based Statistical Area (CBSA) is the recognized term for a region that functions around an urban core with a population of at least 10,000 people, according to the standards set by the Office of Management and Budget (OMB) in 2000. A CBSA is divided into two subsets: Metro and Micro, and these classifications are determined by population density. A Micro area is identified by a population ranging between 10,000 to 50,000, while a Metro area is defined as having a population that exceeds 50,000.	St. Louis, MO-IL
Land Area: The approximate amount of land area covered by Saint Louis, MO in square miles. The Land Area provided by the Census Bureau is based on geographic boundaries that include the mainland, islands, inland, coastal, Great Lakes, and territorial waters associated with each city.	508 square miles
Water Area: The approximate amount of water area covered by Saint Louis, MO in square miles. Calculations by the Census Bureau for Water Area take into account inland bodies of water, coastal regions, Great Lakes, and territorial sea waters. This encompasses features such as lakes, reservoirs, rivers, and coastal water bodies.	15 square miles
Coordinates: The latitude/longitude centroid coordinates for Saint Louis County, MO.	38.640651, -90.443424
Quick Link: Copy the direct link to the Saint Louis, MOCounty page and use anywhere you like!	https://www.zip-codes.com/county/mo-saint-louis.asp

Saint Louis, MO ZIP Code Boundaries

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Saint Louis County, MO Covers 58 ZIP Codes

ZIP Code	Classification	City	Population	% of Population
ZIP Code 63005	General	Chesterfield	19,235	1.92%
ZIP Code 63006	P.O. Box	Chesterfield	0	0.00%
ZIP Code 63011	General	Ballwin	37,495	3.73%
ZIP Code 63017	General	Chesterfield	42,773	4.26%
ZIP Code 63021	General	Ballwin	56,680	5.64%
ZIP Code 63022	P.O. Box	Ballwin	0	0.00%
ZIP Code 63024	P.O. Box	Ballwin	0	0.00%
ZIP Code 63025	General	Eureka	16,742	1.67%
ZIP Code 63026	General	Fenton	44,648	4.45%
ZIP Code 63031	General	Florissant	47,609	4.74%
ZIP Code 63032	P.O. Box	Florissant	0	0.00%
ZIP Code 63033	General	Florissant	43,175	4.30%
ZIP Code 63034	General	Florissant	18,428	1.84%
ZIP Code 63038	General	Wildwood	6,775	0.67%
ZIP Code 63040	General	Wildwood	8,857	0.88%
ZIP Code 63042	General	Hazelwood	19,646	1.96%
ZIP Code 63043	General	Maryland Heights	22,362	2.23%
ZIP Code 63044	General	Bridgeton	10,587	1.05%
ZIP Code 63045	General	Earth City	7	0.00%
ZIP Code 63049 *	General	High Ridge	16,929	--
ZIP Code 63069 *	General	Pacific	15,542	--
ZIP Code 63074	General	Saint Ann	15,233	1.52%
ZIP Code 63088	General	Valley Park	8,221	0.82%
ZIP Code 63099	Unique	Fenton	0	0.00%
ZIP Code 63103 *	General	Saint Louis	9,411	--
ZIP Code 63105	General	Saint Louis	18,846	1.88%
ZIP Code 63112 *	General	Saint Louis	18,954	--
ZIP Code 63114	General	Saint Louis	35,237	3.51%
ZIP Code 63117	General	Saint Louis	9,660	0.96%
ZIP Code 63119	General	Saint Louis	34,793	3.47%
ZIP Code 63120 *	General	Saint Louis	7,213	--
ZIP Code 63121	General	Saint Louis	22,909	2.28%
ZIP Code 63122	General	Saint Louis	41,319	4.11%
ZIP Code 63123	General	Saint Louis	50,989	5.08%
ZIP Code 63124	General	Saint Louis	11,375	1.13%
ZIP Code 63125	General	Saint Louis	32,816	3.27%
ZIP Code 63126	General	Saint Louis	15,851	1.58%
ZIP Code 63127	General	Saint Louis	5,642	0.56%
ZIP Code 63128	General	Saint Louis	29,728	2.96%
ZIP Code 63129	General	Saint Louis	53,432	5.32%
ZIP Code 63130	General	Saint Louis	29,454	2.93%
ZIP Code 63131	General	Saint Louis	18,241	1.82%
ZIP Code 63132	General	Saint Louis	14,657	1.46%
ZIP Code 63133	General	Saint Louis	6,444	0.64%
ZIP Code 63134	General	Saint Louis	12,737	1.27%
ZIP Code 63135	General	Saint Louis	19,584	1.95%
ZIP Code 63136	General	Saint Louis	41,767	4.16%
ZIP Code 63137	General	Saint Louis	18,765	1.87%
ZIP Code 63138	General	Saint Louis	18,852	1.88%
ZIP Code 63140	General	Saint Louis	258	0.03%
ZIP Code 63141	General	Saint Louis	21,995	2.19%
ZIP Code 63143	General	Saint Louis	9,686	0.96%
ZIP Code 63144	General	Saint Louis	9,596	0.96%
ZIP Code 63145	P.O. Box	Saint Louis	0	0.00%
ZIP Code 63146	General	Saint Louis	31,459	3.13%
ZIP Code 63147 *	General	Saint Louis	8,499	--
ZIP Code 63151	P.O. Box	Saint Louis	0	0.00%
ZIP Code 63167	Unique	Saint Louis	0	0.00%

* Indicates a Multi County ZIP Code. These ZIP Codes partially cross over into Saint Louis, MO, but will mostly cover area in a different County. Not included in % of Population calculations.

Important Saint Louis, MO Information

Saint Louis County, MO Covers 58 ZIP Codes. This includes 44 General ZIP Codes, 6 PO Box ZIP Codes, and 2 Unique (reserved for Business and Volume Mail Receivers). There are also 6 Multi County ZIP Codes. These records are assigned a different primary county, but they partially cover area in Saint Louis County.

The population for Saint Louis County is 1,004,125, according to the U.S. Census. Population Density is 1,976.62 persons per square mile. With 444,653 Housing Units, the Average Household Size is 2.39 persons. There are 411,076 Family Households with an Average Family Size of 3.12 persons. 5.27% of the population is without Health Insurance. The 62.42% Employment Rate is 2.62% above the national average of 59.8%.692,473 people aged 25+ have some educational achievement, with 46.93% (or 324,957 people) having attained a Bachelor's Degree or higher.More Demographics are available below.

There are 3 area codes serving this area including314, 557 and 636. Saint Louis is also located in the Central timezone and the current local time is shown above.

Saint Louis is part of the St. Louis, MO-IL Core Based Statistical Area (CBSA). Its CBSA Code is 41180.It is classified as a metro area, which means the combined population is 50,000 or more (at its core).

CBSAs are defined by the OMB as geographic areas that have at least one core with a population of 10,000 or more (for a micro area) and adjacent territory with a high degree of social and economic integration. CBSA codes are commonly used to accurately file Medicare claims and to verify applicable incentives using a patient's ZIP Code.

ZIP Codes in Saint Louis, MO have 438,128 Residential mailboxes and 28,991 Business mailboxes.There are 31,956 businesses with a total of 627,294 employees. That is an average of 19.6 employees per business. Annual payroll for these businesses is $44,525,989,000. Other Demographics

Saint Louis County Demographic Profile

Population & People

Total Population

1,004,125

Income

Median Household Income

$81,340

Housing

Total Housing Units

444,653

Health

Without Healthcare Coverage

5.27%

Business & Economy

Total Businesses

31,956

Families

Total Households

411,076

Employment

Employment Rate

62.42%

Education

Bachelor's Degree or Higher

46.93%

Total Population: Total number of people from the 2020 U.S. Census for Saint Louis, MO. This reflects the exact count of this area at that point in time, not future estimates, regardless of citizenship or immigration status. It is intended to count all persons living within the geographic area, not just those present on the day of the census.	1,004,125
Current Population Estimate: This field gives the estimated household population for All ZIP Codes in Saint Louis, MO. This is derived from known delivery information, household occupancy rates, household size, and more to come up with an accurate estimation for the current population. IMPORTANT: This does not include population totals for persons in nursing homes, correctional facilities, or other institutions. This is an estimation of the household population based on US Postal Service delivery information.	1,023,171
Total Households: Total number of Households from the 2020 U.S. Census for Saint Louis, MO. A Household includes everyone living in a residential housing unit. This includes families, roommates in a single residence, or a person living alone.	411,076
Total Housing Units: The total number of Housing Units is the number of occupied units + the number of vacant units. Ownership is defined by whether the unit is occupied by an owner or by a tenant. Owner occupancy means that the owner lives in the unit. This value comes from the 2020 U.S. Census and is not a projection or estimate.	444,653
Average Household Size: The Average Household Size, is obtained by dividing the number of people in Households (excluding those in group quarters, nursing home, prisons, and dorm rooms) by the number of Households. A Household includes everyone living in a residential unit. Those who do not live in a household are classified as living in group accommodation. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	2.39
Average Family Size: Average Family Size is calculated by dividing the number of people in a Family Household by the number of Family Households. The U.S. Census Bureau defines family households as households consisting of two or more individuals who are related by birth, marriage, or adoption. They also may include other unrelated people. Non-family households consist of people who live alone or who share their residence with unrelated individuals. The Average Family Size only looks at the households classified as Family Households. This value is an estimate from the U.S. Census ACS (American Community Survey) and is updated yearly.	3.12

Other Saint Louis Demographics

# Residential Mailboxes: The number of active residential delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	438,128
# Business Mailboxes: The number of active business delivery mailboxes and centralized units. This excludes PO Boxes and all other contract box types.	28,991
Total Delivery Receptacles: The total number of delivery receptacles. This includes curb side mailboxes, centralized units, PO Boxes, NDCBU, and contract boxes. This count is for Residential and Business combined.	498,463
Single Family Delivery Units: Total count of single family mail delivery receptacles; generally analogous to homes.	343,648
Multi Family Delivery Units: Total count of multifamily mail delivery receptacles; generally analogous to apartments.	63,345

# of Businesses: The total number of Business Establishments. Data taken from Business Census 2023.	31,956
1st Quarter Payroll: The total payroll for the first quarter. Data taken from Business Census 2023.	$11,191,454,000
Annual Payroll: The total annual payroll . Data taken from Business Census 2023.	$44,525,989,000
# of Employees: The total number of employees for all ZIP Codes in this City. Data taken from Business Census 2023.	627,294

Sum of all ZIP Codes assigned Saint Louis, MO as their primary County.

References

U.S. Postal Service [Last Updated: 4/1/2025], https://www.usps.com
ZIP-Codes.com Internal Data Creation [Last Updated: 4/1/2025], https://www.zip-codes.com
U.S. Geological Survey [Updated as needed], https://www.usgs.gov
U.S. Census [Updated Yearly], https://www.census.gov
U.S. Census 2020 [Decennial] [Last Updated: 5/25/2023], https://www.census.gov