ZIP Codes in Missouri
Missouri's ZIP codes cover a state defined by two major metro areas at opposite ends - Kansas City in the west and St. Louis in the east - with the Ozark Mountains and a stretch of farmland filling much of the space in between. With around 6.2 million residents, Missouri's population splits fairly evenly between these two urban poles, giving the state a somewhat unusual dual-hub structure compared to neighbors with a single dominant city.
How ZIP Codes Are Organized Across the State
Missouri's ZIP codes fall within the 63000–65899 range under the USPS system. St. Louis and the surrounding eastern metro area occupy the lower end around 631xx–633xx, Kansas City sits near 641xx, and Springfield, in the southwestern Ozarks, carries codes closer to 658xx.
Missouri's Major Metro Areas by Population
The chart below shows how population splits between St. Louis and Kansas City, Missouri's two dominant metro areas, with Springfield trailing well behind as the state's third-largest.
St. Louis's ZIP codes cover a historic river city built at the confluence of the Mississippi and Missouri Rivers, home to the iconic Gateway Arch and a strong tradition in beer brewing, healthcare, and biotech industries. Kansas City, on the western edge of the state, straddles the Missouri-Kansas border and has built a reputation around barbecue, jazz history, and a growing tech sector. For a broader comparison, our full US ZIP code directory shows how Missouri's ranges fit alongside every other state.
Jefferson City and Mid-Missouri
Missouri's state capital, Jefferson City, sits along the Missouri River roughly halfway between St. Louis and Kansas City, a deliberately central location chosen to balance the state's two larger population centers. Nearby Columbia, home to the flagship University of Missouri campus, brings a distinct college-town character to the region's ZIP codes, with a younger, more transient population than the surrounding rural counties.
The Ozarks and Southern Missouri
Southern Missouri is dominated by the Ozark Mountains, a region of forested hills, lakes, and small tourist towns that draws significant visitor traffic, particularly around the Lake of the Ozarks and Branson's entertainment scene. This area shares a similar rural mountain character with neighboring Arkansas just across the state line, and ZIP codes here tend to cover larger areas with lower year-round population than the state's two big metro regions.
Why ZIP Codes Matter Beyond Mail
In Missouri, ZIP codes carry particular significance given the state's dual-hub structure - businesses expanding into Missouri often need to evaluate both the St. Louis and Kansas City markets separately, using ZIP-level data to compare demographics and cost of doing business between the two. Tourism operators around the Ozarks and Branson use ZIP codes to define service areas for the region's large entertainment and outdoor recreation industry. And logistics companies rely on Missouri's central location, with both major metro areas serving as significant transportation hubs.
Border Regions and Neighboring States
Missouri shares borders with eight states, tied for the most of any US state. To the west, Kansas City straddles the line with Kansas directly. To the north, Iowa's farmland continues into northern Missouri. And to the south, the Ozarks blend into Arkansas, while the Mississippi River marks Missouri's eastern border with Illinois for much of its length.
Finding the Right ZIP Code
Use the list below to browse Missouri's ZIP codes by city, county, or population - sorted so the most populous areas surface first. Each entry links through to a detailed page with additional demographic data. If you're trying to identify the ZIP code for a specific address rather than browsing by city, the search tool at the top of this page will get you there faster than scrolling through the full list.
Frequently Asked Questions
How many ZIP codes does Missouri have?
Missouri has several hundred ZIP codes, split fairly evenly between the St. Louis and Kansas City metro areas, with fewer covering the Ozarks and rural mid-Missouri.
What ZIP code range does Missouri use?
Missouri ZIP codes generally fall between 63000 and 65899, with St. Louis toward the lower end and the southwestern Ozarks further along the range.
Which Missouri city has the most ZIP codes?
St. Louis and Kansas City each account for a substantial share of the state's ZIP codes, reflecting Missouri's unusual dual-metro population structure.
Can I look up a Missouri ZIP code by city name?
Yes, use the search tool on this page or browse the full list below, which is organized by city and sorted by population.
Whether you're relocating to St. Louis or Kansas City, researching property in the Ozarks, or simply trying to pin down the right ZIP code for a specific Missouri address, the data below covers every corner of the state.