ZIP Codes in Wyoming
Wyoming's ZIP codes cover the least populous state in the entire country, with just around 585,000 residents spread across a landscape of high plains, dramatic mountain ranges, and the geothermal wonders of Yellowstone National Park. Wyoming's population density is so low that some ZIP codes here cover thousands of square miles for just a few hundred residents.
How ZIP Codes Are Organized Across the State
Wyoming's ZIP codes fall within the 82000–83199 range under the USPS system, one of the most compact ranges of any state given how sparsely populated Wyoming actually is. Cheyenne, the state capital, sits near 820xx, Casper, in the central part of the state, occupies 826xx, and Jackson, near Grand Teton and Yellowstone national parks, carries codes closer to 830xx.
Wyoming's Major Population Centers
The chart below shows how population spreads across Wyoming's largest towns - Cheyenne and Casper lead, but even the state's biggest city remains modest by national standards.
Cheyenne's ZIP codes cover Wyoming's capital and largest city, close to the Colorado border, with an economy built around state government, a major railroad presence, and Warren Air Force Base. Casper, in the central part of the state, has long been tied to the energy industry, historically oil and now increasingly wind power, given Wyoming's status as one of the windiest states in the country. For a broader comparison, our full US ZIP code directory shows how Wyoming's compact range fits alongside every other state.
Jackson Hole and the National Parks
Jackson, in the northwest corner of the state, sits at the gateway to both Grand Teton and Yellowstone national parks, and despite its small year-round population, carries some of the highest property values in the entire country, driven by wealthy second-home buyers and a booming luxury tourism economy. ZIP codes here see dramatic seasonal swings, with summer and winter tourist traffic far exceeding the modest resident population.
Wyoming's Energy Economy
Wyoming has long depended heavily on energy extraction, historically coal, oil, and natural gas, with the Powder River Basin near Gillette ranking among the largest coal-producing regions in the entire country. ZIP codes in this part of the state reflect an economy closely tied to commodity price cycles, with population and local business activity often rising and falling alongside energy markets.
Why ZIP Codes Matter Beyond Mail
In Wyoming, ZIP codes carry particular significance for the energy sector, given the state's heavy reliance on coal, oil, and gas extraction - companies use ZIP-level data extensively for workforce and logistics planning around the Powder River Basin. Jackson's luxury real estate market, among the priciest in the country relative to its small population, relies on ZIP-level data for high-end property analysis. And Wyoming's lack of a state income tax continues to draw wealthy residents seeking a favorable tax environment.
Border Regions and Neighboring States
Wyoming shares borders with six states, an unusually high number for such a sparsely populated state. To the south, Colorado's Front Range connects into Wyoming's own high plains near Cheyenne. To the west, Idaho and Utah share similar mountain terrain near Jackson. And to the north, Montana continues Wyoming's own wide-open prairie and mountain landscape.
Finding the Right ZIP Code
Use the list below to browse Wyoming'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 Wyoming have?
Wyoming has around 160 ZIP codes, the fewest of any state, reflecting its status as the least populous state in the country.
What ZIP code range does Wyoming use?
Wyoming ZIP codes fall between 82000 and 83199, one of the most compact ranges of any state given its small population.
Why are Jackson property values so high despite the small population?
Jackson's proximity to Grand Teton and Yellowstone national parks, combined with Wyoming's lack of state income tax, has drawn wealthy second-home buyers, pushing property values to some of the highest in the country.
Can I look up a Wyoming 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 Cheyenne or Casper, researching a luxury property near Jackson Hole, or simply trying to pin down the right ZIP code for a specific Wyoming address, the data below covers every corner of the state.