ZIP Codes in Michigan
Michigan's ZIP codes cover a state split into two distinct peninsulas, connected by the Mackinac Bridge, with the vast majority of its roughly 10 million residents living in the Lower Peninsula around Detroit, Grand Rapids, and Lansing. The much smaller, heavily forested Upper Peninsula feels like a different state entirely, closer in character to northern Wisconsin than to the industrial cities further south.
How ZIP Codes Are Organized Across the State
Michigan's ZIP codes fall within the 48000–49999 range under the USPS system. Detroit and the surrounding metro area occupy the lower end around 482xx, Grand Rapids sits near 495xx, and Ann Arbor, home to the University of Michigan, carries codes closer to 481xx. The Upper Peninsula, separated from the rest of the state by Lake Michigan, pushes toward the upper end of the range around 498xx–499xx.
Michigan's Major Metro Areas by Population
The chart below shows how population concentrates around Detroit, Michigan's largest metro area, with Grand Rapids as a clear secondary hub in the western part of the state.
Detroit's ZIP codes cover a city long synonymous with the American auto industry, and while the region has faced real economic challenges over the decades, downtown Detroit and Midtown have seen significant reinvestment in recent years. Grand Rapids, on the western side of the state, has built a more diversified economy around furniture manufacturing, healthcare, and a rapidly growing craft beer scene. For a broader comparison, our full US ZIP code directory shows how Michigan's ranges fit alongside every other state.
Ann Arbor and Southeast Michigan
Ann Arbor, just west of Detroit, carries a distinctly different character shaped by the University of Michigan, one of the country's top public research institutions. This part of southeast Michigan blends college-town energy with continued ties to the auto industry's engineering and design centers, many of which remain headquartered in the surrounding suburbs.
The Upper Peninsula
Michigan's Upper Peninsula, connected to the Lower Peninsula only by the Mackinac Bridge, is sparsely populated, heavily forested, and known for brutal winters with some of the highest snowfall totals in the eastern United States. ZIP codes here cover a landscape closer in spirit to Wisconsin and Minnesota than to Detroit, and many residents identify more strongly with the UP's own distinct regional culture, sometimes called "Yooper" identity, than with the rest of the state.
Why ZIP Codes Matter Beyond Mail
In Michigan, ZIP codes carry particular weight in the auto industry, given the concentration of manufacturing, engineering, and corporate headquarters around metro Detroit - suppliers and logistics companies rely heavily on ZIP-level data to coordinate the industry's complex supply chains. Real estate listings around Grand Rapids and Ann Arbor use ZIP codes to signal proximity to employers and universities. And Great Lakes shipping and tourism operators use ZIP-level data across the state's extensive coastline, the longest freshwater shoreline of any US state.
Border Regions and Neighboring States
Michigan's Lower Peninsula shares a land border only with Ohio and Indiana to the south, while the Upper Peninsula borders Wisconsin. Much of the rest of the state's border is defined by the Great Lakes themselves, including a long international border with Canada across Lake Huron, the Detroit River, and Lake St. Clair.
Finding the Right ZIP Code
Use the list below to browse Michigan'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 Michigan have?
Michigan has several hundred ZIP codes, concentrated most heavily in the Lower Peninsula around Detroit and Grand Rapids, with far fewer covering the sparsely populated Upper Peninsula.
What ZIP code range does Michigan use?
Michigan ZIP codes generally fall between 48000 and 49999, with Detroit toward the lower end and the Upper Peninsula further along the range.
Which Michigan city has the most ZIP codes?
Detroit and its surrounding metro area account for the largest number of individual ZIP codes, given the region's size and population.
Can I look up a Michigan 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 the Detroit metro area, researching property near Grand Rapids or Ann Arbor, or simply trying to pin down the right ZIP code for a specific Michigan address, the data below covers both peninsulas of the state.