ZIP Codes in New Hampshire
New Hampshire's ZIP codes cover a small but economically significant New England state, home to around 1.4 million residents concentrated mainly in the southern tier near the Massachusetts border, with the White Mountains and a much more rural character taking over further north. New Hampshire's lack of a state income or sales tax has long shaped its population and business patterns, particularly in towns close to the Massachusetts line.
How ZIP Codes Are Organized Across the State
New Hampshire's ZIP codes fall within the 03000–03899 range under the USPS system. Manchester, the state's largest city, sits near 031xx, Nashua, close to the Massachusetts border, carries codes around 030xx, and Concord, the state capital, occupies 033xx. The North Country, including the White Mountains region, pushes toward the upper end around 038xx.
New Hampshire's Major Population Centers
The chart below shows how population concentrates in the state's southern tier, with Manchester and Nashua as the clear population leaders.
Manchester's ZIP codes cover New Hampshire's largest city, a former mill town along the Merrimack River that has diversified its economy well beyond its industrial textile roots. Nashua, close to the Massachusetts border, benefits significantly from cross-border commuting and shopping traffic, drawn in part by New Hampshire's lack of sales tax. For a broader comparison, our full US ZIP code directory shows how New Hampshire's compact range fits alongside every other state.
The White Mountains and North Country
Northern New Hampshire, dominated by the White Mountains, offers some of the most dramatic scenery in New England, including Mount Washington, famous for recording some of the highest wind speeds ever measured on Earth. ZIP codes here cover a much more rural, tourism-dependent economy than the southern tier, with ski resorts and hiking drawing significant seasonal visitor traffic.
The Massachusetts Border Effect
Southern New Hampshire towns near the border with Massachusetts have grown substantially as residents and businesses relocate to take advantage of New Hampshire's tax-friendly environment while remaining within commuting distance of the Boston metro area. This border effect shapes real estate demand and population growth in these ZIP codes far more than in the state's more remote northern regions.
Why ZIP Codes Matter Beyond Mail
In New Hampshire, ZIP codes near the Massachusetts border carry particular real estate significance, given the tax advantages that draw commuters and retailers alike. Ski resorts and tourism operators in the White Mountains use ZIP-level data to define service areas for the state's substantial winter sports economy. And New Hampshire's status as an early presidential primary state means its ZIP codes also see periodic spikes in political and media attention every four years.
Border Regions and Neighboring States
New Hampshire shares borders with three states and a short stretch of Canadian border to the north. To the south, the Massachusetts line drives much of the state's population and economic growth. To the west, the Connecticut River separates New Hampshire from Vermont. And to the east, Maine shares a similar rugged coastline, though New Hampshire's own ocean frontage is famously short, just about 18 miles.
Finding the Right ZIP Code
Use the list below to browse New Hampshire'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 New Hampshire have?
New Hampshire has around 235 ZIP codes, concentrated most heavily in the southern tier near Manchester and Nashua, with far fewer covering the rural North Country.
What ZIP code range does New Hampshire use?
New Hampshire ZIP codes generally fall between 03000 and 03899, with Nashua and the southern border towns toward the lower end and the White Mountains further along the range.
Why do so many people live near the Massachusetts border?
New Hampshire's lack of a state income or sales tax draws residents and businesses close to Massachusetts, allowing commuters to work in the Boston metro area while living in a lower-tax state.
Can I look up a New Hampshire 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 tax-friendly southern tier, researching a White Mountains vacation property, or simply trying to pin down the right ZIP code for a specific New Hampshire address, the data below covers every corner of the state.