US county maps, and the data behind them

About this US county map

The interactive US county map on this site draws all 3,144 counties and county-equivalents from the Census Bureau's 2025 cartographic boundary files. Every shape on it is a link, every name is printed on the map rather than hidden behind a hover, and every number attached to it carries the Census product it came from and the year that product was published. This page is the entry point; the state pages are where the detail lives.

An interactive map with every county named

Names are printed directly on the map. That sounds obvious and is not how most county maps work: the common approach is an unlabelled shape that gives up a name only when a pointer touches it, which fails on a phone, fails for anyone using a keyboard, and fails when the page is printed. Here the label layout is computed when the site is built and sized against how many counties a state holds, so Texas at 254 does not print at the size Delaware at 3 does. Where two labels would collide, the one with less room shrinks or steps aside instead of overlapping. A name that still does not fit is dropped from the map and kept in the sortable table below it, so nothing is available only to a mouse.

The map is server-rendered SVG. It is complete before any script runs, which means it works with JavaScript blocked, it shifts nothing as the page loads, and it costs no extra request. Script adds two things and only two: a tooltip carrying the county's figures, and the switch that repaints the map by population, density or median household income.

Blank, fillable and colourable versions

Every map here is downloadable, and each comes in a labelled cut and a blank one. The blank US county map is the same geometry with the names taken off: outlines only, nothing else on the sheet.

The SVG is the file to take if you intend to edit it. It opens in Illustrator, Inkscape, Figma and Affinity, every county is a separate path carrying its FIPS code as its id, and the fills are plain attributes. That is what makes it a fillable US county map in the practical sense: you can select one county, change its colour, and affect nothing else on the page. Colouring counties by hand is how most thematic maps actually get made, and starting from a correct boundary file removes the part of that job that is genuinely hard.

The blank PNG is the one to print and colour in. It is 2000 pixels wide, which is enough to fill a US Letter or A4 sheet edge to edge without the lines going soft.

High resolution and print

Three formats ship for every map. The SVG is vector and has no resolution at all, so it scales to a wall poster without degrading. The PNG is a 2000 pixel raster for the cases where a vector will not do. The PDF is laid out for US Letter and is ready to send to a printer as it is.

All of it is free to use and redistribute. The boundaries are public-domain works of the United States federal government, so there is no licence to accept and no attribution required, though a credit is appreciated.

The data behind 3,144 counties

A map carrying no data is a picture. Every county on this one opens to a page with its population and the change since 2020 broken into births, deaths and net migration; its land area, water area and total area; its population density, computed here from two different Census products and labelled as computed; its median household income, home value and age; its county seat and founding year; and every county it borders, ordered by the length of the border they actually share.

That last one is worth naming, because the Census Bureau publishes county adjacency and almost nobody surfaces it. Knowing two counties touch is one fact. Knowing they touch along 47 miles rather than at a single point is a different one, and it is sitting in the file.

Cities and county seats

Each county page marks its county seat with a dot placed from the 2025 Census Gazetteer, and names the largest incorporated place inside the county with its population. Where that place spills across the county line, the page says so rather than implying the whole population sits inside.

This is not a road map. It shows administrative boundaries and the settlements that govern them, which is a different thing from a map of where people drive.

What these maps do not show

Being straight about the gaps costs less than disappointing someone after a download. These maps carry no highways, no roads and no terrain. They carry no election results, so they will not tell you how a county voted. There is no quiz mode and no map maker: this site publishes finished maps and the data behind them, it does not host a tool for assembling one from scratch. If what you want is a base layer to build something on, the blank SVG is the file to take.

Where to start

If you know the state, start there: every state page carries its own interactive map, a sortable table of all its counties, and its five downloads. If you want the whole country at once, the US county map page has the national frame and its printable files. If you are weighing two places against each other, the comparison tool draws both at true relative size on the same measures.