US county map

How to use it

Pick what you want to see under “Data” and the map recolors right away. Hover over a county, or tap it on your phone, to see its value, its rank and the rest of its numbers. Below the map you’ll find the legend and the 10 counties with the highest and lowest values.

Choose a state under “State” to zoom in and rank only its counties: the colors are recalculated for that state, so differences inside it stand out. Alaska and Hawaii have their own buttons on the map. The page address keeps your view, so you can share it as is.

What the map shows

The United States had 341,784,857 people on July 1, 2025, according to the Census Bureau’s estimates, 3.1% more than in the 2020 Census. Counties range from Los Angeles County, CA, with 9,694,934 people, to Loving County, TX, with 52. Half of all counties have fewer than 26,231 people, and 737 have fewer than 10,000.

New York County, NY (Manhattan) is by far the densest county, with 73,342 people per square mile. Among counties with at least 10,000 people in 2020, Kaufman County, TX grew the fastest (+44.0%) and Reeves County, TX shrank the most (−17.7%). In all, 1,298 counties (41%) lost population.

Median household income goes from $181,765 in Loudoun County, VA to $22,188 in Owsley County, KY; the typical county sits at $65,681. The largest county by land area is Yukon-Koyukuk Census Area, AK (145,768 sq mi), and the smallest is Falls Church city, VA (2.0 sq mi).

How the colors work

Population, density, income and area use six shades of green split by rounded quantiles: each color holds about the same number of counties, and the breaks are rounded to easy numbers. The breaks are recalculated for what you’re looking at, so a state gets its own.

Population change uses fixed breaks: gray for counties that barely changed (between −1% and +1%), green for those that grew and brown for those that shrank, darker as the change gets bigger (over 5% and over 10%). Every scale goes from light to dark, so it still reads in grayscale or printed in black and white.

Where the data comes from

Everything comes from the U.S. Census Bureau and is in the public domain. Population is the Vintage 2025 estimate for July 1, 2025, and the change compares it with the April 1, 2020 estimates base. Median household income comes from the American Community Survey 2020–2024 5-year estimates, in 2024 dollars. Land area comes from the 2025 Gazetteer files and the county shapes from the 2025 cartographic boundary files. Connecticut shows its nine planning regions, which replaced its counties in Census data in 2022.