Data / Rankings / Population / US counties

US counties by population

Los Angeles County had the highest population of 3144 counties in 2020, at 10 million. Loving County had the lowest, at 63. The median was 25,696 and the figure for the United States was 331.58 million. Source: the U.S. Census Bureau.

Full ranking

Showing the top 250 of 3144. The CSV download has every row.

Other periods

• 2025
• 2024
• 2023
• 2022
• 2021
• 2020

About this ranking

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

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Population: other rankings

• Countries
• EU countries
• US states
• EU regions (NUTS 2)
• Autonomous communities of Spain
• Provinces of Spain
• Municipalities of Spain
• Regions of Germany (NUTS 2)
• Regions of France (NUTS 2)
• Regions of Italy (NUTS 2)
• Regions of Poland (NUTS 2)
• Regions of Greece (NUTS 2)

US counties: more rankings

• Asian population share
• Bachelor's degree or higher, population 25 and over
• Live births, July to June
• Black or African American population share
• Crude birth rate, July to June
• Crude death rate, July to June
• Deaths, July to June
• Foreign-born population share
• Real GDP growth
• GDP per capita, US dollars
• Gross domestic product (GDP), US dollars
• Hispanic or Latino population share
• Homeownership rate (US, housing units)
• Median age
• Median gross rent (monthly)
• Median home value