US Census Bureau · ACS 2023

    US Counties by Population— Page 9

    Every US county ranked by total population, from largest to smallest, based on the Census Bureau ACS 5-Year Estimates.

    3,222 counties rankedSource: US Census Bureau ACS 2023Highest firstShowing #201–225
    #CountyStatePopulation
    201Washtenaw CountyMichigan368,394
    202Douglas CountyColorado368,283
    203Anoka CountyMinnesota367,095
    204Davis CountyUtah366,742
    205Larimer CountyColorado363,561
    206Hamilton CountyIndiana357,176
    207Galveston CountyTexas354,721
    208Westmoreland CountyPennsylvania353,345
    209Nueces CountyTexas352,829
    210Rutherford CountyTennessee351,591
    211Marion CountyOregon346,532
    212St. Lucie CountyFlorida346,237
    213Somerset CountyNew Jersey346,203
    214Weld CountyColorado340,711
    215Rockland CountyNew York338,936
    216San Juan MunicipioPuerto Rico338,661
    217Spartanburg CountySouth Carolina338,096
    218Cumberland CountyNorth Carolina336,749
    219Henrico CountyVirginia334,434
    220Howard CountyMaryland333,916
    221Durham CountyNorth Carolina329,405
    222Boulder CountyColorado328,317
    223Greater Bridgeport Planning RegionConnecticut326,296
    224Luzerne CountyPennsylvania325,978
    225Lancaster CountyNebraska323,673
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    Data from the US Census Bureau American Community Survey (ACS) 5-Year Estimates, 2019–2023. Rankings include all counties, county equivalents, and independent cities in the United States. Click any county to see its full profile.

    Other Rankings

    US Counties by Median Home ValueMost Affordable Counties in the US by Home ValueUS Counties by Median Household IncomeUS Counties with the Lowest Poverty RatesUS Counties with the Highest Poverty RatesLeast Rent-Burdened Counties in the US