US Census Bureau · ACS 2023

    US Counties by Population— Page 6

    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 #126–150
    #CountyStatePopulation
    126Lancaster CountyPennsylvania555,151
    127Stanislaus CountyCalifornia552,250
    128Ramsey CountyMinnesota544,438
    129Spokane CountyWashington544,323
    130Guilford CountyNorth Carolina542,987
    131Chester CountyPennsylvania540,896
    132Summit CountyOhio538,087
    133Greenville CountySouth Carolina537,575
    134Montgomery CountyOhio535,528
    135Plymouth CountyMassachusetts531,889
    136Sedgwick CountyKansas524,810
    137Adams CountyColorado524,408
    138Camden CountyNew Jersey524,042
    139Passaic CountyNew Jersey518,289
    140Kane CountyIllinois516,097
    141Clark CountyWashington510,516
    142Morris CountyNew Jersey510,375
    143Ada CountyIdaho508,052
    144Lake CountyIndiana498,990
    145Polk CountyIowa497,441
    146Richmond CountyNew York492,734
    147Washoe CountyNevada491,770
    148Knox CountyTennessee487,401
    149Sonoma CountyCalifornia485,642
    150Prince William CountyVirginia484,625
    ← Previous
    1…567…129
    Next →

    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