Data / Rankings / Population density / US counties
US counties by population density
New York County had the highest population density of 3144 counties in 2024, at 28,381 inhabitants per km². Yukon-Koyukuk Census Area had the lowest, at 0 inhabitants per km². The median was 17.3 inhabitants per km² and the figure for the United States was 37.2 inhabitants per km². Source: the U.S. Census Bureau.
New York County New York County: 28,381 inhabitants per km² 28,381 Kings County Kings County: 14,796.3 inhabitants per km² 14,796.3 Bronx County Bronx County: 12,863.9 inhabitants per km² 12,863.9 Queens County Queens County: 8,405.8 inhabitants per km² 8,405.8 San Francisco County San Francisco County: 6,789.5 inhabitants per km² 6,789.5 Hudson County Hudson County: 6,110.3 inhabitants per km² 6,110.3 Suffolk County Suffolk County: 5,259.1 inhabitants per km² 5,259.1 Philadelphia County Philadelphia County: 4,520.6 inhabitants per km² 4,520.6 District of Columbia District of Columbia: 4,366.6 inhabitants per km² 4,366.6 Alexandria city Alexandria city: 4,119.9 inhabitants per km² 4,119.9 Arlington County Arlington County: 3,559.7 inhabitants per km² 3,559.7 Richmond County Richmond County: 3,353.2 inhabitants per km² 3,353.2 Falls Church city Falls Church city: 2,838.7 inhabitants per km² 2,838.7 Essex County Essex County: 2,729.2 inhabitants per km² 2,729.2 Baltimore city Baltimore city: 2,719.1 inhabitants per km² 2,719.1 Union County Union County: 2,249.5 inhabitants per km² 2,249.5 Cook County Cook County: 2,120.2 inhabitants per km² 2,120.2 Manassas Park city Manassas Park city: 2,096.7 inhabitants per km² 2,096.7 Nassau County Nassau County: 1,896.7 inhabitants per km² 1,896.7 Denver County Denver County: 1,870.5 inhabitants per km² 1,870.5 St. Louis city St. Louis city: 1,754.5 inhabitants per km² 1,754.5 Manassas city Manassas city: 1,727.4 inhabitants per km² 1,727.4 Charlottesville city Charlottesville city: 1,681.1 inhabitants per km² 1,681.1 Norfolk city Norfolk city: 1,674.9 inhabitants per km² 1,674.9 Bergen County Bergen County: 1,614.5 inhabitants per km² 1,614.5 Fairfax city Fairfax city: 1,610.9 inhabitants per km² 1,610.9 Orange County Orange County: 1,537.1 inhabitants per km² 1,537.1 Richmond city Richmond city: 1,512.9 inhabitants per km² 1,512.9 Milwaukee County Milwaukee County: 1,478 inhabitants per km² 1,478 Ramsey County Ramsey County: 1,371.2 inhabitants per km² 1,371.2 Pinellas County Pinellas County: 1,354.1 inhabitants per km² 1,354.1 Delaware County Delaware County: 1,221.3 inhabitants per km² 1,221.3 Lexington city Lexington city: 1,189.7 inhabitants per km² 1,189.7 Winchester city Winchester city: 1,179.4 inhabitants per km² 1,179.4 Dallas County Dallas County: 1,178 inhabitants per km² 1,178 Fairfax County Fairfax County: 1,145.2 inhabitants per km² 1,145.2 Harrisonburg city Harrisonburg city: 1,131.3 inhabitants per km² 1,131.3 Harris County Harris County: 1,129.9 inhabitants per km² 1,129.9 Portsmouth city Portsmouth city: 1,122.8 inhabitants per km² 1,122.8 DeKalb County DeKalb County: 1,114.5 inhabitants per km² 1,114.5 inhabitants per km². Source: Invokely calculation with data from U.S. Census Bureau . Retrieved 2026-10-09. Full ranking Rank Counties 2024inhabitants per km² Change on 2023 1 New York County 28,381 +2.1% 2 Kings County 14,796.3 +1.8% 3 Bronx County 12,863.9 +1.9% 4 Queens County 8,405.8 +2.3% 5 San Francisco County 6,789.5 +0.5% 6 Hudson County 6,110.3 +1.6% 7 Suffolk County 5,259.1 +1.1% 8 Philadelphia County 4,520.6 +0.4% 9 District of Columbia 4,366.6 +1.3% 10 Alexandria city 4,119.9 +2.3% 11 Arlington County 3,559.7 +2.3% 12 Richmond County 3,353.2 +0.9% 13 Falls Church city 2,838.7 +1.6% 14 Essex County 2,729.2 +2.3% 15 Baltimore city 2,719.1 +0.4% 16 Union County 2,249.5 +2.2% 17 Cook County 2,120.2 +0.9% 18 Manassas Park city 2,096.7 +0.7% 19 Nassau County 1,896.7 +0.6% 20 Denver County 1,870.5 +2% 21 St. Louis city 1,754.5 -1% 22 Manassas city 1,727.4 +2% 23 Charlottesville city 1,681.1 -0.5% 24 Norfolk city 1,674.9 -0.8% 25 Bergen County 1,614.5 +1% 26 Fairfax city 1,610.9 +3.9% 27 Orange County 1,537.1 +0.3% 28 Richmond city 1,512.9 +1.7% 29 Milwaukee County 1,478 +0.3% 30 Ramsey County 1,371.2 +0.6% 31 Pinellas County 1,354.1 -0.6% 32 Delaware County 1,221.3 +0.4% 33 Lexington city 1,189.7 +2.3% 34 Winchester city 1,179.4 +0.8% 35 Dallas County 1,178 +1% 36 Fairfax County 1,145.2 +1.4% 37 Harrisonburg city 1,131.3 -0.4% 38 Harris County 1,129.9 +2% 39 Portsmouth city 1,122.8 -0.2% 40 DeKalb County 1,114.5 +0.5% 41 Wayne County 1,114.1 +0.4% 42 Fredericksburg city 1,107.8 +2.8% 43 Passaic County 1,101.7 +1.4% 44 Middlesex County 1,100.5 +1% 45 DuPage County 1,098.2 +0.6% 46 Cuyahoga County 1,041.7 -0.1% 47 Hampton city 1,030.8 +0.3% 48 Newport News city 1,026.3 0% 49 Tarrant County 994.9 +1.6% 50 Franklin County 980.9 +1.2% 51 Marion County 965.5 +1% 52 Colonial Heights city 956.1 +1.1% 53 Camden County 930.7 +0.7% 54 Los Angeles County 927 +0.2% 55 Greater Bridgeport Planning Region 926.5 +1.3% 56 Broomfield County 918.2 +1.9% 57 Westchester County 904.4 +1.1% 58 Gwinnett County 904.3 +1.8% 59 Cobb County 896.6 +1% 60 Roanoke city 896.1 +1% 61 Hennepin County 890 +1.1% 62 Mecklenburg County 889.9 +2.8% 63 Hopewell city 860 +0.7% 64 Alameda County 856.9 +0.2% 65 Montgomery County 840.2 +0.8% 66 Orleans Parish 827.6 -0.6% 67 Clayton County 809.9 -0.4% 68 Jefferson County 805.1 +1.2% 69 Bristol County 802.4 -0.4% 70 Fulton County 799.1 +0.7% 71 Hamilton County 797.9 +0.7% 72 Rockland County 788.8 +2.4% 73 Middlesex County 785.5 +1.2% 74 Prince George's County 771.7 +1% 75 St. Louis County 752.9 +0.2% 76 Norfolk County 719 +1% 77 Virginia Beach city 715.9 +0.1% 78 Multnomah County 711.7 +0.1% 79 Macomb County 710.8 +0.6% 80 Douglas County 710.5 +1.2% 81 Montgomery County 699.7 +0.6% 82 Williamsburg city 688.7 -0.6% 83 Radford city 687.9 +1.6% 84 Salem city 684.5 +0.6% 85 Mercer County 683.4 +1.5% 86 Bexar County 665.8 +1.7% 87 Suffolk County 654.2 +0.7% 88 Orange County 650.3 +1.3% 89 Allegheny County 649.1 -0.1% 90 Essex County 647.7 +1% 91 Broward County 646.3 +0.7% 92 Sacramento County 643.9 +0.8% 93 San Mateo County 637.4 +0.9% 94 Honolulu County 636.3 0% 95 Providence County 636.2 +1.4% 96 Lynchburg city 633.9 +0.7% 97 Contra Costa County 629.9 +0.7% 98 Lake County 625.3 +0.7% 99 Salt Lake County 624.5 +1% 100 Seminole County 611.1 +0.4% 101 Waynesboro city 608 +1.9% 102 South Central Connecticut Planning Region 607.2 +0.9% 103 Hillsborough County 593.5 +0.9% 104 Petersburg city 578.3 +2.1% 105 Collin County 575.4 +3.9% 106 Prince William County 573.9 +1.4% 107 Miami-Dade County 571.5 +0.7% 108 Oakland County 570.9 +0.6% 109 Santa Clara County 570.6 +0.9% 110 Wake County 568.6 +2.4% 111 Davidson County 564.9 +2.2% 112 Henrico County 561.8 +1.2% 113 Anne Arundel County 559.5 +0.3% 114 Jefferson Parish 554.9 +0.7% 115 Baltimore County 547.5 +0.2% 116 Monmouth County 534.9 +0.4% 117 Duval County 533.9 +1.2% 118 Travis County 533.9 +1.6% 119 New Castle County 530.7 +0.9% 120 Howard County 519.7 +0.4% 121 Johnson County 514.3 +0.9% 122 Staunton city 509 +1.6% 123 Summit County 502.4 +0.2% 124 Bristol city 493.5 -1.5% 125 New Hanover County 488.5 +1.4% 126 Martinsville city 486 +0.5% 127 Lucas County 482.3 -0.2% 128 Forsyth County 479.2 +1.9% 129 Tulsa County 470.4 +1.2% 130 Shelby County 469.5 -0% 131 Jackson County 465.5 +1.1% 132 Western Connecticut Planning Region 462.7 +1.2% 133 Denton County 460 +3.2% 134 Durham County 459.6 +1.9% 135 Somerset County 454.2 +1.2% 136 Davis County 449.8 +1% 137 Montgomery County 449.4 +0.4% 138 Oklahoma County 445.6 +0.9% 139 Fayette County 444.9 +1.1% 140 Monroe County 441 +0.2% 141 Morris County 436.6 +0.9% 142 Wyandotte County 432.5 +1.5% 143 Naugatuck Valley Planning Region 431.7 +0.9% 144 Lehigh County 428.1 +0.8% 145 Fort Bend County 425.9 +2.9% 146 Lee County 425.9 +1.8% 147 Clarke County 423.2 +0.2% 148 King County 423 +1.5% 149 Kenton County 420 +1.3% 150 Rockwall County 415.4 +4.2% 151 Bucks County 414.2 +0.1% 152 Bristol County 412.5 +0.8% 153 Ocean County 410.7 +1.1% 154 Covington city 401.6 +1.6% 155 Buena Vista city 396.5 +0.5% 156 Kent County 394.6 +0.4% 157 Franklin city 392 +1% 158 Lake County 390.7 +0.2% 159 Kane County 389.1 +1% 160 Lake County 388.9 +0.5% 161 Knox County 385.5 +1.2% 162 East Baton Rouge Parish 385 +0.5% 163 Danville city 378.5 -0.2% 164 Forsyth County 376.4 +1.1% 165 Galveston County 373.8 +1.4% 166 Gloucester County 373.2 +0.8% 167 Capitol Planning Region 371.8 +0.8% 168 Hamilton County 371.7 +1.9% 169 Lafayette Parish 365.8 +1.6% 170 Muscogee County 360.4 -0% 171 Chesterfield County 356.7 +1.6% 172 Erie County 350.9 0% 173 Polk County 346.2 +1.3% 174 Anoka County 345.7 +1.3% 175 Pasco County 339.3 +3.3% 176 Northampton County 337.3 +0.7% 177 El Paso County 335.2 +0.8% 178 Guilford County 332.9 +1% 179 Loudoun County 332.2 +1.6% 180 Sarpy County 331.8 +2.1% 181 Sarasota County 330.5 +0.8% 182 Butler County 329.2 +0.8% 183 Will County 327.5 +0.7% 184 Arapahoe County 327 +1.5% 185 Washington County 324.4 +0.8% 186 Poquoson city 323.4 +2.1% 187 Clark County 323.3 +0.8% 188 Plymouth County 319.3 +0.9% 189 Emporia city 315.1 -1.3% 190 Henry County 314.9 +1.8% 191 Newport County 314.2 -0.5% 192 Galax city 314.1 -1.1% 193 Dakota County 311.4 +1.1% 194 Palm Beach County 309.4 +0.9% 195 Schenectady County 305.1 +1% 196 Kent County 304.7 +1% 197 San Diego County 301.4 +0.2% 198 Vanderburgh County 299.6 +0.5% 199 Douglas County 293.4 +1.8% 200 Jefferson County 293.1 +0.4% 201 Waukesha County 292 +0.5% 202 St. Charles County 291.2 +1.2% 203 Chesapeake city 290.6 +0.4% 204 Hampden County 290 +0.3% 205 Rockdale County 289.7 +1.3% 206 Chester County 285.3 +0.6% 207 Washington County 284 +1.5% 208 Greenville County 281.9 +2.3% 209 Montgomery County 278.3 +4.9% 210 Chatham County 276.2 +1.4% 211 Hamilton County 275.8 +1.6% 212 Kitsap County 274.3 +1.2% 213 Cherokee County 269.7 +2.4% 214 St. Lucie County 264.4 +3.6% 215 Gaston County 263.8 +1.9% 216 York County 263.1 +0.4% 217 Cabarrus County 262.6 +2.1% 218 Clay County 255 +1.1% 219 Lorain County 252.8 +0.7% 220 Williamson County 252.2 +3.9% 221 Stark County 250.7 +0.2% 222 Brevard County 249.6 +1.6% 223 Fayette County 247.4 +1% 224 Richmond County 245.9 +0.3% 225 Warren County 245.3 +0.8% 226 Bibb County 243.6 +0.3% 227 Genesee County 243.3 -0% 228 Stafford County 242.7 +1.8% 229 Campbell County 240 +0.2% 230 Kenosha County 239.3 +0.4% 231 Manatee County 238.6 +3.1% 232 Rutherford County 236.9 +2.6% 233 Albany County 236.1 +0.7% 234 Harford County 234.6 +0.3% 235 Allen County 234.5 +1.1% 236 Barrow County 232.4 +3.8% 237 Paulding County 232.3 +2.8% 238 Onondaga County 232.2 -0.1% 239 Jefferson County 231.5 +0.3% 240 Burlington County 230.7 +1.1% 241 Racine County 230.4 +0.5% 242 St. Joseph County 230.2 -0.1% 243 Lancaster County 229.9 +0.3% 244 Barnstable County 229.2 +0.2% 245 Santa Cruz County 226.8 -0.7% 246 San Joaquin County 226.6 +1.4% 247 Worcester County 225.9 +1.1% 248 Boone County 225 +1.5% 249 James City County 224.9 +0.6% 250 Hidalgo County 224.5 +1.4%
Showing the top 250 of 3144. The CSV download has every row.
Other periods
About this ranking Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.
United States: Census Bureau population estimates for 1 July divided by land area (water excluded) from the latest Census Gazetteer files. US tables often give people per square mile; multiply persons per km² by 2.59 to compare.
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. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.Use this data in your AI agent Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:
Rank US counties by population density using official data, and cite the source. rank_places {"indicator":"population_density","level":"province","within":"United States","limit":10}
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Questions Which county has the highest population density? New York County, with 28,381 inhabitants per km² in 2024, according to the U.S. Census Bureau.
Which county has the lowest population density? Yukon-Koyukuk Census Area, with 0 inhabitants per km² in 2024.
Where does this ranking come from? Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². Retrieved 2026-10-09.
Population density: other rankings
US counties: more rankings 